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  • Title: Hepatoprotective effect of Forsythiae Fructus water extract against carbon tetrachloride-induced liver fibrosis in mice.
    Author: Zhang Y, Miao H, Yan H, Sheng Y, Ji L.
    Journal: J Ethnopharmacol; 2018 May 23; 218():27-34. PubMed ID: 29474900.
    Abstract:
    ETHNOPHARMACOLOGICAL RELEVANCE: The fruit of Forsythia suspensa (Thunb.) Vahl, named Forsythiae Fructus (Lian-Qiao), is a well-known traditional Chinese medicine (TCM) used for clearing away heat and toxic material, eliminating the mass and relieving swelling. AIM OF THE STUDY: This study aims to observe the attenuation of the water extract of Forsythiae Fructus (FSE) on carbon tetrachloride (CCl4)-induced hepatic fibrosis in male C57BL/6 mice. MATERIALS AND METHODS: Hepatic fibrosis was induced in male C57BL/6 mice by intraperitoneal injection with 2 ml/kg CCl4 (mixed 1: 3 in olive oil) twice a week for 4 weeks. At the same time, the mice were orally given with FSE (1, 2 g/kg) every day for 4 weeks. Serum biochemical parameters, gene and protein expression related to liver fibrosis were analyzed. The contents of forsythiaside A and forsythin in FSE were measured by high-performance liquid chromatography (HPLC). RESULTS: Results of serum alanine/aspartate aminotransferase (ALT/AST) activity and liver histological evaluation both showed the protection of FSE against CCl4-induced liver injury. Further, the anti-fibrotic effects of FSE was evidenced by the results of Masson's trichrome and Sirius red staining, liver hydroxyproline content, and serum amounts of hyaluronic acid, laminin, collagen Ⅳ and type III procollagen (PCIII). FSE also reduced the expression of α-smooth muscle actin (α-SMA) in livers from CCl4-injured mice. Additionally, FSE decreased the increased hepatic expression of fibroblast-specific protein 1 (FSP1) and vimentin induced by CCl4 in mice. CONCLUSIONS: FSE attenuates CCl4-induced liver fibrosis in mice by inhibiting hepatic stellate cells (HSCs) activation, reducing hepatic extracellular matrix (ECM) disposition and reversing epithelial-mesenchymal transition (EMT).
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