产前暴露于普雷尼松会扰乱胎儿脏的发育及其特征
Zhiping Xia1, Songdi Wang1, Wen Wang1
1Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China; Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China.
Journal of environmental sciences (China)
|June 6, 2024
概括
产前暴露于普得尼松 (PPE) 可能会损害胎儿脏发育,特别是在雌性胎儿中. 这项研究揭示了怀孕期间的性别特异性影响和时间脆弱性.
科学领域:
- 环境毒理学环境毒理学
- 发育生物学是发展生物学.
- 生殖毒理学 生殖毒理学
背景情况:
- 普雷德尼松是一种合成的葡萄糖皮质激素,是新兴的环境污染物.
- 产前暴露于普德尼松 (PPE) 可能对胎儿发育,特别是脏发育构成风险.
- 个人防护设备对胎儿脏发育的具体影响尚不清楚.
研究的目的:
- 为了研究产前暴露于普雷尼松对小鼠胎儿脏发育的影响.
- 确定PPE对胎儿脏的剂量依赖和时间依赖的影响.
- 探索PPE诱导的胎儿脏发育毒性的性别特异性.
主要方法:
- 怀孕的小鼠在不同的妊娠期内被给予不同剂量的普得尼松.
- 用HE染色检查胎儿脏的形态变化.
- 进行基因表达分析以评估细胞,细胞,管和收集管道的标记物.
- 在女性胎儿脏中研究了关键的发育信号通路 (Six2,Hnf1β,Hnf4α,Wnt9b,GDNF,Notch).
主要成果:
- 个人防护设备诱导胎儿脏张症,其特征是大的曼囊空间和减少的球毛细管网络.
- 细胞和中细胞标记物的表达减少,而管和收藏管标记物的表达增加.
- 较高剂量,长期暴露和女性胎儿的效果更为严重.
- PPE改变了女性胎儿脏的关键基因表达,包括Six2,Hnf1β,Hnf4α,Wnt9b,GDNF和Notch信号传递.
结论:
- 产前暴露于普雷尼松会对胎儿脏产生显著的发育毒性,并具有显著的性别特异性影响.
- 怀孕期间暴露的时间会影响脏发育毒性的严重程度.
- 普雷尼松对胎儿脏发育的影响凸显了怀孕期间环境葡萄糖皮质激素暴露的担忧.
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