怀孕相关的出血和遗传学:子宫肌肉和孕激素信号通路中的五种序列变异与产后出血有关
David Westergaard1,2,3, Valgerdur Steinthorsdottir4, Lilja Stefansdottir4
1Department of Obstetrics and Gynaecology, Copenhagen University Hospital Hvidovre, Hvidovre, Denmark.
medRxiv : the preprint server for health sciences
|August 30, 2023
概括
基因分析确定了五个与产后出血 (PPH) 相关的位点,这是产妇死亡的主要原因. 然而,早期妊娠出血显示出复杂的遗传联系与各种特征,而不是特定的位置.
科学领域:
- 遗传学 遗传学 是一个
- 产科 产科 产科 产科 产科
- 孕产妇和胎儿医学 孕产妇和胎儿医学
背景情况:
- 产后出血 (PPH) 是导致产妇死亡的主要原因,而早期妊娠出血与流产有关.
- 了解妊娠相关出血的遗传基础对于改善孕产妇和胎儿健康结果至关重要.
研究的目的:
- 为了研究与妊娠相关出血相关的遗传变异.
- 确定导致产后出血 (PPH) 的遗传位置.
- 探索早期妊娠出血和其他人类特征之间的遗传相关性.
主要方法:
- 对21512例PPH病例和259500例对照进行了元分析,以确定相关的遗传位点.
- 进行功能注释分析以识别候选基因 (例如,HAND2,TBX3) 和它们的调节元件 (孕激素受体结合部位).
- 使用大型病例 (28,898) 和对照 (302,894) 队列分析了早期妊娠出血的遗传相关性.
主要成果:
- 确定了五个与PPH显著相关的遗传位点,其中在前受体结合部位附近的变异.
- 候选基因HAND2,TBX3和RAP2C/FRMD7在三个PPH位点被发现.
- 早期妊娠出血没有显示全基因组关联信号,但与出生体重,妊娠时间和子宫纤维瘤等特征具有强烈的遗传相关性,这表明多基因和类效应.
结论:
- 产后出血似乎与子宫肌肉失调有关,这一点得到了遗传发现的支持.
- 妊娠早期出血是一种复杂的特征,受到多种遗传因素的影响,并可能受到更广泛的健康和社会经济决定因素的影响.
- 这些发现突出了早期妊娠出血和PPH的独特遗传结构,为未来的研究和临床策略提供了信息.
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