急性低压低氧对大鼠空间学习记忆的影响及与海马内孤啡肽的关系

被引:11
作者
林建雄
隋建峰
罗峻
李希成
机构
[1] 第三军医大学生理教研室,第三军医大学生理教研室,第三军医大学生理教研室,第三军医大学生理教研室重庆,重庆,重庆,重庆
关键词
低压低氧; 学习记忆; 孤啡肽; 海马;
D O I
10.13459/j.cnki.cjap.2004.01.005
中图分类号
R363 [病理生理学];
学科分类号
100104 ;
摘要
目的 :研究暴露在不同海拔高度的急性低压低氧环境中 ,大鼠空间学习记忆能力的变化及与海马内孤啡肽的关系。方法 :采用低压舱模拟 4 5 0 0m(中度 )和 75 0 0m(重度 )两种海拨高度 ,Morris水迷宫训练方法和反转录多聚酶链式反应 (RT PCR)技术。结果 :①海马内孤啡肽mRNA表达在急性重度低压低氧 (8h/d ,连续 6d)后明显增加 ,然而在Morris水迷宫训练 (6counts/d ,连续 6d ,定位航行潜伏期逐渐缩短 )后则显著降低。②急性低压低氧后 ,定位航行潜伏期明显延长 ,而海马内孤啡肽mRNA表达较学习记忆训练组明显升高。结论 :海马内孤啡肽参与急性低压低氧降低大鼠空间学习记忆的机制。
引用
收藏
页码:12 / 15
页数:4
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