@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 {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} }