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  • Title: Potential protective effects of a traditional Chinese herb, Litsea coreana Levl., on liver fibrosis in rats.
    Author: Huang C, Ma T, Meng X, Lv X, Zhang L, Wang J, Li J.
    Journal: J Pharm Pharmacol; 2010 Feb; 62(2):223-30. PubMed ID: 20487202.
    Abstract:
    OBJECTIVES: It was found that total flavonoids from Litsea coreana Levl. (TFLC), which is a traditional Chinese medicine, had a preventive effect against hepatic steatosis in our previous study. This study was designed to evaluate whether TFLC could improve liver fibrosis in rats. METHODS: The liver fibrosis model rats were treated with composite factors of high-fat emulsion (10 ml/kg) via gavage accompanied by a subcutaneous injection of low-dose CCl(4). Thirty rats were given composite factors plus TFLC (100, 200, 400 mg/kg), respectively, for 8 weeks. KEY FINDINGS: The results showed that TFLC (200 and 400 mg/kg) treatment significantly reduced the elevation of liver index (liver weight/body weight) and spleen index (spleen weight/body weight), alanine transaminase, aspartate aminotransferase, hyaluronic acid, laminin, procollagen III N-terminal peptide, procollagenase IV and hydroxyproline. In addition, TFLC treatment improved the morphologic changes of hepatic fibrosis, suppressed expression of alpha-smooth muscle actin, collagen I, transforming growth factor (TGF)-beta1 and TGFbeta receptor (TGFbetaR)1, and increased peroxisome proliferator-activated receptor-gamma expression in the liver of hepatic fibrosis rats. CONCLUSIONS: In conclusion, TFLC is able to ameliorate liver injury and protect rats from liver fibrosis. This process may be related to inhibiting the expression of transforming growth factor-beta1 and increasing the expression of peroxisome proliferator-activated receptor-gamma.
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