Journal
WORLD JOURNAL OF GASTROENTEROLOGY
Volume 14, Issue 26, Pages 4120-4126Publisher
BAISHIDENG PUBLISHING GROUP INC
DOI: 10.3748/wjg.14.4120
Keywords
metabolic steatosis; hepatitis C virus steatosis; insulin resistance; fibrosis progression
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Steatosis is a common feature of many liver diseases' namely non-alcoholic steatohepatitis (NASH) and hepatitis C virus (HCV) infection, but the pathogenic mechanisms differ. Insulin resistance (IR), a key feature of metabolic syndrome, is crucial for NASH development, associated with many underlying genetically determined or acquired mitochondrial and metabolic defects and culminates to inflammation and progression to fibrosis. This may have potential implications for new drug therapy. In HCV-related disease, steatosis impacts both fibrosis progression and response to treatment. Steatosis in HCV-related disease relates to both viral factors (HCV genotype 3), and host factors (alcohol consumption, overweight, hyperlipidemia, diabetes). Among others, IR is a recognized factor. Hepatic steatosis is reported to be associated with disturbance in the signaling cascade of interferon and downregulation of its receptors. Thus, hepatic steatosis should not be considered a benign feature, but rather a silent killer. (C) 2008 The WJG Press. All rights reserved.
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