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中国临床药理学与治疗学 ›› 2003, Vol. 8 ›› Issue (5): 567-569.

• 研究原著 • 上一篇    下一篇

褪黑素对小鼠反复脑缺血再灌注损伤学习记忆的改善作用及机制

霍展样, 刘东华1, 刘晓丽   

  1. 新乡医学院机能学实验室;1物理教研室,新乡 453003,河南
  • 收稿日期:2003-02-24 修回日期:2003-03-22 出版日期:2003-10-26 发布日期:2020-11-19
  • 通讯作者: 霍展样,女,实验师,主要从事生理学实验教学和科研工作。Tel:0373-3029405   E-mail:huo-zhan-yang@sina.com

Improved effect of melatonin onlearning and memory in mice with repeat-ed cerebral ischemia and reperfusion and its mechanism

HUO Zhan-Yang, LIU Dong-Hua1, LIU Xiao-LI   

  1. Functionallaboratory;
    1Department ofPhysical,Xinxiang Medical College,Xinxiang 453003,Henan,China
  • Received:2003-02-24 Revised:2003-03-22 Online:2003-10-26 Published:2020-11-19

摘要: 目的 研究褪黑素(melatonin,MT)对反复脑缺血再灌注损伤的保护作用及机制。方法 采用清醒小鼠造成反复脑缺血再灌注损伤模型,应用电迷宫法观察小鼠学习记忆情况,比色法、硝酸还原法检测脑组织丙二醛(MDA)、一氧化氮(NO)含量 。结果 褪黑素可以明显改善反复脑缺血再灌注小鼠的学习记忆能力,同时可不同程度地抑制脑水肿及由反复脑缺血再灌注引起的脑组织中异常升高的MDA、NO 含量。结论 MT 对反复脑缺血再灌注损伤有显著的保护作用,其机制可能与抑制脑水肿及抑制脑内升高的MDA 、NO 有关 。

关键词: 药理学, 脑缺血再灌注, 褪黑素, 学习与记忆, 丙二醛, 一氧化氮

Abstract: AIM: To study theProtective effect and mechanism of melatonin onlearning and memory in mice with repeated cerebral ischemia and reperfusion and its mechanism.METHODS: The models of repeated cere-bral ischemia-reperfusion were established in mice.The function oflearning and memory was tested by the electric mare method,and the concentrations of MDA and NO were measured by colorimetric method and nitric-reduction method in brain tissue.RESULTS: MT could obviously improve the function oflearning and memory of model mice,inhibit cerebral dropsy,andlower the content of MDA and NO in cerebral tissue.CONCLUSION: MT shows significantlyProtective effect against repeated isch-emia-reperfusion injury in mice,and the mechanism might be related to inhibit the rise of MDA and NO in brain tissue.

Key words: pharmacology, melotonin, cerebral ischemia-reperfusion, malonydialdehyde, nitrogen monox-ide

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