Abstract

目的 探讨不同学习记忆能力大鼠的不同脑区一些氨基酸含量的差异,以揭示学习记忆能力与特定脑区某些氨基酸含量的关系.方法 wistar大鼠在MG-2型三等分辐射式迷宫中进行学习记忆能力的检测后,根据学习记忆能力分为两组(学习记忆能力均好者为Ⅰ组;学习记忆能力均差者为Ⅱ组).将大鼠立即断头处死,分别测定大脑皮层、小脑、纹状体、海马、下丘脑五个脑区Asp、Glu、Ala、Gly、GABA、Tau的含量.结果学习记忆能力均差的大鼠与学习记忆能力均好的大鼠比较:海马、纹状体Asp含量显著降低(P<0.05);皮层、海马、纹状体Glu含量显著降低(P<0.05);皮层、小脑、海马、纹状体Tau含量显著降低(P<0.05和P<0,01);皮层、纹状体Gly含量显著降低(P<0.05);而纹状体GABA含量则显著升高(P<0.05);各脑区Ala含量在两组间无显著性差异(P﹥0.05).结论海马、皮层、小脑、纹状体内氨基酸水平和比例与学习记忆密切相关。

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