Analysis of CTLA-4+49A/G gene polymorphism in cases with leprosy of Azerbaijan, Northwest Iran
2018
Almasi, Shohreh | Aliparasti, Mohammad Reza | Naghili, Behrouz | Yeganeh, Khalil | Rahnama, Badrossadat | Tavanafar, Fatemeh | Hazhir Karzar, Bita | Amini Khiabani, Syamak | Naghili, Arman | Babaloo, Zohreh
Leprosy, which is developed by the obligate intracellular Mycobacterium leprae (ML); has different manifestations, associated with the host immune responses. The protective immune response against ML includes T-cell-mediated immunity. The CTLA-4 has a great impact as a negative regulator of the immune response and maintenance of peripheral tolerance.This study analyzed the relationship between CTLA-4+49A/G gene polymorphism and clinical manifestation of leprosy disease and susceptibility among the Azeri population living Northwest Iran.One hundred and ninety-two leprosy patients and 185 healthy controls participated in the study. CTLA-4+49A/G genotyping was conducted via tetra-primer amplification refractory mutation system–polymerase chain reaction (T-ARMS–PCR) analysis.The allelic and genotypic frequencies of +49A/G gene polymorphism were similar in controls and patients. However, older ages, older age of onset and over-representation in male were observed in lepromatous leprosy patient carriers of GG genotype. The current study demonstrates that although CTLA-4+49A/G polymorphism was not correlated with a higher genetic risk for leprosy, the presence of a GG genotype was associated with older ages, older age of onset and over-representation in male in Iranian Azeri population.
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