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老年大鼠脑细胞内钙的变化及β-淀粉样蛋白的影响 被引量:2

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摘要 目的 观察老年大鼠脑细胞内钙浓度 (〔Ca2 + 〕i)的变化及βAP对〔Ca2 + 〕i的影响。方法 以Fura 2 /AM为荧光指示剂 ,采用荧光分光光度计测定急性分离的大鼠脑〔Ca2 + 〕i。结果 静息状态下老年大鼠脑〔Ca2 + 〕i及对高钾除极化的反应均明显低于青年对照组 (P <0 0 1 ) ,βAP对高钾除极化下脑〔Ca2 + 〕i的增加有明显增强作用 (P <0 0 1 ) ,但其增强作用在老年大鼠与青年大鼠间无明显差异 (P >0 0 5)。结论 老年大鼠脑〔Ca2 + 〕降低 ,βAP能使老年动物脑细胞内钙更明显超载 ,且在相同情况下老年神经元的受损更加严重。
出处 《中国老年学杂志》 CAS CSCD 北大核心 2004年第12期1171-1172,共2页 Chinese Journal of Gerontology
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