产前维生素C对正常成长的羊和生长受限制的羊的肺部发育有不同的影响
Erin V McGillick1,2, Sandra Orgeig3, Beth J Allison4
1Early Origins of Adult Health Research Group, Health and Biomedical Innovation, Adelaide, Australia. Erin.McGillick@unisa.edu.au.
Pediatric research
|February 25, 2025
概括
孕妇在怀孕期间服用维生素C补充剂会对胎儿肺部发育产生不同的影响. 虽然它对正常的胎儿有好处,但它对缺氧胎儿的影响有限,这是由于仅仅缺氧的最大上调.
科学领域:
- 产科和妇科 产科和妇科
- 新生儿生理学 新生儿生理学
- 胎儿医学 胎儿医学
背景情况:
- 慢性低氧症是胎儿生长限制的关键因素,影响胎儿肺部发育.
- 在低氧妊娠中,母亲的抗氧化疗法有利于后代的心血管健康.
- 产前抗氧化剂对生长受限胎儿肺部成熟的影响尚不清楚.
研究的目的:
- 研究母体维生素C对慢性缺氧,生长受限制的胎儿羊肺成熟标志物的影响.
- 为了比较正常和缺氧胎儿羔羊对产前维生素C的反应.
主要方法:
- 在孕期晚期,母羊每天接受维生素C (200 mg/kg IV) 或盐水,持续一个月.
- 慢性胎儿缺氧和生长限制是通过将孕母羊暴露在怀孕105-138天的10%O2中引起的.
- 肺成熟的分子标志物在正常性和缺氧性胎儿中被分析.
主要成果:
- 产前维生素C对调节表面活性剂成熟,运输和缺氧信号的基因产生了差异性影响.
- 低毒性胎儿与正常性胎儿相比,对维生素C的反应有限.
- 这表明,仅慢性缺氧就能最大限度地提高这些分子通路的调节.
结论:
- 产前维生素C治疗对胎儿的肺部发育有不同的影响,取决于氧化状态.
- 缺氧胎儿的有限反应表明,维生素C可能不会进一步增强已经被缺氧最大限度地刺激的肺成熟路径.
- 了解这些差异性影响对于开发针对性产前干预措施来治疗复杂怀孕至关重要.
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