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PPAR-γ激活对糖基化终末产物引起的大鼠肾系膜细胞外基质积聚的影响

李鸿雁1,于晓艳2,李 才2*,李相军2   

  1. 1. 吉林大学公共卫生学院营养与食品卫生学教研室,吉林 长春 130021;2. 吉林大学再生医学科学研究所病理研究室,吉林 长春 130021
  • 收稿日期:2005-01-06 修回日期:1900-01-01 出版日期:2005-09-28 发布日期:2005-09-28
  • 通讯作者: 李 才

Effects of PPAR-γ activation on rat mesangial cell extracellular matrix accumulation induced by advanced glycation end products

LI Hong-yan1, YU Xiao-yan2, LI Cai2*, LI Xiang-jun2   

  1. 1. Department of Nutrition and Food Hygiene, School of Public Health, Jilin University, Changchun 130021, China;2. Department of Pathology, Institute of Frontier Medical Sciences, Jilin University, Changchun 130021, China
  • Received:2005-01-06 Revised:1900-01-01 Online:2005-09-28 Published:2005-09-28
  • Contact: LI Cai

摘要: 目的:观察过氧化物酶体增殖体激活受体-γ(PPAR-γ)激活对糖基化终末产物(AGEs)引起的大鼠肾系膜细胞细胞外基质积聚的影响。方法:体外培养正常大鼠肾系膜细胞,分别用糖化牛血清白蛋白(AGEs)及未经糖化的牛血清白蛋白(BSA)处理,检测不同浓度AGEs(0、12.5、25、50、100及200 mg·L-1)对肾系膜细胞条件培养基纤维连接蛋白(FN)、Ⅳ型胶原含量的影响及不同浓度罗格列酮(0、1.25、2.5、5及10 mmol·L-1)对AGEs(100 mg·L-1)引起的Ⅳ型胶原及FN积聚的影响。ELISA测定肾系膜细胞条件培养基中FN和Ⅳ型胶原蛋白含量,逆转录聚合酶链式反应(RT-PCR)检测系膜细胞PPAR-γ mRNA的表达。结果:大鼠系膜细胞有PPAR-γ mRNA的表达;与相应浓度的BSA比较,AGEs(12.5~200 mg·L-1)可不同程度地刺激系膜细胞FN和Ⅳ型胶原的产生(P<0.01);给予PPAR-γ激活剂(1.25~10 mmol·L-1)可明显减轻AGEs(100 mg·L-1)引起的Ⅳ型胶原含量增加(P<0.01)。结论:PPAR-γ激活可以明显减轻AGEs引起的Ⅳ型胶原积聚。

关键词: 糖尿病肾病, 糖基化终产物, 高级, 肾小球膜, 细胞外基质

Abstract: Objective To investigate the role of peroxisome proliferator-activated receptor-γ(PPAR-γ) activation in rat mesangial cell extracellular matrix(ECM)accumulation induced by advanced glycation end products (AGEs). Methods Rat mesangial cells were treated with AGE-modified bovine serum albumin (AGEs) or native bovine serum albumin (BSA). The effects of AGEs (0,12.5,25,50,100 and 200 mg·L-1) on mesangial cells fibronectin and collagen Ⅳ protein contents and the role of PPAR-γ activation in rat mesangial cells ECM accumulation induced by AGEs (100 mg·L-1) were investigated. Fibronectin, collagen Ⅳ protein contents were detected by ELISA and PPAR-γ mRNA was analyzed by reverse transcriptase-polymerase chain reaction (RT-PCR). Results Mesangial cells expressed PPAR-γ mRNA. Compared with respective BSA groups, AGEs(12.5-200 mg·L-1)increased fibronectin and collagen Ⅳ protein contents of rat mesangial cells. PPAR-γ activation (1.25-10 mmol·L-1) could ameliorate collagen Ⅳ protein increasing induced by AGEs (100 mg·L-1) in mesangial cell medium. Conclusion PPAR-γ activation can ameliorate mesangial cells collagen Ⅳ increasing induced by AGEs.

Key words: diabetic nephropathies, glycosylation end products, advanced, glomerular mesangium, extracellular matrix

中图分类号: 

  • R587.2