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山东大学学报(医学版)

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胰岛素样生长因子-1抗氧化损伤雪旺细胞凋亡的实验研究

丛丽,李振华,孙晋浩,暴丽华   

  1. 山东大学医学院解剖学教研室, 济南 250012
  • 收稿日期:2007-09-26 修回日期:1900-01-01 出版日期:2008-03-16 发布日期:2008-03-16
  • 通讯作者: 李振华

Anti-apoptosis effect of insulin-like growth factor-1 on oxidative injured Schwann cells

CONG Li, LI Zhen-hua, SUN Jin-hao, BAO Li-hua   

  1. Department of Anatomy, School of Medicine, Shandong University, Jinan 250012, China
  • Received:2007-09-26 Revised:1900-01-01 Online:2008-03-16 Published:2008-03-16
  • Contact: LI Zhen-hua

摘要: 目的探讨胰岛素样生长因子-1(IGF-1)对H2O2损伤的雪旺细胞(SCs)抗凋亡的作用。方法将培养的SCs分为H2O2处理组、H2O2加IGF-1保护组和正常对照组。检测各组细胞内超氧化物歧化酶(SOD)及丙二醛(MDA)的含量,丫叮橙(AO)染色观察细胞存活、凋亡情况,蛋白印迹(Western blot)法检测Bcl-2的表达水平。结果与正常组及保护组相比,H2O2处理组细胞具有典型的凋亡形态特征:核染色质浓染、边集,细胞体积缩小,细胞存活率降低;SOD含量明显减少(P<0.01),MDA含量明显增加(P<0.01),Bcl-2表达下调;而IGF-1保护组细胞存活率明显升高(P<0.01),SOD含量较损伤组增高(P<0.01),MDA含量较损伤组明显减少(P<0.01),Bcl-2表达明显上调。结论本实验结果提示IGF-1对氧化损伤的SCs具有保护作用。

Abstract: To investigate the anti-apoptosis effects of insulin-like growth factor-1 on oxidative injured Schwann cells (SCs). Methods Cultured SCs of rats were divided into the H2O2 group, the H2O2 and IGF-1 group, and the control group. The amounts of intracellular superoxide dismutase (hepatocuprein, SOD) and malondialdehyde(malonaldehyde, MDA)were determined by a biological chemical method, apoptosis was determined by acridine orange staining, and Bcl-2 expression was determined by Western blot. Results Activities of SCs in the oxidative injured group decreased compared with the control group. However, these changes were significantly reversed by the IGF-1 preconditioning. ConclusionIGF-1 has an anti-apoptosis effect on oxidative injured SCs.

Key words: Insulin-like growth factor-1, Schwann cells, Apoptosis

中图分类号: 

  • R322.85
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