Bcl-2和Bax在缺血预处理保护海马神经元缺血再灌损伤中的作用

被引:7
作者
刘亚君 [1 ]
崔鹤 [2 ]
谢东萍 [1 ]
缪冰 [1 ]
刘克敬 [1 ]
陈连璧 [1 ]
机构
[1] 山东大学医学院生理学研究所
[2] 山东医学高等专科学校生理学教研室
关键词
基因,bcl-2; 基因,bax; 缺血预处理; 海马神经元; 脑缺血再灌损伤; 大鼠,Wistar;
D O I
暂无
中图分类号
R363 [病理生理学];
学科分类号
100104 ;
摘要
目的:探讨凋亡相关基因bcl-2和bax在缺血预处理(ischemic preconditioning,IPC)保护大鼠海马神经元缺血再灌损伤中的作用。方法:随机将动物分为IPC加缺血再灌组(IPC组)、单纯缺血再灌组(IR组)和对照组。观察海马CA1区神经元的组织形态学变化;TUNEL染色检测海马CA1区神经元凋亡;免疫组化测定海马CA1区神经元Bcl-2和Bax的表达。结果:IPC组海马CA1区神经元存活数显著多于IR组,凋亡细胞数显著低于IR组,Bcl-2呈强表达,Bax表达不明显。结论:IPC诱导Bcl-2表达上调和Bax蛋白表达下调,可抑制凋亡的发生,对海马CA1区神经元缺血再灌损伤起保护作用。
引用
收藏
页码:227 / 230
页数:4
相关论文
共 8 条
[1]  
Ionomycin-activated calpain triggers apoptosis:aprobable role for Bcl-2 family members. Gil-Parrado S,Fernandez-Montalvan A.Assfalg-MachleidtI,et al. Journal of Biological Chemistry . 2002
[2]  
Cellular neuroprotective mecha-nisms in cerebral ischemia:Bcl-2 family proteins and pro-tection of mitochondrial function. Ouyang YB,Giffiard RG. Cell Calcium . 2004
[3]  
Keeping killers on a tightleash:transcriptional and post-translational control of thepro-apoptoticactivity of BH3-only proteins. Puthalakath H,Strasser A. Cell Death and Differentiation . 2002
[4]  
Mitochondrial regulation of apoptotic cell death. Orrenius S. Toxicology Letters . 2004
[5]  
Ischemic precondition-ing preserves mitochondrial function after global cerebral is-chemia in rat hippocampus. Dave KR,Saul I,Busto R,et al. Journal of Cerebral Blood Flow and Metabolism . 2001
[6]  
Temporal profile ofneuronal damage in a model of transient forebrain ischemia. Pulsinelli WA,Brierley JB,Plum F. Annals of Neurology . 1982
[7]  
Limb ischemic precondi-tioning attenuates apoptosis of pyramidal neurons in the CA1hippocampus induced by cerebral ischemia-reperfusion inrats. Zhao HG,Li WB,Li QJ,et al. Acta Physiologica Sinica . 2004
[8]  
Differ-ent Expression Patterns of Bcl-2,Bcl-xl,and Bax ProteinsAfter Sublethal Forebrain Ischemia in C57Black/Crj6Mouse Striatum. Chaoran Wu,Hideyoshi Fujihara,Jian Yao,et al. Stroke . 2003