@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 {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} }