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伏安法测定MK-801和五味子醇甲对DA/DOPAC的影响

张建军, 钮心懿   

  1. 中国医学科学院药物研究所, 北京 100050
  • 收稿日期:1992-01-01 修回日期:1992-07-25 出版日期:1992-12-15 发布日期:1992-12-15

Effects of MK-801 and Schizandrol A on DA/DOPAC Measured by Voltammetry in Ischemic Rat Striatum

Jian-Jun Zhang, Xin-Yi Niu   

  1. Institute of Materia Medica; Chinese Academy of Medical Sciences; Beijing 100050
  • Received:1992-01-01 Revised:1992-07-25 Online:1992-12-15 Published:1992-12-15

摘要: 用差示复位脉冲伏安法DNPV在体测定了大鼠纹状体细胞外液中DA/DOPAC含量在缺血和再灌期的动态变化, 并观察了MK-801和五味子醇甲对DA/DOPAC变化的影响, 结果表明缺血6分钟期间DA/DOPAC峰显著增高, 再灌流后, 峰高逐渐下降, +MK-801和五味子醇甲均能显著抑制缺血后纹状体内DA的释放。

关键词: 缺血, 伏安法, 多巴胺, MK-801, 五味子醇甲

Abstract: The time course of changes in the levels of extracellular DA/DOPAC in rat striatum during brain ischemia and reperfusion was measured by the method of in vivo differential normal pulse voltammetry (DNPV). Acute cerebral ischemia of rats was produced by four-vessel occlusion. The effects of (+)-MK-801 and schizandrol A on the change of DA/DOPAC were investigated. The results showed that the DA/DOPAC peak in- creased markedly during 6 min of ischemia and, after reperfusion, the peak height decreased gradually. Both (+)-MK-801 and schizandrol A significantly inhibited the DA release after ischemia in the striatum.

Key words: Ischemia, Voltammetry, Dopamine, (+)MK-801, Schizandrol A

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