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Protective effect of hydroxysafflor yellow A against rat cortex mitochondrial injuries induced by cerebral ischemia
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- Author:
- No author available
- Journal Title:
- ACTA PHARMACEUTICA SINICA
- Issue:
- 10
- DOI:
- 10.3321/j.issn:0513-4870.2004.10.002
- Key Word:
- 羟基红花黄色素A;脑缺血;线粒体;自由基
Abstract： 目的研究羟基红花黄色素A对脑缺血所致大鼠脑线粒体损伤的保护作用.方法用栓线法制作大鼠大脑中动脉缺血(MCAO)模型,测定线粒体肿胀度、膜流动性、膜磷脂含量、呼吸功能、线粒体呼吸酶、超氧化物歧化酶(SOD)、丙二醛(MDA)、Ca2+等.结果羟基红花黄色素A(10,20 mg·kg-1)能明显抑制缺血脑线粒体膜流动性的降低,膜磷脂降解,减少脑缺血引起的线粒体肿胀,抑制NADH脱氢酶、琥珀酸脱氢酶和细胞色素c氧化酶活性的降低,改善线粒体呼吸功能;同时羟基红花黄色素A能明显降低中风大鼠脑细胞线粒体MDA含量、升高SOD活性、抑制Ca2+过多摄入.结论羟基红花黄色素A对缺血脑细胞线粒体的损伤有明显的保护作用,该作用可能与清除氧自由基、抑制脂质过氧化、拮抗Ca2+有关.
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