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糖基化终末产物对大鼠肾系膜细胞胰岛素样生长因子-1表达的影响

苗春生,于晓艳,李才,石艳   

  1. 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:2006-05-29 修回日期:1900-01-01 出版日期:2007-01-28 发布日期:2007-01-28
  • 通讯作者: 李才

Effects of advanced glycation end products on insulin-like growth factor-1 expression in rat mesangial cells

MIAO Chun-sheng, YU Xiao-yan, LI Cai,SHI Yan   

  1. Department of Pathology, Institute of Frontier Medical Sciences,Jilin University, Changchun 130021, China
  • Received:2006-05-29 Revised:1900-01-01 Online:2007-01-28 Published:2007-01-28
  • Contact: LI Cai

摘要: 目的:观察糖基化终末产物(AGEs)对大鼠肾系膜细胞胰岛素样生长因子-1 (IGF -1)表达的影响及其与细胞外基质(ECM)成分含量的关系。方法:体外培养正常大鼠肾系膜细胞,分别用不同浓度(0、12.5、25.0、50.0、100.0和200.0 mg•L-1)糖基化牛血清白蛋白(AGEs)处理,相应浓度未经糖化的牛血清白蛋白(BSA)作为对照,ELISA法检测纤维连接蛋白(FN)和Ⅳ型胶原及IGF-1含量。结果:与相应浓度的BSA组比较,12.5~200.0 mg•L-1 AGEs组FN含量明显升高(P<0.01),100.0~200.0 mg•L-1 AGEs组Ⅳ型胶原含量明显升高(P<0.01),25.0~100.0 mg•L-1 AGEs组IGF-1蛋白含量明显升高(P<0.01),200.0 mg•L-1 AGEs组IGF-1含量无明显变化。结论:AGEs引起的细胞外基质积聚可能在一定范围内与IGF-1上调有关。

关键词: 糖基化终产物, 高级, 胰岛素样生长因子-, 糖尿病肾病

Abstract: To investigate the effects of advanced glycation end products (AGEs) on insulin-like growth factor-1(IGF-1) expression in rat mesangial cells and its relationship with extracellular matrix(ECM) accumulation. Methods Rat mesangial cells were treated with AGEs-modified bovine serum albumin with different concentrations(0, 12.5 , 25.0 , 50.0 , 100.0 and 200.0 mg•L-1), corresponding concentration native bovine serum albumin (BSA) as control. Fibrinectin, collagen Ⅳ and IGF-1 protein contents were detected by ELISA. Results Compared with those of corresponding concentration BSA group, FN contents in 12.5-200.0 mg•L-1 AGEs group increased significantly(P<0.01); collagen IV contents in 100.0-200.0 mg•L-1 AGEs group increased significantly(P<0.01); IGF-1 contents in 25.0-100.0 mg•L-1 AGEs group increased significantly(P<0.01); and 200.0 mg•L-1 AGEs showed no promotion on IGF-1 expression. ConclusionECM accumulation induced by AGEs is relevant to IGF-1 in a certain range

Key words: glycosylation end products, advanced, insulin-like growth factor-Ⅰ, diabetic nephropathies

中图分类号: 

  • R587.2