IL-10 Promoter -592 Polymorphism may Influence Susceptibility to HIV Infection in South Indian Population

Title:IL-10 Promoter -592 Polymorphism may Influence Susceptibility to HIV Infection in South Indian Population

Volume: 16 Issue: 1

Author(s): Murugesan Harishankar, Harini Ravikrishnan, Akshaya Ravishankar, Luke Elizabeth Hanna, Soumya Swaminathan, Paramasivam Selvaraj and Ramalingam Bethunaickan*

Affiliation:

• Department of Immunology, National Institute for Research in Tuberculosis, Chennai,India

Keywords: IL-10, TGF-β, polymorphism, HIV, TB, PCR-RFLP.

Abstract: Background: Genetic factors play an important role in the development of disease susceptibility or protection. Cytokine gene polymorphisms are reported to be associated with altered levels of cytokine production that can impact disease progression in HIV and TB.

Objective: In this study, we studied IL-10 -592(C/A) and TGF-β -509 (C/T) promoter polymorphisms to understand their role in susceptibility or resistance to HIV and TB in a South Indian population.

Method: Genomic DNA was isolated from healthy controls, pulmonary tuberculosis patients (n=122) and HIV positive individuals (n=100) and used for genotyping by polymerase chain reaction followed by restriction fragment length polymorphism (PCR-RFLP) method.

Results: Results revealed that under dominant model (CC vs CA+AA), IL-10 -592 ‘A' allele either ‘CA' or ‘AA' combinations significantly associated with susceptibility to HIV compared to healthy controls (OR: 1.88(1.05-3.35); p=0.030). However, we found no significant association with TB. TGF-β -509 polymorphism did not associate with either HIV or TB under overdominant model. Neither of the promoter polymorphisms associated with sex in either HIV or TB. However, a trend towards higher risk to HIV was found in females compared with males in IL-10 -592 ‘AA' genotype.

Conclusion: This study suggests the association of IL-10 -592 “AA” genotype with susceptibility to HIV under dominant model in the Southern Indian population. Future studies are needed with a larger sample size in order to confirm the observations made in this study.

Cite this article as:

Harishankar Murugesan, Ravikrishnan Harini , Ravishankar Akshaya, Hanna Elizabeth Luke , Swaminathan Soumya , Selvaraj Paramasivam and Bethunaickan Ramalingam *, IL-10 Promoter -592 Polymorphism may Influence Susceptibility to HIV Infection in South Indian Population, Current HIV Research 2018; 16 (1) . https://dx.doi.org/10.2174/1570162X16666180219153752