@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 {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 {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 {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 {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} }