化物对甲状腺功能的影响和cyprinus carpio的组织病理学:对水生生态系统的影响
Jai Sankar1, Yesudass Thangam1, Sivaprakasham Umamaheswari1
1PG and Research Department of Zoology, J.K.K. Nataraja College of Arts and Science, Komarapalayam, Tamil Nadu 638 183, India.
Toxicology reports
|March 17, 2025
概括
淡水中的化物污染会破坏内分泌系统. 这项研究表明,高水平的化物显著降低甲状腺激素 (T4和T3) 和改变甲状腺组织学在模型鱼,Cyprinus carpio.
科学领域:
- 环境毒理学环境毒理学
- 内分泌学 在内分泌学.
- 生态毒理学 生态毒理学
背景情况:
- 淡水中的化物污染对水生生物构成重大威胁.
- 化物对内分泌的干扰可能会干扰重要的生理过程.
研究的目的:
- 调查化物暴露对甲状腺激素水平和甲状腺组织学在Cyprinus carpio中的影响.
- 评估化物度和甲状腺功能障碍之间的剂量反应关系.
主要方法:
- 赛普林斯·卡皮奥 (Cyprinus carpio) 暴露于三种亚致死的化物度 (1,5,10毫克/升).
- 甲状腺素 (T4) 和三甲状腺素 (T3) 的血水平在多个时间点 (7,14,21和35天) 测量.
- 在光显微镜下检查了甲状腺组织学.
主要成果:
- 观察到显著的T4和T3血水平的剂量依赖性下降.
- 到第35天,含量最高的组 (10 mg/L) 与对照组相比,T4减少了42%,T3减少了50%.
- 组织学变化包括更小的卵泡大小,上皮缩,甲状腺的增生,特别是在更高的化物度.
结论:
- 高度化物暴露在Cyprinus carpio中起到强烈的内分泌干扰作用,损害甲状腺激素生物合成和功能.
- 这些干扰可能会对鱼类的生长和繁殖产生不利影响.
- 研究结果强调,需要在淡水息地制定更严格的化物标准,以保护水生生态系统.
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