双A诱导的多囊性卵巢综合征 (PCOS) 在老鼠中具有荷尔蒙和代谢影响
Mehjbeen Javed1, Suramya1, Anuradha Mangla1
1Molecular Toxicology Laboratory, Department of Medical Elementology and Toxicology, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi 110062, India.
Reproductive toxicology (Elmsford, N.Y.)
|November 16, 2024
概括
环境雌激素双甲 (BPA) 暴露可以诱导多囊卵巢综合征 (PCOS) 在老鼠,导致生殖和代谢障碍. 低剂量的BPA在诱导高雄性质和胰岛素耐药性方面更强大,突出了环境风险.
科学领域:
- 内分泌学 在内分泌学.
- 生殖毒理学 生殖毒理学
- 环境健康 环境健康
背景情况:
- 多囊性卵巢综合征 (PCOS) 是生殖年龄女性普遍存在的内分泌疾病.
- 环境因素越来越多地与PCOS发病率的上升有关.
- 双A (BPA) 是一种环境雌激素,是导致生殖和代谢功能障碍的潜在因素.
研究的目的:
- 评估BPA在诱导大鼠PCOS中的复发性毒性作用.
- 评估BPA暴露对荷尔蒙和代谢的影响.
- 为了确定BPA在诱发PCOS类症状中的剂量依赖功效.
主要方法:
- 鼠被暴露于低 (50μg/kg) 和高 (500μg/kg) 的BPA剂量.
- 分析了雌激素周期,卵巢形态,子宫组织学和血清激素水平.
- 激素测定包括17β雌激醇,孕,雄激素,AMH,LH,FSH和TSH.
- 评估了代谢参数,如葡萄糖,胰岛素和胰岛素抵抗标志物 (HOMA-IR,HOMAβ).
主要成果:
- 在66.6% (低剂量) 和50% (高剂量) 的老鼠中,BPA暴露破坏了雌性周期.
- 卵巢病理包括囊性和动性卵泡;在高剂量组中,黄体体不存在.
- BPA显著增加了雄激素水平,AMH,LH/FSH比率和TSH,表明过高雄激素和甲状腺功能低下.
- 低剂量的BPA诱导高血糖,高胰岛素和胰岛素抵抗 (HOMA-IR,HOMAβ).
- 在暴露于BPA的组中,子宫组织显示出增生和增大.
结论:
- 在老鼠中,BPA暴露可以诱导PCOS类症状和生殖毒性.
- 低剂量的BPA在引起高雄激素状态和代谢障碍方面表现出更大的功效.
- 乙的雌激素性质有助于生殖和代谢失调,这表明它是PCOS的致病因素.
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