PMID- 25405235 OWN - NLM STAT- MEDLINE DCOM- 20151109 LR - 20210130 IS - 1537-744X (Electronic) IS - 2356-6140 (Print) IS - 1537-744X (Linking) VI - 2014 DP - 2014 TI - Association of interleukin-18 gene polymorphism with susceptibility to visceral leishmaniasis in endemic area of Bihar, an Indian population. PG - 852104 LID - 10.1155/2014/852104 [doi] LID - 852104 AB - Interleukin-18 (IL-18) is a cytokine that mediates Th1 response by inducing interferon-gamma (IFN-gamma) production in T cells and natural killer cells. Genetic polymorphisms in the IL-18 gene have been found to be associated with its expression in cancer, tuberculosis, HBV infection, and various other diseases. Lower plasma level of IL-18 in visceral leishmaniasis (VL) patients might be associated with polymorphisms in the regulating or coding region of the gene. Three single nucleotide polymorphisms (SNPs), rs1946519 (-656 G/T) and rs187238 (-137 G/C) in the promoter region and rs549908 (+105 A/C) in the codon region, were genotyped in 204 parasitological confirmed VL patients and 267 controls with no past history of VL. For each locus, polymerase chain reaction (PCR) followed by restriction digestion was performed. IL-18 expression in peripheral blood mononuclear cells (PBMC) collected from VL patients and controls was measured by quantitative real-time RT-PCR. Distribution of G allele at position -656 (P < 0.0001) and double haplotypes GGC/GGA (P = 0.05) were found to be significantly associated with controls while genotypes TT (P < 0.0001) and single haplotypes TGA (P = 0.0002), with cases. The inheritance of G allele at the position -656 might be considered as a protective allele for VL. FAU - Kumar, Dinesh AU - Kumar D AD - Infectious Disease Research Laboratory, Department of Medicine, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh 221 005, India. FAU - Tiwary, Puja AU - Tiwary P AD - Infectious Disease Research Laboratory, Department of Medicine, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh 221 005, India. FAU - Chakravarty, Jaya AU - Chakravarty J AD - Infectious Disease Research Laboratory, Department of Medicine, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh 221 005, India. FAU - Sundar, Shyam AU - Sundar S AUID- ORCID: 0000-0001-9988-582X AD - Infectious Disease Research Laboratory, Department of Medicine, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh 221 005, India. LA - eng GR - P50 AI074321/AI/NIAID NIH HHS/United States GR - U19 AI074321/AI/NIAID NIH HHS/United States GR - 1P50AI074321/AI/NIAID NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20141022 PL - United States TA - ScientificWorldJournal JT - TheScientificWorldJournal JID - 101131163 RN - 0 (Interleukin-18) SB - IM MH - Adolescent MH - Adult MH - Alleles MH - Case-Control Studies MH - Child MH - *Endemic Diseases MH - Female MH - Gene Frequency MH - *Genetic Predisposition to Disease MH - Haplotypes MH - Humans MH - India/epidemiology MH - Interleukin-18/*genetics/immunology MH - Leishmania donovani/immunology MH - Leishmania infantum/immunology MH - Leishmaniasis, Visceral/*epidemiology/*genetics/immunology/parasitology MH - Leukocytes, Mononuclear/immunology/parasitology MH - Male MH - Open Reading Frames MH - *Polymorphism, Single Nucleotide MH - Promoter Regions, Genetic PMC - PMC4227453 EDAT- 2014/11/19 06:00 MHDA- 2015/11/10 06:00 PMCR- 2014/10/22 CRDT- 2014/11/19 06:00 PHST- 2014/07/30 00:00 [received] PHST- 2014/09/24 00:00 [revised] PHST- 2014/09/25 00:00 [accepted] PHST- 2014/11/19 06:00 [entrez] PHST- 2014/11/19 06:00 [pubmed] PHST- 2015/11/10 06:00 [medline] PHST- 2014/10/22 00:00 [pmc-release] AID - 10.1155/2014/852104 [doi] PST - ppublish SO - ScientificWorldJournal. 2014;2014:852104. doi: 10.1155/2014/852104. Epub 2014 Oct 22.