母亲暴露于β-Cypermethrin会通过因氧化应激而引起的热囊细胞功能障碍扰乱胎盘发育
Xiaoli Tang1, Yanqing Geng2, Rufei Gao1
1School of Public Health, Chongqing Medical University, Chongqing, China; Joint International Research Laboratory of Reproduction & Development, Chongqing Medical University, Chongqing, China.
Toxicology
|April 6, 2024
概括
母亲暴露于β-Cypermethrin (β-CYP) 杀虫剂会导致不良妊娠结果和胎盘损伤. β-CYP通过氧化应激和Notch通路的抑制诱导热囊细胞功能障碍,突出反应性氧物种作为干预目标.
科学领域:
- 生殖毒理学 生殖毒理学
- 发展生物学 发展生物学
- 环境健康 环境健康
背景情况:
- β-Cypermethrin (β-CYP) 是一种广泛使用的杀虫剂,具有潜在的生殖健康风险.
- β-CYP 对胎盘发育和热囊细胞功能的影响尚不清楚.
- 胎盘对于母胎沟通和胚胎发育至关重要.
研究的目的:
- 调查母体 β-CYP 暴露对胎盘发育和 trofhoblast 功能的影响.
- 阐明β-CYP诱导的生殖毒性的潜在分子机制.
- 确定潜在的干预目标,以减轻β-CYP的毒性.
主要方法:
- CD-1小鼠模型暴露于不同剂量的β-CYP (1,10,20 mg/kg.bw).
- 在体外研究中,使用暴露于β-CYP (12.5,25,50,100微米) 的人体胆固醇热囊细胞衍生的HTR-8/SVneo细胞.
- 评估胎盘结构,热囊细胞分化,亡,迁移,入侵,氧化应激和Notch信号通路活动.
主要成果:
- 孕产妇暴露于β-CYP导致孕产妇体重增加,子宫体重减少,以及不良妊娠结果 (子宫出血,胚胎再吸收).
- β-CYP导致胎盘发育异常,包括结构失衡和血管化失调,以及热囊细胞异常 (胀,厚层).
- 在体外,β-CYP诱导了热细胞亡,减少了迁移/入侵,增加了氧化应激,并抑制了Notch信号通路,N-乙半氨酸部分恢复了该信号通路.
结论:
- 暴露于β-CYP会破坏胎盘发育和热囊细胞功能,导致不良妊娠结果.
- 氧化应激和诺奇信号通路的抑制是 β-CYP 生殖毒性的关键机制.
- 活性氧物种是减轻β-CYP诱导的生殖毒性的潜在治疗目标.
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