在严重预先怀孕症中减少细胞外膀瓦索林 血介导内皮功能障碍
Saravanakumar Murugesan1, Dylan R Addis1, Hanna Hussey1
1Department of Anesthesiology and Perioperative Medicine, Division of Molecular and Translational Biomedicine, School of Medicine University of Alabama at Birmingham Birmingham AL USA.
Journal of the American Heart Association
|March 21, 2025
概括
细胞外囊泡 (EVs) 中的素水平降低可能导致妊娠前,这是一个严重的妊娠并发症. 在细胞和动物模型中,恢复EV中的血管素改善了血管功能,这表明了孕前的新治疗点.
科学领域:
- 产科和妇科 产科和妇科
- 血管生物学 血管生物学
- 细胞外囊泡 细胞外囊泡
背景情况:
- 孕前症影响全球5-8%的怀孕,对母亲和新生儿健康造成重大风险.
- 孕前病原体的确切机制在很大程度上是未知的.
- 这项研究探讨了瓦索林在妊娠前中的作用,重点关注其在细胞外囊泡 (EV) 中的存在以及对血管健康的影响.
研究的目的:
- 为了调查瓦索林在产前症发病过程中的作用.
- 检查预先怀孕症中细胞外囊泡 (EVs) 中的素水平.
- 评估瓦索林对血管功能的影响.
主要方法:
- 无偏向的蛋白质组学在尿液衍生的EVs上进行,这些EVs来自预先缩性和正常压力的怀孕.
- 瓦索林表达量化在尿路EVs,血EVs和胎盘组织中.
- 用小鼠大动脉环和人类大动脉内皮细胞评估了血管功能;在细胞中操纵了瓦索林,随后进行了RNA测序.
主要成果:
- 在尿路EV,血EV和患有重度孕前的妇女的胎盘组织中,瓦索林水平显著降低.
- 产前怀孕的EVs损害了内皮细胞迁移和大动脉环血管松.
- 素的过度表达抵消了EVs对血管功能的有害影响,改变了与血管生成和细胞迁移相关的基因.
结论:
- 这些发现表明,通过EV运输的血管素在调节血管功能方面起着至关重要的作用.
- 与EV相关的素的减少可能是导致孕前症发展的关键机械因素.
- 准EV输送的素是孕前的潜在治疗策略.
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