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  • Title: KIR genotyping in the selected population in Andhra Pradesh (India).
    Author: Vaishnav G, Krupanidhi S, Sanjeevi CB.
    Journal: Roum Arch Microbiol Immunol; 2014; 73(1-2):43-50. PubMed ID: 25518570.
    Abstract:
    BACKGROUND: The population is not always homogeneous in relation to the representation and functioning of genes. Therefore, the presence of allogenicity is a universal phenomenon. The profound variability is noticed among the members of the human population with reference to the resistance against infections and late onset of diseases. In this line, a few sets of alleles which come under the domain of immune function namely KIRs (Killer immunoglobulin-like receptor genes) and HLA-I have been chosen to report in the population of Puttaparthi (India). OBJECTIVES: The genotyping of the population is the current ongoing focus of our team wherein the distribution of the following alleles has been taken up in the mixed ethnic groups of Puttaparthi as a prelude to earmark them as genotypic markers in future studies relating to susceptible diseases. METHODS: The PCR protocols for the identified immune related genes viz., KIR- 2DL1, 2DL2, 2DL3, 2DL4, 2DL5, 3DL1, 3DL2, 3DL3, 3DS1, 2DS1, 2DS2, 2DS3, 2DS4, 2DS5, 2DP1, 3DP1; HLA- C1 and HLA-C2 have been standardized. RESULTS & INTERPRETATION: In the present study, except KIR 2DL2, the other non-framework inhibitory KIR genes were represented at higher percentage and ranged from 57% to 80% in the chosen population which would suggest its higher survival adaptation. Interestingly, the majority of activating KIR genes were least represented and varied between 5% to 32.5% which is also in compliance with the survival adaptation of the chosen population. The carrier gene frequencies of KIRs were compared with the other populations' viz., Chinese Mongolian, Chinese Han, Greek and Brazilian data. The expected heterozygosity of KIR alleles and their rank in gene diversity among the population of Puttaparthi were also discussed.
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