@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 {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 {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 {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 {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 {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 {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} }