银杏内酯B抗缺血神经元凋亡的预适应作用

被引:5
作者
季秋虹 [1 ]
吴小梅 [2 ]
李建成 [2 ]
朱俐 [2 ]
机构
[1] 南通大学附属医院神经内科
[2] 南通大学航海医学研究所
关键词
银杏内酯B; 缺血预适应; 神经元; 缺血; 凋亡;
D O I
暂无
中图分类号
R285.5 [中药实验药理];
学科分类号
1008 ;
摘要
目的研究银杏内酯B(Ginkgolide B,GB)对缺血引起的神经元凋亡的影响,并从预适应角度探讨其可能的机制。方法原代培养的小鼠皮层神经元,经过短时缺血预适应(1%O2,无糖DMEM)或GB预处理(120μmol/L,24h)后,再进行严重缺血损伤,通过MTT比色法观察细胞的活性,Hoechst 33342荧光染色检测细胞的凋亡;Western-blot分析磷酸化糖原合成酶激酶-3β(phosphorylated glycogen synthase kinase-3β,p-GSK-3β)和活化的Caspase-3蛋白表达量的变化。结果神经元缺血后活性下降,凋亡比率增高;缺血预适应或银杏内酯B预处理可提高缺血神经元p-GSK-3β的表达,抑制Caspase-3的活化,提高缺血神经元的活性,降低凋亡比率。结论银杏内酯B对缺血诱导的神经元凋亡具有拮抗作用,其作用机制与缺血预适应相似,两者均能提高p-GSK-3β的表达,抑制Caspase-3的活化,银杏内酯B对神经元可发挥药理性预适应作用。
引用
收藏
页码:520 / 524
页数:5
相关论文
共 6 条
[1]   Erythropoietin prevents PC12 cells from 1-methyl-4-phenylpyridinium ion-induced apoptosis via the Akt/GSK-3β/caspase-3 mediated signaling pathway [J].
Wu, Yan ;
Shang, You ;
Sun, Shenggang ;
Liang, Huifang ;
Liu, Rengang .
APOPTOSIS, 2007, 12 (08) :1365-1375
[2]  
Elevated levels of DNA repair enzymes and antioxidative enzymes by ( )-catechin in murine microglia cells after oxidative stress[J] . Qing Huang,Li-Jun Wu,Shin-Ichi Tashiro,Satoshi Onodera,Takashi Ikejima.Journal of Asian Natural Products Research . 2006 (1-2)
[3]  
Dieldrin induces apoptosis by promoting caspase-3-dependent proteolytic cleavage of protein kinase Cδ in dopaminergic cells: relevance to oxidative stress and dopaminergic degeneration[J] . M. Kitazawa,V. Anantharam,A.G. Kanthasamy.Neuroscience . 2003 (4)
[4]   Ischemic tolerance and endogenous neuroprotection [J].
Dirnagl, U ;
Simon, RP ;
Hallenbeck, JM .
TRENDS IN NEUROSCIENCES, 2003, 26 (05) :248-254
[5]  
Cognitive and Other Behavioral Effects of EGb 761? in Animal Models[J] . W. Müller,S. Chatterjee.Pharmacopsychiatry . 2003 (S 1)
[6]  
Erythropoietin is a paracrine-mediator of Ischemic tolerance in the brain:Evidence from an in vitro model. Ruscher K,Freyer D,Karsch M,et al. The Journal of Neuroscience . 2002