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中国临床药理学与治疗学 ›› 2003, Vol. 8 ›› Issue (5): 518-521.

• 研究原著 • 上一篇    下一篇

神经节苷酯对大鼠脑放射后学习记忆力下降的影响

唐亚梅, 邢诒刚, 李梅, 沈君1, 肖颂华, 黎祥喷   

  1. 中山大学第二附属医院神经科,1放射科,广州 510120,广东
  • 收稿日期:2003-04-14 修回日期:2003-04-29 出版日期:2003-10-26 发布日期:2020-11-19
  • 通讯作者: 邢诒刚,男,教授,博士生导师,研究方向:放射性脑脊髓病,帕金森病。Tel:020-81332619  E-mail:ymtang95@sina.com
  • 作者简介:唐亚梅,女,硕士,研究方向:放射性脑脊髓病。
  • 基金资助:
    中山大学附属第二医院中青年科研启动基金项目(No2001-06)

Neuroprotective effect of GM1 ganglioside onlearning and memory impairment in rats with brain radiation

TANG Ya-Mei, XING Yi-Gang, LI Mei, SHEN Jun1, XIAO Song-Hua, LI Xiang-Pen   

  1. Department of Neurology,1Department of Radiation,The Second Affiliated Hospital,Sun Yat-sen University,Guangzhou 510120,Guangdong,China
  • Received:2003-04-14 Revised:2003-04-29 Online:2003-10-26 Published:2020-11-19

摘要: 目的 研究神经节苷酯(GM1)对脑放射后学习记忆能力减退鼠空间学习记忆的影响。方法 60只SD 大鼠头部接受60Coγ射线照射,7 Gy/次,1次/天,连续照射6 d,总剂量42 Gy,照射鼠分3 组,每组20 只:照射后GM1 治疗组;照射后生理盐水(NS)治疗组;照射后未干预组。另设20 只鼠为对照组,麻醉后不予照射。照射结束后采用Morris 水迷宫测定大鼠的学习记忆能力,迷宫试验结束后断头取脑,观察脑组织病理改变。结果 GM1 治疗组大鼠寻找平台潜伏期较照射后未干预组及NS 治疗组缩短,但仍长于正常对照组。GM1 治疗组大鼠平台象限游泳距离百分比高于照射后未干预组及NS 治疗组,但较正常对照组低。组织学检查显示照射后大鼠脑组织神经细胞变性坏死,GM1 治疗组病理改变较NS治疗组轻。结论 放射性脑损伤可使鼠的学习记忆能力明显下降,GM1 对放射所致的学习记忆能力减退有明显改善作用。

关键词: 药效学, 神经节苷酯, 颅脑照射, 学习障碍, 记忆障碍, Morris 水迷宫

Abstract: AIM: To study the effect of GM1 ganglioside(GM1)onlearning andmemory disorders in rats with brain radiation.METHODS: 60 rats with brain irradiation byγ-ray at the dosage of 7 Gy·d-1for 6 days,then were divided into 3 groups:20 rats were injected GM1daily (GM1 group),20 rats NS (NS group),and other 20 rats no any treatment (no treatment group).Another 20 rats were set as a normal rat group.Thelearning and memory ability of the rats was measured withMorris water maze,and histopathologic changes were also observed.RESULTS: Thelatency reached toPlatform shortened significantly in GM1 grouPin comparison with NS grouPand the no treatment group,butlonger than normal rat group.ThePercentages of swim distance inPlatform quadrant in GM1 grouPwere higher than those in NS grouPand the no treatment group,butlower than those in the normal rat group.Their histopathologic changes were mitigated in GM1 grouPcompared with NS group.CONCLUSIONS: GM1 ganglioside shows a neuropotective effect onlearning and memory impairment in rats with brain radiation.

Key words: pharmacodynamics, ganglioside, cranial irradiation, learning impairment, memory impairment, morris water maze

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