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慢性应激对快速老化小鼠学习能力的影响

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摘要 目的观察慢性应激对4月龄快速老化小鼠(SAMP8)空间学习能力的影响并探讨可能的机制。方法 4月龄SAMP8和同龄正常老化小鼠(SAMR1)分别分成对照组和应激组。应激组小鼠给予连续4 w,每天2 h的束缚性应激。4 w后各组小鼠分别进行Y迷宫实验和海马DG区神经干细胞增殖的检测。结果应激组SAMP8 5 d Y迷宫测试总的正确反应数明显少于应激组SAMR1(P<0.01);应激组SAMP8海马BrdU阳性细胞数明显少于应激组SAMR1小鼠(P<0.01)。结论与同龄SAMR1小鼠相比,4月龄SAMP8小鼠存在对慢性应激损伤的易感性,这种应激易感性可能是SAMP8成年后快速老化的原因之一。
出处 《中国老年学杂志》 CAS CSCD 北大核心 2013年第2期368-371,共4页 Chinese Journal of Gerontology
基金 上海交通大学附属第六人民医院课题(院1150) 上海交通大学医学院附属第九人民医院院级课题(2008)
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