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海马齿状回区D1受体激活对血管性痴呆大鼠学习记忆能力的改善作用 被引量:1

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摘要 目的观察海马齿状回(DG)区D1受体激活对血管性痴呆(VD)大鼠学习记忆能力的改善作用。方法32只雄性SD大鼠,随机分为假手术组、VD模型组1、VD模型组2、VD模型SKF38393激动剂组各8只,后三组制备VD模型,后两组采用脑部微量注射法于大鼠海马DG区分别注射生理盐水、D1受体激动剂SKF38393。应用Morris水迷宫实验进行大鼠学习记忆能力的行为学评估,HE染色法观察大鼠海马DG区病理组织形态学变化。结果VD模型组1、假手术组逃避潜伏期分别为(75.73±4.41)、(50.13±4.48)s,两组比较,P<0.05。VD模型组1、假手术组穿越原站台区的次数分别为(2.67±0.67)、(7.67±0.88)次,两组比较,P<0.05。HE染色结果显示,VD模型组大鼠海马DG区神经元数量明显减少,可见坏死的神经元。VD模型组2和VD模型SKF38393激动剂组逃避潜伏期分别为(78.23±7.38)、(57.46±4.81)s,两组比较,P<0.05。VD模型组2和VD模型SKF38393激动剂组穿越原平台区的次数分别为(2.67±0.50)、(5.33±0.51)次,两组比较,P<0.05。结论海马DG区的D1受体激活可改善VD大鼠受损的学习记忆能力。
出处 《山东医药》 CAS 北大核心 2015年第47期23-25,共3页 Shandong Medical Journal
基金 国家自然科学基金资助项目(31160211)
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