5' regulatory and 3' untranslated region polymorphisms of vitamin D receptor gene in south Indian HIV and HIV-TB patients.

Journal of Clinical Immunology
K AlagarasuP R Narayanan

Abstract

Vitamin D receptor (VDR) gene polymorphisms in the 5' regulatory region (Cdx2 and A-1012G), coding region (FokI), and 3' untranslated region (UTR; BsmI, ApaI, and TaqI) were studied to find out whether these polymorphisms are associated with susceptibility to or protection against HIV-1 and development of tuberculosis (TB) in human immunodeficiency virus (HIV)-1-infected patients. The study was carried out in 131 HIV patients without TB (HIV+ TB-) and 113 HIV patients with TB (HIV+ TB+; includes 82 patients with pulmonary TB (HIV+ PTB+) and 31 with extra pulmonary TB), 108 HIV-negative pulmonary TB patients (HIV- PTB+), and 146 healthy controls. Among the 5' regulatory and coding region polymorphisms, significantly increased frequency of G/A genotype of Cdx-2 was observed in HIV+ TB- group compared to controls (p = 0.012, odds ratio (OR) 1.89 95% confidence interval (CI) 1.14-3.15). In the 3' UTR genotypes, a decreased frequency of b/b genotype of BsmI in total HIV patients (p = 0.014, OR 0.54 95% CI 0.32-0.89) and increased frequencies of A/A genotype of ApaI in HIV+ TB+ patients (p = 0.041, OR 1.77 95% CI 1.02-3.06) and t/t genotype of TaqI in HIV+ PTB+ patients (p = 0.05, OR 2.32 95% CI 0.99-5.46) were observed compared to c...Continue Reading

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