低氧预适应对小鼠海马CA1区突触传递效应的影响

来源 :中国神经科学学会第四次会员代表大会暨第七届全国学术会议(The 7th Biennial Meeting and the | 被引量 : 0次 | 上传用户:paokahh
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  脑低氧预适应是脑抗缺血/缺氧的一种内源性保护现象。哺乳动物的海马脑区对缺氧/缺血极为敏感,而且海马脑区是研究学习记忆及神经可塑性等功能机制的常用模型。突触传递效率的长时程增强(long-term potentiation,LTP)是突触部位传递效能增强的一种表现形式。本研究应用脑片细胞外微电极记录技术,通过观察整体动物急性重复低氧预处理后海马脑片CA1区诱发电位及LTP诱导产生的变化,探讨低氧预适应对突触传递效应的影响。将BALB/c雄性小鼠(体重20-22 g)随机分为正常对照组(正常不低氧,H0)、实验对照组(1次低氧,H1)和实验组(重复4次低氧,低氧预适应,H4)。制备H1组和H4组动物,分别记录缺氧耐受时间。
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