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慢性应激抑郁大鼠海马CA1神经元突触可塑性研究 被引量:17

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摘要 目的探讨慢性轻度不可预见应激(chronic unpredictable mild stress,CUMS)抑郁模型大鼠海马CA1区神经元的突触可塑性改变。方法将20只雄性Sprague-Dawley(SD)大鼠随机等分为CUMS组和对照组,前者连续28天每天随机接受不同的应激,对照组同样条件下饲养但不给应激,至第28天进行行为测评后处死,在日立(H7500)透射电镜下测量海马CA1神经元突触界面结构参数。结果 CUMS抑郁大鼠海马CA1神经元突触活性区长度(216.64±20.19 nm)及突触后致密物厚度(42.4±5.23 nm)显著小于对照组(321.58±12.27nm,69.6±4.77 nm),差异有统计学意义(P<0.05),突触界面曲率及宽度与对照组差异无统计学意义(P>0.05)。结论慢性应激性抑郁大鼠存在海马CA1区神经元突触可塑性的改变。这提示抑郁症的发病机制可能与海马神经元突触可塑性相关。
出处 《中国神经精神疾病杂志》 CAS CSCD 北大核心 2012年第11期672-676,共5页 Chinese Journal of Nervous and Mental Diseases
基金 河南省卫生科技创新型人才工程专项经费(人才板块项目3052)
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参考文献26

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