实用肝脏病杂志 ›› 2015, Vol. 18 ›› Issue (5): 525-529.doi: 10.3969/j.issn.1672-5069.2015.05.019

• 实验性肝炎 • 上一篇    下一篇

马洛替酯对肝纤维化大鼠肝组织Smads蛋白表达的影响*

黄红,康毅,黄旭平,王晨晓,罗伟生   

  1. 530001南宁市 广西中医药大学2013级中医内科学专业硕士研究生班
  • 收稿日期:2015-01-10 出版日期:2015-09-10 发布日期:2016-02-18
  • 通讯作者: 罗伟生,E-mail:wsluo1958@163.com E-mail:393163806@qq.com
  • 作者简介:黄红,女,硕士研究生。研究方向:中医药抗肝纤维化的基础与临床研究。E-mail:393163806@qq.com
  • 基金资助:
    国家自然科学基金资助项目(No.81360530)

Effect of malotilate on expression of Smads protein in rats with dimenthylnitrosamine-induced hepatic fibrosis

Huang Hong,Kang Yi,Huang Xuping,et al.   

  1. Guangxi University of Chinese Medicine,Nanning 530001,China
  • Received:2015-01-10 Online:2015-09-10 Published:2016-02-18

摘要: 目的 观察马洛替酯对二甲基亚硝胺(DMN)诱导的肝纤维化大鼠肝组织Smads信号通路中关键信号传导分子Smad3、smad4和Smad7蛋白表达的影响,探讨其抗肝纤维化的作用机制。方法 将60只SD大鼠随机分成对照组、模型组、秋水仙碱组和马洛替酯组各15只。在造模的同时给药灌胃。6 w后,取肝组织,进行病理学观察;采用实时荧光定量PCR法和Western Blot 法检测 Smad3、smad4、Smad7 mRNA和蛋白表达。结果 对照组大鼠肝组织Smad3、smad4 mRNA和蛋白表达分别为(0.38±0.09)、(0.29±0.08)和(0.16±0.05)、(0.16±0.07),显著低于模型组[分别为(0.84±0.08)、(0.76±0.11)和(1.01±0.12)、(0.94±0.11),P<0.05];对照组肝组织Smad7 mRNA和蛋白分别为(0.73±0.14)和(0.44±0.15),模型组Smad7 mRNA和蛋白[(0.22±0.08)和(0.17±0.08),P<0.05]表达明显减弱;与模型组比较,马洛替酯组肝组织smad3、smad4 mRNA和蛋白表达分别为[(0.52±0.10)、(0.40±0.10)和(0.51±0.08)、(0.41±0.09),P<0.05)],马洛替酯组肝组织Smad7 mRNA和蛋白分别为(0.48±0.09)和(0.39±0.10),表达有所升高 (P<0.05)。结论 马洛替酯可明显抑制DMN诱导的大鼠肝脏损伤,改善肝纤维化程度,其作用机制可能与下调Smad3和smad4表达,上调Smad7表达有关。

关键词: 肝纤维化, 马洛替酯, Smad3, smad4, Smad7, 大鼠

Abstract: Objective To observe the effect of malotilate on the expression of the key signal conducting molecule smad3,smad4 and smad7 in rats with dimenthylnitrosamine(DMN)-induced hepatic fibrosis. Methods Sixty SD male rats were randomly divided into four groups,e.g. control,model,malotilate-and colchicine-treated group,with 15 in each. The hepatic fibrosis model was made by intraperitoneal injection of DMN,and rats were administered by gavage for 6 weeks. The Smad3,Smad4,Smad7 mRNA and their proteins were measured by real time PCR and Western blot,respectively. Results The Smad3 and smad4 mRNA and Smad3 and smad4 protein were(0.38±0.09),(0.29±0.08) and (0.16±0.05),(0.16±0.07)in the control,obviously decreased than in model group [0.84±0.08),(0.76±0.11) and (1.01±0.12),(0.94±0.11),P<0.05];the Smad7 mRNA and its protein in control group were(0.73±0.14)and (0.44±0.15),much higher than in the model group [(0.22±0.08)and (0.17±0.08),P<0.05];the Smad3 and smad4 mRNA and their proteins in malotilate group were [(0.52±0.10),(0.40±0.10) and (0.51±0.08),(0.41±0.09),significantly lower than in model P<0.05] and the Smad7 mRNA and its protein in malotilate group were (0.48±0.09) and (0.39±0.10),significantly increased than in the model (P<0.05). Conclusions Malotilate can inhibite hepatic fibrosis induced by DMN in rats,and the mechanism may be related to the down-regulation of Smad3 and smad4 and up-regulation of Smad7 expression.

Key words: Hepatic fibrosis, Malotilate, Smad3, smad4, Smad7, Rats