IFNG and IFNGR1 gene polymorphisms and susceptibility to post-kala-azar dermal leishmaniasis in Sudan - PubMed (original) (raw)

IFNG and IFNGR1 gene polymorphisms and susceptibility to post-kala-azar dermal leishmaniasis in Sudan

M A Salih et al. Genes Immun. 2007 Jan.

Abstract

Post-kala-azar dermal leishmanaisis (PKDL) in Sudan is associated with elevated interferon-gamma (IFN-gamma). To study interferon-gamma pathways in PKDL, we genotyped 80 trios from the Masalit ethnic group for polymorphisms at -470 ins/delTT, -270T/C, -56T/C and +95T/C in IFNGR1 and at -179G/A and +874T/A in IFNG. No associations occurred at IFNG. Global association with haplotypes comprising all four markers at IFNGR1 (chi(2)(10df)=21.97, P=0.015) was observed, associated with a significant (chi(2)(1df)=4.54, P=0.033) bias in transmission of the haplotype insTT T T T and less (chi(2)(1df)=5.59, P=0.018) than expected transmission of insTT C C C. When compared with data on malaria associations from Gambia, the results suggest a complex pattern of haplotypic variation at the IFNGR1 promoter locus associated with different infectious disease in African populations that reflect the complex roles of IFN-gamma in parasite killing versus inflammation and pathogenesis.

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References

    1. Zijlstra EE, el-Hassan AM. Leishmaniasis in Sudan. Post kala-azar dermal leishmaniasis. Trans R Soc Trop Med Hyg. 2001;95(Suppl 1):S59–76. - PubMed
    1. Murray HW, Rubin BY, Rothermel CD. Killing of intracellular Leishmania donovani by lymphokine-stimulated human mononuclear phagocytes. Evidence that interferon-gamma is the activating lymphokine. J Clin Invest. 1983;72:1506–10. - PMC - PubMed
    1. Ismail A, El Hassan AM, Kemp K, et al. Immunopathology of post kala-azar dermal leishmaniasis (PKDL): T-cell phenotypes and cytokine profile. J Pathol. 1999;189:615–22. - PubMed
    1. Gasim S, Elhassan AM, Kharazmi A, et al. The development of post-kala-azar dermal leishmaniasis (PKDL) is associated with acquisition of Leishmania reactivity by peripheral blood mononuclear cells (PBMC) Clin Exp Immunol. 2000;119:523–9. - PMC - PubMed
    1. Newport MJ, Huxley CM, Huston S, et al. A mutation in the interferon-g-receptor gene and susceptibility to mycobacterial infection. N Engl J Med. 1996;26:1941–1949. - PubMed

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