红景天甙对低压低氧诱导的ApoE小鼠动脉粥样硬化斑块及MMP-2、MMP-9和TIMP-2表达的影响

被引：8

作者：

张立平

马双陶

杨大春

李德

王强

丁盛

蒋利

杨永健

机构：

[1] 成都军区总医院

来源：

中华中医药杂志 | 2015年 / 06期

关键词：

红景天甙; 低压低氧; 载脂蛋白E基因敲除小鼠; 动脉粥样硬化; 斑块稳定性;

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:观察红景天甙对低压低氧诱导的载脂蛋白E基因敲除(Apo E-/-)小鼠动脉粥样硬化(AS)斑块及基质金属蛋白酶-2(MMP-2)、基质金属蛋白酶-9(MMP-9)、基质金属蛋白酶组织抑制剂-2(TIMP-2)表达的影响。方法:30只8周龄Apo E-/-小鼠随机分为常压常氧组、低压低氧组、红景天甙组,后两组每天处于低压低氧状态,红景天甙组每天灌服红景天甙30mg/kg。12周后测空腹血糖及血脂,取小鼠主动脉根部的主动脉,masson染色观察AS斑块的大小及斑块内胶原含量,Western blot及血清检测MMP-2、MMP-9、TIMP-2蛋白表达。结果:3组空腹血糖和血脂无统计学差异;与常压常氧组比较,低压低氧组AS斑块面积明显增加(P<0.01),胶原含量明显减少(P<0.01);与低压低氧组比较,红景天甙组斑块面积及MMP-2,MMP-9蛋白明显降低(P<0.01),而斑块胶原含量及TIMP-2蛋白明显增加(P<0.01)。结论:红景天甙能抑制低压低氧诱导的AS斑块形成,并提高斑块稳定性,其机制可能与红景天甙增加斑块内胶原含量和降低MMP-2、MMP-9,提高TIMP-2蛋白表达有关。

引用

页码：2043 / 2046

页数：4

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