中药芪红合剂对肾间质纤维化模型大鼠肾组织中基质金属蛋白酶组织抑制剂-1表达影响.docVIP

中药芪红合剂对肾间质纤维化模型大鼠肾组织中基质金属蛋白酶组织抑制剂-1表达影响[摘要] 目的：探讨中药芪红合剂对肾间质纤维化模型大鼠肾组织中基质金属蛋白酶组织抑制剂-1（TIMP-1）表达的影响，及其对肾间质纤维化的作用机制。方法：采用单侧输尿管结扎(UUO)致肾间质纤维化的动物模型， 40只雄性Wistar大鼠随机分为4组：假手术组（A组）、手术模型组（B组）、芪红合剂组（C组）、依那普利组（D组）。术后14 d处死各组大鼠，收集血清测定血肌酐（Scr）、尿素氮（BUN）水平，取结扎侧肾组织分别用HE、Masson染色，采用免疫组化和原位杂交方法分别检测肾组织中基质金属蛋白酶组织抑制剂-1（TIMP-1）、纤维连接蛋白(FN)和 TIMP-1 mRNA的表达，并用计算机图像分析系统进行分析。结果：手术模型组大鼠肾组织中FN、TIMP-1和TIMP－1 mRNA的表达较假手术组显著升高，两治疗组较模型组明显降低。手术模型组大鼠血肌酐、尿素氮水平较假手术组明显增高，两治疗组较手术模型组显著下降。结论：中药芪红合剂可降低大鼠血尿素氮、血肌酐水平，并可通过抑制基质金属蛋白酶组织抑制剂-1（TIMP-1）和FN的表达，而起到减轻肾间质纤维化病变程度的作用，推测其抑制TIMP-1表达上调的作用可能是其抗肾小管间质纤维化的作用机制之一。 [关键词] 单侧输尿管结扎；肾间质纤维化；芪红合剂；基质金属蛋白酶组织抑制剂-1 [中图分类号] R365[文献标识码]A [文章编号]1673-7210（2008）10（a）-005-04 The effect of Astragalus and Safflower mixture on expression of tissue inhibitors of motalloprotenase in renal tubulointerstitial fibrosis in rats with Unilateral Ureteral Obstruction DONG Hua-ling1,MA Ha2 (1.Shanxi University of Traditional Chinese Medicine,Taiyuan030024,China;2.The Second Hospital of Shanxi Medical University,Taiyuan 030001,China) [Abstract] Objective:To investigate the theraputic effects and its mechanisms of Astragalus and Safflower mixture in rats with Unilatreal Ureteral Obstruction.Methods:Rat renal interstitial fibrosis model was produced by unilateral ureteral obstruction,40 Wistar male rats were randomly divided into four groups:sham group(A group),UUO group(B group), AS group(C group) and ACEI group(Dgroup). Sera and kidney tissues were collected from each group on the forteenth day.BUN and Scr were measured.It was carried out to measure the level of tubulointerstitial damage by Masson staining. The expression of TIMP-1 and fibronectin(FN) in kidneys was analyzed by immunohistochemical method. TIMP-1 mRNA was detected by in-situ hybridization method. Results:The expression of FN、TIMP-1、TIMP-1 mRNA and the renal interstitial fibrotic area were highter significantly than that in sham group. Compared with UUO group, those of the treatment groups decreased markedly. The