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Evidence-Based Complementary and Alternative Medicine
Volume 2018 (2018), Article ID 3080837, 10 pages
Research Article

Flavanones from Sedum sarmentosum Bunge Alleviate CCl4-Induced Liver Fibrosis in Rats by Targeting TGF-β1/TβR/Smad Pathway In Turn Inhibiting Epithelial Mesenchymal Transition

1The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou 310006, China
2Hangzhou Sanatorium of People’s Liberation Army, Hangzhou 310007, China
3Zhejiang Chinese Medical University, Hangzhou 310053, China

Correspondence should be addressed to Junjie Zhang

Received 12 September 2017; Revised 13 December 2017; Accepted 21 December 2017; Published 15 February 2018

Academic Editor: Ji H. Kim

Copyright © 2018 Yuancan Lin et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Objective. The aim of the study is to evaluate the therapeutic effects of flavanones from Sedum sarmentosum Bunge (FSSB) on CCl4-induced liver fibrosis in rats and the underlying mechanisms of action. Methods. An experimental model of liver fibrosis was established by subcutaneous injection of rats with CCl4 (40% v/v, 3 ml/kg) twice per week for six weeks. FSSB (100, 200, and 400 mg/kg) was intragastrically administered once per day consecutively for five weeks. Results. Our results showed that FSSB significantly attenuated CCl4-induced liver fibrosis as evidenced by reducing the elevated levels of serum biochemical indexes and improving the histological changes, including decreasing the elevation in serum alanine transaminase (ALT), aspartate transaminase (AST), hyaluronic acid (HA), and laminin (LN) level, reducing infiltration of inflammatory cells and collagen fibers in liver tissue. In addition, compared to the model group, FSSB markedly downregulated the protein and mRNA expression of TGF-β1, TGF-β1 receptors I and II (TβRI and TβRII), Smad2, Smad3, and Vimentin in liver tissue, at the mean time upregulating the expression of Smad7 and E-cadherin. Conclusions. The results suggest that FSSB alleviated CCl4-induced liver fibrosis probably through inhibition of TGF-β/TβR/Smad pathway in turn inhibiting epithelial mesenchymal transition.