芪参益气滴丸抗大鼠肝纤维化的实验研究

目的研究芪参益气滴丸抗肝纤维化的作用机制。方法60只大鼠随机分为正常组、模型组、干预组、对照组及芪参益气滴丸组（简称治疗组）。采用二甲基亚硝胺腹腔内注射建立肝纤维化大鼠模型。按6期分类法评价各组肝纤维化程度。应用RT—PCR检测各组肝组织中Ⅰ、Ⅲ型胶原和1型组织性基质金属蛋白酶抑制物（TIMP-1）mRNA水平；应用免疫组织化学技术检测各组动物肝组织Ⅰ、Ⅲ型胶原和TIMP-1的表达。结果干预组与治疗组大鼠肝纤维化程度、肝组织中Ⅰ型与Ⅲ型胶原和TIMP—1mRNA水平及肝组织中Ⅰ型与Ⅲ型胶原和TIMP-1的阳性表达均分别较模型组与对照组显著减轻与下降。结论芪参益气滴丸能明显减轻肝组织病理改变和肝纤维化程度，抑制Ⅰ、Ⅲ胶原和TIMP-1的表达是其抗肝纤维化的部分机制。

Experimental Study on Effects of Qishen Yiqi Dropping Pills on Liver Fibrosis in Rats

OBJECTIVE: To investigate the anti-fibrotic effects of Qishen Yiqi Dropping Pills (QYDP) in rats with liver fibrosis (LF). METHODS: The LF model was induced by intraperitoneal injection with dimethylnitrosamine (DMN). Sixty Wistar rats were randomly divided into the normal group, the model group A, the QYDP intervened group , the model group B , and the QYDP treated group B. The degree of LF was evaluated according to 6-phase grading method. The expressions of collagen type I and III and tissue inhibitor of metalloproteinase-1 (TIMP-1) in liver tissues were determined by immunohistochemistry and the levels of collagen type I and III and TIMP-1 mRNA determined by semi-quantitive RT-PCR. RESULTS: Compared with the model group A and B, the degree of LF, the positive expressions of TIMP-1 mRNA and the content of collagen type I and III in liver tissue in the QYDP intervened and treated groups were significantly lower. CONCLUSION: QYDP could reduce the pathological changes and degree of LF in rats, which may be partially through inhibiting the expressions of collagen type I and III and TIMP-1.