PMID: 22338227Feb 18, 2012Paper

Hypomethylation of TNF-alpha gene promoter in the patients with acute-on-chronic hepatitis B liver failure

Zhonghua shi yan he lin chuang bing du xue za zhi = Zhonghua shiyan he linchuang bingduxue zazhi = Chinese journal of experimental and clinical virology
Li-Yan HanKai Wang

Abstract

The present study was designed to investigate the possible epigenetic alteration in the promoter of TNF-alpha in the patients with acute-on-chronic hepatitis B liver failure (ACHBLF). The methylation of TNF-alpha promoter in peripheral blood mononuclear cells (PBMCs) was measured by methylation specific PCR (MSP). The level of serum TNF-alpha was determined by enzyme-linked immunosorbent assay (ELISA). Model for End-stage Liver Disease (MELD) was performed for the evaluation of liver failure. The serum level of TNF-alpha in patients with ACHBLF(44.9260 +/- 26.48523) was higher than that in CHB (18.92505 +/- 9.04461) and healthy controls (11.9172 +/- 5.04612) (P < 0.05). Moreover, the serum TNF-alpha level was significantly decreased in methylation group as compared to unmethylaiton group in patients with ACHBLF (P < 0.05). MELD was not significantly different between methylated and unmethylated group of ACHBLF patients (P > 0.05). In addition, the serum level of TNF-alpha was found to be positively correlated with serum total bilirubin (r = 0.891, P < 0.01) and MELD score (r = 0.792, P < 0.01), but to be negatively correlated with prothrombin activity (r = - 0.511, P < 0.05) in patients with ACHBLF. The TNF-alpha methylation pa...Continue Reading

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