@article {10562, title = {Alendronate treatment induces IL-1B expression and apoptosis in glioblastoma cell line.}, journal = {Inflammopharmacology}, volume = {26}, year = {2018}, month = {2018 Feb}, pages = {285-290}, abstract = {

Alendronate (ALD), one among the nitrogen-containing bisphosphonates (NBPs), is currently used for the treatment of many pathological conditions. Unfortunately, although generally tolerated, NBPs treatment has been associated with central nervous system (CNS) adverse outcomes, such as amnesia, hallucinations and visual disturbances. So, we analyzed the effect of ALD treatment in glial cells, the main sources of cholesterol for neurons and principal cells involved in the immunological defense of the brain. We treated a glial cell line (U87-MG) with increasing doses of ALD (0.1, 1, 10, 25, 50~μM) for 48~h, aimed at evaluating the influence of this drug treatment on IL-1B expression, NLRP3 and CASP1 expression, mitochondrial activity and apoptotic cell death. We observed that ALD treatment, at the higher concentrations, induced a significant increase of IL-1B, NLRP3, CASP1 expression, provoked apoptosis and also mitochondrial damage in U87-MG. Considering the reported CNS adverse outcomes of NBPs treatment, our results confirm ALD side-effects on glial cell model.

}, keywords = {Alendronate, Apoptosis, Brain, Cell Line, Tumor, Diphosphonates, Glioblastoma, Humans, Interleukin-1beta, Neuroglia}, issn = {1568-5608}, doi = {10.1007/s10787-017-0369-5}, author = {Tricarico, Paola Maura and Epate, Angeladine and Celsi, Fulvio and Crovella, Sergio} } @article {10445, title = {Cytokine profiles of women with vulvodynia: Identification of a panel of pro-inflammatory molecular targets.}, journal = {Eur J Obstet Gynecol Reprod Biol}, volume = {226}, year = {2018}, month = {2018 Jul}, pages = {66-70}, abstract = {

OBJECTIVE: The vulvar pain syndrome (VPS) is a multifactorial disease severely influencing the lifestyle of affected women. Among possible etiological factors, local injury, peripheral and/or central sensitization of the nervous system, and a chronic inflammatory status have been positively associated with the development of VPS. The identification of a constitutive altered local inflammatory profile in VPS women may represent an important point in the characterization of patients{\textquoteright} phenotype as a useful marker influencing the vulvar micro-environment. The aim of this study was to investigative the possible role of the local cytokines production in women with VPS in comparison to healthy women.

STUDY DESIGN: In this study were collected vaginal swabs from 57 healthy women (HC) who never suffered from VPS and from 30 patients diagnosed with vulvodynia (VPS) by at least 3 years and currently symptomatic. All patients included in this study showed the absence of Sexually Transmitted (STD) diseases and Reproductive Tract Infection. Real-time PCR was performed to assess the genomic sequences of ST pathogens. The Luminex Bio-Plex platform was used for the analysis of a panel of 48 immune factors.

RESULTS: Eleven molecules, specifically involved in the pro-inflammatory pathway were significantly modulated in VPS patients in comparison to healthy women, suggesting a persistent inflammatory process.

CONCLUSIONS: Therefore, these inflammatory factors could be possible biological markers involved in this disease. Nevertheless, other studies are needed to consider this specific immune profile as a valid marker of the vulvodynia.

}, keywords = {Adult, Aged, Cytokines, Female, Humans, Inflammation, Middle Aged, Vaginal Smears, Vulva, Vulvodynia, Women{\textquoteright}s Health}, issn = {1872-7654}, doi = {10.1016/j.ejogrb.2018.05.035}, author = {Zanotta, Nunzia and Campisciano, Giuseppina and Scrimin, Federica and Blendi, Ura and Marcuzzi, Annalisa and Vincenti, Ezio and Crovella, Sergio and Comar, Manola} } @article {10770, title = {DEFB1 polymorphisms and HIV-1 mother-to-child transmission in Zambian population.}, journal = {J Matern Fetal Neonatal Med}, year = {2018}, month = {2018 Mar 20}, pages = {1-7}, abstract = {

INTRODUCTION: Human Beta Defensin-1 (hBD-1) is a component of the innate immune system, the first line of defence against pathogens, already reported as involved in the susceptibility to HIV-1 infection and HIV-1 mother-to-child transmission (MTCT) in different populations. We investigated the role of DEFB1 gene (encoding for hBD-1) functional polymorphisms in the susceptibility to HIV-1 MTCT in a population from Zambia.

METHODS: Four selected polymorphisms within DEFB1 gene, three at the 5{\textquoteright} untranslated region (UTR), namely -52G > A (rs1799946), -44C > G (rs1800972) and -20G > A (rs11362) and one in the 3{\textquoteright}UTR, c.*87A > G (rs1800972), were genotyped in 101 HIV-1 positive mothers (26 transmitters -27\% and 75 not transmitters -73\%) and 331 infants born to HIV-1 infected mothers (85 HIV-1 positive -26\% and 246 exposed but not infected -74\%).

RESULTS: DEFB1 c.*87-A allele was more frequent among HIV- children with respect to HIV+ (with intrauterine MTCT). Concerning DEFB1 haplotypes, GCGA haplotype resulted more represented in HIV- than HIV+ infants and DEFB1 ACGG haplotype presented increased frequency in HIV- children respect to HIV+ (with intra-partum MTCT) (p = .02, p = .002 and p = .006, respectively).

CONCLUSIONS: DEFB1 polymorphisms were significantly associated with decreased risk of HIV-1 infection acquisition in the studied Zambian population suggesting that they may play a role in HIV-1 MTCT.

}, issn = {1476-4954}, doi = {10.1080/14767058.2018.1449206}, author = {Zupin, Luisa and Polesello, Vania and Segat, Ludovica and Kamada, Anselmo Jiro and Kuhn, Louise and Crovella, Sergio} } @article {10419, title = {Genetic profile of patients with early onset inflammatory bowel disease.}, journal = {Gene}, volume = {645}, year = {2018}, month = {2018 Mar 01}, pages = {18-29}, abstract = {

Inflammatory Bowel disease (IBD) is a widespread pathological condition with clinical heterogeneity and with different levels of severity. Although IBD usually occurs in young adults, onset in childhood and infancy are described in patients within the 10th and second year of age. By genome-wide association studies and meta-analysis, several genetic loci have been identified associated with an increased risk of developing IBD in Western populations with variants that may alter the normal mucosal immunity in the gastrointestinal tract. The clinical complexity and the heterogeneity of the IBD phenotype probably reflect the presence of genetic heterogeneity where different genes or combinations of them may be involved, together with environmental factors. We hypothesized that patients with early onset IBD could have either more severe genetic variants in genes associated with IBD or multiple variants in different genes. Under the multifactorial diseases is crucial to consider the small contribution of a single variant in all not only to other small variations in the same gene but also in different genes belonging to the same pathway. We performed direct gene sequencing looking for 94 variations in NOD2, ATG16L1, IL23R, IL10R, IL10 and XIAP genes previously shown as correlated with IBD both in multifactorial and in Mendelian models. All variants identified are known in literature as being associated with IBD except for three variants in the genes NOD2, IL10 and IL10RB that even though present in online databases have never been involved in association studies on IBD patients. Moreover, we coupled genetic variants identification with an accurate "in silico" analysis to verify their predictive impact on the protein structure and function. The in-silico prediction of these variants results as benign therefore even if they exhibit a very low frequency in control population being benign, they cannot be considered pathogenic as monogenic disease but fall within the multifactorial range. The variants identified in our study partially reflect the association data described in the literature but there are no significant differences with the onset of disease (VEO vs EO-IBD).

}, keywords = {Age of Onset, Autophagy-Related Proteins, Child, Child, Preschool, Computer Simulation, Female, Genetic Predisposition to Disease, Genome-Wide Association Study, Humans, Infant, Inflammatory Bowel Diseases, Interleukin-10, Male, Nod2 Signaling Adaptor Protein, Polymorphism, Single Nucleotide, Receptors, Interleukin, Receptors, Interleukin-10, Sequence Analysis, DNA, X-Linked Inhibitor of Apoptosis Protein}, issn = {1879-0038}, doi = {10.1016/j.gene.2017.12.029}, author = {Girardelli, Martina and Basaldella, Federica and Paolera, Sara Della and Vuch, Josef and Tommasini, Alberto and Martelossi, Stefano and Crovella, Sergio and Bianco, Anna Monica} } @article {10796, title = {Human beta defensin-1 is involved in the susceptibility to adeno-tonsillar hypertrophy.}, journal = {Int J Pediatr Otorhinolaryngol}, volume = {107}, year = {2018}, month = {2018 Apr}, pages = {135-139}, abstract = {

INTRODUCTION: Innate immunity molecules are known to play a pivotal role in the homeostasis of the oral mucosa, permitting the presence of commensal microflora and, at the same time, providing a first line of defense against pathogens attempting to invade the oral cavity. Tonsils represent the local immune tissue in oral cavity, being able to provide a non-specific response to pathogens; however, in the presence of microbes or foreign materials present in the mouth tonsils could became infected and develop chronic inflammation, thus leading to hypertrophy. The etiology of the disease is multifactorial depending upon environmental and host factors, the latter including molecules of mucosal innate immunity.

METHODS: Ninety-five children with adeno-tonsillar hypertrophy subjected to adeno-tonsillectomy were recruited at the pediatric otorhinolaryngology service of the Institute for Maternal and Child Health IRCCS Burlo Garofolo, Trieste (Italy). The specimen discarded from the surgery were used for genomic DNA extraction and genotyping, for mRNA extraction and gene expression analysis, finally the samples were cut and used to prepare slides to perform immunohistochemistry.

RESULTS: Functional polymorphisms within DEFB1 gene, encoding the human beta defensin-1 (hBD-1), were analyzed finding association between DEFB1 rare haplotypes and susceptibility to adeno-tonsillar hypertrophy. DEFB1 mRNA expression was detected in the tonsils and the hBD-1 protein was localized at the epithelia of tonsils mainly in the proximity of the basal lamina.

CONCLUSION: Our findings lead us to hypothesize an involvement of hBD-1 mediated innate immunity in the modulation of the susceptibility towards adeno-tonsillar hypertrophy development.

}, keywords = {Adenoidectomy, Adenoids, Adolescent, beta-Defensins, Child, Child, Preschool, Female, Genetic Predisposition to Disease, Genotype, Haplotypes, Humans, Hypertrophy, Immunity, Innate, Immunohistochemistry, Italy, Male, Palatine Tonsil, Tonsillectomy}, issn = {1872-8464}, doi = {10.1016/j.ijporl.2018.01.041}, author = {Zupin, Luisa and Celsi, Fulvio and Bresciani, Martina and Orzan, Eva and Grasso, Domenico Leonardo and Crovella, Sergio} } @article {10810, title = {Lopinavir/Ritonavir Treatment Induces Oxidative Stress and Caspaseindependent Apoptosis in Human Glioblastoma U-87 MG Cell Line.}, journal = {Curr HIV Res}, volume = {16}, year = {2018}, month = {2018}, pages = {106-112}, abstract = {

BACKGROUND: Lopinavir and Ritonavir (LPV/r) treatment is widely used to prevent HIV mother-to-child transmission. Nevertheless, studies related to the impact of these compounds on patients, in particular in the foetus and newborns, are strictly required due to the controversial findings reported in the literature concerning possible neurologic side effects following the administration of these drugs.

OBJECTIVES: In our study, we evaluated the impact of LPV/r treatment on the human glioblastoma U- 87 MG cell line.

METHODS: In order to evaluate the influence of Lopinavir and Ritonavir in terms of oxidative stress (ROS production), mitochondrial morphology and apoptotic cell death, the latter either in the presence or in the absence of caspase-3 and -9 inhibitors, we treated U-87 MG with increasing doses (0.1-1-10-25-50 {\textmu}M) of Lopinavir and Ritonavir for 24h, either in single formulation or in combination. ROS production was measured by flow cytometry using H2DCFDA dye, mitochondrial morphology was evaluated using MitoRed dye and apoptotic cell death was monitored by flow cytometry using Annexin V-FITC and Propidium Iodide.

RESULTS: We observed that co-treatment with Lopinavir and Ritonavir (25 and 50 {\textmu}M) promoted a significant increase in ROS production, caused mitochondrial network damage and induced apoptosis in a caspase-independent manner.

CONCLUSION: Based on our findings, concordant with others reported in the literature, we hypothesize that LPV/r treatment could not be entirely free from side effects, being aware of the need of validation in in vivo models, necessary to confirm our results.

}, issn = {1873-4251}, doi = {10.2174/1570162X16666180528100922}, author = {Gratton, Rossella and Tricarico, Paola Maura and Guimar{\~a}es, Rafael Lima and Celsi, Fulvio and Crovella, Sergio} } @article {10495, title = {Antiretroviral Treatment in HIV-1-Positive Mothers: Neurological Implications in Virus-Free Children.}, journal = {Int J Mol Sci}, volume = {18}, year = {2017}, month = {2017 Feb 15}, abstract = {

Since the worldwide introduction of antiretroviral therapy (ART) in human immunodeficiency virus type 1, HIV-1-positive mothers, together with HIV-1 testing prior to pregnancy, caesarian birth and breastfeeding cessation with replacement feeding, a reduction of HIV-1 mother-to-child transmission (MTCT) has been observed in the last few years. As such, an increasing number of children are being exposed in utero to ART. Several questions have arisen concerning the neurological effects of ART exposure in utero, considering the potential effect of antiretroviral drugs on the central nervous system, a structure which is in continuous development in the fetus and characterized by great plasticity. This review aims at discussing the possible neurological impairment of children exposed to ART in utero, focusing attention on the drugs commonly used for HIV-1 MTCT prevention, clinical reports of ART neurotoxicity in children born to HIV-1-positive mothers, and neurologic effects of protease inhibitors (PIs), especially ritonavir-"boosted" lopinavir (LPV/r) in cell and animal central nervous system models evaluating the potential neurotoxic effect of ART. Finally, we present the findings of a meta-analysis to assess the effects on the neurodevelopment of children exposed to ART in utero.

}, keywords = {Animals, Anti-HIV Agents, Antiretroviral Therapy, Highly Active, Disease Management, Disease Models, Animal, Epigenesis, Genetic, Female, HIV Infections, HIV-1, Humans, Infectious Disease Transmission, Vertical, Maternal Exposure, Meta-Analysis as Topic, Mothers, Neurodevelopmental Disorders, Pregnancy, Prenatal Exposure Delayed Effects}, issn = {1422-0067}, doi = {10.3390/ijms18020423}, author = {Coelho, Ant{\^o}nio Victor Campos and Tricarico, Paola Maura and Celsi, Fulvio and Crovella, Sergio} } @article {10463, title = {CCR5Δ32 and the genetic susceptibility to rheumatoid arthritis in admixed populations: a multicentre study.}, journal = {Rheumatology (Oxford)}, volume = {56}, year = {2017}, month = {2017 03 01}, pages = {495-497}, keywords = {Arthritis, Rheumatoid, Brazil, Case-Control Studies, Consanguinity, Gene Frequency, Genetic Predisposition to Disease, Humans, Polymorphism, Single Nucleotide, Receptors, CCR5}, issn = {1462-0332}, doi = {10.1093/rheumatology/kew398}, author = {Toson, Bruno and Dos Santos, Eduardo Jos{\'e} and Adelino, Jos{\'e} Eduardo and Sandrin-Garcia, Paula and Crovella, Sergio and Louzada-J{\'u}nior, Paulo and Oliveira, Ren{\^e} Donizete Ribeiro and Pedroza, Larysse Santa Rosa Aquino and de F{\'a}tima Lobato Cunha Sauma, Maria and de Lima, Clayton Pereira Silva and Barbosa, Fabiola Brasil and Brenol, Claiton Viegas and Xavier, Ricardo Machado and Chies, Jos{\'e} Artur Bogo and Veit, Tiago Degani} } @article {10471, title = {DEFB1 polymorphisms and salivary hBD-1 concentration in Oral Lichen Planus patients and healthy subjects.}, journal = {Arch Oral Biol}, volume = {73}, year = {2017}, month = {2017 Jan}, pages = {161-165}, abstract = {

OBJECTIVES: The aetiology of Oral Lichen Planus (OLP), a chronic inflammatory disease of oral mucosa, is not yet well understood. Since innate immunity may be hypothesized as involved in the susceptibility to OLP, we studied human beta defensin 1 (hBD-1) an antimicrobial peptide constitutively expressed in the saliva, looking at functional genetic variants possibly able to diminish hBD-1 production an consequently conferring major susceptibility to OLP.

DESIGN: We analysed three DEFB1 polymorphisms at 5{\textquoteright} UTR, -52G>A (rs1799946), -44C>G (rs1800972), -20G>A (rs11362) and two DEFB1 polymorphisms at 3{\textquoteright}UTR, c*5G>A (rs1047031), c*87A>G (rs1800971), with the aim of correlating these genetic variants and hBD-1 salivary level in a group of OLP patients and in healthy subjects. We also evaluated hBD-1 salivary concentrations, using ELISA, in OLP and healthy controls.

RESULTS: We compared hBD-1 concentrations in OLP and healthy subjects: hBD-1 concentration was significantly higher in OLP patients respect to control. When considering the correlation between DEFB1 polymorphisms genotypes and hBD-1 expression levels, significant results were obtained for SNPs -52G>A (p=0.03 both in OLP patients and healthy individuals) and -44C>G (p=0.02 in OLP patients).

CONCLUSIONS: hBD-1 production was different between OLP and healthy subjects (not age-matched with OLP). DEFB1 gene polymorphisms, -52G>A and -44C>G, correlated with hBD-1 salivary concentrations.

}, keywords = {5{\textquoteright} Untranslated Regions, Adult, Aged, Aged, 80 and over, beta-Defensins, Female, Genetic Predisposition to Disease, Genotype, Humans, Lichen Planus, Oral, Male, Middle Aged, Polymorphism, Single Nucleotide, Saliva, Sequence Analysis, DNA}, issn = {1879-1506}, doi = {10.1016/j.archoralbio.2016.10.008}, author = {Polesello, Vania and Zupin, Luisa and Di Lenarda, Roberto and Biasotto, Matteo and Pozzato, Gabriele and Ottaviani, Giulia and Gobbo, Margherita and Crovella, Sergio and Segat, Ludovica} } @article {10486, title = {Lack of Prenylated Proteins, Autophagy Impairment and Apoptosis in SH-SY5Y Neuronal Cell Model of Mevalonate Kinase Deficiency.}, journal = {Cell Physiol Biochem}, volume = {41}, year = {2017}, month = {2017}, pages = {1649-1660}, abstract = {

BACKGROUND/AIMS: Mevalonate Kinase Deficiency (MKD), is a hereditary disease due to mutations in mevalonate kinase gene (MVK). MKD has heterogeneous clinical phenotypes: the correlation between MVK mutations and MKD clinical phenotype is still to be fully elucidated. Deficiency of prenylated proteins has been hypothesized as possible MKD pathogenic mechanism. Based on this hypothesis and considering that neurologic impairment characterizes Mevalonic Aciduria (MA), the most severe form of MKD, we studied the effects of I268T and N301T MVK mutations on protein prenylation, autophagy and programmed cell death in SH-SY5Y neuroblastoma cell lines.

METHODS: SH-SY5Y cells were transiently transfected, with the pCMV-6 plasmid containing MVK wild type and the two mutated sequences. Protein prenylation levels were evaluated using GFP-RhoA-F to assess farnesylation, and GFP-RhoA to evaluate geranylgeranylation; autophagy was measured by evaluating LC3 and p62 protein levels, while Annexin V-FITC and Propidium Iodide staining allowed apoptosis detection.

RESULTS: MVK mutants{\textquoteright} over-expression causes decreased levels of farnesylation and geranylgeranylation, and also increased LC3 lipidation in SH-SY5Y, with concomitant p62 accumulation. Treatment with bafilomycin A1 (an inhibitor of vacuolar H+-ATPase, a late autophagy inhibitor) further increase LC3-II and p62 levels, suggesting that degradation of autophagolysosome could be impaired. SH-SY5Y, with both MVK mutants, showed apoptosis increase; the presence of N301T associated with augmented cell death.

CONCLUSIONS: We hypothesize that mevalonate pathway impairment causes alteration of farnesylation and geranylgeranylation proteins and alteration of the autophagic flux; these changes can induce apoptosis, possibly more relevant in the presence of N301T mutation.

}, keywords = {Animals, Apoptosis, Autophagy, Cell Line, Tumor, Macrolides, Mevalonate Kinase Deficiency, Microtubule-Associated Proteins, Models, Biological, Mutation, Phosphotransferases (Alcohol Group Acceptor), Protein Prenylation, Rats}, issn = {1421-9778}, doi = {10.1159/000471235}, author = {Tricarico, Paola Maura and Romeo, Alessandra and Gratton, Rossella and Crovella, Sergio and Celsi, Fulvio} } @article {10489, title = {Zika virus induces inflammasome activation in the glial cell line U87-MG.}, journal = {Biochem Biophys Res Commun}, volume = {492}, year = {2017}, month = {2017 10 28}, pages = {597-602}, abstract = {

In the last years, neurological complications related to Zika virus (ZIKV) infection have emerged as an important threat to public health worldwide. ZIKV infection has been associated to neurological disorders such as congenital microcephaly in newborns and Guillain-Barr{\'e} syndrome, myelopathy and encephalitis in adults. ZIKV is characterized by neurotropism and neurovirulence. Several studies have identified microglial nodules, gliosis, neuronal and glial cells degeneration and necrosis in the brain of ZIKV infected infants, suggesting that ZIKV could play a role in these neurological disorders through neuroinflammation and microglial activation. Little information is available about neuroinflammation and ZIKV-related neurological disorders. Therefore, we investigated if ZIKV is able to infect a glial cell line (U87-MG) and how the glial cell line responds to this infection in terms of inflammation (IL-1β, NLRP-3 and CASP-1), oxidative stress (SOD2 and HemeOX) and cell death. We observed a significant increase of ZIKV load in both cells and supernatants after 72~h, compared to 48~h of infection. We found that ZIKV infection induces an increase of IL-1β, NLRP-3 and CASP-1 genes expression. Significant increase of IL-1β and unchanged pro-IL-1β protein levels have also been detected. Moreover, we observed SOD2 and HemeOX increased gene expression mainly after 72~h post ZIKV infection. Subsequently, we found a decrease of U87-MG cell viability, after both 48~h and 72~h of ZIKV infection. Our results show that U87-MG cells are susceptible to ZIKV infection. ZIKV is able to successfully replicate in infected cells causing oxidative stress, NLRP3 inflammasome activation and subsequent release of mature IL-1β; this process culminates in cell death. Thus, considering the central role of neuroinflammation in neurological disorders, it is important to comprehend every aspect of this mechanism in order to better understand the pathogenesis of ZIKV infection and to identify possible strategies to fight the virus by rescuing cell death.

}, keywords = {Apoptosis, Cell Line, Cytokines, Humans, Immunity, Innate, Inflammasomes, Inflammation Mediators, Neuroglia, Oxidative Stress, Virus Replication, Zika Virus}, issn = {1090-2104}, doi = {10.1016/j.bbrc.2017.01.158}, author = {Tricarico, Paola Maura and Caracciolo, Ilaria and Crovella, Sergio and D{\textquoteright}Agaro, Pierlanfranco} } @article {8310, title = {Association between p21 Ser31Arg polymorphism and the development of cervical lesion in women infected with high risk HPV.}, journal = {Tumour Biol}, volume = {37}, year = {2016}, month = {2016 Aug}, pages = {10935-41}, abstract = {

Infection by high-risk human papillomavirus (HR-HPV) and single nucleotide polymorphism (SNP) in genes involved in cell cycle control, as p21 and p27, are important factors in the development of different types of human cancers. This study aims at investigating whether both the p21 Ser31Arg and p27 V109G polymorphisms are associated with susceptibility to the development of cervical lesions in women HR-HPV positive. We analyzed 132 women HPV positive and with cervical lesions or CC and 154 healthy control (HPV negative and without cervical lesions). p21 Ser31Arg and p27 V109G polymorphisms were analyzed using the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method and sequencing. The p21 31Arg allele was associated with susceptibility for the development of cervical lesions (P* = 0.0009), while p27 V109G polymorphism showed no significant differences for this association (P* = 0.89). However, the combined effect of the polymorphisms showed that the presence of the CC genotype (SNP p21 Ser31Arg) conferred protection for the development of cervical lesions (OR = 0.39). p21 Ser31Arg and p27 V109G polymorphisms were not associated with the grade of cervical lesions (CINI, CINII, and CINIII) or CC (P* > 0.05). The HR-HPV more frequent in this study were of 16 (57.6~\%) and 18 (37.1~\%) types; however, no association was observed when both polymorphisms and risk factors analyzed were compared (P* > 0.05). Our findings suggest a possible association between p21 Ser31tabArg polymorphism and susceptibility to the development of cervical lesions in women from Pernambuco. Brazil.

}, issn = {1423-0380}, doi = {10.1007/s13277-016-4979-0}, author = {Lima, G{\'e}ssica and Santos, Erinaldo and Angelo, Hildson and Oliveira, Micheline and Her{\'a}clio, Sandra and Leite, Fernanda and de Melo, Celso and Crovella, Sergio and Maia, Maria and Souza, Paulo} } @article {8326, title = {CCR2 and CCR5 genes polymorphisms in women with cervical lesions from Pernambuco, Northeast Region of Brazil: a case-control study.}, journal = {Mem Inst Oswaldo Cruz}, volume = {111}, year = {2016}, month = {2016 Mar}, pages = {174-80}, abstract = {

Polymorphisms in chemokine receptors play an important role in the progression of cervical intraepithelial neoplasia (CIN) to cervical cancer (CC). Our study examined the association of CCR2-64I (rs1799864) andCCR5-Δ32 (rs333) polymorphisms with susceptibility to develop cervical lesion (CIN and CC) in a Brazilian population. The genotyping of 139 women with cervical lesions and 151 women without cervical lesions for the CCR2-64I and CCR5-Δ32 polymorphisms were performed using polymerase chain reaction-restriction fragment length polymorphism. The individuals carrying heterozygous or homozygous genotypes (GA+AA) for CCR2-64I polymorphisms seem to be at lower risk for cervical lesion [odds ratio (OR) = 0.37, p = 0.0008)]. The same was observed for the A allele (OR = 0.39, p = 0.0002), while no association was detected (p > 0.05) with CCR5-Δ32 polymorphism. Regarding the human papillomavirus (HPV) type, patients carrying the CCR2-64Ipolymorphism were protected against infection by HPV type 16 (OR = 0.35, p = 0.0184). In summary, our study showed a protective effect ofCCR2-64I rs1799864 polymorphism against the development of cervical lesions (CIN and CC) and in the susceptibility of HPV 16 infection.

}, issn = {1678-8060}, doi = {10.1590/0074-02760150367}, author = {Santos, Erinaldo Ubirajara Damasceno Dos and Lima, G{\'e}ssica Dayane Cordeiro de and Oliveira, Micheline de Lucena and Her{\'a}clio, Sandra de Andrade and Silva, Hildson Dornelas Angelo da and Crovella, Sergio and Maia, Maria de Mascena Diniz and Souza, Paulo Roberto Eleut{\'e}rio de} } @article {8502, title = {CD209 promoter polymorphisms associate with HCV infection and pegylated-interferon plus ribavirin treatment response.}, journal = {Mol Immunol}, volume = {76}, year = {2016}, month = {2016 Aug}, pages = {49-54}, abstract = {

Hepatitis C is a severe liver disease caused by hepatitis C virus that could persist in the host causing progression towards chronic disease in about 80\% of the cases. Pegylated-interferon plus ribavirin was the gold standard therapy, however treatment{\textquoteright}s response was quite variable among individuals and different host/viral factors may play a role in disease outcome. The cluster of differentiation 209 (CD209 antigen) is a component of the innate immune system able to recognize HCV and consequently activating the immune response. We enrolled 203 Italian HCV infected patients and 220 healthy controls investigating if five promoter polymorphisms within CD209 gene (encoding for CD209 antigen) correlated with HCV infection susceptibility, spontaneous viral clearance and interferon treatment response. CD209 -939G>A and -871A>G polymorphisms associated with HCV infection susceptibility, while, CD209 -871A>G and -336A>G polymorphisms associated with response to treatment. In conclusion, CD209 polymorphisms could play a role in the susceptibility to HCV infection as well as interferon treatment response in our study population from North-East of Italy.

}, issn = {1872-9142}, doi = {10.1016/j.molimm.2016.06.009}, author = {Zupin, Luisa and Polesello, Vania and Alberi, Giulia and Moratelli, Giulia and Croc{\`e}, Saveria Lory and Masutti, Flora and Pozzato, Gabriele and Crovella, Sergio and Segat, Ludovica} } @article {8296, title = {Chemokines SNPs in HIV-1+ Patients and Healthy Controls from Northeast Brazil: Association with Protection against HIV-1 Infection.}, journal = {Curr HIV Res}, volume = {14}, year = {2016}, month = {2016}, pages = {340-5}, abstract = {

BACKGROUND: HIV-1 virus is known to infect the host mainly through CD4+ T-lymphocyte cells, by interactions among the viral envelope proteins, CD4 receptor and HIV-1 coreceptors, such as chemokines receptors. Variations in the genes encoding HIV-1 coreceptors and their natural ligands have been shown to modify HIV-1 infection susceptibility and disease progression.

METHODS AND RESULTS: We analysed the distribution of SNPs in chemokines (CCL3, CCL4, CCL5, CXCL12) and chemokine receptor (CXCR6) genes, in 268 HIV-1 infected patients (HIV-1+) and 221 healthy controls from Northeast Brazil, and their possible connection with susceptibility to HIV-1 infection. The genotyping were performed through allele specific fluorogenic probes using real time PCR. We observed that the T alleles and AT genotype of rs1719153 CCL4 SNP were more frequent in healthy controls (19.8\% and 35.0\%, respectively) than in HIV-1+ patients (T allele: 14.1\%; OR=0.67; 95\%CI=0.47-0.95; p-value=0.020; and AT genotype: 24.4\%; OR=0.61; 95\%CI=0.40- 0.93; p-value=0.021) after correcting for age and sex. The rs1719134 (CCL3) and rs1719153 (CCL4) SNPs presented linkage disequilibrium (D{\textquoteright}=0.83). The AT haplotype frequency was increased in healthy controls (17.3\%) in relation to HIV-1+ patients (11.0\%; OR=0.62; 95\%CI=0.42-0.93; p-value=0.020).

CONCLUSION: Since our results revealed an increased frequency of alleles and genotypes of CCL3/CCL4 SNPs and haplotype (CCL3-CCL4) among healthy controls, we suggest that these variations might have a potential protective role against HIV-1 infection.

}, issn = {1873-4251}, author = {Celerino da Silva, Ronaldo and Victor Campos Coelho, Antonio and Cl{\'a}udio Arraes, Luiz and Andr{\'e} Cavalcanti Brand{\~a}o, Lucas and Lima Guimar{\~a}es, Rafael and Crovella, Sergio} } @article {8320, title = {DEFB1 gene polymorphisms and tuberculosis in a Northeastern Brazilian population.}, journal = {Braz J Microbiol}, volume = {47}, year = {2016}, month = {2016 Apr-Jun}, pages = {389-93}, abstract = {

β-Defensin-1, an antimicrobial peptide encoded by the DEFB1 gene, is known to play an important role in lung mucosal immunity. In our association study we analyzed three DEFB1 functional polymorphisms -52G>A (rs1799946), -44C>G (rs1800972) and -20G>A (rs11362) in 92 tuberculosis patients and 286 healthy controls, both from Northeast Brazil: no association was found between the studied DEFB1 polymorphisms and the disease. However we cannot exclude that this lack of association could be due to the low number of subjects analyzed, as suggested by the low statistical power achieved for the three analyzed SNPs (values between 0.16 and 0.50).

}, issn = {1678-4405}, doi = {10.1016/j.bjm.2015.09.001}, author = {Celerino da Silva, Ronaldo and da Cruz, Heidi Lacerda Alves and Brand{\~a}o, Lucas Andr{\'e} Cavalcanti and Guimar{\~a}es, Rafael Lima and Montenegro, Lilian Maria Lapa and Schindler, Haiana Charifker and Segat, Ludovica and Crovella, Sergio} } @article {8486, title = {DEFB1 polymorphisms and susceptibility to recurrent tonsillitis in Italian children.}, journal = {Int J Pediatr Otorhinolaryngol}, volume = {83}, year = {2016}, month = {2016 Apr}, pages = {12-5}, abstract = {

INTRODUCTION: The tonsils are secondary lymphoid organs fundamental for immune system response against pathogens within the oral cavity. Tonsillitis refers to inflammation of the pharyngeal tonsils that may include the adenoids and the lingual tonsils and that can be acute, recurrent, and chronic. Viral or bacterial infections, as well as immunologic factors are the main trigger to tonsillitis and disease{\textquoteright}s chronicity: the host immune responses, especially the innate one, could play an important role in susceptibility to the disease.

OBJECTIVES: The current study aims at investigating the role of functional polymorphisms in the 5{\textquoteright}UTR (c.-52G>A, c.-44G>C and c.-20G>A) of DEFB1 gene, encoding for the antimicrobial peptide human beta-defensin 1, in the predisposition to recurrent tonsillitis in children from North Eastern Italy.

RESULTS: No significant correlation was found between DEFB1 allele, genotype and haplotype frequencies and recurrent tonsillitis susceptibility with the exception of an increased risk to disease development in patients carrying DEFB1 rare haplotypes.

CONCLUSION: Our results may suggest that DEFB1 polymorphisms alone may not influence pathology susceptibility, however they could possibly concur, together with other factors involved in the genetic control of innate immune system, in the predisposition towards recurrent tonsillitis.

}, issn = {1872-8464}, doi = {10.1016/j.ijporl.2016.01.025}, author = {Zupin, Luisa and Polesello, Vania and Grasso, Domenico Leonardo and Crovella, Sergio and Segat, Ludovica} } @article {8519, title = {Epigenetic Signals on Plant Adaptation: A Biotic Stress Perspective.}, journal = {Curr Protein Pept Sci}, year = {2016}, month = {2016 Jul 24}, abstract = {

For sessile organisms such as plants, regulatory mechanisms of gene expression are vital, since they remain exposed to climatic and biological threats. Thus, they have to face hazards with instantaneous reorganization of their internal environment. For this purpose, besides the use of transcription factors, the participation of chromatin as an active factor in the regulation of transcription is crucial. Chemical changes in chromatin structure affect the accessibility of the transcriptional machinery and acting in signaling, engaging/inhibiting factors that participate in the transcription processes. Mechanisms in which gene expression undergoes changes without the occurrence of DNA gene mutations in the monomers that make up DNA, are understood as epigenetic phenomena. These include (1) post-translational modifications of histones, which results in stimulation or repression of gene activity and (2) cytosine methylation in the promoter region of individual genes, both preventing access of transcriptional activators as well as signaling the recruitment of repressors. There is evidence that such modifications can pass on to subsequent generations of daughter cells and even generations of individuals. However, reports indicate that they persist only in the presence of a stressor factor (or an inductor of the above-mentioned modifications). In its absence, these modifications weaken or lose heritability, being eliminated in the next few generations. In this review, it is argued how epigenetic signals influence gene regulation, the mechanisms involved and their participation in processes of resistance to biotic stresses, controlling processes of the plant immune system.

}, issn = {1875-5550}, author = {Neto, Jos{\'e} Ribamar Costa Ferreira and da Silva, Manass{\'e}s Daniel and Pandolfi, Valesca and Crovella, Sergio and Benko-Iseppon, Ana Maria and Kido, {\'E}derson Akio} } @article {8480, title = {Frequency of the CCR5-delta32 allele in Brazilian populations: A systematic literature review and meta-analysis.}, journal = {Infect Genet Evol}, volume = {43}, year = {2016}, month = {2016 Sep}, pages = {101-7}, abstract = {

The CCR5 is a chemokine receptor widely expressed by several immune cells that are engaged in inflammatory responses. Some populations have individuals exhibiting a 32bp deletion in the CCR5 gene (CCR5-delta32) that produces a truncated non-functional protein not expressed on the cell surface. This polymorphism, known to be associated with susceptibility to infectious and inflammatory diseases, such as osteomyelitis, pre-eclampsia, systemic lupus erythematous, juvenile idiopathic arthritis, rheumatoid arthritis and HIV/AIDS, is more commonly found in European populations with average frequency of 10\%. However, it is also possible to observe a significant frequency in other world populations, such as the Brazilian one. We performed a systematic review and meta-analysis of CCR5-delta32 genetic association studies in Brazilian populations throughout the country to estimate the frequency of this polymorphism. We also compared CCR5-delta32 frequencies across Brazilian regions. The systematic literature reviewed studies involving delta32 allele in Brazilian populations published from 1995 to 2015. Among the reviewed literature, 25 studies including 30 Brazilian populations distributed between the North, Northeast, South and Southeast regions were included in our meta-analysis. We observed an overall allelic frequency of 4\% (95\%-CI, 0.03-0.05), that was considered moderate and, notably, higher than some European populations, such as Cyprus (2.8\%), Italy (3\%) and Greece (2.4\%). Regarding the regional frequency comparisons between North-Northeast (N-NE) and South-Southeast (S-SE) regions, we observed an allelic frequency of 3\% (95\%-CI, 0.02-0.04) and 4\% (95\%-CI, 0.03-0.05), respectively. The populations from S-SE regions had a slightly higher CCR5-delta32 frequency than N-NE regions (OR=1.41, p=0.002). Although there are several studies about the CCR5-delta32 polymorphism and its effect on the immune response of some infectious diseases, this report is the first meta-analysis study that provides a descriptive study of the distribution of CCR5-delta32 allele in Brazilian population.

}, issn = {1567-7257}, doi = {10.1016/j.meegid.2016.05.024}, author = {Silva-Carvalho, Wlisses Henrique Veloso and De Moura, Ronald Rodrigues and Coelho, Ant{\^o}nio Victor Campos and Crovella, Sergio and Guimar{\~a}es, Rafael Lima} } @article {8522, title = {Heterologous Expression Systems for Plant Defensin Expression: Examples of Success and Pitfalls.}, journal = {Curr Protein Pept Sci}, year = {2016}, month = {2016 Jun 24}, abstract = {

Defensins are a superfamily of antimicrobial peptides, present in vertebrates, invertebrates, fungi and plants, suggesting that they appeared prior to the divergence in eukaryotes. The destitution of toxicity to mammalian cells of plant defensins has led to a new research ground, i.e., their potential medical use against human infectious diseases. Isolating defensins from natural sources, like plant tissues, can be time-consuming, labor intensive and usually present low yields. Strategies for large-scale production of purified active defensins have been employed using heterologous expression systems (HES) for defensin production, usually based in E. coli system. Like any other technology, HES present limitations and drawbacks demanding a careful experimental design prior the system selection. This review is proposed to discuss some of the major concerns when choosing to heterologously express plant defensins, with special attention on bacterial expression system.

}, issn = {1875-5550}, author = {Gazzaneo, Luis Rs and Pandolfi, Valesca and Jesus, Andr{\'e} Ls and Crovella, Sergio and Benko-Iseppon, Ana M and Freitas, Antonio Carlos} } @article {8300, title = {Iron signature in asbestos-induced malignant pleural mesothelioma: A population-based autopsy study.}, journal = {J Toxicol Environ Health A}, volume = {79}, year = {2016}, month = {2016}, pages = {129-41}, abstract = {

Malignant pleural mesothelioma (MPM) is an aggressive cancer with poor prognosis. The development of MPM is frequently linked to inhalation of asbestos fibers. A genetic component of susceptibility to this disease is suggested by the observation that some individuals develop MPM following lower doses of asbestos exposure, whereas others exposed to higher quantities do not seem to be affected. This hypothesis is supported also by frequent reports of MPM familial clustering. Despite the widely recognized role of iron (Fe) in cellular asbestos-induced pulmonary toxicity, the role of the related gene polymorphisms in the etiology of MPM has apparently not been evaluated. Eighty-six single-nucleotide polymorphisms (SNPs) of 10 Fe-metabolism genes were examined by exploiting formalin-fixed paraffin-embedded postmortem samples from 77 patients who died due to MPM (designated AEM) and compared with 48 who were exposed to asbestos but from died in old age of cause other than asbestos (designated AENM). All subjects showed objective signs of asbestos exposure. Three SNPs, localized in the ferritin heavy polypeptide, transferrin, and hephaestin genes, whose frequencies were distributed differently in AEM and AENM populations, were identified. For ferritin and transferrin the C/C and the G/G genotypes, respectively, representing intronic polymorphisms, were significantly associated with protection against MPM and need to be considered as possible genetic markers of protection. Similarly, the C/C hephaestin SNP, a missense variation of this multicopper ferroxidase encoding gene, may be related, also functionally, with protection against MPM. In conclusion, it is proposed that three Fe metabolism-associated genes, significantly associated with protection against development of MPM, may serve as protective markers for this aggressive tumor.

}, keywords = {Adult, Aged, Asbestos, Autopsy, Case-Control Studies, Female, Ferritins, Gene Frequency, Genetic Markers, Humans, Iron, Lung Neoplasms, Male, Membrane Proteins, Mesothelioma, Middle Aged, Mutation, Missense, Polymorphism, Single Nucleotide, Transferrin, Young Adult}, issn = {1528-7394}, doi = {10.1080/15287394.2015.1123452}, author = {Crovella, Sergio and Bianco, Anna Monica and Vuch, Joseph and Zupin, Luisa and Moura, Ronald Rodrigues and Trevisan, Elisa and Schneider, Manuela and Brollo, Alessandro and Nicastro, Enza Maria and Cosenzi, Alessandro and Zabucchi, Giuliano and Borelli, Violetta} } @article {8514, title = {Lactoferrin gene polymorphisms in Italian patients with recurrent tonsillitis.}, journal = {Int J Pediatr Otorhinolaryngol}, volume = {88}, year = {2016}, month = {2016 Sep}, pages = {153-6}, abstract = {

INTRODUCTION: Recurrent tonsillitis is an oral pathology characterized by inflammation of tonsils. The disease susceptibility depends upon environmental and host factors, specifically the innate immune response, the first line of host defence could play an important role. Among innate immunity members, lactoferrin, known for its antimicrobial properties, was previously correlated with the risk of oral pathology as periodontitis and dental caries.

METHODS: 89 Italian children presenting recurrent tonsillitis and 95 healthy children were genotyped for two LTF non-synonymous polymorphisms, called Thr29Ala and Arg47Lys, in order to investigate their potential role in recurrent tonsillitis susceptibility.

RESULTS: no different allele, genotype and haplotype frequency distributions were detected comparing patients and controls.

CONCLUSION: data from the current study indicate that LTF polymorphisms might not be involved in recurrent tonsillitis development in our Italian population. However, since the importance of lactoferrin in oral immunity has been previously assessed, further studies should be necessary to unravel the potential role of LTF genetic variants in oral cavity.

}, issn = {1872-8464}, doi = {10.1016/j.ijporl.2016.07.002}, author = {Zupin, Luisa and Angelelli, Francesco and Grasso, Domenico Leonardo and Crovella, Sergio} } @article {8287, title = {MBL2 genetic polymorphisms and HIV-1 mother-to-child transmission in Zambia.}, journal = {Immunol Res}, volume = {64}, year = {2016}, month = {2016 Jun}, pages = {775-84}, abstract = {

Since antiretroviral drugs have been introduced to prevent mother-to-child transmission, the risk of HIV-1 infection in infants has decreased considerably worldwide. Nevertheless, many factors are involved in viral transmission and host susceptibility to infection. The immune system and its components, including mannose binding protein C (encoding by MBL2 gene), are already known to play an important role in this scenario. In the present study, 313 children and 98 of their mothers from Zambia were genotyped for the MBL2 promoter HL (rs11003125) and XY (rs7096206) polymorphisms and exon 1 D (rs5030737, at codon 52) B (rs1800450, at codon 54) and C (rs1800451, at codon 57) polymorphisms in order to investigate the potential role of these genetic variants in HIV-1 mother-to-child transmission. No statistical significant association was observed comparing transmitter and non-transmitter mothers and also confronting HIV-positive and HIV-negative children. The findings of the current study obtained on mother and children from Zambia evidence lack of association between MBL2 functional polymorphisms and HIV-1 mother-to-child transmission.

}, issn = {1559-0755}, doi = {10.1007/s12026-015-8779-1}, author = {Zupin, Luisa and Polesello, Vania and Segat, Ludovica and Kuhn, Louise and Crovella, Sergio} } @article {8517, title = {Plant Elite Squad: First Defense Line and Resistance Genes - Identification, Diversity and Functional Roles.}, journal = {Curr Protein Pept Sci}, year = {2016}, month = {2016 Jul 24}, abstract = {

Plants exhibit sensitive mechanisms to respond to environmental stresses, presenting some specific and non-specific reactions when attacked by pathogens, including organisms from different classes and complexity, as viroids, viruses, bacteria, fungi and nematodes. A crucial step to define the fate of the plant facing an invading pathogen is the activation of a compatible Resistance (R) gene, the focus of the present review. Different aspects regarding R-genes and their products are discussed, including pathogen recognition mechanisms, signaling and effects on induced and constitutive defense processes, splicing and post transcriptional mechanisms involved. There are still countless challenges to the complete understanding of the mechanisms involving R-genes in plants, in particular those related to the interactions with other genes of the pathogen and of the host itself, their regulation, acting mechanisms at transcriptional and post-transcriptional levels, as well as the influence of other types of stress over their regulation. A magnification of knowledge is expected when considering the novel information from the omics and systems biology.

}, issn = {1875-5550}, author = {Wanderley-Nogueira, Ana Carolina and Bezerra-Neto, Jo{\~a}o Pac{\'\i}fico and Kido, {\'E}derson Akio and de Ara{\'u}jo, Fl{\'a}via Tadeu and Amorim, Lidiane Lindinalva Barbosa and Crovella, Sergio and Benko-Iseppon, Ana Maria} } @article {8518, title = {Plants Defense-related Cyclic Peptides: Diversity, Structure and Applications.}, journal = {Curr Protein Pept Sci}, year = {2016}, month = {2016 Jul 24}, abstract = {

Plant growth is prone to several unfavorable factors that may compromise or impair development and survival, including abiotic or biotic stressors. Aiming at defending themselves, plants have developed several strategies to survive and adapt to such adversities. Cyclotides are a family of plant-derived proteins that exhibit a diverse range of biological activities including antimicrobial and insecticidal activities that actively participate in plant defense processes. Three main categories of peptides have been described: (i) Cyclotides (ii) Sunflower Trypsin Inhibitor (SFTI) and (iii) peptides MCoTI-I and II, from Momordica cochinchinensis. They comprise proteins of approximately 30 amino acids, containing a head-to-tail cyclized backbone, with three disulfide bonds configured in a cystine knot topology, therefore bearing greater peptide stability. Given their features and multifunctionality, cyclotides stand out as promising sources for the discovery of new antimicrobial agents. The present review describes cyclotide occurrence, abundance and action in plants, also their diversity and evolution. Considerations regarding their use in the context of biomedical and agronomical sciences uses are also presented.

}, issn = {1875-5550}, author = {Maria, Ana Carolina Wanderley-Nogueira and Bezerra-Neto, Jo{\~a}o Pac{\'\i}fico and Kido, {\'E}derson Akio and de Ara{\'u}jo, Fl{\'a}via Tadeu and Amorim, Lidiane Lindinalva Barbosa and Crovella, Sergio and Benko-Iseppon, Ana Maria} } @article {8306, title = {Protective Role of BST2 Polymorphisms in Mother-to-Child Transmission of HIV-1 and Adult AIDS Progression.}, journal = {J Acquir Immune Defic Syndr}, volume = {72}, year = {2016}, month = {2016 Jul 1}, pages = {237-41}, abstract = {

Bone marrow stromal cell antigen-2 (BST-2)/Tetherin is a restriction factor that prevents Human immunodeficiency virus type 1 (HIV-1) release from infected cells and mediates pro-inflammatory cytokine production. This study investigated the risk conferred by single nucleotide polymorphisms (rs919266, rs9192677, and rs9576) at BST-2 coding gene (BST2) in HIV-1 mother-to-child transmission and in disease progression. Initially, 101 HIV-1+ pregnant women and 331 neonates exposed to HIV-1 from Zambia were enrolled. Additional BST2 single nucleotide polymorphism analyses were performed in 2 cohorts with acquired immunodeficiency syndrome (AIDS) progression: an adult Brazilian cohort (37 rapid, 30 chronic and 21 long-term non-progressors) and an Italian pediatric cohort (21 rapid and 67 slow progressors). The rs9576A allele was nominally associated with protection during breastfeeding (P = 0.019) and individuals carrying rs919266 GA showed slower progression to AIDS (P = 0.033). Despite the influence of rs919266 and rs9576 on BST2 expression being still undetermined, a preventive role by BST2 polymorphisms was found during HIV-1 infection.

}, issn = {1944-7884}, doi = {10.1097/QAI.0000000000000949}, author = {Kamada, Anselmo J and Bianco, Anna M and Zupin, Luisa and Girardelli, Martina and Matte, Maria C C and Medeiros, R{\'u}bia Mar{\'\i}lia de and Almeida, Sabrina Esteves de Matos and Rocha, Marineide M and Segat, Ludovica and Chies, Jos{\'e} A B and Kuhn, Louise and Crovella, Sergio} } @article {8315, title = {Putative modifier genes in mevalonate kinase deficiency.}, journal = {Mol Med Rep}, volume = {13}, year = {2016}, month = {2016 Apr}, pages = {3181-9}, abstract = {

Mevalonate kinase deficiency (MKD) is an autosomal recessive auto-inflammatory disease, caused by impairment of the mevalonate pathway. Although the molecular mechanism remains to be elucidated, there is clinical evidence suggesting that other regulatory genes may be involved in determining the phenotype. The identification of novel target genes may explain non-homogeneous genotype-phenotype correlations, and provide evidence in support of the hypothesis that novel regulatory genes predispose or amplify deregulation of the mevalonate pathway in this orphan disease. In the present study, DNA samples were obtained from five patients with MKD, which were then analyzed using whole exome sequencing. A missense variation in the PEX11γ gene was observed in homozygosis in P2, possibly correlating with visual blurring. The UNG rare gene variant was detected in homozygosis in P5, without correlating with a specific clinical phenotype. A number of other variants were found in the five analyzed DNA samples from the MKD patients, however no correlation with the phenotype was established. The results of the presents study suggested that further analysis, using next generation sequencing approaches, is required on a larger sample size of patients with MKD, who share the same MVK mutations and exhibit {\textquoteright}extreme{\textquoteright} clinical phenotypes. As MVK mutations may be associated with MKD, the identification of specific modifier genes may assist in providing an earlier diagnosis.

}, issn = {1791-3004}, doi = {10.3892/mmr.2016.4918}, author = {Marcuzzi, Annalisa and Vozzi, Diego and Girardelli, Martina and Tricarico, Paola Maura and Knowles, Alessandra and Crovella, Sergio and Vuch, Josef and Tommasini, Alberto and Piscianz, Elisa and Bianco, Anna Monica} } @article {8520, title = {Resistance (R) Genes: Applications and Prospects for Plant Biotechnology and Breeding.}, journal = {Curr Protein Pept Sci}, year = {2016}, month = {2016 Jul 24}, abstract = {

The discovery of novel plant resistance (R) genes (including their homologs and analogs) opened interesting possibilities for controlling plant diseases caused by several pathogens. However, due to environmental pressure and high selection operated by pathogens, several crop plants have lost specificity, broad-spectrum or durability of resistance. On the other hand, the advances in plant genome sequencing and biotechnological approaches, combined with the increasing knowledge on R-genes have provided new insights on their applications for plant genetic breeding, allowing the identification and implementation of novel and efficient strategies that enhance or optimize their use for efficiently controlling plant diseases. The present review focuses on main perspectives of application of R-genes and its co-players for the acquisition of resistance to pathogens in cultivated plants, with emphasis on biotechnological inferences, including transgenesis, cisgenesis, directed mutagenesis and gene editing, with examples of success and challenges to be faced.

}, issn = {1875-5550}, author = {Pandolfi, Valesca and Neto, Jos{\'e} Ribamar Costa Ferreira and Silva, Manass{\'e}s Daniel and Amorim, Lidiane Lindinalva Barbosa and Wanderley-Nogueira, Ana Carolina and de Oliveira Silva, Roberta Lane and Kido, {\'E}derson Akio and Crovella, Sergio and Iseppon, Ana Maria Benko} } @article {8515, title = {Snakin: Structure, Roles and Applications of a Plant Antimicrobial Peptide.}, journal = {Curr Protein Pept Sci}, year = {2016}, month = {2016 Jun 19}, abstract = {

Snakins are plant antimicrobial peptides (AMPs) of the Snakin/GASA family, formed by three distinct regions: an N-terminal signal peptide; a variable site; and the GASA domain in the C-terminal region composed by twelve conserved cysteine residues that contribute to the biochemical stability of the molecule. These peptides are known to play different roles in response to a variety of biotic (i.e. induced by bacteria, fungi and nematode pathogens) and abiotic (salinity, drought and ROS) stressors, as well as in crosstalk promoted by plant hormones, with emphasis on abscisic and salicylic acid (ABA and SA, respectively). Such properties make snakin/GASA members promising biotechnological sources for potential therapeutic and agricultural applications. However, information regarding their tertiary structure, mode of action and function are not yet completely elucidated. The present review presents aspects of snakin structure, expression, functional studies and perspectives about the potential applications for agricultural and medical purposes.

}, issn = {1875-5550}, author = {Oliveira-Lima, Marx and Benko-Iseppon, Ana Maria and Neto, Jos{\'e} Ribamar Costa Ferreira and Rodr{\'\i}guez-Decuadro, Susana and Kido, {\'E}derson Akio and Crovella, Sergio and Pandolfi, Valesca} } @article {8516, title = {Transcription factors involved in plant resistance to pathogens.}, journal = {Curr Protein Pept Sci}, year = {2016}, month = {2016 Jun 19}, abstract = {

Phytopathogenic microorganisms have a significant influence on survival and productivity of several crop plants. Transcription factors (TFs) are important players in the response to biotic stresses, as insect attack and pathogen infection. In face of such adversities many TF families have been previously reported as differentially expressed in plants as a reaction to bacterial, fungal and viral infection. This review highlights recent progresses in understanding the structure, function, signal regulation and interaction of transcription factors with other proteins in response to pathogens. Hence, we focus on three families of transcription factors: ERF, bZIP and WRKY, due to their abundance, importance and the availability of functionally well-characterized members in response to pathogen attack. Their roles and the possibilities related to the use of this knowledge for engineering pathogen resistance in crop plants are also discussed.

}, issn = {1875-5550}, author = {Amorim, Lidiane L B and da Fonseca-Dos-Santos, Romulo and Guida-Santos, Mauro and Crovella, Sergio and Benko-Iseppon, Ana Maria} } @article {8521, title = {TRIM5 gene polymorphisms in HIV-1-infected patients and healthy controls from Northeastern Brazil.}, journal = {Immunol Res}, year = {2016}, month = {2016 Jul 8}, abstract = {

Humans show heterogeneity in vulnerability to HIV-1 infection, partially under control of genes involved in host immunity and virus replication. TRIM5α protein has restriction activity against replication of many retroviruses. Human TRIM5 gene single nucleotide polymorphisms have been reported as involved in susceptibility to HIV-1 infection. We recruited 213 HIV-1-positive patients and 234 healthy uninfected controls from Northeast Brazil; two non-synonymous variants at exon 2, rs3740996 (H43Y) and rs10838525 (R136Q), and one regulatory polymorphism (rs16934386) at 5{\textquoteright}UTR region of TRIM5 were analyzed. The R136Q variation presented significant differences between HIV-1-positive patients and healthy controls. The 136Q allele and the 136QQ genotype were more frequent in healthy controls (32.7 and 10.2~\%, respectively) than in HIV-1-positive patients (136Q allele: 24.4~\%; OR 0.66; CI 95~\% 0.49-0.90; p value~=~0.008/136QQ genotype: 4.2~\%; OR 0.33; CI 95~\% 0.13-0.79, p~=~0.008) also after adjusting for age and sex. We also stratified our findings according to the presence of CCR5Δ32 variation, but the results remained the same. We observed that rs10838525 (R136Q) and rs3740996 (H43Y) were in linkage disequilibrium (D{\textquoteright}~=~0.71), forming four possible haplotypes. The H43-136Q haplotype was significantly more frequent in healthy controls (28.2~\%) than in HIV-positive patients (21.4~\%; OR 0.69; CI 95~\% 0.50-0.96; p~=~0.022). An increased frequency of allele (136Q) and genotype (136QQ) of the non-synonymous rs10838525 (R136Q) variant and the haplotype (43H-136Q) was observed among healthy controls individuals. Being aware of the limitation of this study (unavailability of exposed but uninfected individuals), we hypothesize a potential role for TRIM5 variations in the protection against HIV-1 infection.

}, issn = {1559-0755}, doi = {10.1007/s12026-016-8810-1}, author = {Celerino da Silva, Ronaldo and Coelho, Ant{\^o}nio Victor Campos and Arraes, Luiz Claudio and Brand{\~a}o, Lucas Andr{\'e} Cavalcanti and Crovella, Sergio and Guimar{\~a}es, Rafael Lima} } @article {7694, title = {Alendronate, a double-edged sword acting in the mevalonate pathway.}, journal = {Mol Med Rep}, volume = {12}, year = {2015}, month = {2015 Sep}, pages = {4238-42}, abstract = {

Aminobisphosphonate aledronate is a compound commonly used clinically for the treatment of osteoporosis and other bone diseases, as a result of it preventing bone resorption. However, in previous years it has also been used to obtain cellular and animal models of a rare genetic disorder termed Mevalonate Kinase Deficiency (MKD). MKD is caused by mutations affecting the mevalonate kinase enzyme, in the cholesterol pathway and alendronate can be used to biochemically mimic the genetic defect as it inhibits farnesyl pyrophosphate synthase in the same pathway. Despite evidence in favor of the inhibition exerted on the mevalonate pathway, there is at least one clinical case of MKD in which alendronate improved not only skeletal and bone fractures, as expected, but also MKD clinical features. Based on this finding, the present study assessed the anti-inflammatory properties of this aminobisphosphonate in vitro. No anti-inflammatory effects of alendronate were observed in the in vitro experiments. Since MKD lacks specific treatments, these results may assist scientists and physicians in making the decision as to the most suitable choice of therapeutic compounds for this neglected disease.

}, issn = {1791-3004}, doi = {10.3892/mmr.2015.3957}, author = {Tricarico, Paola Maura and Girardelli, Martina and Kleiner, Giulio and Knowles, Alessandra and Valencic, Erica and Crovella, Sergio and Marcuzzi, Annalisa} } @article {7713, title = {Association Study between Cervical Lesions and Single or Multiple Vaccine-Target and Non-Vaccine Target Human Papillomavirus (HPV) Types in Women from Northeastern Brazil.}, journal = {PLoS One}, volume = {10}, year = {2015}, month = {2015}, pages = {e0132570}, abstract = {

We performed an association between high-grade squamous intraepithelial lesions (HSIL), low-grade squamous intraepithelial lesions (LSIL) and single or multiple vaccine-target as well as non-vaccine target Human papillomavirus (HPV) types. Using bead-based HPV genotyping, 594 gynecological samples were genotyped. An association between squamous intraepithelial lesion (SIL) and presence of HPV16, 18, 31, 58 and 56 types were calculated. The risk was estimated by using odds ratio (OR) and 95\% of confidence intervals (CI). A total of 370 (62.3\%) women were HPV positive. Among these, 157 (42.7\%) presented a single HPV infection, and 212 (57.3\%) were infected by more than one HPV type. HPV31 was the most prevalent genotype, regardless single and multiple HPV infections. Single infection with HPV31 was associated with LSIL (OR=2.32; 95\%CI: 1.01 to 5.32; p=0.04); HPV31 was also associated with LSIL (OR=3.28; 95\%CI: 1.74 to 6.19; p= 0.0002) and HSIL (OR=3.82; 95\%CI: 2.10 to 6.97; p<0.001) in multiple HPV infections. Risk to harbor cervical lesions was observed in multiple HPV infections with regard to the HPV56 (OR=5.39; 95\%CI: 2.44 to 11.90; p<0.001for LSIL; OR=5.37; 95\%CI: 2.71 to 10.69; p<0.001) and HPV58 (OR=3.29; 95\%CI: 1.34 to 8.09; p=0.0091 for LSIL; OR=3.55; 95\%CI: 1.56 to 8.11; p=0.0026) genotypes. In addition, women coinfected with HPV16/31/56 types had 6 and 5-fold increased risk of HSIL (OR=6.46; 95\%CI: 1.89 to 22.09; p=0.002) and LSIL (OR=5.22; 95\%CI: 1.10 to 24.70; p=0.03), respectively. Multiple HPV infections without HPV16/18 has 2-fold increased risk of HSIL (OR=2.57; 95\%CI: 1.41 to 4.70; p=0.002) and LSIL OR=2.03; 95\%CI: 1.08 to 3.79; p=0.02). The results of this study suggest that single and multiple vaccine target as well as non-vaccine target HPV types are associated with LSIL and HSIL. These finding should be taken into consideration in the design of HPV vaccination strategies.

}, issn = {1932-6203}, doi = {10.1371/journal.pone.0132570}, author = {Chagas, B{\'a}rbara Simas and Comar, Manola and Gurgel, Ana Pavla Almeida Diniz and Paiva, S{\'e}rgio and Seraceni, Silva and de Freitas, Antonio Carlos and Crovella, Sergio} } @article {7746, title = {Comment to Santos et al., "hyper-IgD and periodic fever syndrome: a new MVK mutation (p.R277G) associated with a severe phenotype".}, journal = {Gene}, volume = {559}, year = {2015}, month = {2015 Mar 15}, pages = {99-101}, abstract = {

We performed molecular modeling analysis onto a novel mutation in the gene MVK, described by Santos et al., found to be causative of a severe form of Hyper-IgD/Mevalonate Kinase Deficiency. The mutation p.R277G, in our analysis, lowers the binding affinity for some enzyme{\textquoteright}s substrates. Interestingly, we found that p.R277G mutation inhibits binding of Isopentenyl Pyrophosphate (IPP) (binding free energy=0 kcal/mol), one of isoprenoids responsible for feedback-inhibition of MVK. IPP is known to be an activator of a specific class of T-cells and we can hypothesize that increased levels of this metabolite generate an aberrant immune system response. Indeed other experiments are needed to verify this hypothesis; however, this work demonstrates usefulness of molecular modeling in generating novel pathogenic hypothesis.

}, keywords = {Fever, Humans, Immunoglobulin D, Male, Mutation, Missense, Phosphotransferases (Alcohol Group Acceptor)}, issn = {1879-0038}, doi = {10.1016/j.gene.2015.01.029}, author = {Santos, Ruda de Luna Almeida and Crovella, Sergio and Celsi, Fulvio} } @article {8088, title = {The diagnostic challenge of very early-onset enterocolitis in an infant with XIAP deficiency.}, journal = {BMC Pediatr}, volume = {15}, year = {2015}, month = {2015}, pages = {208}, abstract = {

BACKGROUND: Aggressive course and resistance to treatments usually characterize very early onset inflammatory bowel disease (VEO-IBD). Some VEO-IBD cases are due to monogenic immune defects and can benefit from hematopoietic stem cell transplantation (HSCT).

CASE PRESENTATION: We describe a Caucasian male baby who presented in the first months of life macrophage activation syndrome, followed by intractable colitis, recurrent episodes of fever and mild splenomegaly. After several immunological, genetic and clinical investigations, subsequently a therapeutic attempt with colectomy, analysis of VEO-IBD-associated genes, revealed a causative mutation in XIAP. The genetic diagnosis of a primary immune deficiency allowed curing the boy with hematopoietic stem cell transplantation.

CONCLUSION: Our report, together with novel findings from recent literature, should contribute to increase awareness of monogenic immune defects as a cause of VEO-IBD. Comprehensive genetic analysis can allow a prompt diagnosis, resulting in the choice of effective treatments and sparing useless and damaging procedures.

}, issn = {1471-2431}, doi = {10.1186/s12887-015-0522-5}, author = {Girardelli, Martina and Arrigo, Serena and Barabino, Arrigo and Loganes, Claudia and Morreale, Giuseppe and Crovella, Sergio and Tommasini, Alberto and Bianco, Anna Monica} } @article {8057, title = {Ficolin Gene Polymorphisms in Systemic Lupus Erythematosus and Rheumatoid Arthritis.}, journal = {Ann Hum Genet}, year = {2015}, month = {2015 Oct 14}, abstract = {

Systemic lupus erythemathosus (SLE) and rheumatoid arthritis (RA) are complex autoimmune diseases characterized by an immune balance breakdown and by chronic inflammation. Several findings link SLE and RA development with the complement system and ficolin components have emerged as candidates for disease development. Since genetic association studies with ficolin genes in SLE and RA have not yet been conducted in a Brazilian population, the aim of this study was to determine whether polymorphisms of ficolin-1(FCN1) and ficolin-2 (FCN2) genes are associated with SLE and RA susceptibility as well as disease manifestation. Two SNPs within FCN1 (rs2989727 and 1071583) and three in FCN2 (rs17514136, rs3124954, and rs7851696) were studied in 208 SLE and184 RA patients as well as 264 healthy individuals in a Southeast Brazilian population. For SLE patients, the FCN2 rs17514136 SNP was associated with a more severe disease (SLICC) (p = 0.0067). Furthermore, an association between the occurrence of nephritis and the T/T genotype for FCN2 rs3124954 SNP (p = 0.047, OR = 3.17, 95\%CI = 1.34-7.5) was observed. No association was observed between the studied polymorphisms and RA development. Thus, our data support involvement of the FCN2 gene in the SLE phenotype.

}, issn = {1469-1809}, doi = {10.1111/ahg.12129}, author = {Addobbati, Catarina and De Azev{\^e}do Silva, Jaqueline and A C Tavares, Nath{\'a}lia and Monticielo, Odirlei and M Xavier, Ricardo and T Brenol, Jo{\~a}o Carlos and Crovella, Sergio and B Chies, Jos{\'e} Artur and Sandrin-Garcia, Paula} } @article {7774, title = {Genetic profiling of autoinflammatory disorders in patients with periodic fever: a prospective study.}, journal = {Pediatr Rheumatol Online J}, volume = {13}, year = {2015}, month = {2015}, pages = {11}, abstract = {

BACKGROUND: Periodic fever syndromes (PFS) are an emerging group of autoinflammatory disorders. Clinical overlap exists and multiple genetic analyses may be needed to assist diagnosis. We evaluated the diagnostic value of a 5-gene sequencing panel (5GP) in patients with undiagnosed PFS.

METHODS: Simultaneous double strand Sanger sequencing of MEFV, MVK, TNFRSF1A, NLRP3, NLRP12 genes was performed in 42 patients with unexplained PFS. Clinical features were correlated with genetic results.

RESULTS: None of 42 patients analyzed displayed a causative genotype. However, single or multiple genetic variants of uncertain significance were detected in 24 subjects. Only in 5 subjects a definite diagnosis was made by taking into account both genetic and clinical data (2 TRAPS syndrome; 2 FMF; 1 FCAS). Statistical analysis showed that patients carrying genetic variants in one or more of the five selected genes displayed a significantly lower response to glucocorticoids compared with subjects who had completely negative genetic results.

CONCLUSIONS: The sequencing of multiple genes is of little help in the diagnostics of PFS and can often lead to results of uncertain interpretation, thus the clinically driven sequencing of single genes should remain the recommended approach. However, the presence of single or multiple genetic variants of uncertain significance, even if not allowing any specific diagnosis, correlated with a poorer response to glucocorticoids, possibly indicating a multifactorial subgroup of PFS with differential response to pharmacological treatment.

}, keywords = {Adolescent, Carrier Proteins, Child, Cryopyrin-Associated Periodic Syndromes, Cytoskeletal Proteins, Familial Mediterranean Fever, Female, Fever, Gene Expression Profiling, Genotype, Hereditary Autoinflammatory Diseases, Humans, Intracellular Signaling Peptides and Proteins, Logistic Models, Male, Mutation, Phosphotransferases (Alcohol Group Acceptor), Prospective Studies, Receptors, Tumor Necrosis Factor, Type I, Syndrome}, issn = {1546-0096}, doi = {10.1186/s12969-015-0006-z}, author = {De Pieri, Carlo and Vuch, Josef and De Martino, Eleonora and Bianco, Anna M and Ronfani, Luca and Athanasakis, Emmanouil and Bortot, Barbara and Crovella, Sergio and Taddio, Andrea and Severini, Giovanni M and Tommasini, Alberto} } @article {3588, title = {GRID2 a novel gene possibly associated with mevalonate kinase deficiency.}, journal = {Rheumatol Int}, volume = {35}, year = {2015}, month = {2015 Apr}, pages = {657-9}, abstract = {

Mevalonate kinase deficiency (MKD) is a rare autosomal disease caused by mutations in the mevalonate kinase gene (MVK). The genotype-phenotype correlation is sometimes problematic due to the great genetic and clinical heterogeneity; so we hypothesize that genes other than MVK are able to modulate MKD clinical phenotypes. This hypothesis was tested by analyzing the exome of 22 patients with MKD all carrying MVK gene mutations, and 20 patients with recurrent fevers (RF) not carrying MVK mutations. Our preliminary findings suggest a possible role of GRID2 in the susceptibility to develop MKD. GRID2 gene (4q22.2), encoding for human glutamate receptor delta-2, associated with MKD: The rs1450500 SNP was differently distributed in patients with MKD with respect to those with RF. Being aware of the small number of patients analyzed, we hypothesized a possible role for GRID2 as possible phenotype modifier in MKD patients, especially in those with severe phenotypes.

}, issn = {1437-160X}, doi = {10.1007/s00296-014-3115-y}, author = {Moura, Ronald and Tricarico, Paola Maura and Campos Coelho, Antonio Victor and Crovella, Sergio} } @article {3626, title = {HLA-G and susceptibility to develop celiac disease.}, journal = {Hum Immunol}, volume = {76}, year = {2015}, month = {2015 Jan}, pages = {36-41}, abstract = {

The Human Leukocyte Antigen-G has immunomodulatory function and its expression has been associated with several diseases. In our study we analyzed HLA-G polymorphisms in order to evaluate their possible association with susceptibility to celiac disease development. A total of 420 celiac patients and 509 controls were genotyped for HLA-G polymorphisms. We sequenced 800bp upstream the ATG codon (5{\textquoteright} upstream regulatory region) and the whole 3{\textquoteright} untranslated region of the HLA-G gene, whereas the ΔC deletion at exon 3 was detected by RFLP-PCR. Five polymorphisms (namely -477 C>G, -369 C>A, 14bp del/ins, 3187 A>G, 3196 C>G) and one haplotype (TCGGTACGAAITCCCGAG) were significantly more frequent in celiac patients than controls and associated with increased disease susceptibility. The 14bp I/I, 3187 G/G, 3196 G/G genotypes and TCGGTACGAAITCCCGAG haplotype, were still significantly associated with increased disease susceptibility (and in addition also the 3003 C/C genotype) when the analysis was restricted to patients and controls presenting the DQ2.5 or DQ8 HLA-DQ celiac disease risk haplotypes. Our findings indicate an association between HLA-G gene polymorphisms and susceptibility to celiac disease development, suggesting that HLA-G molecule is possibly involved in the pathogenesis of the disease.

}, keywords = {Adolescent, Adult, Alleles, Case-Control Studies, Celiac Disease, Child, Female, Gene Frequency, Genetic Predisposition to Disease, Haplotypes, HLA-DQ Antigens, HLA-G Antigens, Humans, Male, Middle Aged, Polymorphism, Genetic, Retrospective Studies}, issn = {1879-1166}, doi = {10.1016/j.humimm.2014.12.006}, author = {Catamo, Eulalia and Zupin, Luisa and Segat, Ludovica and Celsi, Fulvio and Crovella, Sergio} } @article {7684, title = {Impact of DEFB1 gene regulatory polymorphisms on hBD-1 salivary concentration.}, journal = {Arch Oral Biol}, volume = {60}, year = {2015}, month = {2015 Jul}, pages = {1054-8}, abstract = {

OBJECTIVES: Human β-defensin 1 (hBD-1) is an antimicrobial peptide involved in epithelial defence of various tissues, also present in the saliva. Individual genetic variations within the DEFB1 gene, encoding for hBD-1, could influence gene expression and protein production.

DESIGN: Three DEFB1 polymorphisms at 5{\textquoteright} untranslated region (UTR), -52G > A (rs1799946), -44C > G (rs1800972) and -20G > A (rs11362), and two polymorphisms at DEFB1 3{\textquoteright} UTR, c*5G > A (rs1047031) and c*87A > G (rs1800971), were analysed by direct sequencing and correlated with hDB-1 salivary concentration (tested with enzyme-linked immunosorbent assay (ELISA)) in 40 healthy subjects.

RESULTS: Significant associations were found between individuals presenting different DEFB1 polymorphisms at positions -52 and -44 of the gene and hBD-1 salivary concentrations: -52 G/G carriers had higher levels of protein than G/A and A/A; -44C/G subjects showed a higher protein concentration than homozygous wild-type C/C. For the -20G > A, c*5G > A and c*87A > G polymorphisms, no statistically significant differences were found. Combined haplotype analysis confirmed the results obtained considering the single-nucleotide polymorphisms (SNPs) singularly.

CONCLUSION: Polymorphisms in the DEFB1 gene influence hBD-1 production and, therefore, could modify the innate immune system responses and, consequently, the oral health.

}, issn = {1879-1506}, doi = {10.1016/j.archoralbio.2015.03.009}, author = {Polesello, Vania and Zupin, Luisa and Di Lenarda, Roberto and Biasotto, Matteo and Ottaviani, Giulia and Gobbo, Margherita and Cecco, Luca and Alberi, Giulia and Pozzato, Gabriele and Crovella, Sergio and Segat, Ludovica} } @article {3616, title = {Interleukin-18 gene promoter polymorphisms and celiac disease in Italian patients.}, journal = {Mol Biol Rep}, volume = {42}, year = {2015}, month = {2015 Feb}, pages = {525-33}, abstract = {

Celiac disease (CD) is the most common food-sensitive enteropathy in genetically susceptible individuals. The major genetic risk factors known are specific human leukocyte antigen (HLA)-DQ haplotypes, but other genetic factors are supposed to be involved. Interleukin-18 (IL-18) is a pro-inflammatory cytokine that has an important role in the immune defense and it has the potential to influence inflammatory disorders. IL-18 is able to promote Th1 cell development and it is expressed in the mucosa of the small intestine in celiac patients. Given the IL-18 biological role, and since a few studies have previously suggested its involvement in CD, in order to investigate the role of IL18 gene in the susceptibility to CD we have performed a case-control study, analyzing two IL18 gene promoter polymorphisms, previously reported to impair the transcriptional activity of the gene, (-137G > C and -607C > A, rs187238 and rs1946518 respectively). A total of 556 CD Italian patients and 582 controls, further stratified for HLA class II (DQ) CD risk haplotypes were enrolled. The -607A > C A allele and A/A genotype, as well as the combination of this allele with the -137G allele in the AG haplotype, were associated with an increased risk towards CD development, in particular in HLA-DQ2.2 patients. Although the association was very moderate, our results indicate the possible involvement of IL18 gene in the susceptibility to CD, and for this reason we do think it should deserve further investigation.

}, issn = {1573-4978}, doi = {10.1007/s11033-014-3796-z}, author = {Zupin, Luisa and Catamo, Eulalia and Polesello, Vania and Crovella, Sergio and Segat, Ludovica} } @article {7756, title = {Knockdown of MVK does not lead to changes in NALP3 expression or activation.}, journal = {J Inflamm (Lond)}, volume = {12}, year = {2015}, month = {2015}, pages = {7}, abstract = {

BACKGROUND: Mutations in the Mevalonate Kinase gene (MVK) are causes of a rare autoinflammatory disease: Mevalonate Kinase Deficiency and its more acute manifestation, Mevalonic Aciduria. The latter is characterized, among other features, by neuroinflammation, developmental delay and ataxia, due to failed cerebellar development or neuronal death through chronic inflammation. Pathogenesis of neuroinflammation in Mevalonate Kinase Deficiency and Mevalonic Aciduria has not yet been completely clarified, however different research groups have been suggesting the inflammasome complex as the key factor in the disease development. A strategy to mimic this disease is blocking the mevalonate pathway, using HMG-CoA reductase inhibitors (Statins), while knock-out mice for Mevalonate Kinase are non-vital and their hemyzygous (i.e only one copy of gene preserved) littermate display almost no pathological features.

FINDINGS: We sought to generate a murine cellular model closely resembling the pathogenic conditions found in vivo, by direct silencing of Mevalonate Kinase gene. Knockdown of Mevalonate Kinase in a murine microglial cellular model (BV-2 cells) results in neither augmented NALP3 expression nor increase of apoptosis. On the contrary, statin treatment of BV-2 cells produces an increase both in Mevalonate Kinase and NALP3 expression.

CONCLUSIONS: MKD deficiency could be due or affected by protein accumulation leading to NALP3 activation, opening novel questions about strategies to tackle this disease.

}, issn = {1476-9255}, doi = {10.1186/s12950-015-0048-5}, author = {Celsi, Fulvio and Piscianz, Elisa and Romano, Maurizio and Crovella, Sergio} } @article {7683, title = {Lactotransferrin gene functional polymorphisms do not influence susceptibility to human immunodeficiency virus-1 mother-to-child transmission in different ethnic groups.}, journal = {Mem Inst Oswaldo Cruz}, volume = {110}, year = {2015}, month = {2015 Apr}, pages = {222-9}, abstract = {

Lactotransferrin, also known as lactoferrin, is an iron binding glycoprotein that displays antiviral activity against many different infectious agents, including human immunodeficiency virus (HIV)-1. Lactotransferrin is present in the breast milk and in the female genitourinary mucosa and it has been hypothesised as a possible candidate to prevent mother-to-child HIV-1 transmission. To verify if two functional polymorphisms, Thr29Ala and Arg47Lys, in the lactotransferrin encoding gene (LTF) could affect HIV-1 infection and vertical transmission, a preliminary association study was performed in 238 HIV-1 positive and 99 HIV-1 negative children from Brazil, Italy, Africa and India. No statistically significant association for the Thr29Ala and Arg47Lys LTF polymorphisms and HIV-1 susceptibility in the studied populations was found. Additionally LTF polymorphisms frequencies were compared between the four different ethnic groups.

}, keywords = {Acquired Immunodeficiency Syndrome, Adolescent, Brazil, Child, Cohort Studies, Ethnic Groups, Female, Gene Frequency, Genetic Predisposition to Disease, Genotyping Techniques, HIV-1, Humans, India, Infant, Newborn, Infectious Disease Transmission, Vertical, Italy, Lactoferrin, Male, Polymorphism, Single Nucleotide, Real-Time Polymerase Chain Reaction, Retrospective Studies, Zimbabwe}, issn = {1678-8060}, doi = {10.1590/0074-02760140447}, author = {Zupin, Luisa and Polesello, Vania and Coelho, Ant{\^o}nio Victor Campos and Boniotto, Michele and Arraes, Luiz Claudio and Segat, Ludovica and Crovella, Sergio} } @article {7758, title = {MBL2 polymorphisms in women with atypical squamous cells of undetermined significance.}, journal = {J Med Virol}, volume = {87}, year = {2015}, month = {2015 May}, pages = {851-9}, abstract = {

Infection with high risk Human papillomavirus (HPV) is the main known cause of cervical cancer. HPV induces different grades of lesions: among them, Atypical squamous cells of undetermined significance are abnormal lesions that could evolve in pre-cancer lesions or spontaneously regress. The mannose binding lectin (MBL) is an innate immunity serum protein also found in cervico-vaginal mucosa, whose expression is known to be affected by polymorphisms in exon 1 and promoter of the MBL2 gene. In the present study the possible association between MBL2 functional polymorphisms and susceptibility to develop atypical squamous cells of undetermined significance was investigated in a group of women from North-East of Italy, stratified for HPV infection status. The MBL2 D and O alleles and the deficient producer combined genotypes, responsible for low MBL production, were more represented among atypical squamous cells of undetermined significance positive women than healthy controls and the results were confirmed when only HPV negative samples were considered. These results suggest a possible involvement of MBL2 functional polymorphisms in atypical squamous cells of undetermined significance susceptibility.

}, keywords = {Adolescent, Adult, Atypical Squamous Cells of the Cervix, Female, Gene Frequency, Genetic Predisposition to Disease, Humans, Italy, Mannose-Binding Lectin, Polymorphism, Single Nucleotide, Young Adult}, issn = {1096-9071}, doi = {10.1002/jmv.24080}, author = {Zupin, Luisa and Polesello, Vania and Casalicchio, Giorgia and Freato, Nadia and Maestri, Iva and Comar, Manola and Crovella, Sergio and Segat, Ludovica} } @article {7750, title = {Meta-analysis and time series modeling allow a systematic review of primary HIV-1 drug-resistant prevalence in Latin America and Caribbean.}, journal = {Curr HIV Res}, volume = {13}, year = {2015}, month = {2015}, pages = {125-42}, abstract = {

Here we review the prevalence of HIV-1 primary drug resistance in Latin America and Caribbean using meta-analysis as well as time-series modeling. We also discuss whether there could be a drawback to HIV/AIDS programs due to drug resistance in Latin America and Caribbean in the next years. We observed that, although some studies report low or moderate primary drug resistance prevalence in Caribbean countries, this evidence needs to be updated. In other countries, such as Brazil and Argentina, the prevalence of drug resistance appears to be rising. Mutations conferring resistance against reverse transcriptase inhibitors were the most frequent in the analyzed populations (70\% of all mutational events). HIV-1 subtype B was the most prevalent in Latin America and the Caribbean, although subtype C and B/F recombinants have significant contributions in Argentina and Brazil. Thus, we suggest that primary drug resistance in Latin America and the Caribbean could have been underestimated. Clinical monitoring should be improved to offer better therapy, reducing the risk for HIV-1 resistance emergence and spread, principally in vulnerable populations, such as men who have sex with men transmission group, sex workers and intravenous drug users.

}, issn = {1873-4251}, author = {Coelho, Ant{\^o}nio Victor Campos and De Moura, Ronald Rodrigues and da Silva, Ronaldo Celerino and Kamada, Anselmo Jiro and Guimar{\~a}es, Rafael Lima and Brand{\~a}o, Lucas Andr{\'e} Cavalcanti and Coelho, Hem{\'\i}lio Fernandes Campos and Crovella, Sergio} } @article {7770, title = {Meta-analysis of Brazilian genetic admixture and comparison with other Latin America countries.}, journal = {Am J Hum Biol}, volume = {27}, year = {2015}, month = {2015 Sep-Oct}, pages = {674-80}, abstract = {

OBJECTIVES: This study aims at performing a systematic review and meta-analysis with the studies of genetic admixture inference of Brazilian population and to compare these results with the genetic admixture levels in other Latin American countries.

METHODS: We searched for articles regarding the estimation of Brazilian genetic admixture published between 1980 and 2014 that used autosomal markers. Then, conducted meta-analyses at the whole-country and regional level. Finally, we compared the results of Brazil with other estimates from other South, Central and North American countries.

RESULTS: We analyzed data from 25 studies in 38 different Brazilian populations. European (EUR) ancestry is the major contributor to the genetic background of Brazilians, followed by African (AFR), and Amerindian (AMR) ancestries. The pooled ancestry contributions were 0.62 EUR, 0.21 AFR, and 0.17AMR. The Southern region had a greater EUR contribution (0.77) than other regions. Individuals from the Northeast (NE) region had the highest AFR contribution (0.27) whereas individuals from the North regions had more AMR contribution (0.32). In the Latin America context, Brazil has the 5th high EUR contribution, the 12th for the AFR component and the 10th for the AMR ancestry.

CONCLUSIONS: Admixture proportions vary greatly among Brazilian populations and also through Latin America. More studies in the Center-West, North and NE regions are needed to capture a more complete picture of the genomic ancestry of Brazil.

}, issn = {1520-6300}, doi = {10.1002/ajhb.22714}, author = {Moura, Ronald Rodrigues de and Coelho, Ant{\^o}nio Victor Campos and Balbino, Valdir de Queiroz and Crovella, Sergio and Brand{\~a}o, Lucas Andr{\'e} Cavalcanti} } @article {7714, title = {Mevalonate Pathway Blockade, Mitochondrial Dysfunction and Autophagy: A Possible Link.}, journal = {Int J Mol Sci}, volume = {16}, year = {2015}, month = {2015}, pages = {16067-84}, abstract = {

The mevalonate pathway, crucial for cholesterol synthesis, plays a key role in multiple cellular processes. Deregulation of this pathway is also correlated with diminished protein prenylation, an important post-translational modification necessary to localize certain proteins, such as small GTPases, to membranes. Mevalonate pathway blockade has been linked to mitochondrial dysfunction: especially involving lower mitochondrial membrane potential and increased release of pro-apoptotic factors in cytosol. Furthermore a severe reduction of protein prenylation has also been associated with defective autophagy, possibly causing inflammasome activation and subsequent cell death. So, it is tempting to hypothesize a mechanism in which defective autophagy fails to remove damaged mitochondria, resulting in increased cell death. This mechanism could play a significant role in Mevalonate Kinase Deficiency, an autoinflammatory disease characterized by a defect in Mevalonate Kinase, a key enzyme of the mevalonate pathway. Patients carrying mutations in the MVK gene, encoding this enzyme, show increased inflammation and lower protein prenylation levels. This review aims at analysing the correlation between mevalonate pathway defects, mitochondrial dysfunction and defective autophagy, as well as inflammation, using Mevalonate Kinase Deficiency as a model to clarify the current pathogenetic hypothesis as the basis of the disease.

}, issn = {1422-0067}, doi = {10.3390/ijms160716067}, author = {Tricarico, Paola Maura and Crovella, Sergio and Celsi, Fulvio} } @article {7688, title = {Microglia activation and interaction with neuronal cells in a biochemical model of mevalonate kinase deficiency.}, journal = {Apoptosis}, volume = {20}, year = {2015}, month = {2015 Aug}, pages = {1048-55}, abstract = {

Mevalonate kinase deficiency is a rare disease whose worst manifestation, characterised by severe neurologic impairment, is called mevalonic aciduria. The progressive neuronal loss associated to cell death can be studied in vitro with a simplified model based on a biochemical block of the mevalonate pathway and a subsequent inflammatory trigger. The aim of this study was to evaluate the effect of the mevalonate blocking on glial cells (BV-2) and the following effects on neuronal cells (SH-SY5Y) when the two populations were cultured together. To better understand the cross-talk between glial and neuronal cells, as it happens in vivo, BV-2 and SH-SY5Y were co-cultured in different experimental settings (alone, transwell, direct contact); the effect of mevalonate pathway biochemical block by Lovastatin, followed by LPS inflammatory trigger, were evaluated by analysing programmed cell death and mitochondrial membrane potential, cytokines{\textquoteright} release and cells{\textquoteright} morphology modifications. In this experimental condition, glial cells underwent an evident activation, confirmed by elevated pro-inflammatory cytokines release, typical of these disorders, and a modification in morphology. Moreover, the activation induced an increase in apoptosis. When glial cells were co-cultured with neurons, their activation caused an increase of programmed cell death also in neuronal cells, but only if the two populations were cultured in direct contact. Our findings, being aware of the limitations related to the cell models used, represent a preliminary step towards understanding the pathological and neuroinflammatory mechanisms occurring in mevalonate kinase diseases. Contact co-culture between neuronal and microglial cells seems to be a good model to study mevalonic aciduria in vitro, and to contribute to the identification of potential drugs able to block microglial activation for this orphan disease. In fact, in such a pathological condition, we demonstrated that microglial cells are activated and contribute to neuronal cell death. We can thus hypothesise that the use of microglial activation blockers could prevent this additional neuronal death.

}, issn = {1573-675X}, doi = {10.1007/s10495-015-1139-8}, author = {Tricarico, Paola Maura and Piscianz, Elisa and Monasta, Lorenzo and Kleiner, Giulio and Crovella, Sergio and Marcuzzi, Annalisa} } @article {7732, title = {NLRP1 and NLRP3 polymorphisms in mesothelioma patients and asbestos exposed individuals a population-based autopsy study from North East Italy.}, journal = {Infect Agent Cancer}, volume = {10}, year = {2015}, month = {2015}, pages = {26}, abstract = {

NRLP1 (rs12150220, rs9889625, rs9900356, rs6502867, rs2670660) and NLRP3 (rs35829419, rs10754558) polymorphisms have been analyzed in 69 subjects with documented asbestos exposure and death for malignant pleural mesothelioma and 59 patients with documented asbestos exposure but death for other causes, all from a North East Italy. No association was found between NLRP1 and NLRP3 polymorphisms and susceptibility to develop mesothelioma using the general, dominant or recessive models. Also haplotype analysis did not reveal any significant association with mesothelioma. Our findings, being controversial with respect to another study on Italian patients, do suggest the need of further studies to unravel the contribution of NLRP1 and NLRP3 in susceptibility to mesothelioma.

}, issn = {1750-9378}, doi = {10.1186/s13027-015-0022-0}, author = {Borelli, Violetta and Moura, Ronal R and Trevisan, Elisa and Crovella, Sergio} } @article {7695, title = {Pediatric patients with inflammatory bowel disease exhibit increased serum levels of proinflammatory cytokines and chemokines, but decreased circulating levels of macrophage inhibitory protein-1β, interleukin-2 and interleukin-17.}, journal = {Exp Ther Med}, volume = {9}, year = {2015}, month = {2015 Jun}, pages = {2047-2052}, abstract = {

Inflammatory bowel disease (IBD) is a chronic and progressive inflammatory condition of the gastrointestinal tract. Although the causative events that lead to the onset of IBD are yet to be fully elucidated, deregulation of immune and inflammatory mechanisms are hypothesized to significantly contribute to this disorder. Since the onset of IBD is often during infancy, in the present study, the serum values of a large panel of cytokines and chemokines in pediatric patients (<18 years; n=26) were compared with age-matched controls (n=37). While elevations in the serum level of several proinflammatory and immune regulating cytokines were confirmed, such as interleukin (IL)-1β, IL-5, IL-7, interferon (IFN)-γ-inducible protein-10, IL-16, cutaneous T-cell-attracting chemokine, leukemia inhibitory factor, monokine induced by γ-IFN, IFN-α2 and IFN-γ, notably decreased levels of IL-2, IL-17 and macrophage inhibitory protein-1β were also observed. Therefore, while a number of proinflammatory cytokines exhibit increased levels in IBD patients, pediatric IBD patients may also exhibit certain aspects of a reduced immunological response.

}, issn = {1792-0981}, doi = {10.3892/etm.2015.2370}, author = {Kleiner, Giulio and Zanin, Valentina and Monasta, Lorenzo and Crovella, Sergio and Caruso, Lorenzo and Milani, Daniela and Marcuzzi, Annalisa} } @article {7709, title = {Tumor necrosis factor (TNF) alpha and interleukin (IL) 18 genes polymorphisms are correlated with susceptibility to HPV infection in patients with and without cervical intraepithelial lesion.}, journal = {Ann Hum Biol}, year = {2015}, month = {2015 Jun 16}, pages = {1-8}, abstract = {

BACKGROUND: The Human Papillomavirus (HPV) predisposes 500 000 women to cervical cancer. Host genetic background may facilitate virus persistence in the uterine cervix. Polymorphisms in regulatory and coding regions of cytokine genes have been associated with susceptibility to some human diseases.

AIM: This study aims at investigating whether TNFA -308 G/A and IL18 -137 G/C and -607 C/A polymorphisms are associated with susceptibility to HPV infection/progression to high-grade squamous intraepithelial lesion (HSIL).

SUBJECTS AND METHODS: One hundred and twenty-two HPV infected and 132 HPV negative women (the latter used as healthy controls) were analysed. TNFA -308 G/A and IL18 (-137G/C and -607 C/A) polymorphisms were analysed using specific sequence polymorphism PCR (SSP-PCR). Univariate statistical analysis and a logistic regression were performed.

RESULTS: The TNFA -308A allele was associated with susceptibility to HPV infection (p = 0.0008), while the IL18 -607A allele conferred protection against HPV infection (p = 0.0043). TNFA -308 G/A and IL18 (-137G/C and -607 C/A) polymorphisms were not associated with development of cervical lesions (p > 0.05). An association was also observed between smoking and susceptibility to the development of HSIL.

CONCLUSION: The findings suggest an association between two TNFA SNPs and susceptibility to HPV infection in women from Northeast Brazil. The results need to be functionally validated and replicated in other populations with different ethnic backgrounds.

}, issn = {1464-5033}, doi = {10.3109/03014460.2014.1001436}, author = {Tavares, Mayara C Mansur and de Lima J{\'u}nior, S{\'e}rgio F and Coelho, Antonio V C and Marques, Tr{\'\i}cia Ruschelle N M and de Ara{\'u}jo, Di{\^e}go Henrique T and Her{\'a}clio, Sandra de A and Amorim, Mel{\^a}nia M Ramos and de Souza, Paulo Roberto E and Crovella, Sergio} } @article {8032, title = {On the use of Chinese population as a proxy of Amerindian ancestors in genetic admixture studies with Latin American populations.}, journal = {Eur J Hum Genet}, year = {2015}, month = {2015 Sep 2}, issn = {1476-5438}, doi = {10.1038/ejhg.2015.184}, author = {de Moura, Ronald R and de Queiroz Balbino, Valdir and Crovella, Sergio and Brand{\~a}o, Lucas A C} } @article {8095, title = {Vitamin D receptor polymorphisms and expression profile in rheumatoid arthritis brazilian patients.}, journal = {Mol Biol Rep}, year = {2015}, month = {2015 Dec 19}, abstract = {

Rheumatoid arthritis (RA) is an autoimmune disease characterized by chronic inflammation and important joint commitment, being the most common systemic autoimmune disease worldwide. RA displays important genetic background with a variety of genes contributing to the immune balance breakdown. Recent studies have demonstrated that vitamin D, through its receptor (VDR), is able to regulate the immune balance and suppress the autoimmunity process, being a potential target in autoimmune diseases. In the present genetic association study, we assessed 5 Tag single nucleotide polymorphisms (SNPs) (rs11168268, rs2248098, rs1540339, rs4760648 and rs3890733), which cover most of the VDR gene, in three different Brazilian populations (from Northeast, Southeast and South Brazil). We also evaluated the VDR expression profile in whole blood and monocytes from RA patients. For genotyping study, 428 RA patients and 616 healthy controls were genotyped with fluorogenic allele specific probes on an ABI7500 platform. For gene expression study, VDR mRNA levels of 15 RA patients and 26 healthy individuals were assessed by RT-PCR. Our results showed that SNPs rs4760648 and rs3890733 are associated to RA susceptibility (p value~=~0.0026, OR 1.31 and p value~=~0.0091, OR 1.28 with statistical power~=~0.999 and 0.993, respectively). Regarding RA clinical features, the studied SNPs did not show significant associations. The gene expression assays showed that VDR mRNA levels were down regulated in both whole blood (-3.3 fold) and monocytes (-3.2 fold) of RA patients when compared to healthy controls. Our results, the first reported for distinct Brazilian populations, support a role of the VDR gene in the susceptibility to RA.

}, issn = {1573-4978}, doi = {10.1007/s11033-015-3937-z}, author = {Cavalcanti, Catarina Addobbati Jord{\~a}o and De Azev{\^e}do Silva, Jaqueline and de Barros Pita, Will and Veit, Tiago Degani and Monticielo, Odirlei Andre and Xavier, Ricardo Machado and Brenol, Jo{\~a}o Carlos Tavares and Brenol, Cleiton Viegas and Fragoso, Thiago Sotero and Barbosa, Alexandre Domingues and Duarte, {\^A}ngela Luiza Branco Pinto and Oliveira, Ren{\^e} Donizeti Ribeiro and Louzada-J{\'u}nior, Paulo and Donadi, Eduardo Ant{\^o}nio and Crovella, Sergio and Chies, Jos{\'e} Artur Bogo and Sandrin-Garcia, Paula} } @article {3530, title = {Association of CD209 and CD209L polymorphisms with tuberculosis infection in a Northeastern Brazilian population.}, journal = {Mol Biol Rep}, volume = {41}, year = {2014}, month = {2014 Aug}, pages = {5449-57}, abstract = {

Tuberculosis (TB) caused by Mycobacterium tuberculosis, is major cause of morbidity and mortality worldwide. So far, many candidate genes have been investigated for their possible association with TB. Dendritic cell-specific intercellular adhesion molecule 3 (ICAM-3) grabbing non-integrin (DC-SIGN) and Liver/lymph node-specific intercellular adhesion molecule-grabbing non-integrin (L-SIGN), encoded by CD209 and CD209L genes respectively, are known for binding to M. tuberculosis on human dendritic cells and macrophages. We screened 4 single nucleotide polymorphisms (SNPs) in the promoter region of CD209, namely -939G>A (rs735240), -871A>G (rs735239), -336A>G (rs4804803) and -139G>A (rs2287886) and tandem repeat polymorphisms in exon 4 of CD209 and CD209L genes looking for association with TB in a Northeastern Brazilian population (295 subjects, 131~TB patients and 164 healthy controls). The -139G>A and -939G>A SNPs were associated with susceptibility to TB, and in particular with pulmonary and extra-pulmonary forms respectively. The -871A>G and -336A>G SNPs were associated, the first with protection to both pulmonary and extra-pulmonary TB, the latter only with the pulmonary form. An association between GGAG haplotype and protection to TB infection was also found. Also tandem repeat polymorphism in CD209L exon 4 was associated with TB infection. This study provides evidence of an association between CD209 and CD209L polymorphisms and TB development in a Brazilian population, suggesting that variations in these genes may influence the protection and susceptibility to infection caused by M. tuberculosis.

}, keywords = {Adult, Alleles, Brazil, Case-Control Studies, Cell Adhesion Molecules, Dendritic Cells, Female, Genetic Predisposition to Disease, Haplotypes, Humans, Lectins, C-Type, Male, Mycobacterium tuberculosis, Polymorphism, Single Nucleotide, Promoter Regions, Genetic, Receptors, Cell Surface, Tuberculosis, Young Adult}, issn = {1573-4978}, doi = {10.1007/s11033-014-3416-y}, author = {da Silva, Ronaldo Celerino and Segat, Ludovica and da Cruz, Heidi Lacerda Alves and Schindler, Haiana Charifker and Montenegro, Lilian Maria Lapa and Crovella, Sergio and Guimar{\~a}es, Rafael Lima} } @article {3490, title = {Beta defensin-1 gene polymorphisms and susceptibility to atypical squamous cells of undetermined significance lesions in Italian gynecological patients.}, journal = {J Med Virol}, volume = {86}, year = {2014}, month = {2014 Dec}, pages = {1999-2004}, abstract = {

The role of the human beta-defensin 1 (hBD-1) in the susceptibility to the onset of the Atypical Squamous Cells of Undetermined Significance (ASCUS) lesion, in the presence or not of HPV infection, is still unknown. In the current study, the three functional single nucleotide polymorphisms (SNPs) -52G > A, -44C > G, and -20G > A at the 5{\textquoteright} un-translated region (UTR) of DEFB1 gene, encoding hBD-1, were analyzed in ASCUS lesion gynecological patients and healthy women from the north-east of Italy (Trieste). Cervical samples from 249 European-Caucasian women were collected, screened for HPV and cytologically evaluated; DEFB1 genotyping has been performed by direct sequencing. No significant differences were found for -52G > A, -44C > G, and -20G > A SNPs allele and genotype frequencies between women with and without ASCUS lesions. DEFB1 minor haplotypes were significantly more frequent in ASCUS lesion positive than negative women, associating with an increased risk of this type of lesion. When women were stratified according to HPV infection status, significant differences in the distribution of -52G > A SNP genotype frequencies were found: the presence of the A allele in the homozygous genotype A/A associated with a lower risk of developing ASCUS lesions in HPV negative women. DEFB1 minor haplotypes were also associated with an increased risk of developing ASCUS lesions, being significantly more frequent in HPV negative women with lesions, than without lesions. Although these results highlight the possible involvement of DEFB1, further studies are needed to support the role of DEFB1 in the modulation of the susceptibility to ASCUS lesions.

}, keywords = {5{\textquoteright} Untranslated Regions, Adolescent, Adult, Atypical Squamous Cells of the Cervix, beta-Defensins, Female, Genotype, Humans, Italy, Papillomavirus Infections, Polymorphism, Single Nucleotide, Sequence Analysis, DNA, Uterine Cervical Neoplasms, Young Adult}, issn = {1096-9071}, doi = {10.1002/jmv.23878}, author = {Casalicchio, Giorgia and Freato, Nadia and Maestri, Iva and Comar, Manola and Crovella, Sergio and Segat, Ludovica} } @article {3518, title = {Block of the mevalonate pathway triggers oxidative and inflammatory molecular mechanisms modulated by exogenous isoprenoid compounds.}, journal = {Int J Mol Sci}, volume = {15}, year = {2014}, month = {2014}, pages = {6843-56}, abstract = {

Deregulation of the mevalonate pathway is known to be involved in a number of diseases that exhibit a systemic inflammatory phenotype and often neurological involvements, as seen in patients suffering from a rare disease called mevalonate kinase deficiency (MKD). One of the molecular mechanisms underlying this pathology could depend on the shortage of isoprenoid compounds and the subsequent mitochondrial damage, leading to oxidative stress and pro-inflammatory cytokines{\textquoteright} release. Moreover, it has been demonstrated that cellular death results from the balance between apoptosis and pyroptosis, both driven by mitochondrial damage and the molecular platform inflammasome. In order to rescue the deregulated pathway and decrease inflammatory markers, exogenous isoprenoid compounds were administered to a biochemical model of MKD obtained treating a murine monocytic cell line with a compound able to block the mevalonate pathway, plus an inflammatory stimulus. Our results show that isoprenoids acted in different ways, mainly increasing the expression of the evaluated markers [apoptosis, mitochondrial dysfunction, nucleotide-binding oligomerization-domain protein-like receptors 3 (NALP3), cytokines and nitric oxide (NO)]. Our findings confirm the hypothesis that inflammation is triggered, at least partially, by the shortage of isoprenoids. Moreover, although further studies are necessary, the achieved results suggest a possible role for exogenous isoprenoids in the treatment of MKD.

}, keywords = {Animals, Apoptosis, Carotenoids, Carrier Proteins, Cell Line, Cytokines, Diterpenes, Humans, Mevalonate Kinase Deficiency, Mevalonic Acid, Mice, Mitochondria, Nitric Oxide, Phytol, Terpenes}, issn = {1422-0067}, doi = {10.3390/ijms15046843}, author = {Tricarico, Paola Maura and Kleiner, Giulio and Valencic, Erica and Campisciano, Giuseppina and Girardelli, Martina and Crovella, Sergio and Knowles, Alessandra and Marcuzzi, Annalisa} } @article {3585, title = {DC-SIGN polymorphisms are associated to type 1 diabetes mellitus.}, journal = {Immunobiology}, volume = {219}, year = {2014}, month = {2014 Nov}, pages = {859-65}, abstract = {

Type I diabetes mellitus (T1DM) is an autoimmune disorder featured by raised glucoses levels. It has been hypothesised that raised glucose levels in T1DM might be recognised as PAMPs, leading to immune response by overloading the cell receptors for pathogens recognition. DC-SIGN is a transmembrane protein, present in dendritic cells (DC) and macrophages: it has an important role in inflammatory response and T cells activation. Notably, DC-SIGN activation and triggering of the immune response depend on the type of ligand, which may lead to a pro or anti-inflammatory pathway. In our association study, we analysed the SNPs rs4804803 (-336 A>G) and rs735239 (-871 A>G), both at DC-SIGN promoter region, in 210 T1DM patients and 157 healthy controls, also looking for a correlation with the age of onset of the disease. We found that the allele G and genotypes G/G and A/G of SNP-871 (rs735239), as well as the alleles G-G (rs735239-rs4804803) and genotypes combined AA-GG (rs735239-rs4804803) were associated with protection of T1DM development. We did not find association between these variations with the age of onset of the disease and the presence of other autoimmune disorders. Our results suggest that SNPs in DC-SIGN promoter region can be associated to protection for T1DM in the Northeast Brazilian population.

}, keywords = {Adolescent, Alleles, Case-Control Studies, Cell Adhesion Molecules, Child, Child, Preschool, Diabetes Mellitus, Type 1, Female, Gene Frequency, Genetic Association Studies, Genetic Predisposition to Disease, Genotype, Humans, Infant, Infant, Newborn, Lectins, C-Type, Male, Odds Ratio, Polymorphism, Genetic, Polymorphism, Single Nucleotide, Promoter Regions, Genetic, Receptors, Cell Surface}, issn = {1878-3279}, doi = {10.1016/j.imbio.2014.07.011}, author = {da Silva, Ronaldo Celerino and Cunha Tavares, Nath{\'a}lia de Alencar and Moura, Ronald and Coelho, Ant{\^o}nio and Guimar{\~a}es, Rafael Lima and Ara{\'u}jo, Jacqueline and Crovella, Sergio and Brand{\~a}o, Lucas Andr{\'e} Cavalcanti and Silva, Jaqueline de Azev{\^e}do} } @article {3623, title = {DEFB1 polymorphisms are involved in susceptibility to human papillomavirus infection in Brazilian gynaecological patients.}, journal = {Mem Inst Oswaldo Cruz}, volume = {109}, year = {2014}, month = {2014 Nov}, pages = {918-22}, abstract = {

The human beta defensin 1 (hBD-1) antimicrobial peptide is a member of the innate immune system known to act in the first line of defence against microorganisms, including viruses such as human papillomavirus (HPV). In this study, five functional polymorphisms (namely g-52G>A, g-44C>G and g-20G>A in the 5{\textquoteright}UTR and c.*5G>A and c.*87A>G in the 3{\textquoteright}UTR) in the DEFB1 gene encoding for hBD-1 were analysed to investigate the possible involvement of these genetic variants in susceptibility to HPV infection and in the development of HPV-associated lesions in a population of Brazilian women. The DEFB1 g-52G>A and c.*5G>A single-nucleotide polymorphisms (SNPs) and the GCAAA haplotype showed associations with HPV-negative status; in particular, the c.*5G>A SNP was significantly associated after multiple test corrections. These findings suggest a possible role for the constitutively expressed beta defensin-1 peptide as a natural defence against HPV in the genital tract mucosa.

}, keywords = {Adolescent, Adult, Aged, beta-Defensins, Brazil, Case-Control Studies, Female, Genetic Predisposition to Disease, Haplotypes, Humans, Middle Aged, Papillomavirus Infections, Polymorphism, Single Nucleotide, Reproductive Tract Infections, Young Adult}, issn = {1678-8060}, author = {Segat, Ludovica and Zupin, Luisa and Moura, Ronald Rodrigues and Coelho, Ant{\^o}nio Victor Campos and Chagas, B{\'a}rbara Simas and de Freitas, Antonio Carlos and Crovella, Sergio} } @article {3491, title = {Exome analysis of HIV patients submitted to dendritic cells therapeutic vaccine reveals an association of CNOT1 gene with response to the treatment.}, journal = {J Int AIDS Soc}, volume = {17}, year = {2014}, month = {2014}, pages = {18938}, abstract = {

INTRODUCTION: With the aim of searching genetic factors associated with the response to an immune treatment based on autologous monocyte-derived dendritic cells pulsed with autologous inactivated HIV, we performed exome analysis by screening more than 240,000 putative functional exonic variants in 18 HIV-positive Brazilian patients that underwent the immune treatment.

METHODS: Exome analysis has been performed using the ILLUMINA Infinium HumanExome BeadChip. zCall algorithm allowed us to recall rare variants. Quality control and SNP-centred analysis were done with GenABEL R package. An in-house implementation of the Wang method permitted gene-centred analysis.

RESULTS: CCR4-NOT transcription complex, subunit 1 (CNOT1) gene (16q21), showed the strongest association with the modification of the response to the therapeutic vaccine (p=0.00075). CNOT1 SNP rs7188697 A/G was significantly associated with DC treatment response. The presence of a G allele indicated poor response to the therapeutic vaccine (p=0.0031; OR=33.00; CI=1.74-624.66), and the SNP behaved in a dominant model (A/A vs. A/G+G/G p=0.0009; OR=107.66; 95\% CI=3.85-3013.31), being the A/G genotype present only in weak/transient responders, conferring susceptibility to poor response to the immune treatment.

DISCUSSION: CNOT1 is known to be involved in the control of mRNA deadenylation and mRNA decay. Moreover, CNOT1 has been recently described as being involved in the regulation of inflammatory processes mediated by tristetraprolin (TTP). The TTP-CCR4-NOT complex (CNOT1 in the CCR4-NOT complex is the binding site for TTP) has been reported as interfering with HIV replication, through post-transcriptional control. Therefore, we can hypothesize that genetic variation occurring in the CNOT1 gene could impair the TTP-CCR4-NOT complex, thus interfering with HIV replication and/or host immune response.

CONCLUSIONS: Being aware that our findings are exclusive to the 18 patients studied with a need for replication, and that the genetic variant of CNOT1 gene, localized at intron 3, has no known functional effect, we propose a novel potential candidate locus for the modulation of the response to the immune treatment, and open a discussion on the necessity to consider the host genome as another potential variant to be evaluated when designing an immune therapy study.

}, keywords = {AIDS Vaccines, Dendritic Cells, Exome, HIV Infections, Humans, Immunity, Humoral, Oligonucleotide Array Sequence Analysis, Polymorphism, Single Nucleotide, Transcription Factors, Treatment Outcome}, issn = {1758-2652}, doi = {10.7448/IAS.17.1.18938}, author = {Moura, Ronald and Pontillo, Alessandra and d{\textquoteright}Adamo, Pio and Pirastu, Nicola and Campos Coelho, Antonio and Crovella, Sergio} } @article {3610, title = {F402L variant in NLRP12 in subjects with undiagnosed periodic fevers and in healthy controls.}, journal = {Clin Exp Rheumatol}, volume = {32}, year = {2014}, month = {2014 Nov-Dec}, pages = {993-4}, keywords = {Cryopyrin-Associated Periodic Syndromes, Female, Humans, Intracellular Signaling Peptides and Proteins, Male, Mutation}, issn = {0392-856X}, author = {De Pieri, Carlo and Vuch, Josef and Athanasakis, Emmanouil and Severini, Giovanni Maria and Crovella, Sergio and Bianco, Anna Monica and Tommasini, Alberto} } @article {3486, title = {Influence of HLA-G polymorphisms in human immunodeficiency virus infection and hepatitis C virus co-infection in Brazilian and Italian individuals.}, journal = {Infect Genet Evol}, volume = {21}, year = {2014}, month = {2014 Jan}, pages = {418-23}, abstract = {

OBJECTIVE: This study aimed to investigate the role of Human Leukocyte Antigen (HLA)-G in the susceptibility to HIV-1 infection through the analysis of the HLA-G 3{\textquoteright} untranslated region (UTR) polymorphisms 14 bp insertion/deletion (rs66554220) and +3142C>G (rs1063320).

DESIGN: We analyzed 582 HIV-1 infected patients and 626 uninfected individuals from Brazil and Italy in a case-control study.

METHODS: HLA-G polymorphisms were genotyped using PCR, PCR-RFLP assays or direct sequencing. All analyses were stratified by ethnicity. Genotypic, allelic and diplotypic frequencies were compared between HIV-1 infected subjects and controls using Chi-square or Fischer exact tests. Also, haplotypic frequencies were estimated using MLocus software.

RESULTS: African-derived HIV-infected individuals presented a higher frequency of the 14 bp insertion allele as compared to non-infected individuals (0.468 versus 0.373, respectively; p(Bonf) = 0.010). A higher frequency of the 14 bp insertion +3142G (insG) haplotype (0.456 versus 0.346, p<0.001) and the insG/insG diplotype (OR=1.88, 95\%CI = 1.08-3.23, p=0.021) was observed among African-derived patients as compared to uninfected controls. Also, we observed a higher frequency of the ins/ins genotype among African-derived HIV patients co-infected with HCV (OR=2.78, 95\%CI = 1.20-6.49, p = 0.008).

CONCLUSIONS: Our data point out to an increased frequency of alleles and genotypes associated with low HLA-G expression among African-derived patients, suggesting a potential role for HLA-G in the susceptibility to HIV-1 infection and HCV co-infection in those individuals.

}, keywords = {3{\textquoteright} Untranslated Regions, Adolescent, Adult, African Continental Ancestry Group, Aged, Brazil, Coinfection, Gene Frequency, Genetic Variation, Haplotypes, Hepatitis C, HIV Infections, HLA-G Antigens, Humans, Italy, Male, Middle Aged, Polymorphism, Single Nucleotide, Young Adult}, issn = {1567-7257}, doi = {10.1016/j.meegid.2013.12.013}, author = {da Silva, G K and Vianna, Priscila and Veit, Tiago Degani and Crovella, Sergio and Catamo, Eulalia and Cordero, Elvira Alicia Aparicio and Mattevi, Vanessa Su{\~n}{\'e} and Lazzaretti, Rosmeri Kuhmmer and Sprinz, Eduardo and Kuhmmer, Regina and Chies, Jos{\'e} Artur Bogo} } @article {3523, title = {Interleukin-10 gene promoter polymorphisms in celiac patients from north-eastern Italy.}, journal = {Hum Immunol}, volume = {75}, year = {2014}, month = {2014 Jul}, pages = {656-61}, abstract = {

Celiac disease is a complex chronic intestinal disorder driven by an immune response against the gliadin fraction of gluten: many factors are involved in the pathogenesis of the disease, and among these Interleukin-10 could play an important role. In the present study, the -1082A>G, -819T>C and -592A>C IL10 functional polymorphisms were analyzed in 565 celiac patients and 576 healthy controls from north-eastern Italy, stratified for HLA class II celiac disease risk haplotypes. No significant differences were observed for the three IL10 polymorphisms distribution between celiac patients and controls with the exception of a slightly increased risk for the -1082A allele in HLA-DQ8 male individuals. Although our findings suggest that the IL10 genetic variants analyzed do not have a major role in the susceptibility to the development of celiac disease in north-eastern Italian patients, we think that the possible involvement of IL10 gene in CD should deserve further investigation and that large-scale studies are recommended to confirm our findings.

}, keywords = {Adolescent, Adult, Aged, Aged, 80 and over, Alleles, Case-Control Studies, Celiac Disease, Child, Child, Preschool, European Continental Ancestry Group, Female, Gene Frequency, HLA-DQ Antigens, Humans, Interleukin-10, Italy, Male, Middle Aged, Models, Genetic, Polymorphism, Single Nucleotide, Promoter Regions, Genetic, Risk Factors, Sex Factors}, issn = {1879-1166}, doi = {10.1016/j.humimm.2014.04.011}, author = {Zupin, Luisa and Polesello, Vania and Catamo, Eulalia and Crovella, Sergio and Segat, Ludovica} } @article {3492, title = {LIG4 and RAD52 DNA repair genes polymorphisms and systemic lupus erythematosus.}, journal = {Mol Biol Rep}, volume = {41}, year = {2014}, month = {2014}, pages = {2249-56}, abstract = {

Systemic lupus erythematosus (SLE) is a complex autoimmune disorder with a strong genetic background. Nevertheless, SLE might also be triggered due to environmental factors, such as UV light exposure. DNA double strand breaks (DSBs) may be induced secondarily by UV radiation, increasing DNA immunogenicity and in SLE patients DNA repair is diminished, allowing the accumulation of DSBs and genomic instability. LIG4 and RAD52 genes play important roles in DNA repair mechanisms and a recent microarray analysis showed their differential expression in active SLE patients. In this study we investigated a potential association between LIG4 and RAD52 single nucleotide polymorphisms (SNPs) and SLE predisposition in a Southeast Brazilian population. We assessed four Tag SNPs in LIG4 and three in RAD52 gene region, encompassing most of the gene sequence, in 158 SLE patients and 212 healthy controls. We also performed SNPs analysis considering clinical manifestation, gender and ethnicity in SLE patients. Our data did not show association between LIG4 and RAD52 SNPs and SLE, its clinical manifestations or ethnicity in the tested population. The analysis regarding ethnicity and SLE clinical manifestations indicated Caucasian-derived patients as more susceptible to cutaneous and hematological alterations than the African-derived. To our knowledge, this is the first association study involving LIG4 and RAD52 genes and SLE predisposition.

}, keywords = {Adult, Alleles, Brazil, Case-Control Studies, DNA Ligases, DNA Repair, Ethnic Groups, Female, Genetic Linkage, Genetic Predisposition to Disease, Genotype, Haplotypes, Humans, Lupus Erythematosus, Systemic, Male, Middle Aged, Odds Ratio, Polymorphism, Single Nucleotide, Rad52 DNA Repair and Recombination Protein}, issn = {1573-4978}, doi = {10.1007/s11033-014-3076-y}, author = {De Azev{\^e}do Silva, Jaqueline and Pancotto, Jo{\~a}o Alexandre Tr{\'e}s and Donadi, Eduardo Ant{\^o}nio and Crovella, Sergio and Sandrin-Garcia, Paula} } @article {3505, title = {Mevalonate kinase deficiency and IBD: shared genetic background.}, journal = {Gut}, volume = {63}, year = {2014}, month = {2014 Aug}, pages = {1367-8}, keywords = {Genetic Predisposition to Disease, Humans, Inflammatory Bowel Diseases}, issn = {1468-3288}, doi = {10.1136/gutjnl-2013-306555}, author = {Bianco, Anna Monica and Girardelli, Martina and Vozzi, Diego and Crovella, Sergio and Kleiner, Giulio and Marcuzzi, Annalisa} } @article {3624, title = {NLRP3 polymorphism is associated with protection against human T-lymphotropic virus 1 infection.}, journal = {Mem Inst Oswaldo Cruz}, volume = {109}, year = {2014}, month = {2014 Nov}, pages = {960-3}, abstract = {

Inter-individual heterogeneity in the response to human T-lymphotropic virus 1 (HTLV-1) infection has been partially attributed to host genetic background. The antiviral activity of the inflammasome cytoplasmic complex recognises viral molecular patterns and regulates immune responses via the activation of interleukin (IL)-1 family (IL-1, IL-18 and IL-33) members. The association between polymorphisms in the inflammasome receptors NLRP1 and NLRP3 and HTLV-1 infection was evaluated in a northeastern Brazilian population (84 HTLV-1 carriers and 155 healthy controls). NLRP3 rs10754558 G/G was associated with protection against HTLV-1 infection (p = 0.012; odds ratio = 0.37). rs10754558 affects NLRP3 mRNA stability; therefore, our results suggest that higher NLRP3 expression may augment first-line defences, leading to the effective protection against HTLV-1 infection.

}, keywords = {Adult, Brazil, Carrier Proteins, Female, Genetic Predisposition to Disease, HTLV-I Infections, Human T-lymphotropic virus 1, Humans, Inflammasomes, Interleukin-1, Male, Middle Aged, Polymorphism, Single Nucleotide, Protective Factors}, issn = {1678-8060}, author = {Kamada, Anselmo Jiro and Pontillo, Alessandra and Guimar{\~a}es, Rafael Lima and Loureiro, Paula and Crovella, Sergio and Brand{\~a}o, Lucas Andr{\'e} Cavalcanti} } @article {3603, title = {Non-classical MHC-I human leukocyte antigen (HLA-G) in hepatotropic viral infections and in hepatocellular carcinoma.}, journal = {Hum Immunol}, volume = {75}, year = {2014}, month = {2014 Dec}, pages = {1225-31}, abstract = {

The human leukocyte antigen (HLA)-G is a "nonclassical" major histocompatibility complex (MHC) class Ib gene, located at chromosome 6, in the 6p21.3 region. The HLA-G presents immunomodulatory functions essential in pregnancy for the tolerance of the semi-allogenic fetus, but an abnormal expression of HLA-G has been observed in numerous pathological conditions, such as tumors, autoimmune diseases and viral infections. In recent years, numerous studies have assessed the clinical relevance of HLA-G expression in different types of cancer: in general, a higher HLA-G expression correlates with a lower survival rate or a shorter disease-free survival. Altered expression of HLA-G has been found in both HCV and HBV infection, and some genetic polymorphisms have been associated with altered susceptibility/disease development for these infections, however, whether the biologic role of HLA-G in HCV and HBV infection is beneficial or hazardous, it is not completely clear. In the context of hepatocellular carcinoma, HLA-G has shown a potential diagnostic role, moreover a prognostic value in HCC patients has been also attributed to HLA-G molecules. We revise here the role of HLA-G in hepatotropic HBV/HCV infections and in hepatocellular carcinoma (HCC).

}, keywords = {Carcinoma, Hepatocellular, Female, Genetic Predisposition to Disease, Hepatitis B, Hepatitis C, HLA-G Antigens, Humans, Immune Tolerance, Liver Neoplasms, Polymorphism, Genetic, Pregnancy}, issn = {1879-1166}, doi = {10.1016/j.humimm.2014.09.019}, author = {Catamo, Eulalia and Zupin, Luisa and Crovella, Sergio and Celsi, Fulvio and Segat, Ludovica} } @article {3502, title = {Novel missense mutation in the NOD2 gene in a patient with early onset ulcerative colitis: causal or chance association?}, journal = {Int J Mol Sci}, volume = {15}, year = {2014}, month = {2014}, pages = {3834-41}, abstract = {

Deregulated immune response to gut microflora in genetically predisposed individuals is typical for inflammatory bowel diseases. It is reasonable to assume that genetic association with the disease will be more pronounced in subjects with early onset than adult onset. The nucleotide-binding oligomerization domain containing-2 gene, commonly involved in multifactorial risk of Crohn{\textquoteright}s disease, and interleukin 10 receptor genes, associated with rare forms of early onset inflammatory bowel diseases, were sequenced in an early onset patient. We identified a novel variant in the NOD2 gene (c.2857A > G p.K953E) and two already described missense variants in the IL10RA gene (S159G and G351R). The new NOD2 missense variant was examined in silico with two online bioinformatics tools to predict the potentially deleterious effects of the mutation. Although cumulative effect of these variations in the early onset of the disease can be only hypothesized, we demonstrated that family information and in silico studies can be used to predict association with the disease.

}, keywords = {Age of Onset, Amino Acid Sequence, Base Sequence, Child, Colitis, Ulcerative, Crohn Disease, DNA Mutational Analysis, Genetic Predisposition to Disease, Genotype, Humans, Interleukin-10 Receptor alpha Subunit, Interleukin-10 Receptor beta Subunit, Molecular Sequence Data, Mutation, Missense, Nod2 Signaling Adaptor Protein, Polymorphism, Single Nucleotide, Risk Factors, Sequence Homology, Amino Acid}, issn = {1422-0067}, doi = {10.3390/ijms15033834}, author = {Girardelli, Martina and Vuch, Josef and Tommasini, Alberto and Crovella, Sergio and Bianco, Anna Monica} } @article {3519, title = {Severe neonatal hyperbilirubinemia and UGT1A1 promoter polymorphism.}, journal = {J Pediatr}, volume = {165}, year = {2014}, month = {2014 Jul}, pages = {42-5}, abstract = {

OBJECTIVE: To assess whether UGT1A1 promoter polymorphisms associated with Gilbert Syndrome (GS) occur with a greater frequency in neonates with severe hyperbilirubinemia.

STUDY DESIGN: In a case-control study performed at a single hospital center in Italy, 70 case subjects with severe hyperbilirubinemia (defined as bilirubin level >=20~mg/dL or 340~μmol/L) and 70 controls (bilirubin level <12~mg/dL or 210~μmol/L) were enrolled. Both case and control subjects were full term newborns. Polymerase chain reaction analysis on blood spot was performed to determine the frequency of UGTA1A1 promoter polymorphisms in cases and controls.

RESULTS: No statistical difference in the prevalence of UGTA1A1 gene variants was found between cases and controls (P~=~1). Thirteen infants homozygous for (TA)7 polymorphism associated with GS were in the case group (18.6\%) and 14 in the control group (20.0\%). A heterozygous group was also equally distributed between cases (44.3\%) and controls (42.9\%). No (TA)8 repeat was found in the 2 groups.

CONCLUSIONS: In our study population, GS polymorphism alone does not appear to play a major role in severe neonatal hyperbilirubinemia in neonates without signs of hemolysis.

}, keywords = {Case-Control Studies, Female, Genotype, Gilbert Disease, Glucuronosyltransferase, Humans, Hyperbilirubinemia, Neonatal, Infant, Newborn, Male, Polymerase Chain Reaction, Polymorphism, Genetic, Prevalence, Promoter Regions, Genetic}, issn = {1097-6833}, doi = {10.1016/j.jpeds.2014.03.013}, author = {Travan, Laura and Lega, Sara and Crovella, Sergio and Montico, Marcella and Panontin, Elisa and Demarini, Sergio} } @article {1961, title = {Family history in early-onset inflammatory bowel disease.}, journal = {J Gastroenterol}, volume = {48}, year = {2013}, month = {2013 Jan}, pages = {144}, keywords = {Colitis, Ulcerative, Crohn Disease, Female, Humans, Male}, issn = {1435-5922}, doi = {10.1007/s00535-012-0654-4}, author = {Bianco, Anna Monica and Zanin, Valentina and Monasta, Lorenzo and Martelossi, Stefano and Marcuzzi, Annalisa and Crovella, Sergio} } @article {1916, title = {Asbestos and SV40 in malignant pleural mesothelioma from a hyperendemic area of north-eastern Italy.}, journal = {Tumori}, volume = {98}, year = {2012}, month = {2012 Mar-Apr}, pages = {210-4}, abstract = {

AIMS AND BACKGROUND: Malignant mesothelioma is a fatal cancer of increasing incidence in north-eastern Italy. Together with asbestos, the polyomavirus SV40 was hypothesized to contribute to the onset of malignant mesothelioma. To investigate the putative role of SV40 in the individual susceptibility to asbestos-induced malignant mesothelioma, we conducted a molecular epidemiological study on a series of malignant mesothelioma patients from an area in north-eastern Italy hyperendemic for malignant pleural mesothelioma.

METHODS AND STUDY DESIGN: We collected 63 mesothelioma samples from incidence cases of patients diagnosed with malignant pleural mesothelioma in the period 2009-2010. DNA was extracted from patients{\textquoteright} tissue biopsies using the BioRobot EZ1 Qiagen workstation. SV40 sequence detection and quantification was performed by specific real time PCR. The 74.6\% of the 63 enrolled patients had a history of asbestos exposure. The epithelioid histotype was more prevalent in males (64.0\%) and the mixed in females (61.5\%) who showed significantly higher cancer co-morbidity (46.1\% vs 12\%, P = 0.005). SV40 was detected in 22\% of MM tumors, with a low viral load. In SV40-positive patients, a threefold increased risk of asbestos exposure was observed, more evident in females (OR 4.32) than in males (OR 1.20).

CONCLUSIONS: Our findings indicate that a high prevalence of SV40 was present in malignant mesothelioma incident cases from an area hyperendemic for malignant mesothelioma in north-eastern Italy. Although asbestos is considered the main risk factor in malignant mesothelioma onset, a role for SV40 could be hypothesized.

}, keywords = {Adult, Aged, Asbestos, Carcinogens, Disease Susceptibility, DNA, Viral, Endemic Diseases, Female, Humans, Italy, Male, Mesothelioma, Middle Aged, Pleural Neoplasms, Polyomavirus Infections, Real-Time Polymerase Chain Reaction, Risk Factors, Simian virus 40, Tumor Virus Infections, Viral Load}, issn = {2038-2529}, doi = {10.1700/1088.11931}, author = {Comar, Manola and Zanotta, Nunzia and Pesel, Giuliano and Visconti, Patrizia and Maestri, Iva and Rinaldi, Rosa and Crovella, Sergio and Cortale, Maurizio and De Zotti, Renata and Bovenzi, Massimo} } @article {1904, title = {Clarification of the pleiotropic effects of statins on mevalonate pathway and the feedback regulation of isoprenoids requires more comprehensive investigation.}, journal = {Cell Biochem Funct}, volume = {30}, year = {2012}, month = {2012 Mar}, pages = {176}, keywords = {Carcinoma, Hepatocellular, Enzyme Inhibitors, Humans, Hydroxymethylglutaryl-CoA Reductase Inhibitors, Liver Neoplasms, Simvastatin, Terpenes}, issn = {1099-0844}, doi = {10.1002/cbf.2798}, author = {Bianco, Anna Monica and Zanin, Valentina and Marcuzzi, Annalisa and Crovella, Sergio} } @article {1842, title = {Comments to the editor concerning the paper entitled "Preclinical renal cancer chemopreventive efficacy of geraniol by modulation of multiple molecular pathways" Shiekh Tanveer Ahmad et al.}, journal = {Toxicology}, volume = {293}, year = {2012}, month = {2012 Mar 11}, pages = {123-4}, keywords = {Animals, Antineoplastic Agents, Kidney Neoplasms, Male, Signal Transduction, Terpenes}, issn = {1879-3185}, doi = {10.1016/j.tox.2011.12.008}, author = {Vuch, Josef and Marcuzzi, Annalisa and Zanin, Valentina and Crovella, Sergio} } @article {1864, title = {A common genetic background could explain early-onset Crohn{\textquoteright}s disease.}, journal = {Med Hypotheses}, volume = {78}, year = {2012}, month = {2012 Apr}, pages = {520-2}, abstract = {

Crohn{\textquoteright}s disease (CD) is a multifactorial disease, in which environmental, microbial and genetic factors play important roles. CD is characterized by a chronic granulomatous inflammation by necrotic scarring with aspects of full-thickness wall. In spite of affecting mainly young adults, sometimes, CD can be present in the first year of life (early onset Crohn disease, EOCD) showing an unpredictable course and being often more severe than at older ages. In this paper we propose the hypothesis that EOCD patients should be analyzed using a Mendelian approach with family studies aimed to identify new loci directly involved in the early onset Crohn{\textquoteright}s disease. So we will leave the classic association study approach used until now for the identification of genes responsible for susceptibility to CD and propose linkage family analysis as alternative and powerful tool for the identification of new genetic variants associated with familiar cases of EOCD.

}, keywords = {Crohn Disease, Genetic Linkage, Genetic Predisposition to Disease, Humans, Models, Biological}, issn = {1532-2777}, doi = {10.1016/j.mehy.2012.01.023}, author = {Bianco, Anna Monica and Zanin, Valentina and Girardelli, Martina and Magnolato, Andrea and Martelossi, Stefano and Martellossi, Stefano and Tommasini, Alberto and Marcuzzi, Annalisa and Crovella, Sergio} } @article {1898, title = {DEFB1 gene 5{\textquoteright} untranslated region (UTR) polymorphisms in inflammatory bowel diseases.}, journal = {Clinics (Sao Paulo)}, volume = {67}, year = {2012}, month = {2012}, pages = {395-8}, keywords = {5{\textquoteright} Untranslated Regions, Adult, Antimicrobial Cationic Peptides, beta-Defensins, Case-Control Studies, Colitis, Ulcerative, Crohn Disease, Female, Genetic Predisposition to Disease, Haplotypes, Humans, Inflammatory Bowel Diseases, Male, Polymorphism, Genetic, Polymorphism, Single Nucleotide}, issn = {1980-5322}, author = {Zanin, Valentina and Segat, Ludovica and Bianco, Anna Monica and Padovan, Lara and Tavares, Nathalia de Alencar Cunha and Crovella, Sergio} } @article {1955, title = {The effect of clodronate on a mevalonate kinase deficiency cellular model.}, journal = {Inflamm Res}, volume = {61}, year = {2012}, month = {2012 Dec}, pages = {1363-7}, abstract = {

BACKGROUND: A potential anti-inflammatory effect of clodronate--an aminobisphosphonate--was described to antagonize the pro-inflammatory effects of the block in the mevalonate pathway, the main feature of a rare auto-inflammatory disease called mevalonate kinase deficiency (MKD).

OBJECTIVE: In this study we evaluated the potential anti-inflammatory effect of clodronate in MKD--a still orphan drug pediatric disease.

METHODS: We studied some biological parameters, nitric oxide production using Griess reagents and programmed cell death by flow cytometry, as common inflammatory parameters in MKD, in the presence of different doses of clodronate (1, 10 and 100 μM).

RESULTS: In our cellular model and in monocytes from patients with MKD, clodronate induced an increase in programed cell death and nitric oxide production in comparison with non-treated cells.

CONCLUSION: Our findings suggest that clodronate does not have an anti-inflammatory effect as previously reported but that it increases the epiphenomena of this pediatric disease.

}, keywords = {Adolescent, Adult, Alendronate, Animals, Anti-Inflammatory Agents, Apoptosis, Cell Line, Cells, Cultured, Child, Clodronic Acid, Female, Humans, Inflammation, Lipopolysaccharides, Male, Mevalonate Kinase Deficiency, Mice, Models, Biological, Monocytes, Nitric Oxide, Young Adult}, issn = {1420-908X}, doi = {10.1007/s00011-012-0537-4}, author = {Zanin, Valentina and Marcuzzi, Annalisa and Piscianz, Elisa and Vuch, Josef and Bianco, Anna Monica and Monasta, Lorenzo and Decorti, Giuliana and Crovella, Sergio} } @article {1825, title = {HIV-1 induces NALP3-inflammasome expression and interleukin-1β secretion in dendritic cells from healthy individuals but not from HIV-positive patients.}, journal = {AIDS}, volume = {26}, year = {2012}, month = {2012 Jan 2}, pages = {11-8}, abstract = {

OBJECTIVE: NALP3-inflammasome is an innate mechanism, alternative to type-1 interferon, which is able to recognize nucleic acids and viruses in the cytoplasm and to induce pro-inflammatory response. Here, we hypothesized the involvement of inflammasome in the early defense against HIV-1 and in the full maturation of dendritic cells: for this, we evaluated the response of dendritic cells pulsed with HIV-1 in terms of inflammasome activation in healthy donors. Moreover, inflammasome response to HIV was evaluated in HIV-infected individuals.

DESIGN AND METHODS: Monocyte-derived dendritic cells isolated from 20 healthy individuals (HC-DC) and 20 HIV-1-infected patients (HIV-DC) were pulsed with alditrithiol-2-inactivated HIV-1. We then analyzed inflammasome genes expression and interleukin-1β (IL-1β) secretion.

RESULTS: In HC-DC, HIV-1 induced higher NLRP3/NALP3 mRNA expression compared with other inflammasome genes such as NALP1/NLRP1 or IPAF/NLRC4 (P < 0.001). This augmented expression was accompanied by CASP1-increased and IL1B-increased mRNA levels and by a significant increment of IL-1β secretion (P < 0.05). Otherwise, HIV-1 failed to activate inflammasome and cytokine production in HIV-DC. HIV-DC showed an increased NLRP3/NALP3 basal expression, suggesting a chronic inflammatory profile of patients{\textquoteright} immune cells.

CONCLUSION: HIV-1 was able to induce a NALP3-inflammasome response in healthy individuals, indicating that this inflammasome could play a role in the first steps of HIV-1 infection; the consequent inflammatory process may be important for directing host immune response against the virus and/or disease progression. HIV-DC seemed to be chronically activated, but unresponsive against pathogens. Our findings could be of interest considering the ongoing research about dendritic cell manipulation and therapeutic strategies for AIDS involving dendritic cell-based immune-vaccines.

}, keywords = {Acquired Immunodeficiency Syndrome, Adult, Brazil, Carrier Proteins, Caspase 1, Cells, Cultured, Dendritic Cells, DNA, Viral, Female, HIV-1, Humans, Immunity, Innate, Inflammasomes, Interleukin-1beta, Male, Tumor Necrosis Factor-alpha}, issn = {1473-5571}, doi = {10.1097/QAD.0b013e32834d697f}, author = {Pontillo, Alessandra and Silva, Lais T and Oshiro, Telma M and Finazzo, Claudia and Crovella, Sergio and Duarte, Alberto J S} } @article {1844, title = {Inflammation profile of four early onset Crohn patients.}, journal = {Gene}, volume = {493}, year = {2012}, month = {2012 Feb 10}, pages = {282-5}, abstract = {

Crohn disease (CD) is a multifactorial disorder affecting mainly young adults. Sometimes, however, it can present in the first year of life (Early onset Crohn disease (EOCD)) showing an unpredictable course and can often be more severe than at older ages. Some cases have been associated to an underlying primary immunodeficiency such as IL10R deficiency. We studied the functional response to IL-10 and the genotype of IL-10 receptor in four patients with early onset crohn-like colitis. We found an IL10R variant, which may be associated with a decreased response to the cytokine in one patient. Further studies to determine its pathogenic effect should be performed. In addition IL-10 mediated inhibition of LPS-induced TNFα expression was measured in patient{\textquoteright}s monocytes.

}, keywords = {Crohn Disease, Cytokines, Humans, Inflammation, Monocytes, Nod2 Signaling Adaptor Protein, Polymorphism, Genetic, Receptors, Interleukin-10, Tumor Necrosis Factor-alpha}, issn = {1879-0038}, doi = {10.1016/j.gene.2011.11.043}, author = {Marcuzzi, Annalisa and Girardelli, Martina and Bianco, Anna Monica and Martelossi, Stefano and Magnolato, Andrea and Tommasini, Alberto and Crovella, Sergio} } @article {1943, title = {Lovastatin-induced apoptosis is modulated by geranylgeraniol in a neuroblastoma cell line.}, journal = {Int J Dev Neurosci}, volume = {30}, year = {2012}, month = {2012 Oct}, pages = {451-6}, abstract = {

Mevalonic aciduria (MA), the most severe form of mevalonate kinase deficiency (MKD), is still an orphan drug disease and the pathogenetic mechanisms underlying neuronal dysfunction is still poorly understood. In our study we have investigated the apoptotic mechanism mediated by the exposure of the cultured neuroblastoma cell line, SH-SY5Y, to lovastatin in absence or in presence of the isoprenoid, geranylgeraniol, with the aim of unraveling the pathogenesis of MA. Lovastatin, blocks the mevalonate pathway inhibiting the 3-hydroxy-3-methylglutaryl-CoA reductase (HMG-CR), an enzyme of the mevalonate pathway upstream the mevalonate kinase enzyme, reproducing biochemical features similar to those found in MKD. We demonstrate that apoptosis in neuronal lovastatin treated-cells is induced by the mitochondrial pathway, with caspase-9 as the initiator and caspase-3 as the effector caspase. The presence of geranylgeraniol modulates both the caspase-9 and caspase-3 activity in a dose-dependent way, confirming that this isoprenoid enters the mevalonate pathway, is metabolized and finally is able to by-pass the statin biochemical block reconstituting the mevalonate pathway. According to our findings, it should not be the time course adopted that modulates the apoptotic response but rather the isoprenoid itself. Being aware that our results have been obtained using a biochemical model of MKD, and not cells from patients with the disease, we believe our findings increase the knowledge of MA pathogenesis, and may possibly contribute to the development of novel therapeutic strategies.

}, keywords = {Analysis of Variance, Apoptosis, Caspases, Cell Line, Tumor, Diterpenes, Dose-Response Relationship, Drug, Drug Interactions, Humans, Hydroxymethylglutaryl-CoA Reductase Inhibitors, Lovastatin, Neuroblastoma, Time Factors}, issn = {1873-474X}, doi = {10.1016/j.ijdevneu.2012.06.002}, author = {Marcuzzi, Annalisa and Zanin, Valentina and Piscianz, Elisa and Tricarico, Paola Maura and Vuch, Josef and Girardelli, Martina and Monasta, Lorenzo and Bianco, Anna Monica and Crovella, Sergio} } @article {1928, title = {Mevalonate kinase deficiency: disclosing the role of mevalonate pathway modulation in inflammation.}, journal = {Curr Pharm Des}, volume = {18}, year = {2012}, month = {2012}, pages = {5746-52}, abstract = {

Inflammation is a highly regulated process involved both in the response to pathogens as well as in tissue homeostasis. In recent years, a complex network of proteins in charge of inflammation control has been revealed by the study of hereditary periodic fever syndromes. Most of these proteins belong to a few families and share the capability of sensing pathogen-associated and damageassociated molecular patterns. By interacting with each other, these proteins participate in the assembly of molecular platforms, called inflammasomes, which ultimately lead to the activation of cytokines, to the transcription of inflammatory genes or to the induction of cell apoptosis. Among hereditary periodic fever syndromes, mevalonate kinase deficiency (MKD) is the sole in which the phenotype did not directly associate with a deficiency of these proteins, but with a metabolic defect of the mevalonate pathway, highlighting the importance of this metabolic pathway in the inflammation control. Noteworthy, drugs acting on this pathway can greatly influence the inflammatory response. The modulation of inflammation by mevalonate pathway is of interest, since it may involve mechanisms not directly referable to inflammasomes. MKD provides a model to study these mechanisms and possibly to develop new classes of anti-inflammatory drugs.

}, keywords = {Animals, Anti-Inflammatory Agents, Apoptosis, Cytokines, Drug Design, Hereditary Autoinflammatory Diseases, Humans, Inflammasomes, Inflammation, Mevalonate Kinase Deficiency, Mevalonic Acid}, issn = {1873-4286}, author = {Marcuzzi, Annalisa and Crovella, Sergio and Monasta, Lorenzo and Vecchi Brumatti, Liza and Gattorno, Marco and Frenkel, Joost} } @article {1731, title = {NALP1/NLRP1 genetic variants are associated with Alzheimer disease.}, journal = {Alzheimer Dis Assoc Disord}, volume = {26}, year = {2012}, month = {2012 Jul-Sep}, pages = {277-81}, abstract = {

Alzheimer disease (AD) is a complex neurodegenerative disease. Genetic and molecular studies have confirmed that in the human brain, amyloid-β fibrils can induce, through the activation of NALP1 inflammosome, inflammatory and apoptotic responses involved in the pathogenesis of AD. Considering that AD pathogenesis is multifactorial, we hypothesized that NALP1/NLRP1 could be a susceptibility gene involved in the devolvement of the disease. The possible association between 9 selected polymorphisms in the NALP1/NLRP1 gene and AD was evaluated by comparing their frequency distribution in an Italian cohort of AD patients (AD, n = 276) and in a group of Italian sex-matched and age-matched healthy controls without dementia (HC, n = 266). Our study, evidences the association of 4 nonsynonymous polymorphisms in the NLRP1 gene (rs2137722, rs34733791, rs11657747, rs11651595) with AD. The major alleles of all 4 single nucleotide polymorphisms and the corresponding homozygote genotypes were more frequent in AD patients than in healthy controls, suggesting an association of these variants in the predisposition versus the development of the disease. These findings seem to support the previously reported role of NALP1 in neuronal damage, and provide evidence of an association between single nucleotide variations in the NLRP1 gene and AD.

}, keywords = {Adaptor Proteins, Signal Transducing, Aged, 80 and over, Alzheimer Disease, Apoptosis Regulatory Proteins, Female, Genetic Predisposition to Disease, Genotype, Humans, Italy, Male, Polymerase Chain Reaction, Polymorphism, Single Nucleotide}, issn = {1546-4156}, doi = {10.1097/WAD.0b013e318231a8ac}, author = {Pontillo, Alessandra and Catamo, Eulalia and Arosio, Beatrice and Mari, Daniela and Crovella, Sergio} } @article {1913, title = {New insights in the sugarcane transcriptome responding to drought stress as revealed by superSAGE.}, journal = {ScientificWorldJournal}, volume = {2012}, year = {2012}, month = {2012}, pages = {821062}, abstract = {

In the scope of the present work, four SuperSAGE libraries have been generated, using bulked root tissues from four drought-tolerant accessions as compared with four bulked sensitive genotypes, aiming to generate a panel of differentially expressed stress-responsive genes. Both groups were submitted to 24 hours of water deficit stress. The SuperSAGE libraries produced 8,787,315 tags (26 bp) that, after exclusion of singlets, allowed the identification of 205,975 unitags. Most relevant BlastN matches comprised 567,420 tags, regarding 75,404 unitags with 164,860 different ESTs. To optimize the annotation efficiency, the Gene Ontology (GO) categorization was carried out for 186,191 ESTs (BlastN against Uniprot-SwissProt), permitting the categorization of 118,208 ESTs (63.5\%). In an attempt to elect a group of the best tags to be validated by RTqPCR, the GO categorization of the tag-related ESTs allowed the in silico identification of 213 upregulated unitags responding basically to abiotic stresses, from which 145 presented no hits after BlastN analysis, probably concerning new genes still uncovered in previous studies. The present report analyzes the sugarcane transcriptome under drought stress, using a combination of high-throughput transcriptome profiling by SuperSAGE with the Solexa sequencing technology, allowing the identification of potential target genes during the stress response.

}, keywords = {Droughts, Gene Expression Profiling, Heat-Shock Response, Plant Proteins, Saccharum, Transcriptome}, issn = {1537-744X}, doi = {10.1100/2012/821062}, author = {Kido, {\'E}derson Akio and Ferreira Neto, Jos{\'e} Ribamar Costa and Silva, Roberta Lane de Oliveira and Pandolfi, Valesca and Guimar{\~a}es, Ana Carolina Ribeiro and Veiga, Daniela Truffi and Chabregas, Sabrina Moutinho and Crovella, Sergio and Benko-Iseppon, Ana Maria} } @article {1971, title = {NLRP1 polymorphisms in patients with asbestos-associated mesothelioma.}, journal = {Infect Agent Cancer}, volume = {7}, year = {2012}, month = {2012}, pages = {25}, abstract = {

UNLABELLED:

BACKGROUND: An increasing incidence of malignant mesothelioma (MM) cases in patients with low levels of asbestos exposure suggests the interference of alternative cofactors. SV40 infection was detected, as co-morbidity factor, only in 22\% of asbestos-MM patients from a North-Eastern Italy area. An additional mechanism of injury related to asbestos exposure in MM development has been recently associated to inflammatory responses, principally driven by interleukin (IL)-1 beta ({\ss}) activated within the inflammasome complex.NLRP3 inflammosome has been described as the intracellular sensor for asbestos able to induce inflammasome activation and IL-1{\ss} secretion while NLRP1 is expressed in lung epithelial cells and alveolar macrophages and contributes to the immune response and to survival/apoptosis balance. This study proposes to evaluate the impact of known NLRP3 and NLRP1 polymorphisms in the individual susceptibility to asbestos-induced mesothelioma in subjects from a hyperendemic area for MM.

METHODS: 134 Italian patients with diagnosis of mesothelioma due (MMAE, n=69) or not (MMAF, n=65) to asbestos, 256 healthy Italian blood donors and 101 Italian healthy subjects exposed to asbestos (HCAE) were genotyped for NLRP1 (rs2670660 and rs12150220) and NLRP3 (rs35829419 and rs10754558) polymorphisms.

RESULTS: While NLRP3 SNPs were not associated to mesothelioma, the NLRP1 rs12150220 allele T was significantly more frequent in MMAE (0.55) than in HCAE (0.41) (p=0.011; OR=1.79) suggesting a predisponent effect of this allele on the development of mesothelioma. This effect was amplified when the NLRP1 rs2670660 allele was combined with the NLRP1 rs12150220 allele (p=0.004; OR=0.52).

CONCLUSION: Although NLRP3 SNPs was not involved in mesothelioma predisposition, these data proposed NLRP1 as a novel factor possibly involved in the development of mesothelioma.

}, issn = {1750-9378}, doi = {10.1186/1750-9378-7-25}, author = {Girardelli, Martina and Maestri, Iva and Rinaldi, Rosa R and Tognon, Mauro and Boldorini, Renzo and Bovenzi, Massimo and Crovella, Sergio and Comar, Manola} } @article {1871, title = {Polimorphisms in inflammasome genes are involved in the predisposition to systemic lupus erythematosus.}, journal = {Autoimmunity}, volume = {45}, year = {2012}, month = {2012 Jun}, pages = {271-8}, abstract = {

Recent findings provide evidence of inflammasome critical role in the predisposition to autoimmune disorders. The involvement of inflammasome in the pathogenesis of systemic lupus erythematosus (SLE) has been hypothesized even if no significant association within inflammasome genes mutations or polymorphisms and lupus has been reported yet. We analyzed 14 single nucleotide polymorphisms (SNPs) within 7 inflammasome genes (NLRP1, NLRP3, NLRC4, AIM2, CARD8, CASP1, IL1B) in 144 patients affected by systemic lupus erythematosus and in 158 healthy controls from Southern Brazilian (state of S{\~a}o Paulo) with the aim of disclosing the possible role of inflammasome genes in the susceptibility of SLE. Our results demonstrated that NLRP1 rs2670660 SNP and the NLRP1 rs12150220-rs2670660 A-G haplotype were associated with SLE in our study population, and in particular with the development of nephritis, rash and arthritis. These findings are concordant with previously reported association of NLRP1 with vitiligo and type-1 diabetes underlining once more the involvement of NALP1 inflammasome in the pathogenesis of autoimmune disorders.

}, keywords = {Adaptor Proteins, Signal Transducing, Adult, Alleles, Apoptosis Regulatory Proteins, Brazil, Female, Genetic Predisposition to Disease, Genotype, Haplotypes, Humans, Inflammasomes, Lupus Erythematosus, Systemic, Male, Middle Aged, Polymorphism, Single Nucleotide}, issn = {1607-842X}, doi = {10.3109/08916934.2011.637532}, author = {Pontillo, Alessandra and Girardelli, Martina and Kamada, Anselmo J and Pancotto, Joao A T and Donadi, Eduardo A and Crovella, Sergio and Sandrin-Garcia, Paula} } @article {1963, title = {Polymorphisms in DC-SIGN and L-SIGN genes are associated with HIV-1 vertical transmission in a Northeastern Brazilian population.}, journal = {Hum Immunol}, volume = {73}, year = {2012}, month = {2012 Nov}, pages = {1159-65}, abstract = {

DC-SIGN and L-SIGN are receptors expressed on specialized macrophages in decidua, (Hofbauer and placental capillary endothelial cells), known to interact with several pathogens, including HIV-1. To disclose the possible involvement of these molecules in the susceptibility to HIV vertical transmission, we analyzed DC-SIGN and L-SIGN gene single nucleotide polymorphisms (SNPs) in 192 HIV-1 positive children and 58 HIV-1 negative children all born to HIV-1 positive mothers, as well as 96 healthy uninfected children not exposed to HIV-1, all from Northeast Brazil. The frequency of three SNPs in the DC-SIGN promoter (-139G>A, -201G>T and -336A>G) were significantly different when comparing HIV positive children with HIV-1 exposed uninfected children, indicating an association with susceptibility to HIV-1 vertical transmission. This genetic association suggests that DC-SIGN molecule may play a role in susceptibility to HIV-1 infection through vertical transmission.

}, keywords = {Alleles, Brazil, Cell Adhesion Molecules, Child, Child, Preschool, Exons, Female, Gene Frequency, Genotype, HIV Infections, HIV-1, Humans, Infectious Disease Transmission, Vertical, Lectins, C-Type, Male, Polymorphism, Single Nucleotide, Promoter Regions, Genetic, Receptors, Cell Surface, Tandem Repeat Sequences}, issn = {1879-1166}, doi = {10.1016/j.humimm.2012.07.338}, author = {da Silva, Ronaldo Celerino and Segat, Ludovica and Zanin, Valentina and Arraes, Luiz Claudio and Crovella, Sergio} } @article {1905, title = {Polymorphisms in inflammasome{\textquoteright} genes and susceptibility to HIV-1 infection.}, journal = {J Acquir Immune Defic Syndr}, volume = {59}, year = {2012}, month = {2012 Feb 1}, pages = {121-5}, abstract = {

The involvement of inflammasome genes in the susceptibility to HIV-1 infection was investigated. Twelve single nucleotide polymorphisms within NLRP1, NLRP3, NLRC4, CARD8, CASP1, and IL1B genes were analyzed in 150 HIV-1-infected Brazilian subjects and 158 healthy controls. The 2 polymorphisms rs10754558 in NLRP3 and rs1143634 in IL1B were significantly associated to the HIV-1 infection. These findings supported the previously hypothesized involvement of NALP3-inflammasome in HIV-1 pathogenesis, underlining once more the key role of inflammation and innate immunity in the susceptibility to HIV-1 infection.

}, keywords = {Adaptor Proteins, Signal Transducing, Adult, Apoptosis Regulatory Proteins, Brazil, Calcium-Binding Proteins, CARD Signaling Adaptor Proteins, Carrier Proteins, Caspase 1, Female, Gene Frequency, Genetic Predisposition to Disease, Genotype, HIV Infections, HIV-1, Humans, Inflammasomes, Interleukin-1beta, Intracellular Signaling Peptides and Proteins, Male, Middle Aged, Neoplasm Proteins, Polymorphism, Single Nucleotide}, issn = {1944-7884}, doi = {10.1097/QAI.0b013e3182392ebe}, author = {Pontillo, Alessandra and Oshiro, Telma M and Girardelli, Martina and Kamada, Anselmo J and Crovella, Sergio and Duarte, Alberto J S} } @article {1877, title = {A real-time polymerase chain reaction-based protocol for low/medium-throughput Y-chromosome microdeletions analysis.}, journal = {Genet Test Mol Biomarkers}, volume = {16}, year = {2012}, month = {2012 Dec}, pages = {1349-55}, abstract = {

PURPOSE: We describe a real-time polymerase chain reaction (PCR) protocol based on the fluorescent molecule SYBR Green chemistry, for a low- to medium-throughput analysis of Y-chromosome microdeletions, optimized according to the European guidelines and aimed at making the protocol faster, avoiding post-PCR processing, and simplifying the results interpretation.

METHODS: We screened 156 men from the Assisted Reproduction Unit, Department of Obstetrics and Gynecology, Institute for Maternal and Child Health IRCCS Burlo Garofolo (Trieste, Italy), 150 not presenting Y-chromosome microdeletion, and 6 with microdeletions in different azoospermic factor (AZF) regions. For each sample, the Zinc finger Y-chromosomal protein (ZFY), sex-determining region Y (SRY), sY84, sY86, sY127, sY134, sY254, and sY255 loci were analyzed by performing one reaction for each locus.

RESULTS: AZF microdeletions were successfully detected in six individuals, confirming the results obtained with commercial kits.

CONCLUSION: Our real-time PCR protocol proved to be a rapid, safe, and relatively cheap method that was suitable for a low- to medium-throughput diagnosis of Y-chromosome microdeletion, which allows an analysis of approximately 10 samples (with the addition of positive and negative controls) in a 96-well plate format, or approximately 46 samples in a 384-well plate for all markers simultaneously, in less than 2 h without the need of post-PCR manipulation.

}, keywords = {Azoospermia, Chromosome Deletion, Chromosomes, Human, Y, Female, Humans, Kruppel-Like Transcription Factors, Male, Real-Time Polymerase Chain Reaction, Sex Chromosome Aberrations, Sex Chromosome Disorders of Sex Development}, issn = {1945-0257}, doi = {10.1089/gtmb.2012.0220}, author = {Segat, Ludovica and Padovan, Lara and Doc, Darja and Petix, Vincenzo and Morgutti, Marcello and Crovella, Sergio and Ricci, Giuseppe} } @article {1914, title = {Serum amyloid A and cholesterol: a pivotal role on inflammation.}, journal = {Amyloid}, volume = {19}, year = {2012}, month = {2012 Sep}, pages = {163-4; author reply 165-6}, keywords = {Animals, Humans, Serum Amyloid A Protein}, issn = {1744-2818}, doi = {10.3109/13506129.2012.689266}, author = {Tricarico, Paola Maura and Marcuzzi, Annalisa and Zanin, Valentina and Kleiner, Giulio and Bianco, Anna Monica and Crovella, Sergio} } @article {1909, title = {Specific protein profile in cerebrospinal fluid from HIV-1-positive cART-treated patients affected by neurological disorders.}, journal = {J Neurovirol}, volume = {18}, year = {2012}, month = {2012 Oct}, pages = {416-22}, abstract = {

Cytokines/chemokines are involved in the immune response of infections, including HIV-1. We defined the profile of 48 cytokines/chemokines in cerebrospinal fluid from 18 cART patients with chronic HIV-1 infection by Luminex technology. Nine patients were affected with leukoencephalopathies: five with John Cunningham virus (JCV) + progressive multifocal leukoencephalopathy (PML) and four with JCV-not determined leukoencephalopathy (NDLE). In addition, nine HIV-1-positive patients with no neurological signs (NND) and five HIV-1-negative patients affected with acute disseminated encephalomyelitis (ADEM) were enrolled. Ten cytokines (IL-15, IL-3, IL-16, IL-18, CTACK, GRO1, SCF, MCP-1, MIF, SDF) were highly expressed in HIV-1-positive patients while IL-1Ra and IL-17 were present at a lower level. In addition, the levels of IL-17, IL-9, FGF-basic, MIP-1β, and MCP-1 were significantly higher (p < 0.05) in patients with neurological diseases (PML, NDLE, ADEM) with respect to NND. Focusing the attention to the cytokine profile in JCV + PML patients with respect to JCV-NDLE patients, only TNF-β was significantly downregulated (p < 0.05) in JCV + PML patients. This pilot study emphasized the role of immunoregulation in HIV-1-related neurological disorders during cART treatment.

}, keywords = {Adult, Aged, Anti-HIV Agents, Cytokines, Encephalomyelitis, Acute Disseminated, Female, HIV Infections, HIV-1, Humans, Leukoencephalopathy, Progressive Multifocal, Male, Middle Aged, Pilot Projects}, issn = {1538-2443}, doi = {10.1007/s13365-012-0109-y}, author = {Zanin, Valentina and Delbue, Serena and Marcuzzi, Annalisa and Tavazzi, Eleonora and Del Savio, Rossella and Crovella, Sergio and Marchioni, Enrico and Ferrante, Pasquale and Comar, Manola} } @article {1939, title = {TRAIL administration down-modulated the acute systemic inflammatory response induced in a mouse model by muramyldipeptide or lipopolysaccharide.}, journal = {Cytokine}, volume = {60}, year = {2012}, month = {2012 Oct}, pages = {43-6}, abstract = {

The potent inducer of apoptosis TRAIL/Apo2 ligand is now under considerations in clinical trials for the treatment of different types of cancer. Since the natural history of cancer is often characterized by microbial infections, we have investigated the effect of recombinant human TRAIL in a mouse model of systemic acute inflammation of microbial origin represented by BALB/c mice treated with either bacterial muramyldipeptide (MDP) or lipopolysaccharide (LPS). When administered intraperitoneally (i.p.), these inflammatory bacterial compounds triggered a severe systemic inflammatory response within 2h, represented by body temperature elevation, increase of circulating serum amyloid-A (SAA) and of the number of leukocytes in the peritoneal cavity. Moreover, both MDP and LPS induced a significant elevation of the circulating levels of several inflammatory cytokines and chemokines. Noteworthy, pre-treatment with recombinant human TRAIL 48 and 72 h before administration of either MDP or LPS, significantly counteracted all acute inflammatory responses, including the elevation of key pro-inflammatory cytokines/chemokines such as IL-1α, IL-6, G-CSF, MCP-1. These data demonstrate for the first time that TRAIL has a potent anti-inflammatory activity, which might be beneficial for the anti-tumoral activity of TRAIL.

}, keywords = {Acetylmuramyl-Alanyl-Isoglutamine, Acute Disease, Animals, Chemokine CCL2, Cytokines, Disease Models, Animal, Down-Regulation, Granulocyte Colony-Stimulating Factor, Humans, Immunoassay, Inflammation, Inflammation Mediators, Interleukin-1alpha, Interleukin-6, Lipopolysaccharides, Male, Mice, Mice, Inbred BALB C, Recombinant Proteins, Serum Amyloid A Protein, TNF-Related Apoptosis-Inducing Ligand}, issn = {1096-0023}, doi = {10.1016/j.cyto.2012.06.001}, author = {Marcuzzi, Annalisa and Secchiero, Paola and Crovella, Sergio and Zauli, Giorgio} } @article {1600, title = {Comments on {\textquoteright}{\textquoteright}Geranylgeraniol--a new potential therapeutic approach to bisphosphonate associated osteonecrosis of the jaw" by Ziebart T et al. (2011).}, journal = {Oral Oncol}, volume = {47}, year = {2011}, month = {2011 May}, pages = {436-7; author reply 438}, keywords = {Bone Density Conservation Agents, Diphosphonates, Diterpenes, Humans, Jaw Diseases, Osteonecrosis}, issn = {1879-0593}, doi = {10.1016/j.oraloncology.2011.02.017}, author = {Marcuzzi, Annalisa and Zanin, Valentina and Crovella, Sergio and Pontillo, Alessandra} } @article {1725, title = {The farnesyltransferase inhibitors tipifarnib and lonafarnib inhibit cytokines secretion in a cellular model of mevalonate kinase deficiency.}, journal = {Pediatr Res}, volume = {70}, year = {2011}, month = {2011 Jul}, pages = {78-82}, abstract = {

The shortage of geranylgeranyl-pyrophosphate (GGPP) was associated to an increased IL-1β release in the autoinflammatory syndrome mevalonate kinase deficiency (MKD), a rare inherited disease that has no specific therapy. Farnesyltransferase inhibitors (FTIs) act at the end of mevalonate pathway. Two FTIs, tipifarnib (Tip) and lonafarnib (Lon), were therefore evaluated as possible therapeutical choices for the treatment of MKD. FTIs could lead to a redirection of the limited available number of mevalonate intermediates preferentially to GGPP synthesis, eventually preventing the uncontrolled inflammatory response. The effect of Tip and Lon on intracellular cholesterol level (ICL) and on proinflammatory cytokines secretion was evaluated in a cellular model of MKD, chemically obtained treating RAW 264.7 cells with lovastatin (Lova) and alendronate (Ald). The combination of FTIs with the isoprenoid geraniol (GOH) was also tested both in this model and in monocytes isolated from MKD patients. Tip and Lon proved to revert the ICL lowering and to significantly reduce the lipopolysaccharide-induced cytokines secretion in Ald-Lova -RAW 264.7 cells. This anti-inflammatory effect was amplified combining the use of GOH with FTIs. The effect of GOH and Tip was successfully replicated in MKD patients{\textquoteright} monocytes. Tip and Lon showed a dramatic anti-inflammatory effect in monocytes where mevalonate pathway was chemically or genetically impaired.

}, keywords = {Alendronate, Animals, Anti-Inflammatory Agents, Cell Line, Child, Child, Preschool, Cholesterol, Cytokines, Dose-Response Relationship, Drug, Enzyme Inhibitors, Farnesyltranstransferase, Humans, Inflammation Mediators, Lovastatin, Male, Mevalonate Kinase Deficiency, Mice, Monocytes, Phosphotransferases (Alcohol Group Acceptor), Piperidines, Polyenes, Polyisoprenyl Phosphates, Polyunsaturated Alkamides, Pyridines, Quinolones, Terpenes}, issn = {1530-0447}, doi = {10.1038/pr.2011.303}, author = {Marcuzzi, Annalisa and De Leo, Luigina and Decorti, Giuliana and Crovella, Sergio and Tommasini, Alberto and Pontillo, Alessandra} } @article {1747, title = {Frequency distribution of HLA DQ2 and DQ8 in celiac patients and first-degree relatives in Recife, northeastern Brazil.}, journal = {Clinics (Sao Paulo)}, volume = {66}, year = {2011}, month = {2011}, pages = {227-31}, abstract = {

AIMS: The aim of this study was to evaluate the frequencies of the HLA genotypes DQ2 and DQ8 and the alleles A1*05, A1*0201, B1*0201 and B1*0302 in individuals with celiac disease in Recife, northeastern Brazil.

METHODS: HLA DQ2 and DQ8 genotyping was performed for 73 individuals with celiac disease and 126 first-degree relatives with negative transglutaminase serology. The alleles DQA1*05, DQA1*0201, DQB1*02 and DQB1*0302 were identified by sequencing using specific primers and the EU-DQ kit from the Eurospital Laboratory, Trieste, Italy and double-checked by the All Set SPP kit (Dynal).

RESULTS: Among the 73 cases, 50 (68.5\%) had the genotype DQ2, 13 (17.8\%) had DQ8, 5 (6.8\%) had DQ2 and DQ8, and 5 did not have any of these genotypes. Among the 5 negative individuals, four had the B1*02 allele and one did not have any of the alleles studied. B1*02 was the most frequent allele in both groups (94\% in the patients and 89\% in the control relatives).

CONCLUSIONS: In this study, celiac disease was associated with the genotypes DQ2 and DQ8. DQ2 predominated, but the distribution of the frequencies was different from what has been found in European populations and was closer to what has been found in the Americas. The high frequencies of the HLA genotypes DQ2 and DQ8 that were found in first-degree relatives would make it difficult to use these HLA genotypes for routine diagnosis of celiac disease in this group.

}, keywords = {Adolescent, Adult, Brazil, Celiac Disease, Chi-Square Distribution, Child, Child, Preschool, Cross-Sectional Studies, Europe, Family, Female, Gene Frequency, Genetic Predisposition to Disease, HLA-DQ Antigens, Humans, Infant, Male, Middle Aged, Young Adult}, issn = {1980-5322}, author = {Castro-Antunes, Margarida Maria and Crovella, Sergio and Brand{\~a}o, Lucas Andr{\'e} Cavalcanti and Guimar{\~a}es, Rafael Lima and Motta, Maria Eug{\^e}nia Farias Almeida and Silva, Giselia Alves Pontes da} } @article {1821, title = {Frequency of HLA B*5701 allele carriers in abacavir treated-HIV infected patients and controls from northeastern Brazil.}, journal = {Clinics (Sao Paulo)}, volume = {66}, year = {2011}, month = {2011}, pages = {1485-8}, keywords = {Adolescent, Adult, Anti-HIV Agents, Brazil, Case-Control Studies, Dideoxynucleosides, Drug Hypersensitivity, Female, Gene Frequency, Genotype, HIV Infections, HLA-B Antigens, Humans, Male, Middle Aged, Real-Time Polymerase Chain Reaction, Young Adult}, issn = {1980-5322}, author = {Crovella, Sergio and Biller, Lara and Santos, Sergio and Salustiano, Ana and Brand{\~a}o, Lucas and Guimar{\~a}es, Rafael and Segat, Ludovica and Lima Filho, Jose Luiz de and Arraes, Luiz Claudio} } @article {1672, title = {Geraniol rescues inflammation in cellular and animal models of mevalonate kinase deficiency.}, journal = {In Vivo}, volume = {25}, year = {2011}, month = {2011 Jan-Feb}, pages = {87-92}, abstract = {

BACKGROUND/AIM: The inhibition of the mevalonate pathway through genetic defects such as mevalonate kinase deficiency (MKD) or pharmacological drugs such as aminobisphosphonates causes a shortage of intermediate compounds, in particular geranylgeranyl-pyrophosphate (GGPP), which is associated with the consequent augmented IL-1β release in monocytes. Considering that, due to its biochemical structure, isoprenoid geraniol enters the mevalonate pathway and may revert the genetic or pharmacological inhibition, the present study tested isoprenoid geraniol in cellular and animal MKD models obtained through the use of aminobisphosphonate pamidronate.

MATERIALS AND METHODS: The effect of natural isoprenoid geraniol on bacterial induced-inflammation was evaluated in a monocytic cell line (Raw 264.7) and in Balb/c mice treated with pamidronate.

RESULTS: Geraniol diminished the levels of inflammatory markers induced by pamidronate stimuli in vitro and in vivo.

CONCLUSION: Geraniol may be proposed as a novel therapeutic approach for the orphan disease MKD, and may also be considered for the evaluation of possible inflammatory side-effects of aminobisphosphonates.

}, keywords = {Animals, Anti-Inflammatory Agents, Cell Line, Diphosphonates, Disease Models, Animal, Inflammation, Lipopolysaccharides, Mevalonate Kinase Deficiency, Mice, Mice, Inbred BALB C, Monocytes, Nitric Oxide, Terpenes}, issn = {1791-7549}, author = {Marcuzzi, Annalisa and Crovella, Sergio and Pontillo, Alessandra} } @article {1661, title = {HLA-G 14 bp deletion/insertion polymorphism in celiac disease.}, journal = {Am J Gastroenterol}, volume = {106}, year = {2011}, month = {2011 Jan}, pages = {139-44}, abstract = {

OBJECTIVES: Nonclassical major histocompatibility class I HLA-G antigen is a tolerogenic molecule that inhibits lytic activity of natural killer (NK) cells and cytotoxic T lymphocytes. Because of its immunomodulatory and tolerogenic properties, HLA-G molecules may have a role in celiac disease (CD). We analyzed the HLA-G 14 bp deletion/insertion polymorphism, known to have a functional effect on mRNA stability, in a group of 522 CD patients, stratified for the presence of HLA-DQ2 genotype, and 400 healthy individuals to evaluate the possible effect of the polymorphism on the risk to develop the disease.

METHODS: HLA-G 14 bp deletion/insertion polymorphism (rs1704) was detected by polymerase chain reaction and double-checked by direct sequencing.

RESULTS: The 14 bp inserted (I) allele and the homozygous I/I genotype were significantly more frequent in CD patients than in healthy controls. The presence of I allele was associated with an increased risk of CD (OR 1.35) and the effect of I allele was consistent with a recessive genetic model (P<0.001).

CONCLUSIONS: Our results also indicate that the effect of the HLA-G D/I polymorphism is restricted for HLA-DQ2, and not simply due to the presence of linkage disequilibrium with the major known risk factor; moreover we found that the presence of the I allele confers an increased risk of CD in addition to the risk conferred by HLA-DQ2 alone and that subjects that carry both DQ2 and HLA-G I alleles have an increased risk of CD than subjects that carry DQ2 but not the I allele.

}, keywords = {Adolescent, Adult, Aged, Aged, 80 and over, Alleles, Case-Control Studies, Celiac Disease, Child, Child, Preschool, Confidence Intervals, Female, Genetic Predisposition to Disease, Genotype, Histocompatibility Antigens Class I, HLA Antigens, HLA-DQ Antigens, HLA-G Antigens, Humans, Male, Middle Aged, Mutagenesis, Insertional, Odds Ratio, Polymerase Chain Reaction, Polymorphism, Genetic, Reference Values, RNA Stability, Sequence Deletion, Young Adult}, issn = {1572-0241}, doi = {10.1038/ajg.2010.340}, author = {Fabris, Annalisa and Segat, Ludovica and Catamo, Eulalia and Morgutti, Marcello and Vendramin, Anna and Crovella, Sergio} } @article {1761, title = {Letter to the editor: acute effects of intravenous administration of pamidronate in patients with osteoporosis.}, journal = {J Korean Med Sci}, volume = {26}, year = {2011}, month = {2011 Jun}, pages = {848-9; author reply 850}, keywords = {Anti-Inflammatory Agents, Cytokines, Diphosphonates, Humans, Injections, Intravenous, Osteoporosis}, issn = {1598-6357}, doi = {10.3346/jkms.2011.26.6.848}, author = {Marcuzzi, Annalisa and Zanin, Valentina and Vuch, Josef and Pontillo, Alessandra and Crovella, Sergio} } @article {1746, title = {Mannose binding lectin gene (MBL2) functional polymorphisms are associated with systemic lupus erythematosus in southern Brazilians.}, journal = {Hum Immunol}, volume = {72}, year = {2011}, month = {2011 Jun}, pages = {516-21}, abstract = {

Susceptibility to systemic lupus erythematosus (SLE) has been associated with immunologic, environmental, and genetic factors. To uncover a possible association between MBL2 gene polymorphisms and SLE, we analyzed functional polymorphisms in the promoter and first exon of the MBL2 gene in 134 Brazilian SLE patients and 101 healthy controls. Genotype and allele frequencies of MBL2 A/O polymorphism were significantly different between patients and controls, and the O allele was associated with an increased risk of SLE. An association between low mannose binding lectin (MBL) producer combined genotypes and increased risk for SLE was also reported. Furthermore, when stratifying SLE patients according to clinical and laboratory data, an association between the A/O genotype and nephritic disorders and between the X/Y genotype and antiphospholipid syndrome was evident. Combined genotypes responsible for low MBL production were more frequently observed in SLE patients with nephritis. Our results indicate MBL2 polymorphisms as possible risk factors for SLE development and disease-related clinical manifestations.

}, keywords = {Adolescent, Adult, Aged, Brazil, DNA Mutational Analysis, Female, Gene Frequency, Genetic Association Studies, Genetic Predisposition to Disease, Genotype, Humans, Lupus Erythematosus, Systemic, Male, Mannose-Binding Lectin, Middle Aged, Polymorphism, Genetic, Population Groups, Promoter Regions, Genetic}, issn = {1879-1166}, doi = {10.1016/j.humimm.2011.03.007}, author = {Sandrin-Garcia, Paula and Brand{\~a}o, Lucas Andr{\'e} Cavalcanti and Coelho, Ant{\^o}nio Victor Campos and Guimar{\~a}es, Rafael Lima and Pancoto, Jo{\~a}o Alexandre Tr{\'e}s and Segat, Ludovica and Donadi, Eduardo Ant{\^o}nio and de Lima-Filho, Jos{\'e} Luiz and Crovella, Sergio} } @article {1619, title = {Mannose-binding lectin gene (MBL-2) polymorphism in oral lichen planus.}, journal = {Clin Oral Investig}, volume = {15}, year = {2011}, month = {2011 Oct}, pages = {699-704}, abstract = {

TNF-α may be associated with the etiopathogenesis of oral lichen planus (OLP), and it has been suggested that polymorphism of mannose-binding lectin (MBL) increases the in vitro production of TNF- α. The aim of the present study was to assess the relevance of genetic diversity of MBL in OLP. The study sample comprised 90 individuals, 45 OLP patients and 45 healthy volunteers. MBL-2 gene was amplified using real-time PCR. Frequency of A/A genotype was 55.6\% in OLP and 53.3\% in healthy volunteers. Likewise, A/0 heterozygote genotype was found in 42.2\% and 35.6\%; 2.2\% and 11.1\%, had the recessive 0/0 genotype respectively. Frequencies of the "A" and "0" alleles were 77\% and 23\% in the OLP group and 71.2\% in control group. There were no statistically significant differences regarding genotype frequency (p = 0.546) or allele frequency (p = 0.497). In conclusion, no significant association was found between polymorphism of MBL-2 gene and OLP.

}, keywords = {Adolescent, Adult, Aged, Female, Gene Expression Regulation, Gene Frequency, Genes, Recessive, Genetic Variation, Genotype, Heterozygote, Homozygote, Humans, Lichen Planus, Oral, Male, Mannose-Binding Lectin, Middle Aged, Mutation, Polymorphism, Genetic, Real-Time Polymerase Chain Reaction, Tumor Necrosis Factor-alpha, Young Adult}, issn = {1436-3771}, doi = {10.1007/s00784-010-0428-4}, author = {Barkokebas, Andreza and de Albuquerque T Carvalho, Alessandra and de Souza, Paulo Roberto Eleut{\'e}rio and Gomez, Ricardo Santiago and Xavier, Guilherme Machado and Ribeiro, Camila Maria Beder and Crovella, Sergio and Porter, Stephen Ross and Le{\~a}o, Jair Carneiro} } @article {1811, title = {MBL1 gene in nonhuman primates.}, journal = {Hum Immunol}, volume = {72}, year = {2011}, month = {2011 Nov}, pages = {1084-90}, abstract = {

With the aim of investigating the evolution of MBL1P1 (MBL1) gene, we analyzed the MBL1 coding region sequences in several specimens of two species of great apes, two species of Hylobatidae, four species of Cercopithecidae, and one Platyrrhine species, and in human beings. An indication for a progressive silencing of the molecule has been found. We found a \~{}300 bp insertion in the first intron of MBL1 in the Cercopithecidae that could explain the different splicing between primates species and possibly why Macaca mulatta is able to produce a complete protein, whereas in human beings the protein product is truncated. Based on our genetic findings, we could speculate that all the Cercopithecidae (presenting the 300-bp insertion) may express MBL1 mature protein like the M mulatta, whereas the lesser and great apes, which lack this insertion as do human beings, may have only the truncated pseudogene.

}, keywords = {Animals, Base Sequence, Evolution, Molecular, Gene Silencing, Genome, Humans, Mannose-Binding Lectin, Molecular Sequence Data, Multigene Family, Phylogeny, Polymorphism, Genetic, Primates, Pseudogenes, Sequence Alignment, Sequence Analysis, DNA, Sequence Deletion, Species Specificity}, issn = {1879-1166}, doi = {10.1016/j.humimm.2011.08.009}, author = {Segat, Ludovica and Crovella, Sergio} } @article {1690, title = {The missense variation Q705K in CIAS1/NALP3/NLRP3 gene and an NLRP1 haplotype are associated with celiac disease.}, journal = {Am J Gastroenterol}, volume = {106}, year = {2011}, month = {2011 Mar}, pages = {539-44}, abstract = {

OBJECTIVES: Celiac disease (CD) is a multifactorial common disorder with several susceptibility loci. Variations in the NALP1/NLRP1 and NALP3/NLRP3 genes have been reported to confer risk for several autoimmune conditions. We hypothesized that polymorphisms in these genes, due to their role in innate immunity and inflammatory processes, may affect susceptibility to CD.

METHODS: Two single-nucleotide polymorphisms (SNPs) in NLRP1 (rs12150220, rs2670660) and two SNPs (rs10754558, rs35829419) in NLRP3 genes were genotyped in 504 CD Italian patients and 256 healthy controls.

RESULTS: The minor A allele of NLRP3 rs35829419 (Q705K) polymorphism appeared to exert a protective role against the development of CD (P=0.029; odds ratio (OR)=0.56). Moreover, a particular NLRP1 haplotype was associated with predisposition to CD (P=0.003; OR=1.38), even more when present in combination with the rs35829419 major C allele (P=0.002; OR=1.42).

CONCLUSIONS: We hypothesized that the deregulation of CIAS1/NALP3/NLRP3 and NALP1/NLRP1 inflammasomes could have a role in CD pathogenesis.

}, keywords = {Adaptor Proteins, Signal Transducing, Adolescent, Apoptosis Regulatory Proteins, Carrier Proteins, Celiac Disease, Child, Child, Preschool, Female, Genetic Predisposition to Disease, Genotype, Glutamine, Haplotypes, Humans, Inflammasomes, Italy, Lysine, Male, Mutation, Missense, Polymorphism, Single Nucleotide}, issn = {1572-0241}, doi = {10.1038/ajg.2010.474}, author = {Pontillo, Alessandra and Vendramin, Anna and Catamo, Eulalia and Fabris, Annalisa and Crovella, Sergio} } @article {1733, title = {Phospholipase C-β3 is a key modulator of IL-8 expression in cystic fibrosis bronchial epithelial cells.}, journal = {J Immunol}, volume = {186}, year = {2011}, month = {2011 Apr 15}, pages = {4946-58}, abstract = {

Respiratory insufficiency is the major cause of morbidity and mortality in patients affected by cystic fibrosis (CF). An excessive neutrophilic inflammation, mainly orchestrated by the release of IL-8 from bronchial epithelial cells and amplified by chronic bacterial infection with Pseudomonas aeruginosa, leads to progressive tissue destruction. The anti-inflammatory drugs presently used in CF patients have several limitations, indicating the need for identifying novel molecular targets. To address this issue, we preliminarily studied the association of 721 single nucleotide polymorphisms from 135 genes potentially involved in signal transduction implicated in neutrophil recruitment in a cohort of F508del homozygous CF patients with either severe or mild progression of lung disease. The top ranking association was found for a nonsynonymous polymorphism of the phospholipase C-β3 (PLCB3) gene. Studies in bronchial epithelial cells exposed to P. aeruginosa revealed that PLCB3 is implicated in extracellular nucleotide-dependent intracellular calcium signaling, leading to activation of the protein kinase Cα and Cβ and of the nuclear transcription factor NF-κB p65. The proinflammatory pathway regulated by PLCB3 acts by potentiating the Toll-like Receptors{\textquoteright} signaling cascade and represents an interesting molecular target to attenuate the excessive recruitment of neutrophils without completely abolishing the inflammatory response.

}, keywords = {Adenosine Triphosphate, Calcium, Cell Line, Transformed, Cystic Fibrosis, Enzyme Activation, Epithelial Cells, Gene Expression, Gene Frequency, Genotype, Green Fluorescent Proteins, Host-Pathogen Interactions, Humans, Interleukin-8, Isoenzymes, Lung Diseases, Microscopy, Fluorescence, Phospholipase C beta, Polymorphism, Single Nucleotide, Protein Kinase C, Protein Kinase C beta, Pseudomonas aeruginosa, RNA Interference, Toll-Like Receptors, Transcription Factor RelA}, issn = {1550-6606}, doi = {10.4049/jimmunol.1003535}, author = {Bezzerri, Valentino and d{\textquoteright}Adamo, Pio and Rimessi, Alessandro and Lanzara, Carmen and Crovella, Sergio and Nicolis, Elena and Tamanini, Anna and Athanasakis, Emmanouil and Tebon, Maela and Bisoffi, Giulia and Drumm, Mitchell L and Knowles, Michael R and Pinton, Paolo and Gasparini, Paolo and Berton, Giorgio and Cabrini, Giulio} } @article {1752, title = {A polymorphism in PRF1 gene is associated with HIV-1 vertical transmission in Brazilian children.}, journal = {AIDS}, volume = {25}, year = {2011}, month = {2011 Feb 20}, pages = {535-7}, abstract = {

We investigated the possible association between PRF1 gene polymorphisms and HIV-1 vertical transmission in Brazilian children by analyzing PRF1 gene coding and untranslated regions in 173 perinatally infected children (HIV+), 51 exposed uninfected (HIV-), and 171 HIV-unexposed uninfected children. Seven single nucleotide polymorphisms were identified in our samples. The rs885822 C allele and CC genotype were significantly more frequent in HIV-negative than in HIV-positive patients and associated with a protective effect toward HIV vertical transmission.

}, keywords = {Brazil, Female, HIV Infections, HIV-1, Humans, Infant, Newborn, Infectious Disease Transmission, Vertical, Male, Polymorphism, Genetic, Pore Forming Cytotoxic Proteins, Pregnancy}, issn = {1473-5571}, doi = {10.1097/QAD.0b013e3283428b7c}, author = {Padovan, Lara and Segat, Ludovica and Crovella, Sergio} } @article {1644, title = {A polymorphism in the 5{\textquoteright} UTR of the DEFB1 gene is associated with the lung phenotype in F508del homozygous Italian cystic fibrosis patients.}, journal = {Clin Chem Lab Med}, volume = {49}, year = {2011}, month = {2011 Jan}, pages = {49-54}, abstract = {

BACKGROUND: The identification of cystic fibrosis (CF) patients who are at greater risk of lung damage could be clinically valuable. Thus, we attempted to replicate previous findings and verify the possible association between three single nucleotide polymorphisms (SNPs c.-52G>A, c.-44C>G and c.-20G>A) in the 5{\textquoteright} untranslated region (5{\textquoteright} UTR) of the β defensin 1 (DEFB1) gene and the CF pulmonary phenotype.

METHODS: Genomic DNA from 92 Italian CF patients enrolled in different regional CF centres was extracted from peripheral blood and genotyped for DEFB1 SNPs using TaqMan({\textregistered}) allele specific probes. In order to avoid genetic confounding causes that can account for CF phenotype variability, all patients were homozygous for the F508del CFTR mutation, and were then classified on the basis of clinical and functional data as mild lung phenotype (Mp, n=50) or severe lung phenotype patients (Sp, n=42).

RESULTS: For the c.-20G>A SNP, the frequency of the A allele, as well as the AA genotype, were significantly more frequent in Mp than in Sp patients, and thus this was associated with a protective effect against severe pulmonary disease (OR=0.48 and 0.28, respectively). The effect of the c.-20G>A A allele is consistent with a recessive model, and the protective effect against Sp is exerted only when it is present in homozygosis. For the other two SNPs, no differences were observed as allelic and genotypic frequency in the two subgroups of CF patients.

CONCLUSIONS: Our results, although necessary to be confirmed in larger and multiethnic populations, reinforce DEFB1 as a candidate modifier gene of the CF pulmonary phenotype.

}, keywords = {5{\textquoteright} Untranslated Regions, Adult, beta-Defensins, Cystic Fibrosis, Cystic Fibrosis Transmembrane Conductance Regulator, Female, Genotype, Homozygote, Humans, Italy, Male, Mutation, Phenotype, Polymorphism, Genetic, Young Adult}, issn = {1437-4331}, doi = {10.1515/CCLM.2011.023}, author = {Crovella, Sergio and Segat, Ludovica and Amato, Annalisa and Athanasakis, Emmanouil and Bezzerri, Valentino and Braggion, Cesare and Casciaro, Rosaria and Castaldo, Giuseppe and Colombo, Carla and Covone, Angela Elvira and De Rose, Virginia and Gagliardini, Rolando and Lanzara, Carmen and Minicucci, Laura and Morgutti, Marcello and Nicolis, Elena and Pardo, Francesca and Quattrucci, Serena and Raia, Valeria and Ravazzolo, Roberto and Seia, Manuela and Stanzial, Valentino and Termini, Lisa and Zazzeron, Laura and Cabrini, Giulio and Gasparini, Paolo} } @article {1748, title = {Role of DC-SIGN and L-SIGN receptors in HIV-1 vertical transmission.}, journal = {Hum Immunol}, volume = {72}, year = {2011}, month = {2011 Apr}, pages = {305-11}, abstract = {

The innate immune system acts in the first line of host defense against pathogens. One of the mechanisms used involves the early recognition and uptake of microbes by host professional phagocytes, through pattern recognition receptors (PRRs). These PRRs bind to conserved microbial ligands expressed by pathogens and initiate both innate and adaptative immune responses. Some PRRs located on the surface of dendritic cells (DCs) and other cells seem to play an important role in human immunodeficiency virus type 1 (HIV-1) transmission. Dendritic cell-specific intercellular adhesion molecule-3 grabbing non-integrin, CD209 (DC-SIGN) and its homolog, DC-SIGN-related (DC-SIGNR or L-SIGN) receptors are PPRs able to bind the HIV-1 gp120 envelope protein and, because alterations in their expression patterns also occur, they might play a role in both horizontal and vertical transmission as well as in disseminating the virus within the host. This review aims to explore the involvement of the DC-SIGN and L-SIGN receptors in HIV-1 transmission from mother to child.

}, keywords = {Cell Adhesion Molecules, HIV Infections, HIV-1, Humans, Immunity, Innate, Infectious Disease Transmission, Vertical, Lectins, C-Type, Polymorphism, Genetic, Receptors, Cell Surface}, issn = {1879-1166}, doi = {10.1016/j.humimm.2011.01.012}, author = {da Silva, Ronaldo Celerino and Segat, Ludovica and Crovella, Sergio} } @article {1749, title = {The role of mannose-binding lectin gene polymorphisms in susceptibility to HIV-1 infection in Southern Brazilian patients.}, journal = {AIDS}, volume = {25}, year = {2011}, month = {2011 Feb 20}, pages = {411-8}, abstract = {

OBJECTIVE: This study investigates the role of mannose-binding lectin (MBL) in the susceptibility to HIV-1 infection analyzing polymorphisms located at the MBL2 promoter and exon 1 regions.

MATERIALS AND METHODS: The prevalence of MBL2 variant alleles was investigated in 410 HIV-1-infected patients from the South Brazilian HIV cohort and in 345 unexposed uninfected healthy individuals. The promoter variants were genotyped using polymerase chain reaction with sequence-specific primers (PCR-SSP) and exon 1 variants were analyzed by real-time PCR using a melting temperature assay and were confirmed by PCR-restriction fragment length polymorphism (RFLP). MBL2 genotypic and allelic frequencies were compared between HIV-1-infected patients and controls using the chi-squared tests.

RESULTS: The analyses were performed subdividing the individuals according to their ethnic origin. Among Euro-derived individuals a higher frequency of the LX/LX genotype was observed in patients when compared to controls (P < 0.001). The haplotypic analysis also showed a higher frequency of the haplotypes associated with lower MBL levels among HIV-1-infected patients (P = 0.0001). Among Afro-derived individuals the frequencies of LY/LY and HY/HY genotypes were higher in patients when compared to controls (P = 0.009 and P = 0.02).

CONCLUSIONS: An increased frequency of MBL2 genotypes associated with low MBL levels was observed in Euro-derived patients, suggesting a potential role for MBL in the susceptibility to HIV-1 infection in Euro-derived individuals.

}, keywords = {Adult, Aged, Brazil, Female, Genetic Predisposition to Disease, HIV Infections, HIV-1, Humans, Lectins, C-Type, Male, Mannose-Binding Lectin, Mannose-Binding Lectins, Middle Aged, Polymorphism, Genetic, Promoter Regions, Genetic, Receptors, Cell Surface, Young Adult}, issn = {1473-5571}, doi = {10.1097/QAD.0b013e328342fef1}, author = {da Silva, Gabriela Kniphoff and Guimar{\~a}es, Rafael and Mattevi, Vanessa Su{\~n}{\'e} and Lazzaretti, Rosmeri Kuhmmer and Sprinz, Eduardo and Kuhmmer, Regina and Brand{\~a}o, Lucas and Crovella, Sergio and Chies, Jos{\'e} Artur Bogo} } @article {1721, title = {The significance of mannose-binding lectin gene polymorphisms on the risk of BK virus coinfection in women with human papillomavirus-positive cervical lesions.}, journal = {Hum Immunol}, volume = {72}, year = {2011}, month = {2011 Aug}, pages = {663-6}, abstract = {

The simultaneous detection of oncogenic human papillomavirus (HPV) and BK virus (BKV) has been recently reported in cervical cancers, suggesting that these viruses may act together in the process of cell transformation; host genetic polymorphisms may also influence virus persistence/reactivation. To disclose a possible role of the gene encoding for the mannose-binding lectin, MBL2, in susceptibility to BKV infection, we analyzed functional polymorphisms in the first exon of MBL2 in women stratified for the presence/absence of BKV and affected by different grades of HPV-induced cervical precancerous lesions. All BKV-positive samples were also HPV positive (HPV 16), and all presented with high-grade squamous intraepithelial lesions. The MBL2 A allele was significantly more frequent in BKV-negative patients than in BKV-positive patients. These data indicate a possible role for the A allele in conferring protection to BKV infection in high-risk HPV-positive women (odds ratio 0.40, 95\% confidence interval 0.20-0.85, p = 0.01).

}, keywords = {Adult, Aged, Alleles, BK Virus, Cervical Intraepithelial Neoplasia, Cervix Uteri, DNA Fingerprinting, DNA, Viral, Female, Gene Frequency, Genetic Association Studies, Genetic Predisposition to Disease, Genotype, Human papillomavirus 16, Humans, Italy, Mannose-Binding Lectin, Odds Ratio, Papillomavirus Infections, Polymorphism, Genetic, Polyomavirus Infections, Risk, Viral Load}, issn = {1879-1166}, doi = {10.1016/j.humimm.2011.04.002}, author = {Comar, Manola and Segat, Ludovica and Crovella, Sergio and Bovenzi, Massimo and Cortini, Enzo and Tognon, Mauro} } @article {1611, title = {Tag-single nucleotide polymorphism-based human leukocyte antigen genotyping in celiac disease patients from northeastern Italy.}, journal = {Hum Immunol}, volume = {72}, year = {2011}, month = {2011 Jun}, pages = {499-502}, abstract = {

We genotyped celiac disease (CD)-associated haplotypes DQ2.5, DQ8, DQ2.2, and DQ7 in 1005 CD patients from North Eastern Italy using a Tag-single nucleotide polymorphism (SNPs) approach and real time PCR platform, checking the accuracy and reliability of the method and comparing it to traditional PCR-SSP. Only 14 of 2010 chromosomes analyzed (0.7\%) showed discrepancies between the Tag-SNPs real-time polymerase chain reaction (PCR) method and the PCR-single-strand polymorphism (SSP) technique, indicating a high sensitivity and specificity (ranging from 0.987 to 1 and from 0.998 to 0.999, respectively) for tagging with respect to corresponding human leukocyte antigen (HLA) alleles identified by PCR-SSP. Moreover, the overall cost of the Tag-SNPs HLA typing method was low (3 to 4 {\texteuro}/sample instead of 35 to 70 {\texteuro}/sample with commercial kits), making it suitable for mass screenings. Hence, we believe that the Tag-SNPs HLA typing could be used to complement or replace classic HLA typing in at high-risk groups, for research purposes and eventually in population screening programs.

}, keywords = {Adolescent, Adult, Aged, Celiac Disease, Child, Child, Preschool, Female, Humans, Infant, Italy, Male, Mass Screening, Middle Aged, Polymerase Chain Reaction, Polymorphism, Single Nucleotide, Reproducibility of Results, Reverse Transcriptase Polymerase Chain Reaction, Sensitivity and Specificity}, issn = {1879-1166}, doi = {10.1016/j.humimm.2011.03.008}, author = {Vatta, Serena and Fabris, Annalisa and Segat, Ludovica and Not, Tarcisio and Crovella, Sergio} } @article {1689, title = {A 3{\textquoteright}UTR SNP in NLRP3 gene is associated with susceptibility to HIV-1 infection.}, journal = {J Acquir Immune Defic Syndr}, volume = {54}, year = {2010}, month = {2010 Jul}, pages = {236-40}, abstract = {

OBJECTIVES: Innate immunity genes polymorphisms are known to be involved in the multifactorial susceptibility to HIV-1 infection. Recently it has been hypothesized that inflammasomes could play an important role in the host response to viruses. The aim of our study is to verify if single-nucleotide polymorphisms (SNPs) in genes encoding for NALPs-innate immune receptors that form molecular complexes leading to the production of IL-1beta and the activation of immune response-could influence the individual susceptibility to HIV-1.

DESIGN: We performed an association study analyzing 2 NLRP1 and NLRP3 SNPs in HIV-1 vertically infected Brazilian children (n = 135), HIV-1-infected Brazilain adults (n = 192) and HIV-1-positive Italian seropositive subjects (n = 192).

RESULTS: The 3{\textquoteright}UTR NLRP3 rs10754558 SNP was associated with HIV-1 infection in all the studied groups. The frequency of rs10754558 G allele was differently distributed within seropositive subjects (HIV+) and controls, and in particular the GG genotype was less frequent in HIV+.

CONCLUSIONS: susceptibility to HIV-1 infection is associated with a 3{\textquoteright}UTR NLRP3 polymorphism. This is the first report linking SNPs in the NALPs with HIV-1 infection, and further epidemiologic and functional studies are needed to deeper investigate the role of inflammasome in the susceptibility to HIV-1 infection.

}, keywords = {Adult, Brazil, Carrier Proteins, Case-Control Studies, Child, Child, Preschool, Female, Genetic Predisposition to Disease, Genotype, HIV Infections, HIV-1, Humans, Infant, Infectious Disease Transmission, Vertical, Male, Middle Aged, Polymorphism, Single Nucleotide, Pregnancy, Young Adult}, issn = {1944-7884}, doi = {10.1097/QAI.0b013e3181dd17d4}, author = {Pontillo, Alessandra and Brand{\~a}o, Lucas A and Guimar{\~a}es, Rafael L and Segat, Ludovica and Athanasakis, Emmanouil and Crovella, Sergio} } @article {1643, title = {Antimicrobial plant peptides isolated from native and crop species in Brazil: development of new drugs.}, journal = {Curr Protein Pept Sci}, volume = {11}, year = {2010}, month = {2010 May}, pages = {180}, keywords = {Antimicrobial Cationic Peptides, Biodiversity, Brazil, Crops, Agricultural, Drug Discovery, Genomics, Plants}, issn = {1875-5550}, author = {Crovella, Sergio} } @article {1701, title = {Beta defensin-1 gene (DEFB1) polymorphisms are not associated with atopic dermatitis in children and adolescents from northeast Brazil (Recife, Pernambuco).}, journal = {Int J Dermatol}, volume = {49}, year = {2010}, month = {2010 Jun}, pages = {653-7}, abstract = {

BACKGROUND: Atopic dermatitis (AD) is a common inflammatory skin disease resulting from the interplay between environmental, immunological and genetic factors. In our study, we investigated the role of three single nucleotide polymorphisms (SNPs) at 5{\textquoteright}-UTR of DEFB1 gene, encoding for the human beta defensin-1, on the susceptibility to develop AD in a group of Brazilian children and adolescents.

METHODS: Three SNPs, -20 G/A (rs11362), -44 C/G (rs1800972), and -52 G/A (rs1799946) at 5{\textquoteright}-UTR of DEFB1 gene were genotyped in two groups of children and adolescents, one affected by AD (96 subjects), the other healthy (191 individuals), from northeast Brazil.

RESULTS: -44 C/G frequencies were comparable between the two groups. The -20 GG genotype was more frequent in AD subjects than in healthy controls; the -52 GG, conversely, was more frequent in healthy controls than in AD. However, both these differences did not reach statistical significance. Also, association between SNPs and AD severity has been shown. The analysis of DEFB1 haplotypes did not highlight any association of the three SNPs with AD development or disease severity.

CONCLUSIONS: Our results seem to exclude a role for the -44 C/G DEFB1 SNPs on the pathogenesis and severity of AD, while for the -20 C/G and -52 G/A, even if not statistically significant, we evidenced a slight trend for susceptibility (-20 GG) and protection (-52 GG) for the development of AD. However, as controversial findings have been reported in the literature, the role of DEFB1 in the development of AD and in the severity of the phenotype deserves further investigation.

}, keywords = {Adolescent, beta-Defensins, Brazil, Child, Child, Preschool, Dermatitis, Atopic, Female, Gene Frequency, Genetic Predisposition to Disease, Haplotypes, Humans, Infant, Male, Polymorphism, Single Nucleotide, Risk Factors}, issn = {1365-4632}, doi = {10.1111/j.1365-4632.2009.04343.x}, author = {Segat, Ludovica and Guimar{\~a}es, Rafael L and Brand{\~a}o, Lucas A C and Rocha, Cintia R C and Zanin, Valentina and Trevisiol, Chiara and de Lima Filho, Jos{\'e} Luiz and Crovella, Sergio} } @article {1623, title = {Ethnobotanical bioprospection of candidates for potential antimicrobial drugs from Brazilian plants: state of art and perspectives.}, journal = {Curr Protein Pept Sci}, volume = {11}, year = {2010}, month = {2010 May}, pages = {189-94}, abstract = {

Despite of the high biological diversity and traditional use of medicinal plants in Brazil, no comprehensive ethnobotanic review of plants with potential antimicrobial effects is available. In the present work own field information is aggregated with a literature review, identifying 433 Brazilian plant species potentially useful for identification of antimicrobial peptides. They included mainly woody species, distributed on 100 plant families (93 angiosperms and 7 pteridophytes) and 266 genera, covering all Brazilian regions and ecosystems. Main plant parts and indications for their use are presented and discussed, revealing the high potential that these plants present for the future planning strategies regarding the future development of antimicrobial drugs.

}, keywords = {Anti-Infective Agents, Biodiversity, Brazil, Ethnobotany, Plants}, issn = {1875-5550}, author = {Benko-Iseppon, Ana Maria and Crovella, Sergio} } @article {1634, title = {High polymorphism of the MBL2 gene in patients with atopic dermatitis.}, journal = {Ann Allergy Asthma Immunol}, volume = {105}, year = {2010}, month = {2010 Jul}, pages = {39-42}, abstract = {

BACKGROUND: Low serum levels of mannose-binding lectin (MBL) are determined mainly by variant alleles of the MBL2 gene and it has been suggested that MBL may play a role in the susceptibility to atopic dermatitis (AD).

OBJECTIVE: The aim was to investigate the difference of the frequency of MBL2 variant alleles in AD patients and in a group of individuals without AD, and associate the MBL2 alleles with AD severity.

METHODS: MBL2 variant allele{\textquoteright}s frequency was investigated in 131 children with AD and 165 healthy children/adolescents matched by convenience. The severity of disease was graded according to the SCORing Atopic Dermatitis (SCORAD) index. The first exon variants were called "O" and the wild type "A". The variants in the promoter were H/L at -550 and X/Y at -221, determined by Real Time PCR.

RESULTS: Children with AD had higher frequency of allele O and the genotypes related to low or deficient levels of MBL, when compared to the healthy group (p = 0.0012 and p < 0.001, respectively), but not with AD severity.

CONCLUSION: Low or deficient MBL serum levels determined genetically may contribute to the predisposition for AD, but not for disease severity.

}, keywords = {Adolescent, Alleles, Child, Child, Preschool, Dermatitis, Atopic, Disease Progression, Female, Genetic Predisposition to Disease, Genotype, Humans, Infant, Male, Mannose-Binding Lectin, Polymorphism, Genetic, Promoter Regions, Genetic}, issn = {1081-1206}, doi = {10.1016/j.anai.2010.03.017}, author = {Carr{\'e}ra, Matilde Campos and Moura, Patr{\'\i}cia and Crovella, Sergio and de Souza, Paulo Roberto Eleut{\'e}rio and de Alencar, Luiz Cl{\'a}udio Arraes and Sarinho, Emanuel} } @article {1683, title = {Histatins in non-human primates: gene variations and functional effects.}, journal = {Protein Pept Lett}, volume = {17}, year = {2010}, month = {2010 Jul}, pages = {909-18}, abstract = {

Human histatins are histidine-rich, low molecular weight salivary proteins that contribute to the immune system of the oral cavity. In this work, nucleotide sequences of the HIS1 (coding for histatin 1) and HIS2 (coding for histatin 3) genes, homologous to the human ones, have been sequenced and analysed in five primates species including Great Ape, Hylobatidae and Cercopithecidae. In HIS1, the region corresponding to the putative mature peptide shows a premature stop codon in Macaca and Cercopithecus, while HIS2 a six codon insertion in the Cercopithecidae. Histatin 5, a 24-residue peptide derived from histatin 3, is the most antimicrobially active among human histatins, thus macaque and nomascus orthologues of histatin 5 were selected for chemical synthesis and functional characterization, in comparison to the human peptide. All synthesized histatins are predicted to be poorly amphipathic, depending on the charged state of His residues and assume partially a-helical conformations only in lipophilic conditions. Antimicrobial assays against Candida and Criptococcus spp. indicate somewhat different spectra of in vitro activity against the tested fungi. We have described HIS1 and HIS2 gene variations in primates and have analysed their functional effects on selected Hst5 orthologues. The human antimicrobial peptide has been proposed to represent an important lead for new generation of antimicrobial compounds for the treatment of oral mycoses, thus the information from the non-human primates histatins studied may aid strategies for drugs design.

}, keywords = {Amino Acid Sequence, Animals, Anti-Infective Agents, Base Sequence, Candida, Catarrhini, Cell Proliferation, Computational Biology, Cryptococcus, Genetic Variation, Histatins, Humans, Molecular Sequence Data, Phylogeny, Sequence Alignment, Sequence Analysis, DNA}, issn = {1875-5305}, author = {Padovan, Lara and Segat, Ludovica and Pontillo, Alessandra and Antcheva, Nikolinka and Tossi, Alessandro and Crovella, Sergio} } @article {1700, title = {HLA-G*0105N allele is associated with augmented risk for HIV infection in white female patients.}, journal = {AIDS}, volume = {24}, year = {2010}, month = {2010 Jul 31}, pages = {1961-4}, abstract = {

We analyzed HLA-G 3777G > C, HLA-G 14 bp deletion/insertion and HLA-G*0105N polymorphisms in HIV-positive white adult participants, infected through horizontal heterosexual transmission, and unexposed uninfected individuals, all from north eastern Italy. We report a new association between the HLA-G*0105N allele and HIV infection in adult white female participants, being HLA-G*0105N null allele correlated with an augmented risk (odds ratio = 4.35, 95\% confidence interval = 1.38-18.07, P = 0.005) for HIV infection.

}, keywords = {Adolescent, Adult, Aged, Female, Genetic Predisposition to Disease, Histocompatibility Antigens Class I, HIV Infections, HIV-1, Humans, Middle Aged, Polymorphism, Genetic, Young Adult}, issn = {1473-5571}, doi = {10.1097/QAD.0b013e32833c3324}, author = {Segat, Ludovica and Catamo, Eulalia and Fabris, Annalisa and Morgutti, Marcello and D{\textquoteright}Agaro, Pierlanfranco and Campello, Cesare and Crovella, Sergio} } @article {1759, title = {[Human papillomavirus cervical infection: viral genotyping and risk factors for high-grade squamous intraepithelial lesion and cervix cancer].}, journal = {Rev Bras Ginecol Obstet}, volume = {32}, year = {2010}, month = {2010 Oct}, pages = {476-85}, abstract = {

PURPOSE: to analyze the characteristics of viral infection and the risk factors for high-grade squamous intraepithelial lesion and cervical carcinoma in women with cervical HPV infection.

METHODS: a case-control study was conducted on women with cervical HPV at a Gynecology reference service enrolled at the Public Health System, located in Recife, Northeastern Brazil. The groups of cases (72 women with high-grade squamous intraepithelial lesion or cervical cancer) and controls (176 women with normal Pap smear or benign alterations) were investigated for six viral genotypes (HPV 16, 18, 31, 33, 6, 11) in ecto- and endocervical material using MY09/MY11 primers. The independent variables were ranked in three levels of determination: distal (sociodemographic), intermediate (behavioral) and proximal (previous Pap smear). The homogeneity of proportions was tested (χ2), unadjusted Odds Ratios (OR) were obtained and hierarchical logistic regression was applied to the final model, with adjustment of the effect of each variable to the outcome based on the variables in the same and previous levels of causality.

RESULTS: the viral genotype of cervical infection was identified in 76.6\% of the 248 women participating in the study. High-risk HPV genotypes (83.4\% of cases and 67.1\% of controls) were predominant, especially HPV 16 and 31. The distal risk factors identified were: living in a rural area (OR=2.71, 95\%CI: 1.18-6.23), less than three years of study (OR=3.97, 95\%CI: 2.09-7.54) and family income below two minimum wages (OR=3.30, 95\%CI: 1.04-10.51); intermediate: four or more pregnancies (OR=2.00, 95\%CI: 1.06-3.76); and proximal: absence of a previous Pap smear (OR=9.74, 95\%CI: 2.48-38.28).

CONCLUSIONS: genotypes 16 and 31 of cervical HPV infection are predominant among women assisted by the Public Health System in Northeastern Brazil. Socioeconomic and reproductive factors, as well as the absence of cytological screening, represent risk factors for the progression of infection to high-grade squamous intraepithelial lesion and cervical cancer.

}, keywords = {Adult, Carcinoma in Situ, Case-Control Studies, Female, Genotype, Humans, Papillomaviridae, Papillomavirus Infections, Risk Factors, Socioeconomic Factors, Uterine Cervical Neoplasms}, issn = {1806-9339}, author = {de Mendon{\c c}a, Vilma Guimar{\~a}es and Guimar{\~a}es, Maria Jos{\'e} Bezerra and de Lima Filho, Jos{\'e} Luiz and de Mendon{\c c}a, Carolina Guimar{\~a}es and Martins, Danyelly Bruneska Gondim and Crovella, Sergio and de Alencar, Luiz Cl{\'a}udio Arraes} } @article {1674, title = {Natural isoprenoids inhibit LPS-induced-production of cytokines and nitric oxide in aminobisphosphonate-treated monocytes.}, journal = {Int Immunopharmacol}, volume = {10}, year = {2010}, month = {2010 Jun}, pages = {639-42}, abstract = {

The inhibition of mevalonate pathway through genetic defects (mevalonate kinase deficiency, MKD) or pharmacologic drugs (aminobisphosphonates) causes a shortage of intermediate compounds and, in particular, of geranylgeranyl-pyrophosphate (GGPP) associated to the activation of caspase-1 and IL-1beta release. Geraniol (GOH), farnesol (FOH), geranylgeraniol (GGOH) and menthol (MOH), due to their isoprenoid structure, are supposed to enter the mevalonate pathway and to by-pass the biochemical block, reconstituting the pathway. Considering the already known side effects of aminobisphosphonates, and the lack of a specific treatment for MKD, we evaluated the impact of these natural isoprenoids compounds in a RAW cell lines chemically treated with the aminobisphosphonate alendronate, and in monocytes isolated from 2 patients affected by MKD. GOH, FOH, GGOH and MOH were all capable to diminish inflammatory marker levels induced by LPS. These natural isoprenoids could be proposed as novel therapeutic approach for the still orphan drug MKD, but also considered for the evaluation of possible inflammatory side effects of aminobisphosphonates.

}, keywords = {Animals, Cell Line, Cells, Cultured, Child, Child, Preschool, Cytokines, Diphosphonates, Humans, Inflammation, Interleukin-1beta, Lipopolysaccharides, Male, Mevalonate Kinase Deficiency, Mice, Monocytes, Nitric Oxide, Terpenes}, issn = {1878-1705}, doi = {10.1016/j.intimp.2010.03.008}, author = {Marcuzzi, Annalisa and Tommasini, Alberto and Crovella, Sergio and Pontillo, Alessandra} } @article {1654, title = {Targeting farnesyl-transferase as a novel therapeutic strategy for mevalonate kinase deficiency: in vitro and in vivo approaches.}, journal = {Pharmacol Res}, volume = {61}, year = {2010}, month = {2010 Jun}, pages = {506-10}, abstract = {

Mevalonate kinase deficiency (MKD) is a rare inborn auto-inflammatory disease due to the impairment of the pathway for the biosynthesis of cholesterol and non-sterol isoprenoids. The shortage of isoprenoids compounds and in particular of geranylgeranylpyrophosphate (GGPP) was recently associated to the MKD characteristic inflammatory attacks. The aim of this study is to demonstrate that the normalization of the mevalonate pathway intermediates levels and in particular of GGPP, through the specific inhibition of farnesyl-transferase (FT) with Manumycin A could ameliorate the inflammatory phenotype of MKD patients. The effect of Manumycin A was first evaluated in MKD mouse and cellular models, chemically obtained using the aminobisphosphonate alendronate (ALD), and then in monocytes isolated from 2 MKD patients. Our findings were compared to those obtained by using natural exogenous isoprenoids (NEIs). Manumycin A was able to significantly reduce the inflammatory marker serum amyloid A in ALD-treated Balb/c mice, as well as IL-1 beta secretion in ALD-monocytes and in MKD patients. These results clearly showed that, through the inhibition of FT, an increased number of mevalonate pathway intermediates could be redirected towards the synthesis of GGPP diminishing the inflammatory response. The importance in limiting the shortage of GGPP was emphasized by the anti-inflammatory effect of NEIs that, due to their biochemical structure, can enter the MKD pathway. In conclusion, manumycin A, as well as NEIs, showed anti-inflammatory effect in MKD models and especially in MKD-monocytes, suggesting novel approaches in the treatment of MKD, an orphan disease without any efficacious treatment currently available.

}, keywords = {Adult, Animals, Anti-Inflammatory Agents, Cells, Cultured, Child, Preschool, Enzyme Inhibitors, Farnesyltranstransferase, Female, Humans, Male, Mevalonate Kinase Deficiency, Mevalonic Acid, Mice, Mice, Inbred BALB C, Monocytes, Polyenes, Polyisoprenyl Phosphates, Polyunsaturated Alkamides, Young Adult}, issn = {1096-1186}, doi = {10.1016/j.phrs.2010.02.012}, author = {De Leo, Luigina and Marcuzzi, Annalisa and Decorti, Giuliana and Tommasini, Alberto and Crovella, Sergio and Pontillo, Alessandra} } @article {1711, title = {The universe of immune deficiencies in Crohn{\textquoteright}s disease: a new viewpoint for an old disease?}, journal = {Scand J Gastroenterol}, volume = {45}, year = {2010}, month = {2010 Oct}, pages = {1141-9}, abstract = {

Crohn{\textquoteright}s disease (CD) is generally considered a multifactorial disorder, since different genetic and environmental factors are thought to play a role in its pathogenesis. Recently, genome wide linkage studies allowed to identify the association of several loci with the increased risk of CD, although it is still unclear how they interact with environmental factors in causing the disease. The fact that many CD-risk-related genes are involved in the function of phagocytes seems in agreement with the well known role of these cells in CD histopathology. Functional defects in cytokine production or in clearance of bacteria in CD patients have recently been reported. Growing evidence that CD could arise from primary phagocyte immunodeficiency is also coming from the study of cases with early onset in infancy. We review such evidences starting from selected cases and discuss the clinical implications of these findings.

}, keywords = {Biological Markers, Crohn Disease, Cytokines, Evidence-Based Medicine, Granulomatous Disease, Chronic, Hematopoietic Stem Cell Transplantation, Humans, Immunosuppressive Agents, Phagocytes, Treatment Outcome, Wiskott-Aldrich Syndrome}, issn = {1502-7708}, doi = {10.3109/00365521.2010.492529}, author = {Tommasini, Alberto and Pirrone, Angela and Palla, Gabriella and Taddio, Andrea and Martelossi, Stefano and Crovella, Sergio and Ventura, Alessandro} }