Journal
JOURNAL OF GASTROENTEROLOGY AND HEPATOLOGY
Volume 21, Issue 6, Pages 947-957Publisher
WILEY
DOI: 10.1111/j.1440-1746.2006.04231.x
Keywords
carbon tetrachloride; liver cirrhosis; oxidative stress; subcellular organelles; thioacetamide
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Background/Aims: Oxidative stress has been implicated in liver cirrhosis. Carbon tetrachloride and thioacetamide are the most widely used models to develop cirrhosis in rats and the present study compares oxidative stress in the liver induced by these compounds at different stages of cirrhosis development. Methods:Twice-weekly intragastric or intraperitoneal administration of carbon tetrachloride or thioacetamide, respectively, produced liver cirrhosis after 3 months. Histology, serum markers and hepatic hydroxy proline content confirmed the cirrhosis. Results: An increase in oxidative stress parameters was seen in mitochondria, peroxisomes and microsomes from the liver after carbon tetrachloride or thioacetamide treatment. Oxidative stress was more severe in carbon tetrachloride treated animals than thioacetamide. Mild oxidative stress was evident at 1 and 2 months of treatment and a significant increase was seen by 3 months of treatment with either compound. By this time, frank liver cirrhosis was also observed. Conclusions: These results suggest that evidence of oxygen free radicals is also found early in the development of fibrosis and cirrhosis in both models.
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