Objective
To explore the preventive effects of Jiawei Yinchen Sini Decoction on the gene expression of Smad7 and Collagen,Ⅲ in mice with hepatic fibrosis.
Methods
48 male ICR mice were randomly divided into normal group, model group, colchicine group, JWYSN high dose group, medium dose group and low dose group, with 8 mice in each group. The hepatic fibrosis model was established by intraperitoneal injection of 30% CCl4( 1. 5 mg/kg, dissolved in olive oil). At the same time, the mice were treated with intragastric adminstration of drugs. After 14 days, the liver index was calculated; the levels of serum hyaluronic acid( HA) and laminin protein( LN) were detected by Enyme-linked immunosorbent assay; the pathological fibrosis change was observed by performing HE staining and was made a grading of hepatic fibrosis. mRNA expression of Smad7 and Collagen I, Ⅲ were detected by RT-q PCR analysis.
Results
(1) Compared with model group, the liver index and levels of HA and LN in JWYSN medium dose group and low dose group were obviously decreased( P < 0. 05).( 2) The pathological results showed that, compared with model group, the hepatic fibrosis were significantly relief in different dose of JWYSN group( P < 0. 05).( 3) The expressions of Collagen Ⅰ mRNA in each treatment group were significantly lower than model group( P < 0. 05); In addition to JWYSN high dose group, the expressions of Smad7 mRNA in each treatment group increased significantly( P < 0. 05); In addition to JWYSN low dose group, the expression of CollagenⅢmRNA in each treatment group decreased significantly( P < 0. 05).
Conclusion
Jiawei Yinchen Sini decoction can up-regulate the expressions of Smad7 mRNA and inhibit expressions of mRNA and CollagenⅢmRNA in mice with hepatic fibrosis,thus attenuate the development of hepatic fibrosis.