Umapathy Shankarkumar

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Convincing results on HLA Class II associations have been reported, however data on HLA class I association are limited and inconsistent from studies in Leprosy. We present here the HLA A, B, and C allele distribution by molecular high resolution PCR-SSOP technique in 32 leprosy patients compared with the 67 controls, from the same ethnic background. The(More)
Since the discovery of the HLA system, over 40 years ago, we now have an understanding of the role of HLA molecules in the adaptive immune response, as well as in the alloimmune response experienced when foreign HLA is introduced into an individual via transplant, transfusion or pregnancy. Retrospective studies in the 1970s and 1980s illustrated the(More)
Genetic factors such as human leukocyte antigen (HLA) affect the infection and progression of HIV disease. The dependence of effective cytotoxic T lymphocyte (CTL) activity on HIV-specific T-helper responses has become increasingly evident and studies provide strong evidence that T-helper responses and the magnitude of CTL responses are closely linked. HLA(More)
Analysis of the human immunodeficiency virus type 1 (HIV-1) cytolytic T lymphocyte (CTL) epitopes recognized by the targeted population is critical for HIV-1 vaccine design. Peripheral blood mononuclear cells from 47 Indian subjects at different stages of HIV-1 infection were tested for HIV-1 Gag-, Nef-, and Env-specific T cell responses by interferon(More)
South India is one of the oldest geophysical regions mainly occupied by Dravidian language-speaking people. Here a random panel of 61 unrelated Nadar healthy individual from Tamil Nadu State were analyzed and compared with other populations of India and the world. HLA-A, B and C alleles frequencies and their haplotype frequencies were determined by(More)
The population of Western India is described as Australoid or Proto-Australoid elements with admixture from Caucasian, Mongoloid, and Aryan races. We investigated the frequencies of human leukocyte antigen (HLA) A*02 alleles and their B* allele haplotype associations among 664 healthy unrelated Western Indians. Fifty-one of 204 serologically typed A2(More)
We have characterized HLA B27 alleles in a sample population of Maharastra, Western Indians (n = 51), with the aim to investigate the different subtypes present among this population. The study was carried out using polymerase chain reaction with sequence-specific primers (PCR-SSP) and reverse line strip (RLS) techniques. Significant new findings have(More)
BACKGROUND Various studies worldwide suggest that human leukocyte antigen (HLA) region may be involved in the genetic susceptibility of vitiligo but little information is available from India. AIM To find the HLA associated susceptibility to develop vitiligo in Indian patients and to detect role of HLA in familial vitiligo. METHODS This was a case(More)
HLA-B27 is a serological specificity which encompasses an increasing number of subtypes that show varied racial/ethnic prevalence in the world. Here, data from 5129 Indians (4500 population and caste; 629 tribal) is compiled from the literature. In addition, HLA-B27 subtyping of 58 positive individuals from Maharastra is presented. Analysis revealed an(More)