在南亚人中使用孟德尔的随机化对失脂血症和心血管疾病的蛋白质标优先考虑
Siwei Wu1,2, Alexander Smith2, Jingxian Huang2
1Department of Clinical Nutrition, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine.
medRxiv : the preprint server for health sciences
|January 7, 2025
概括
南亚人面临更高的心血管疾病的风险,由于dyslipidaemia. 这项研究确定了29种可能影响脂质水平的血蛋白,PCSK9在祖先之间表现出多种影响,突出了疾病风险的遗传差异.
科学领域:
- 遗传学和基因组学 在
- 心血管医学 心血管医学
- 蛋白质组学是指蛋白质组学.
背景情况:
- 南亚人呈现出不成比例的高脂缺血风险,这是心血管疾病 (CVD) 的关键可修改风险因素.
- 了解这种人群中脱脂症的遗传和蛋白质水平的基础对于有针对性的心血管疾病预防策略至关重要.
研究的目的:
- 在南亚人中确定特定的血蛋白点,因果关系与脱脂症相关.
- 在南亚人和欧洲人之间调查血蛋白对脂质样本和心血管疾病风险的影响的潜在异质性.
主要方法:
- 采用双样本的门德尔随机化 (MR) 方法,结合MR-Egger,加权中位数,局部化和概括的MR (GMR) 分析.
- 评估了2800个血蛋白与各种脂质测量 (HDL-C,LDL-C,非HDL-C,总胆固醇,甘油三) 的关联.
- 进行了观测分析并评估了心血管疾病的关联,比较了欧洲和南亚遗传祖先群体之间的影响.
主要成果:
- 确定了29种可能影响脂质水平的基因代理蛋白,其中12种显示强有力的证据 (强烈的局部化和GMR).
- 值得注意的蛋白质包括ANGPTL3和PCSK9;PCSK9在欧洲人中与LDL-C的关联明显更强,而不是在南亚人中.
- 观察分析显示,南亚人中PCSK9和LDL-C之间存在显著的相互作用,这表明与其他种族相比,影响较小. 在南亚人中,CELSR2也与冠状动脉疾病 (CAD) 有关.
结论:
- 在南亚人群中建立了特定的血蛋白,脂质失调和心血管疾病风险之间的潜在因果关系.
- 在不同遗传祖先群体的血蛋白对脂质代谢的影响中突出显著的异质性.
- 强调需要在南亚人群中进行更大规模,特定人群的研究,以验证这些发现并为临床干预提供信息.
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