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侧脑室注射STZ对大鼠学习记忆障碍及海马tau蛋白AD特异性位点磷酸化增加的影响 被引量:4

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摘要 目的验证侧脑室注射链脲佐菌素(STZ)阻断脑内胰岛素信号转导致脑能量代谢缺陷与阿尔茨海默病(AD)样学习记忆障碍及tau蛋白磷酸化的关系。方法 36只SD大鼠随机分为模型组和假手术组,模型组双侧侧脑室注射STZ 3 mg/kg,第3天重复1次,假手术组侧脑室注射等量的人工脑脊液代替STZ。的21天、第31天后分别对一批动物进行学习记忆能力测试,同时免疫组化及Western-blot方法检测两组大鼠海马tau-ps422表达。结果与假手术组相比,模型组大鼠出现学习记忆障碍,海马CA1区tau-ps422阳性细胞明显增多,以第31天更为明显,Western-blot结果相同(P<0.05或P<0.01)。结论侧脑室注射STZ可以引起AD样学习记忆障碍及脑内tau蛋白AD特异性位点Ser422磷酸化水平增加。
出处 《中西医结合心脑血管病杂志》 2010年第8期961-963,共3页 Chinese Journal of Integrative Medicine on Cardio-Cerebrovascular Disease
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