TY - JOUR KW - Case-Control Studies KW - Cohort Studies KW - Cytokines KW - Genetic Predisposition to Disease KW - Genetic Variation KW - Haplotypes KW - Host-Pathogen Interactions KW - Humans KW - India KW - leprosy KW - Linkage Disequilibrium KW - Logistic Models KW - Mycobacterium leprae KW - Polymorphism, Single Nucleotide KW - Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization AU - Aggarwal S AU - Ali S AU - Chopra R AU - Srivastava AK AU - Kalaiarasan P AU - Malhotra D AU - Gochhait S AU - Garg V AU - Bhattacharya S N AU - Bamezai R AB -

BACKGROUND: Mycobacterium leprae is the etiologic pathogen that causes leprosy. The outcome of disease is dependent on the host genetic background.

METHODS: We investigated the association of 51 single-nucelotide polymorphisms (SNPs) in anti-inflammatory cytokines (IL-10, TGFB1, IL-6, IL-4, and IL-13) and receptors (IL-10RA, IL-10RB, TGFBR1, TGFBR2, IL-6R, IL-4R, IL-5RA, IL-5RB, and IL-13RA1) with susceptibility to leprosy in a case-control study from New Delhi in northern India. This was followed by replication testing of associated SNPs in a geographically distinct and unrelated population from Orissa in eastern India. The functional potential of SNPs was established with in vitro reporter assays.

RESULTS: Significant associations (P < .05) were observed for 8 polymorphisms (rs1800871, rs1800872, and rs1554286 of IL-10; rs3171425 and rs7281762 of IL-10RB; rs2228048 and rs744751 of TGFBR2; and rs1800797 of IL-6) with leprosy. This association was replicated for 4 SNPs (rs1554286 of IL-10, rs7281762 of IL-10RB, rs2228048 of TGFBR2, and rs1800797 of IL-6). The interaction study revealed a significantly greater association with leprosy risk than was obtained for any SNP individually.

CONCLUSIONS: This study provides an interesting insight on the cumulative polygenic host component that regulates leprosy pathogenesis.

BT - The Journal of infectious diseases C1 - http://www.ncbi.nlm.nih.gov/pubmed/21917900?dopt=Abstract C2 - UK CY - Oxford DA - 2011 Oct 15 DO - 10.1093/infdis/jir516 IS - 8 J2 - J. Infect. Dis. LA - eng N2 -

BACKGROUND: Mycobacterium leprae is the etiologic pathogen that causes leprosy. The outcome of disease is dependent on the host genetic background.

METHODS: We investigated the association of 51 single-nucelotide polymorphisms (SNPs) in anti-inflammatory cytokines (IL-10, TGFB1, IL-6, IL-4, and IL-13) and receptors (IL-10RA, IL-10RB, TGFBR1, TGFBR2, IL-6R, IL-4R, IL-5RA, IL-5RB, and IL-13RA1) with susceptibility to leprosy in a case-control study from New Delhi in northern India. This was followed by replication testing of associated SNPs in a geographically distinct and unrelated population from Orissa in eastern India. The functional potential of SNPs was established with in vitro reporter assays.

RESULTS: Significant associations (P < .05) were observed for 8 polymorphisms (rs1800871, rs1800872, and rs1554286 of IL-10; rs3171425 and rs7281762 of IL-10RB; rs2228048 and rs744751 of TGFBR2; and rs1800797 of IL-6) with leprosy. This association was replicated for 4 SNPs (rs1554286 of IL-10, rs7281762 of IL-10RB, rs2228048 of TGFBR2, and rs1800797 of IL-6). The interaction study revealed a significantly greater association with leprosy risk than was obtained for any SNP individually.

CONCLUSIONS: This study provides an interesting insight on the cumulative polygenic host component that regulates leprosy pathogenesis.

PB - Oxford University Press PP - Oxford PY - 2011 SP - 1264 EP - 73 T2 - The Journal of infectious diseases TI - Genetic variations and interactions in anti-inflammatory cytokine pathway genes in the outcome of leprosy: a study conducted on a MassARRAY platform. VL - 204 SN - 1537-6613 ER -