天然产物研究与开发 ›› 2014, Vol. 26 ›› Issue (12): 1939-1943.

所属专题: No.2

• 研究论文 • 上一篇    下一篇

天然牛磺酸对肝硬化大鼠MMP-9、Integrin-β1表达的调控

文彬,陈然,彭佩纯,邓鑫*   

  1. 广西中医药大学附属瑞康医院,南宁 530011
  • 出版日期:2014-12-31 发布日期:2015-01-09

Regulation Effect of Natural Taurine On MMP-9, Integrin-β1 Expression In Rats With Liver Cirrhosis

WEN Bin, CHEN Ran, PENG Pei-chun, DENG Xin*   

  1. Department of Gastroenterology,The Affiliated Ruikang Hospital of Guangxi Traditional Chinese Medical University,Nanning 530001,China
  • Online:2014-12-31 Published:2015-01-09

摘要: 天然牛磺酸广泛存在于海洋生物中,研究发现具有一定抗纤维化作用,基质金属蛋白酶(MMP-9)、整合素-β1(Integrin-β1)与肝纤维化密切相关,实验中通过给予肝硬化大鼠不同剂量天然牛磺酸(0.3、0.6、1.2 g/kg·d),采用放射免疫法检测血清肝纤四项含量;实时荧光定量PCR检测大鼠肝组织MMP-9、Integrin-β1 mRNA表达,免疫蛋白印迹法(Western blot)检测相应蛋白的表达。结果表明,肝硬化大鼠MMP-9、Integrin-β1 mRNA及蛋白表达显著升高,天然牛磺酸能显著减少模型大鼠血清肝纤四项水平,降低MMP-9、Integrin-β1 mRNA及相关蛋白表达,以0.6 g/kg·d剂量组效果最佳。天然牛磺酸下调肝硬化大鼠MMP-9 和Integrin-β1的表达,与其发挥肝保护作用密切相关。

关键词: 肝硬化, 天然牛磺酸, 基质金属蛋白酶, 整合素-&beta, 1, 细胞外基质

Abstract: Natural taurine widely exists in marine organisms,and it has been reported to exert certain anti-fibrosis activity.Matrix metalloproteinase(MMP-9),Integrin-β1 is closely related to liver fibrosis.In this study,liver cirrhosis rats were treated withdifferent doses of natural taurine(0.3,0.6,1.2 g/kg·d).Fourindices of serum liver fibrosis were analyzed by radioimmunoassay method.MMP-9,Integrin-β1 mRNA expression levels were detected in liver tissue through real-time PCR and related protein levels were determined by Western-blot analysis.The results showed that natural taurine can significantly reduce four indices of serum liver fibrosis in cirrhotic rats.In addition,natural taurinemarkedly reverted the elevated levels of MMP-9,integrin-β1 mRNA and related protein.The 0.6 g/kg·ddosage group showed the highest activity.These results indicated that natural taurine downregulating of MMP-9 and Integrin-β1 expression was closely associated with its protective effects against liver cirrhosis in rats.

Key words: cirrhosis, naturaltaurine, MMP-9, integrin-&beta, 1, ECM

中图分类号: 

R34