首都医科大学学报 ›› 2009, Vol. 30 ›› Issue (2): 133-136.

• 肾病学专题 • 上一篇    下一篇

内源性H2S对糖尿病肾病细胞外基质积聚的作用

黄雯, 李晓璐, 陈燊, 张红, 杨敏   

  1. 首都医科大学附属北京同仁医院肾内科
  • 收稿日期:2009-01-18 修回日期:1900-01-01 出版日期:2009-04-21 发布日期:2009-04-21
  • 通讯作者: 黄雯

Role of Endogenous H2S in the Accumulation of Extracellular Matrix of the Diabetic Nephropathy

HUANG Wen, LI Xiao-lu, CHEN Shen, ZHANG Hong, YANG Min   

  1. Department of Nephrology, Tongren Hospital, Capital Medical University
  • Received:2009-01-18 Revised:1900-01-01 Online:2009-04-21 Published:2009-04-21

摘要: 目的 观察糖尿病肾病(diabetic nephropathy,DN)大鼠肾组织中纤维黏连蛋白(fibronectin,FN)分布及含量变化,探讨内源性硫化氢(H2S)对糖尿病肾病细胞外基质积聚的作用。方法 雄性SD大鼠28只用数字表法随机分为对照组、DN组、H2S干预组和胱硫醚-γ裂解酶(cystathionine-γ-lyase,CSE)阻断剂组,每组7只。用免疫组织化学法及Western blotting免疫印迹法检测各组大鼠肾组织中FN分布及含量。结果 1)对照组大鼠FN主要分布于系膜基质和肾小囊壁;DN组和CSE阻断剂组大鼠肾小球基质中FN的分布增加;与DN组及CSE阻断剂组比较,H2S组大鼠FN的分布明显减少。2)与对照组比较,DN组大鼠FN的含量增加,Western blotting检测结果显示,DN组(48 896±779)与对照组(38 531±902)比较差异有统计学意义(P<0.01);与DN组、CSE阻断剂组比较,H2S组中FN的含量下降,Western blotting结果显示,H2S干预组(42 737±1 196)与DN组(48 896±779)、CSE阻断剂组(48 252±1 068)比较,差异有统计学意义(P<0.01)。结论 内源性H2S可抑制DN大鼠肾脏中细胞外基质的过度积聚,延缓糖尿病肾病的病理改变。

关键词: 硫化氢, 糖尿病肾病, 纤维黏连蛋白, Western blotting

Abstract: Objective To explore changes of fibronectin(FN) in the kidney tissues of diabetic nephropathy)(DN) rats, and to study the role of endogenous H2S in the pathological development of diabetic nephropathy. Methods Twenty-eight rats(male, Sprague-Dawley) were randomly divided into four groups: control group, diabetic nephropathy group, DN+NaHS(H2S donor) group and DN+DL-propargylglycine(PAG, H2S synthetase inhibitor) group. Relative location and expression of FN in kidney tissues were measured respectively by Western blotting and immunohistochemistry. Results FN was positive in both the intraglomerular mesangial region and the extracellular matrix(EMC) in kidney tissues of DN group, and its expression level increased significantly. Western blotting: DN group (48 896±779) vs control group(38 531±902), P<0.01. Compared with that of DN group and DN+PAG group, NaHS significantly inhibited the over-expression of FN, Western blotting: DN+NaHS group(42 737±1 196) vs DN group(48 896±779) and DN+PAG group(48 252±1 068), P<0.01. Conclusion Endogenous H2S can alleviate the pathological progression of DN by inhibiting the accumulation of ECM.

Key words: hydrogen sulfide, diabetic nephropathy, fibronectin, Western blotting

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