抑制功能合的环氧基因酶-2/前列腺素E合成酶,作为人类对simvastatin依赖的斑块稳定的基础
Francesco Cipollone1, Maria Fazia, Annalisa Iezzi
1Department of Medicine and Aging, School of Medicine, University of Chieti G. d'Annunzio, Chieti, Italy.
Circulation
|March 26, 2003
概括
辛瓦斯塔丁可降低炎症并抑制心血管斑块内的巨细胞中COX-2/mPGES的表达. 这种作用通过减少矩阵金属蛋白酶 (MMP) 诱导的破裂,有助于斑块稳定.
科学领域:
- 心血管研究研究心血管研究
- 药理学 药理学是指药理学的学科.
- 分子生物学分子生物学
背景情况:
- 通过降低金属蛋白酶 (MMP) 活性,他类药物稳定动脉样硬化斑块.
- 基于他类药物诱导的斑块稳定性的分子机制尚未完全理解.
- 循环氧化酶-2 (COX-2) 和微体PGE合成酶 (mPGES) 的增强表达与MMP活性和斑块破裂相关.
研究的目的:
- 为了研究simvastatin对炎症细胞透的影响.
- 为了确定simvastatin对人类心血管斑块中COX-2/mPGES和MMPs的表达的影响.
主要方法:
- 在患有动脉狭窄症的患者中,对simvastatin加饮食或单独饮食进行随机试验.
- 分析斑块组成,包括炎症细胞 (巨细胞,T淋巴细胞),COX-2/mPGES,MMP,脂质,氧化LDL和原蛋白.
- 技术包括免疫细胞化学,西部斑点,RT-PCR和生殖图.
主要成果:
- 辛巴斯塔丁治疗显著减少了斑块中的巨细胞,T淋巴细胞和HLA-DR+炎症细胞.
- 辛巴斯塔丁降低了COX-2/mPGES和MMP的表达和活性.
- 来自simvastatin组的斑块显示原蛋白增加和脂质/氧化LDL含量减少.
- 在体外,美瓦诺酸逆转了simvastatin对COX-2/mPGES的抑制.
结论:
- 辛瓦斯塔丁有效降低炎症,并抑制斑块巨细胞中COX-2/mPGES的表达.
- 西姆瓦斯塔丁对COX-2/mPGES的抑制有助于斑块稳定.
- 这种机制可能涉及抑制MMP诱导的斑块破裂.
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