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阿托伐他汀对心肌缺血再灌注老年大鼠NF-κBp65、COX-2表达的影响 被引量:2

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摘要 目的探讨阿托伐他汀对心肌缺血再灌注老年大鼠NF-κBp65、COX-2表达的影响。方法健康Wistar老年大鼠30只,18月龄,随机分为3组,假手术组(S组)、缺血再灌注组(I/R组)、阿托伐他汀组(AT组),每组10只。采用结扎左冠状动脉前降支制备心肌缺血再灌注模型。观察阿托伐他汀对缺血再灌注老年大鼠血清中肌酸激酶同工酶(CK-MB)、天门冬氨基转移酶(AST)、乳酸脱氢酶(LDH)溢出量的影响;采用免疫组化法观察心肌缺血再灌注后心肌组织细胞中NF-κBp65及COX-2的蛋白表达。结果与S组比较,I/R组心肌组织中CK-MB、AST及LDH含量明显增高,NF-κBp65的活性增高,COX-2的蛋白表达明显增加均有统计学意义(P<0.001);AT组中CK-MB、AST及LDH含量、NF-κBp65及COX-2略升高均有统计学意义(P<0.01)。结论 CK-MB、AST、LDH的含量及NF-kBp65和COX-2在心肌缺血再灌注中均有高水平表达,提示炎症参与了心肌缺血再灌注,机制可能是NF-κBp65通过对COX-2的转录调控发挥了重要作用;阿托伐他汀可抑制NF-κBp65活性,降低COX-2的蛋白表达水平,减轻I/R心肌炎症反应,对心肌起保护作用。
出处 《中国老年学杂志》 CAS CSCD 北大核心 2013年第8期1856-1857,共2页 Chinese Journal of Gerontology
基金 吉林省教育厅资助项目(2010268)
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