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PKC、CaMKⅡ在慢性脑缺血大鼠认知功能损害中的作用 被引量:7

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摘要 目的观察慢性脑缺血大鼠海马组织蛋白激酶C(protein kinase C,PKC)、钙调素依赖蛋白激酶Ⅱ(calmodulin-depend-ent protein kinaseⅡ,CaMKⅡ)水平变化,探讨其在慢性脑缺血认知功能损害中的作用。方法采用双侧颈总动脉永久性结扎(per-manent occlusion of bilateral common carotid arteries,2-VO)制作慢性脑缺血模型,40只大鼠随机分为假手术组,缺血3周组,缺血8周组,缺血12周组(n=10),Morris水迷宫检测大鼠空间学习记忆能力,Western blot法检测大鼠海马神经元PKC、CaMKⅡ、谷氨酸受体NMDAR1、NMDAR2B的表达水平,并观察其动态变化过程。结果缺血3周组大鼠的空间学习记忆能力较假手术组显著下降(P<0.05),缺血8周和12周组下降更加明显(P<0.01)。缺血3周组海马区PKC、CaMKⅡ与谷氨酸受体NMDAR 1、NMDAR 2B表达水平较假手术组增高(P<0.01),缺血8周和12周组表达均降低(P<0.01)。结论PKC、CaMKⅡ与谷氨酸受体NMDAR 1、NMDAR2B变化规律相同,在缺血后期PKC、CaMKⅡ表达减低可能与学习记忆损害有关。
出处 《中国神经精神疾病杂志》 CAS CSCD 北大核心 2009年第8期499-501,共3页 Chinese Journal of Nervous and Mental Diseases
基金 国家自然科学基金(编号:30670750)
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参考文献17

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