母亲的体重指数和第一季度的胎盘 (血管) 发育
Nicole Schenkelaars1, Sam Schoenmakers1, Marijke M Faas2
1Department of Obstetrics and Gynecology, Erasmus MC, University Medical Center, Rotterdam, the Netherlands.
Placenta
|January 10, 2025
概括
孕产妇的肥胖与妊娠早期的胎盘体积减少和血管发育有关. 这些发现表明,肥胖影响胎盘生长从头三个月.
科学领域:
- 产科和妇科 产科和妇科
- 孕产妇和胎儿医学 孕产妇和胎儿医学
- 发展生物学 发展生物学
背景情况:
- 孕产妇的肥胖是妊娠并发症的危险因素,如妊娠高血压障碍 (HDP) 和胎儿生长限制.
- 胎盘对于胎儿发育至关重要,但与母亲肥胖相关的早期生长尚未得到充分研究.
- 以前的研究主要通过产后体重来评估胎盘生长,可能错过了肥胖的早期影响.
研究的目的:
- 调查孕妇的体重指数 (BMI) 与胎盘大小和妊娠第一季度血管发育之间的关联.
- 探索母亲的BMI如何影响妊娠早期的胎盘体积 (PV) 和子宫胎盘血管体积 (uPVV) 轨迹.
主要方法:
- 一项前性队列研究包括870名女性,她们的BMI是在怀孕10周之前测量出来的.
- 经阴道3D功率多普勒超声波在妊娠7周,9周和11周使用,以量化PV和PVV.
- 混合效应模型被用来分析BMI和胎盘体积轨迹之间的关联,并根据相关的共变量进行调整.
主要成果:
- 孕产妇的BMI显示出与第一季度的胎盘体积有显著的非线性关联 (p=0.022).
- 体重指数≥34kg/m2的女性在头三个月表现出胎盘体积的减少 (ΔPV=-0.070,p=0.039).
- 在母亲的BMI和子宫胎盘血管体积 (β=-0.027,p<0.001) 之间观察到显著的负相关性. 这种关联甚至在排除了开发HDP的女性之后也持续存在.
结论:
- 增加的母体BMI与第一季度的子宫胎盘血管体积减少有关.
- 在肥胖女性 (BMI ≥34 kg/m2) 中,胎盘体积也在怀孕早期减少.
- 这些结果表明,肥胖引起的胎盘发育的组织特异性变化始于妊娠的第一季度.
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