Abstract Title:

Beneficial effects of histidine and carnosine on ethanol-induced chronic liver injury.

Abstract Source:

Food Chem Toxicol. 2008 May;46(5):1503-9. Epub 2008 Jan 25. PMID: 18222027

Abstract Author(s):

Wen-hu Liu, Te-chung Liu, Mei-chin Yin

Abstract:

Alleviative effects of histidine and carnosine in mice against ethanol-induced oxidative and inflammatory was examined. After chronic alcoholic liver injury was induced, histidine and carnosine at 0.5, 1, 2g/L were added to the drinking water for 3 weeks. Results showed that the post-intake of histidine or carnosine markedly decreased alanine aminotransferase and aspartate aminotransferase activities (P<0.05). Ethanol treatment increased malondialdehyde (MDA) level, decreased glutathione (GSH) content and catalase and glutathione peroxidase (GPX) activities, and increased cytochrome P450 2E1 (CYP2E1) activity in liver (P<0.05). The post-intake of histidine and carnosine significantly decreased MDA formations, increased GSH content, enhanced catalase and GPX activities, and suppressed CYP2E1 activity (P<0.05), in which the effects on catalase and CYP2E1 activities were dose-dependent (P<0.05). Ethanol treatment elevated hepatic levels of c-reactive protein (CRP), interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-alpha) (P<0.05), the post-intake of histidine and carnosine significantly and dose-dependently diminished the release of CRP, IL-6, and TNF-alpha (P<0.05). Ethanol treatment caused down-regulation in both catalase and GPX mRNA expression, and up-regulated both IL-6 and TNF-alpha mRNA expression (P<0.05). Histidine and carnosine post-treatments significantly and dose-dependently upregulated catalase mRNA, and down-regulated mRNA expression of IL-6 and TNF-alpha (P<0.05). Based on the observed anti-oxidative and anti-inflammatory effects, the supplement of histidine or carnosine might be helpful for the treatment of chronic alcoholic liver injury.

 

Study Type : Animal Study

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