首都医科大学学报 ›› 2007, Vol. 28 ›› Issue (2): 206-211.

• 中医药学研究 • 上一篇    下一篇

肾疏宁对肾小球硬化大鼠肾小球系膜细胞表型转化的作用

张丽芬1, 黄文政2   

  1. 1. 北京中医药大学东直门医院肾病内分泌科;2. 天津中医学院第一附属医院肾病科
  • 收稿日期:2007-01-16 修回日期:1900-01-01 出版日期:2007-04-24 发布日期:2007-04-24

Study of the Effects of Shenshuning Mixture on Phenotypic Modulation of Mesangial Cell in Glomerulosclerosis Rats

Zhang Lifen1, Huang Wenzheng2   

  1. 1. Department of Kidney Endocrine, Dongzhimen Hospital, Beijing University of Chinese Medicine;2. Department ofNephrology, The First Hospital Affiliated to Tianjin University of Chinese Medicine
  • Received:2007-01-16 Revised:1900-01-01 Online:2007-04-24 Published:2007-04-24

摘要:

目的 观察中成药复方肾疏宁对肾小球硬化模型大鼠肾小球系膜细胞表型转化的作用,探讨肾疏宁防治肾小球硬化的作用机制。方法 采用单侧肾切除并阿霉素尾静脉注射的方法建立大鼠肾小球硬化模型。用数字表法将SD大鼠随机分为假手术组、模型组、模型组+肾疏宁治疗组和模型组+苯那普利治疗组,共观察8周。用免疫组织化学染色法观察大鼠肾小球内α-平滑肌肌动蛋白(alpha smooth muscle actin,α-SMA)和转化生长因子-β1(transforming growth factor-β1,TGF-β1)的表达,用病理图像分析软件检测肾小球内α-SMA和TGF-β1染色阳性面积/肾小球毛细血管襻面积的改变。同时观察肾疏宁对肾小球硬化大鼠体质量、尿蛋白、血白蛋白、尿素氮、肌酐的影响。结果 假手术组大鼠肾小球内未见α-SMA表达,可见TGF-β1少量表达;模型组大鼠肾小球内α-SMA和TGF-β1显著表达,与假手术组比较,差异有统计学意义(P<0.01);血白蛋白、总蛋白明显降低,与假手术组相比,差异有统计学意义(P<0.01);尿蛋白、血尿素氮、肌酐明显升高,与假手术组相比,差异有统计学意义(P<0.01)。肾疏宁治疗组和苯那普利治疗组24h尿蛋白排泄量、血尿素氮、肌酐明显降低,与模型组相比,差异有统计学意义(P<0.01)。肾小球内α-SMA阳性面积/肾小球毛细血管襻面积和TGF-β1阳性面积/肾小球毛细血管襻面积显著减少,与模型组比较差异有统计学意义(P<0.01)。相关性分析显示α-SMA和TGF-β1呈显著正相关(r=0.637,P<0.01)。结论 肾疏宁可抑制肾小球系膜细胞表型转化,减少肾小球内固有细胞α-SMA和TGF-β1的表达,降低24h尿蛋白、血尿素氮和血肌酐,可能是防治肾小球硬化的部分作用机制。

关键词: 肾疏宁, 肾小球硬化, 表型转化, &alpha, -平滑肌肌动蛋白, 转化生长因子-&beta, 1

Abstract:

Objective To study the effect of Shenshuning mixture on phenotypic modulation of mesangial cell in glomerulosclerosis rats and its mechanism. Methods Rats models were induced and established by unilateral nephrectomy(Nx) and injection. Rats model of glomerulosclerosis was established by unilateral nephrectomy and intravenous injection of 0.2% Doxorubicin(5 mg/kg), rats were administered Shenshuning mixture 43.93 g/(kg·d), benazepril 10 mg/(kg·d), or distilled water respectively. Other 8 sham-operated rats as comparison. 8 weeks later, The expression of glomerularα-SMA and TGF-β1 were studied by immunohistochemical staining, and the ratio of positive area/total glomerular capillary area(SMA/GT and TGF/GT)were analyzed with image analysis software. the changes of weight, 24 h proteinuria, plasma albumin, total serum proteim and blood urine nitrogen, creatinine clearance rate were examined in each group. Results Immunohistochemical staining of glomeruli showed that expression of α-SMA and TGF-β1 in Shenshuning treated group and Benazepril treated group were significantly less than those of model group(P<0.01) and improved rats weights, attenuated 24 h urine protein, blood urine nitrogen and serum creatinine(P<0.01). The relatively analysis showed significant corelation of α-SMA and TGF-β1 factors(r=0.637, P<0.01). Conclusion Shenshuning mixture can improve glomerulosclerosis by inhibiting phenotypic modulation of mesangial cells and TGF-β1 expression, attenuate 24 h proteinuria excretion, blood urea nitrogen and creatinine.

Key words: Shenshuning, glomerulosclerosis, phenotypic modulation, &alpha, -smooth muscle actin, transforming growth factor-&beta, 1

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