淫羊藿苷对大脑中动脉阻塞诱导的缺血性脑卒中模型大鼠的保护作用(英文)

被引:12
作者
丁利静
李菲
石京山
刘波
邓媛媛
龚其海
机构
[1] 遵义医学院基础药理省部共建教育部重点实验室
关键词
淫羊藿苷; 缺血; 脑卒中; 炎症; 大鼠;
D O I
10.14169/j.cnki.zunyixuebao.2015.0032
中图分类号
R285.5 [中药实验药理]; R-332 [医用实验动物学];
学科分类号
100402 [劳动卫生与环境卫生学]; 100806 [中药药理学];
摘要
目的观察淫羊藿苷(ICA)对大脑中动脉阻塞诱导的缺血性脑卒中模型大鼠的保护作用,并探索其可能的作用机制。方法雄性SD大鼠随机分为假手术组、模型组、ICA低、高剂量组及阳性药组(n=14)。ICA低、高剂量组每日两次灌胃ICA 10、30 mg·kg-1,阳性给药组每日灌胃尼莫地平10 mg·kg-1,连续给药1周,末次给药2 h后采用右侧永久大脑中动脉阻塞(p MCAO)建立缺血性脑卒中模型。制模后继续给药。造模后24 h按Bederson法进行神经功能评分,TTC染色法测量脑梗死体积;HE染色观察缺血区组织的病理学变化;Real time RT-PCR测定梗死周围区TNF-α、IL-1β、COX-2及i NOS的mRNA表达;Western Blot检测梗死周围区COX-2和i NOS蛋白表达。结果 ICA明显降低了模型大鼠的神经功能评分,减少脑梗死体积,减轻缺血区组织的病理学损伤。同时,ICA明显抑制了p MCAO诱导的TNF-α、IL-1β、COX-2及i NOS的mRNA表达以及COX-2和i NOS的蛋白表达。结论 ICA对大鼠永久性脑缺血损伤有保护作用,其机制至少与抑制p MCAO后的炎症反应有关。
引用
收藏
页码:137 / 145
页数:9
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