PMID- 33412574 OWN - NLM STAT- MEDLINE DCOM- 20210511 LR - 20210511 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 16 IP - 1 DP - 2021 TI - Interleukin-18 and interferon-gamma single nucleotide polymorphisms in Egyptian patients with tuberculosis. PG - e0244949 LID - 10.1371/journal.pone.0244949 [doi] LID - e0244949 AB - BACKGROUND: Interleukin-18 (IL-18) and interferon-gamma (IFN-gamma) are cytokines of crucial role in inflammation and immune reactions. There is a growing evidence supporting important roles for IL-18 and IFN gamma in tuberculosis (TB) infection and anti-tuberculosis immunity. OBJECTIVE: To evaluate the role of polymorphisms in IL-18-607 and -137 and INF-gamma +874 in susceptibility to TB infection among Egyptian patients. METHODS: A case control study was conducted to investigate the polymorphism at IL-18-607, -137 and INF-gamma+874 by sequence specific primer-polymerase chain reaction (SSP- PCR) in 105 patients with pulmonary and extra pulmonary tuberculosis and 106 controls. RESULTS: A significant protective effect against TB was found in homozygous CC genotype at IL-18 -137G/C, in addition to a 7-fold risk with GG and GC genotypes in the recessive model. Apart from a decreased risk with the AC genotype, no association was detected between the susceptibility to TB and different genotypes or alleles at the IL-18 -607A/C site. The homozygous AA genotype in INF-gamma+874 showed a significant higher risk to TB than the homozygous TT or heterozygous AT genotypes with nearly a 2-fold risk of TB infection with the A allele. Regarding haplotype association, the GC haplotype was strongly associated with TB infection compared to other haplotypes. CONCLUSION: These findings suggest; for the first time in Egypt; a significant risk to TB infection with SNP at the IL-18-137G/C with no LD with SNP at the IL-18-607 site. The homozygous AA genotype in INF-gamma+874 showed a significant higher risk to TB than the homozygous TT or heterozygous AT genotypes. FAU - Hassuna, Noha A AU - Hassuna NA AUID- ORCID: 0000-0001-6702-2341 AD - Department of Medical Microbiology and Immunology, Faculty of Medicine, Minia University, Minia, Egypt. FAU - El Feky, Mohamed AU - El Feky M AD - Department of Medical Microbiology and Immunology, Faculty of Medicine, Assiut University, Assiut, Egypt. FAU - Hussein, Aliae A R Mohamed AU - Hussein AARM AD - Department of Chest Diseases and Tuberculosis, Faculty of Medicine, Assiut University, Assiut, Egypt. FAU - Mahmoud, Manal A AU - Mahmoud MA AD - Department of Chest Diseases and Tuberculosis, Faculty of Medicine, Assiut University, Assiut, Egypt. FAU - Idriss, Naglaa K AU - Idriss NK AD - Department of Medical Biochemistry, Faculty of Medicine, Assiut University, Assiut, Egypt. FAU - Abdelwahab, Sayed F AU - Abdelwahab SF AUID- ORCID: 0000-0002-9636-7485 AD - Department of Medical Microbiology and Immunology, Faculty of Medicine, Minia University, Minia, Egypt. AD - Division of Pharmaceutical Microbiology, Department of Pharmaceutics and Industrial Pharmacy, Taif College of Pharmacy, Taif University, Taif, Saudi Arabia. FAU - Ibrahim, Maggie A AU - Ibrahim MA AD - Department of Medical Microbiology and Immunology, Faculty of Medicine, Assiut University, Assiut, Egypt. LA - eng PT - Journal Article DEP - 20210107 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Antitubercular Agents) RN - 0 (Interleukin-18) RN - 82115-62-6 (Interferon-gamma) SB - IM MH - Adult MH - Alleles MH - Antitubercular Agents/therapeutic use MH - Case-Control Studies MH - Egypt MH - Female MH - Gene Frequency MH - *Genetic Predisposition to Disease MH - *Genotype MH - Humans MH - Interferon-gamma/*genetics MH - Interleukin-18/*genetics MH - Male MH - Middle Aged MH - Polymorphism, Single Nucleotide MH - Tuberculosis/drug therapy/*genetics MH - Young Adult PMC - PMC7790531 COIS- The authors have declared that no competing interests exist. EDAT- 2021/01/08 06:00 MHDA- 2021/05/12 06:00 PMCR- 2021/01/07 CRDT- 2021/01/07 20:19 PHST- 2020/08/31 00:00 [received] PHST- 2020/12/19 00:00 [accepted] PHST- 2021/01/07 20:19 [entrez] PHST- 2021/01/08 06:00 [pubmed] PHST- 2021/05/12 06:00 [medline] PHST- 2021/01/07 00:00 [pmc-release] AID - PONE-D-20-27317 [pii] AID - 10.1371/journal.pone.0244949 [doi] PST - epublish SO - PLoS One. 2021 Jan 7;16(1):e0244949. doi: 10.1371/journal.pone.0244949. eCollection 2021.