Genetic variants in IL4RA, IL6, and IL12B genes and susceptibility to hepatitis B and C virus infections among Iraqi patients.

Autor: Al-Saffar OB; Biology Department, Madenat Al-elem University College, Baghdad, Iraq., Ad'hiah AH; Tropical-Biological Research Unit, College of Science, University of Baghdad, Baghdad, Iraq.
Jazyk: angličtina
Zdroj: Journal of medical virology [J Med Virol] 2020 Dec; Vol. 92 (12), pp. 3448-3458. Date of Electronic Publication: 2020 Jul 17.
DOI: 10.1002/jmv.26297
Abstrakt: Hepatitis B and C viruses (HBV and HCV) are common causative pathogens of viral hepatitis. Progression of both infections is determined by virus- and host-related factors. Cytokines are important host genetic factors that may have a predisposing role in HBV and HCV infections. This case-control study evaluated the genetic association of IL4RA +1902 (rs1801275), IL6 -174 (rs1800795), IL6 -597 (rs1800797), and IL12B -1188 (rs3212227) variants with chronic HBV and HCV infections among Iraqi patients. A total of 220 viral hepatitis patients were enrolled in the study (113 HBV and 107 HCV), together with 141 healthy subjects. Sequence-specific primer polymerase chain reaction assay was the genotyping method. Results revealed that under a dominant genetic model, IL6 -174 variant was significantly associated with HBV infection, whereas no association with the HCV risk was reported. However, the risk for both infections was markedly associated with IL6 -597 variant under recessive, dominant, and codominant genetic models. Estimation of IL6 -174 -IL6 -597 haplotypes depicted that G-A haplotype was significantly associated with an increased risk to develop HBV infection, whereas a significantly decreased risk was associated with G-G and C-G haplotypes. For HCV, G-G and C-A haplotypes were significantly associated with risk of HCV infection. IL4RA +1902 and IL12B -1188 variants showed no association with HBV or HCV risk. Analysis of variance revealed no significant association between genotypes of the four determined single-nucleotide polymorphisms and HBV or HCV viral load. In conclusion, the study supports the concept that IL6 -597 variant is associated with susceptibility to HBV and HCV infections among Iraqis. The risk of HBV infection is further associated with IL6 -174 variant.
(© 2020 Wiley Periodicals LLC.)
Databáze: MEDLINE
Externí odkaz: