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亚低温对脑出血后血脑屏障内皮细胞Rho激酶Ⅱ表达影响的研究

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摘要 目的通过观察亚低温对实验性脑出血后的血脑屏障(BBB)、BBB内皮细胞Rho激酶Ⅱ的影响,进一步探讨亚低温减轻血管源性脑水肿的机制。方法将健康雄性SD大鼠(54只)随机分为3组:生理盐水组、脑出血组和亚低温+脑出血组。采用自体血注入法建立脑出血模型,伊文思蓝浓度测定BBB通透性、脑水含量(干湿重法),观察各组大鼠BBB内皮细胞Rho激酶Ⅱ的表达(免疫组化法)。结果脑出血24 h后BBB通透性开始增加,72 h达高峰,7 d后开始下降,其变化趋势与脑水含量及BBB内皮细胞Rho激酶Ⅱ的表达一致。亚低温+脑出血组的BBB通透性、脑水含量及BBB内皮细胞Rho激酶Ⅱ的表达均低于脑出血组。结论脑出血后血管源性脑水肿的形成与BBB内皮细胞Rho激酶Ⅱ的高表达有关;亚低温可以通过减少其表达来减轻BBB通透性的增加,减轻脑水肿,进一步保护脑组织。
出处 《卫生职业教育》 2014年第17期140-142,共3页 HEALTH VOCATIONAL EDUCATION
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参考文献8

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