循环等离子体代谢物与大量人群队列中的QT间隔之间的关系
William J Young1,2, Mihir M Sanghvi1,2, Julia Ramírez1,3,4
1Clinical Pharmacology and Precision Medicine, William Harvey Research Institute, London, United Kingdom (W.J.Y., M.M.S., J.R., S.v.D., H.R.W., A.T., P.B.M.).
Circulation. Genomic and precision medicine
|September 11, 2025
概括
这项研究将22种代谢物,包括体和脂肪酸,与心率校正的QT (QTc) 间隔变化联系起来. 多不和脂肪酸可能具有保护作用,影响心律失常风险分层.
科学领域:
- 心血管遗传学 心血管遗传学
- 代谢学 代谢学 代谢学
- 临床生物化学 临床生物化学
背景情况:
- 患有糖尿病和代谢综合征的患者表现出更高的QT间隔延长的患病率.
- 之前的研究已经确定了心脏能量代谢的候选基因,并建议多不和脂肪酸影响离子通道功能.
- 有限的研究已经探索了代谢物度和QT间隔之间的关系.
研究的目的:
- 为了研究血代谢物度与QT间隔之间的关联.
- 为了确定预测QT间隔变化的特定代谢物.
- 探索这些关联的潜在因果关系和遗传基础.
主要方法:
- 对21056名英国生物库参与者的分析,包括心电图和血代谢物数据.
- 用心率 (QTc) 校正的QT间隔的每代谢物回归分析,并对临床变量进行调整.
- 在独立样本 (N=5304) 中进行复制,并对变量选择和差异解释最小绝对收缩和选择运算符 (LASSO) 回归的应用.
- 门德尔的随机化和局部层面的局部化分析,以评估因果关系和共同的遗传病因.
主要成果:
- 22种代谢物,包括体,脂肪酸和氨基酸,与QTc有显著的关联.
- 最重要的关联包括3-基酸盐,乙和多不和脂肪酸.
- 一个结合代谢物和临床变量 LASSO 模型解释了更多的 QTc 变异 (11.2%) 比单独的临床变量 (7.7%).
- 证据支持酸与脂肪酸的比率和QTc之间的因果关系,在7个QT位点对15种代谢物的同位化.
结论:
- 确定了22种相关代谢物,具有临床相关的效果大小和对QTc间隔变化的遗传支持.
- 报告了多不和脂肪酸的潜在保护作用.
- 这些代谢物可能是获得性和先天性长QT综合征的风险因素,需要进一步调查心律不整风险分层.
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