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咪唑安定拮抗戊四氮对大鼠海马CA1区动作电位和突触传递的影响

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摘要 目的观察戊四氮对大鼠海马CA1区动作电位(action potential,AP)、兴奋性突触后电流(excitatorypostsynaptic current,EPSC)的影响以及咪唑安定的拮抗作用。方法断头法分离Wistar大鼠海马半脑,切片机切出400μm厚度的海马脑片,全细胞电流钳记录CA1区锥体神经元动作电位发放情况,全细胞电压钳记录电刺激Schaeffer侧支/联合纤维诱发的CA1区锥体神经元EPSC的变化。结果戊四氮使动作电位发放频率增加,EPSC值降低;咪唑安定拮抗戊四氮的作用,使动作电位发放减少甚至消失,EPSC值上升至加入咪唑安定前的2.5倍左右。结论咪唑安定可以部分恢复大鼠海马CA1区戊四氮诱发的动作电位发放和EPSC的改变,从而产生抗癫痫作用。
出处 《广东医学》 CAS CSCD 北大核心 2006年第5期654-656,共3页 Guangdong Medical Journal
基金 广西壮族自治区科学基金资助项目(编号:桂科青0542054)
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参考文献9

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