血管新素转化酶基因中的删除多态性是肌动脉梗塞的强有力的危险因素
Nature
|October 15, 1992
概括
血管酶转化酶 (ACE) 基因变异,特别是DD基因型,与心肌梗塞的更高风险有关. 这一发现确定了先前被认为是低风险的个体中冠状动脉心脏病的潜在危险因素.
科学领域:
- 心血管遗传学 心血管遗传学
- 分子心脏病学分子心脏病学
- 血管生物学 血管生物学
背景情况:
- 冠心病 (CHD) 的发病包括动脉样硬化,血栓形成和血管收缩.
- 血管酶转化酶 (ACE) 在血管和平滑肌肉细胞增殖中起着至关重要的作用.
- ACE/ID多态性影响循环中的ACE水平,影响心血管调节.
研究的目的:
- 调查ACE/ID基因多态和心肌梗塞 (MI) 之间的关联.
- 确定这种多态性是否起到心脏病风险因素的作用,特别是在特定的子组中.
主要方法:
- 一项病例对照研究比较了心脏病发作患者 (n=610) 和健康对照人群 (n=733).
- 对ACE/ID多态的基因型定型,以评估基因型频率.
- 分析基因型与心脏病的关联,考虑诸如体重指数和ApoB水平等因素.
主要成果:
- 在心脏病发作患者中,DD基因型的发生率明显高于对照组 (P=0.007).
- 这种关联在低体重指数和低血ApoB水平 (P<0.0001) 的受试者中尤为明显.
- DD基因型与更高的循环ACE水平相关.
结论:
- ACE/ID多态,特别是DD基因型,是心肌梗塞的重要危险因素.
- 这种遗传变异识别出患有心脏病风险增加的个体,包括以前被评估为低风险的个体.
- 这些发现强调了基因分析在心血管风险评估中的重要性.
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