黑人美国人中阿尔法环球蛋白基因拷贝数和发生缺血性中风风险
A Parker Ruhl1,2, Neal Jeffries3, Yu Yang4
1Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland.
对阿尔法环球蛋白基因删除进行了研究,因为它有可能降低黑人美国人的缺血性中风风险. 然而,这项研究发现,阿尔法环球蛋白基因拷贝数和中风风险降低之间没有关联.
科学领域:
- 遗传学和心血管疾病
- 分子生物学和中风病理生理学
背景情况:
- 非洲血统的个人表现出更高的中风风险和其遗传性.
- 氧化 (NO) 在中风中起着至关重要的作用,而α环球蛋白影响内皮细胞的NO释放.
研究的目的:
- 调查α环球蛋白基因 (HBA) 删除与发生缺血性中风风险之间的关联.
- 为了确定减少HBA拷贝数是否与非洲血统人口中中风发病率降低有关.
主要方法:
- 从REGARDS队列中分析了8,947名非洲血统的参与者.
- 使用滴滴数字PCR测量HBA拷贝数.
- 应用多变量考克斯比例危险回归来评估中风风险.
主要成果:
- 在11年内,5.3%的参与者经历了缺血性中风.
- HBA副本的数量从2到6不等,大多数参与者有2或4份.
- 与HBA拷贝数相关的缺血性中风的调整后危险比为1.04 (95% CI 0.89-1.21,p=0.66).
结论:
- 尽管理论上预期减少HBA拷贝数量可以增强氧化信号,但没有发现与发生的缺血性中风有显著的关联.
- 在这个大批黑人美国人中,阿尔法环球蛋白基因拷贝数与缺血性中风风险无关.
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