对多种心脏代谢风险因素进行大规模全基因组相互作用分析,以确定特定年龄的遗传风险因素
Linjun Ao1, Diana van Heemst2, Jiao Luo3
1Department of Human Genetics, Leiden University Medical Center, Leiden, the Netherlands. l.ao@lumc.nl.
GeroScience
|September 25, 2024
概括
影响心脏代谢风险因素的遗传变异会在一生中发生变化. 这项研究发现了阿波利波蛋白B和甘油三的特定基因年龄相互作用,但不是LDL-C,BMI或血压.
科学领域:
- 遗传学 是一个遗传学.
- 心血管疾病 心血管疾病
- 代谢综合征是代谢综合征的一种.
背景情况:
- 遗传因素显著影响心脏代谢风险.
- 了解这些遗传效应如何在一生中发生变化至关重要,但仍未得到充分探索.
研究的目的:
- 用全基因组相互作用研究来确定心脏代谢因子的特定年龄的遗传风险.
- 研究遗传变异对心脏代谢风险因素在一生中的影响.
主要方法:
- 全基因组相互作用研究 (GWIS) 对来自英国生物库的270,276名欧洲祖先参与者进行了研究.
- 在GWIS模型中,研究了基因变异与年龄之间对阿波利波蛋白B (ApoB),低密度脂蛋白胆固醇 (LDL-C),甘油三 (TG),体重指数 (BMI) 和静脉血压 (SBP) 的相互作用.
- 在哥本哈根一般人口研究 (CGPS) 和爱沙尼亚生物银行 (EstBB) 中复制了重要的发现.
主要成果:
- 多种变异显示了ApoB和TG的全基因组显著的年龄相互作用.
- APOE4标记变体rs429358对ApoB和TG的年龄有显著的相互作用.
- 在PCSK9,APOB和LDLR附近的三个额外变体显示了ApoB的年龄相互作用. 效果大小通常随着年龄的增长而减少.
- 对于LDL-C,SBP或BMI没有发现显著的变异年龄相互作用.
结论:
- 特定的基因变异,特别是rs429358 (APOE4),对阿波利波蛋白B和甘油三水平表现出年龄相关的影响.
- 大多数对心脏代谢风险因素的遗传影响似乎在整个生命周期中保持稳定,但ApoB和TG是显著的例外.
- 这些发现强调了在对心脏代谢健康的遗传研究中考虑年龄的重要性.
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