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Association of TNF-alpha promoter polymorphisms with the outcomes of hepatitis B virus infection in Chinese Han population.
- Source :
- Journal of Viral Hepatitis; Sep2006, Vol. 13 Issue 9, p618-624, 7p, 5 Charts
- Publication Year :
- 2006
-
Abstract
- Host genetic factors and environment factors including hepatitis B virus (HBV) genotypes are widely studied for the different outcomes of HBV infection. Recent studies suggest that tumour necrosis factor-alpha (TNF-alpha) plays a pivotal role in the viral clearance and host immune response to HBV, and the capacity for TNF-alpha production in individuals is influenced by a major genetic component. In this study, we aimed to explore whether the single-nucleotide polymorphisms (SNPs) of TNF-alpha promoter are associated with the outcomes of HBV infection in the Chinese Han population. One hundred and forty-three spontaneously recovered HBV subjects and 196 chronic hepatitis B patients were recruited in this case–control study in the Beijing area of China. Polymerase chain reaction–restriction fragment-length polymorphism (PCR-RFLP) and sequence-specific primer-PCR (SSP-PCR) were used to detect the SNPs of five sites in the TNF-alpha promoter (−238G/A, −308G/A, −857C/T, −863C/A, −1031T/C). The frequency distributions of genotypes and haplotypes in two groups were analysed by EPI and EH programs. The presence of the −238GG genotype was significantly correlated with persistence of HBV infection (OR = 4.08, P = 0.02), and −857TT genotype appeared in relation to the spontaneous clearance of HBV (OR = 0.47, P = 0.03). Frequency of haplotype GGCCT (−238/−308/−857/−863/−1031) in the chronic HB group was significantly lower than that in spontaneously recovered group ( P = 0.03), and frequencies of haplotypes GGCAT and GGTAT in the chronic HB group were significantly higher than those in the spontaneously recovered group ( P = 0.0001, P = 0.0004). In conclusion, TNF-alpha promoter polymorphisms are independently associated with different outcomes of HBV infection. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13520504
- Volume :
- 13
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- Journal of Viral Hepatitis
- Publication Type :
- Academic Journal
- Accession number :
- 21944076
- Full Text :
- https://doi.org/10.1111/j.1365-2893.2006.00731.x