阿托伐他汀对兔主动脉粥样斑块中γ-谷氨酰转移酶表达的影响

被引：1

作者：

李刚 ^{[1
]}

陈芳 ^{[2
]}

陆卫华 ^{[3
]}

程键 ^{[3
]}

曾尟枚 ^{[3
]}

方萍 ^{[3
]}

唐忠志 ^{[3
]}

周子华 ^{[1
]}

廖玉华 ^{[1
]}

机构：

[1] 华中科技大学附属协和医院心内科

[2] 广州军区武汉总医院医学实验科

[3] 广州军区武汉总医院急诊科

来源：

临床心血管病杂志 | 2014年 / 30卷 / 06期

关键词：

动脉粥样硬化; 阿托伐他汀; γ-谷氨酰转移酶; 炎性因子;

D O I：

10.13201/j.issn.1001-1439.2014.06.004

中图分类号：

R541.4 [冠状动脉（粥样）硬化性心脏病（冠心病）];

学科分类号：

1002 ; 100201 ;

摘要：

目的:研究他汀类药物对于兔主动脉粥样斑块内的γ-谷氨酰转移酶(GGT)表达的影响,同时探讨其表达活性的降低是否有助于斑块的进一步稳定,并证实斑块内的GGT与其他炎性因子的相关性。方法:选取15只新西兰雄性大耳白兔随机分成对照组、高脂组与他汀组。首先通过高脂饮食喂养高脂组和他汀组10周,建立兔主动脉粥样硬化模型。在模型成功建立后,以阿托伐他汀1.5mg·kg-1·d-1连续喂养他汀组6周进行干预。分别于0周、10周末、16周末对实验动物进行TC、TG、LDL、HDL及CRP检测。以ELISA法在第16周末进行GGT-1、VCAM-1和ICAM-1水平检测。实时定量PCR及Western blot方法检测主动脉GGT-1、VCAM-1和ICAM-1的表达。结果:经高脂喂养10周后,高脂组、他汀组兔LDL及TG水平较对照组明显增高,经阿托伐他汀干预治疗6周后他汀组LDL及TG水平较高脂组明显降低[LDL:(11.53±1.87)mmo/L︰(16.87±1.24)mmo/L;TG:(1.68±0.14)∶(2.74±1.88)mmo/L,均P<0.05]。各组血CRP水平也有明显差异。相对于对照组,高脂组血浆GGT-1、VCAM-1和ICAM-1水平均显著增高。使用他汀干预后,他汀组兔血浆GGT-1、VCAM-1和ICAM-1水平,主动脉粥样斑块中GGT-1、VCAM-1和ICAM-1表达水平较高脂组均有显著下降(均P<0.05)。结论:动脉粥样硬化模型兔外周循环中GGT水平明显升高。使用阿托伐他汀干预治疗后,GGT在其主动脉粥样斑块局部组织中的表达明显下降。阿托伐他汀可以有效抑制斑块中GGT的表达。这可能是他汀类药物抗粥样硬化作用的一个新机制。

引用

页码：472 / 476

页数：5

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