Protective Effect of Tetrandrine against Excitatory Amino Acids induced Neuronal Injury in Cortical Culture

被引:0
|
作者
车建途
张均田
陈飞松
屈志炜
机构
[1] 北京中医研究所药理实验室
[2] 中国医学科学院协和医科大学药物研究所药理二室
关键词
粉防己碱; 大脑皮层神经元; 兴奋性氨基酸;
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
兴奋性氨基酸类神经毒剂与粉防己碱(tetrandrine,Tet)共同作用于原代培养胎鼠大脑皮层神经元24小时,发现107,106mol·L1Tet明显降低50μmol·L1谷氨酸(glutamate,Glu),300μmol·L1βNmethylaminoLalanine(BMAA,NMDA受体激动剂)和20μmol·L1βNoxalylaminoLalanine(BOAA,nonNMDA受体激动剂)导致的培养液乳酸脱氢酶(lactatedehydrogenase,LDH)活性的增高;细胞形态损害减轻,细胞数量增加。对20μmol·L1NMDA介导的神经元损伤改变无影响。提示Tet对某些Glu类神经毒剂引起的胎鼠大脑皮层神经元损伤有一定保护作用,其机制可能是抑制细胞膜上的Na+通道开放,阻止膜去极化而影响电压依赖性Ca2+通道启动。对NMDA受体可能亦有一定作用。
引用
收藏
页码:31 / 36
页数:6
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