葡萄籽原花青素可能通过AKT-Caspase-3途径对深低温缺血再灌注脑起保护作用

被引:3
作者
王怡悦 [1 ]
莫绪明 [2 ]
马志飞 [2 ]
张永生 [2 ]
何晓敏 [2 ]
戚继荣 [2 ]
彭卫 [2 ]
机构
[1] 南京大学医学院儿科
[2] 南京医科大学附属南京儿童医院心胸外科
关键词
葡萄籽原花青素; 脑缺血; 再灌注; 丝氨酸-苏氨酸蛋白激酶; 半胱天冬氨酸蛋白酶-3;
D O I
暂无
中图分类号
R285.5 [中药实验药理];
学科分类号
100806 [中药药理学];
摘要
目的探讨葡萄籽原花青素(GSPE)预处理对小鼠脑缺血再灌注(I/R)损伤的保护作用机制。方法将60只4周龄C57/BL6小鼠随机平均分为假手术组、模型组和GSPE组建立深低温I/R模型,再灌注24h后处死小鼠取脑,Western blot检测丝氨酸-苏氨酸蛋白激酶(AKT)的表达,逆转录-聚合酶链反应(RT-PCR)技术检测小鼠脑组织半胱天冬氨酸蛋白酶(Caspase)-3 mRNA,TUNEL法检测小鼠大脑皮层细胞凋亡。结果与假手术组比较模型组和GSPE组于再灌注24h后p-AKT显著激活(P<0.05),Caspase-3 mRNA表达明显增加(P<0.05)并且出现明显的病理凋亡(P<0.05);GSPE组p-AKT表达较模型组显著增高[A值(1.90±0.02)>(1.6±0.01),P<0.05]。且Caspase-3 mRNA、病理凋亡均显著低于模型组[(0.43±0.02)<(0.86±0.03);(40.92±3.18)%<(79.86±4.68)%,P<0.05]。结论葡萄籽原花青素可能通过AKT-Caspase-3途径对深低温缺血再灌注脑起保护作用。
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