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Hepatic Stimulator Substance Alleviates Toxin-Induced and Immune-Mediated Liver Injury and Fibrosis in Rats.

Authors: Yi, X  Song, M  Yuan, Y  Zhang, X  Chen, W  Li, J  Tong, M  Liu, G  You, S  Kong, X 
Citation: Yi X, etal., Dig Dis Sci. 2012 Apr 27.
Pubmed: (View Article at PubMed) PMID:22539040
DOI: Full-text: DOI:10.1007/s10620-012-2168-6

BACKGROUND: Liver fibrosis is a common scarring response to chronic liver injury. It is a precursor to cirrhosis and liver carcinoma. Hepatic stimulator substance (HSS), a known liver-specific but species-nonspecific growth factor, has been shown to protect hepatocytes from various toxins. METHODS: We have investigated the effects of HSS therapy on carbon tetrachloride (CCl(4))-induced and porcine-serum-mediated hepatic injury and fibrosis. We hypothesize that HSS might attenuate liver injury and fibrosis by suppressing oxidative stress, down-regulating profibrogenic factors, and blocking HSCs activation. RESULTS: This report demonstrated that HSS therapy diminished alpha-smooth muscle actin expression, decreased intrahepatic reactive oxygen species (ROS) level, and down-regulated transforming growth factor (TGF)-beta1, platelet-derived growth factor (PDGF)-BB, and tissue inhibitor of metalloproteinase (TIMP)-1 expression. In addition, HSS treatment significantly protected the liver from injury by improving liver function tests and histological architecture of the liver. CONCLUSIONS: These results provided novel insights into the mechanisms of HSS in the protection of the liver. Our results suggested that HSS might be a therapeutic antifibrotic agent for the treatment of liver fibrosis.

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CRRD Object Information
CRRD ID: 6482830
Created: 2012-05-07
Species: All species
Last Modified: 2012-05-07
Status: ACTIVE



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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.