母体血皮质醇对后代出生体重的影响:孟德尔随机化研究
W D Thompson1,2, R M Reynolds3, R N Beaumont4
1Department of Clinical and Biomedical Sciences, Faculty of Health and Life Sciences, University of Exeter, Exeter, UK. wdt204@exeter.ac.uk.
BMC pregnancy and childbirth
|January 15, 2024
概括
怀孕期间母体皮质醇水平较高可能导致出生体重较低. 这项研究使用遗传分析来探索因果关系,表明对婴儿发育的潜在影响.
科学领域:
- 生殖生物学 生殖生物学
- 人类遗传学 人类遗传学
- 内分泌学 在内分泌学.
背景情况:
- 观察性研究将较高的母体皮质醇与较低的后代出生体重联系起来.
- 在观察性研究中潜在的残留混需要进一步调查.
研究的目的:
- 通过使用孟德尔随机化来研究母亲循环皮质醇水平和后代出生体重之间的因果关系.
- 解决之前的观察性研究中存在的潜在混因素.
主要方法:
- 采用双样本的孟德尔随机化 (MR),使用与早晨血皮质醇相关的遗传变异.
- 利用来自大型队列 (高达N=406,063) 的全基因组关联研究 (GWAS) 数据,用于母体皮质醇和后代出生体重.
- 进行了灵敏度分析,包括链接不平衡调整和性测试.
主要成果:
- 孕产妇的皮质醇水平显示出与出生体重较低的估计相关性 (例如,皮质醇每1个SD增加每50克).
- 其他分析也得出了类似的结果,支持了主要的发现.
- 有证据表明,孕期皮质醇对孕期皮质醇的影响较弱,这表明潜在的偏差.
结论:
- 研究结果表明,较高的孕产妇早晨血皮质醇对后代降低出生体重的因果关系.
- 需要更多的基因仪器进行进一步的研究,以完善估计和解决潜在的偏见.
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