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血栓模块素Ala455Val多态性和冠状动脉心脏病的风险
1Vascular Biology Research Center and Division of Hematology, Department of Internal Medicine, The University of Texas-Houston Health Science Center, Houston, TX 77030, USA.
Circulation
|March 14, 2001
概括
血栓激素A455V基因变异在黑人中增加了6倍以上的冠状动脉心脏病 (CHD) 的风险. 这一遗传因素在白人人口中没有显著影响心脏病风险.
科学领域:
- 心血管遗传学 心血管遗传学
- 分子流行病学分子流行病学
背景情况:
- 血栓模块素 (TM) 对于血管保护至关重要,在内皮细胞上表达.
- 一种已知的TM多态 (A455V) 与急性心肌梗塞有关.
- 这种TM多态性对冠心病 (CHD) 风险的预测价值仍然不确定.
研究的目的:
- 调查Thrombomodulin A455V单核酸多态性是否预测患冠状动脉心脏病 (CHD) 的风险.
主要方法:
- 一项大型队列研究在5年的随访期间确定了发生的CHD病例.
- 对心血管疾病病例和参考样本确定了TM-455基因型,分析了种族差异 (黑人和白人人口).
- 根据年龄,性别和其他心脏病风险因素进行调整的权重比例危险回归分析.
主要成果:
- 在非病例中,AA基因型比病例更常见 (P=0.016).
- 黑人病例中的AA基因型频率明显低于非黑人病例 (P=0.018).
- 在黑人中,V等位基因与心血管疾病风险增加6.1倍相关 (风险比率6.1,95%CI1.7-22.9),但在白人中没有显著增加.
结论:
- 血栓素A455V多态性是黑人群体发展冠心病 (CHD) 风险的预测因素.
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