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  • Title: Association of genetic variations in the vitamin D pathway with susceptibility to tuberculosis in Kazakhstan.
    Author: Sadykov M, Azizan A, Kozhamkulov U, Akilzhanova A, Yerezhepov D, Salfinger M, Chan CK.
    Journal: Mol Biol Rep; 2020 Mar; 47(3):1659-1666. PubMed ID: 31933264.
    Abstract:
    Tuberculosis (TB) poses an important health challenge and a significant economic burden for Kazakhstan and in Central Asia. Recent findings show a number of immunological related processes and host Mycobacterium tuberculosis defense are impacted by a variety of genes of the human host including those that play a part in the vitamin D metabolism. We investigated the genetic variation of genes in the vitamin D metabolic pathway of a cohort 50 TB cases in Kazakhstan and compared them to 34 controls living in the same household with someone infected with TB. We specifically analyzed 11 SNPs belonging to the following genes: DHCR7, CYP2R1, GC-1, CYP24A1, CYP27A1, CYP27B1, VDR and TNFα. These genes play a number of different roles including synthesis, activation, delivery and binding of the activated vitamin D. Our preliminary results indicate significant association of VDR (vitamin D receptor) SNPs (rs1544410, BsmI, with OR = 0.425, CI 0.221-0.816, p = 0.009 and rs731236, TaqI with OR = 0.443, CI 0.228-0.859, p = 0.015) and CYP24A1 (rs6013897 with OR = 0.436, CI 0.191-0.996, p = 0.045) with TB. Interaction of genetic variation of VDR and CYP24A1 may impact susceptibility to TB. The findings provided initial clues to understand individual genetic differences in relation to susceptibility and protection to TB.
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