产前皮质类固醇暴露会破坏血管免疫相互作用,并损害胎儿丸中的类固醇生成
bioRxiv : the preprint server for biology
|February 9, 2026
概括
产前皮质类固醇治疗与德克萨米他会影响胎儿丸的发育. 这种常见的早产婴儿治疗抑制了雄激素合成,并破坏了免疫血管相互作用,影响男性生殖健康.
科学领域:
- 生殖生物学 生殖生物学
- 发育内分泌学 发展内分泌学
- 免疫学 免疫学 免疫学
背景情况:
- 产前皮质类固醇 (ACS) 治疗,主要使用德甲 (Dex),加速早产婴儿的肺成熟.
- 产前Dex暴露对其他胎儿器官的系统性影响尚不清楚.
- 对男性生殖健康的潜在影响需要调查.
研究的目的:
- 调查产前德克萨米他暴露对胎儿丸发育的影响.
- 揭示德克斯诱导的丸变化的潜在机制.
- 评估ACS治疗的性别特异性和器官特异性影响.
主要方法:
- 使用基于德克萨米他的ACS小鼠模型.
- 分析胎儿丸的莱迪格细胞数量,类固醇生成途径和免疫细胞透.
- 进行了转录基因分析,以确定受影响的基因表达途径.
- 检查胎儿卵巢以评估性别二态效应.
主要成果:
- 产前Dex暴露通过减少莱迪格细胞数量和类固醇基因表达来抑制雄激素合成.
- 德克斯激活了免疫程序,增加了M2巨细胞和IL10信号,促进了内皮扩张.
- 尽管有免疫信号,丸血管结构被破坏,毛细血管密度降低,血管直径增加.
- 转录组分析显示抑制了雄激素反应和胆固醇新陈代谢,免疫和凝血通路的升级.
- 胎儿卵巢基因表达没有受到影响,这表明器官和性别特异性影响.
结论:
- 产前甲暴露会通过通过免疫血管机制抑制雄激素合成,损害胎儿丸的发育.
- 这项研究揭示了ACS治疗对男性生殖健康的新影响.
- 这些发现凸显了需要考虑产前皮质类固醇在肺成熟期之外的潜在广泛影响.
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