非人类灵长类动物在恒定照明下下垂体-垂体-甲状腺 (HPT) 轴的年龄相关功能特征
N D Goncharova1, A M Ermolaeva2, O A Chigarova2
1Laboratory of Experimental Endocrinology, Kurchatov Complex of Medical Primatology, National Research Centre "Kurchatov Institute", Sochi, Russia. ndgoncharova@mail.ru.
Bulletin of experimental biology and medicine
|September 28, 2024
概括
持续暴露于光线对 rhesus 子的甲状腺激素的影响很小. 然而,它损害了对刺激的甲状腺功能反应,特别是在老年人中.
科学领域:
- 内分泌学 在内分泌学.
- 神经科学是一个神经科学.
- 时间生物学 时间生物学
背景情况:
- 下垂体-垂体-甲状腺 (HPT) 轴调节新陈代谢,对环境线索敏感.
- 现代生活中常见的光暗周期的破坏可能会影响内分泌功能.
- rhesus 子作为人类生理学研究的相关翻译模型.
研究的目的:
- 研究恒定人工光对 rhesus 子HPT轴功能的影响.
- 评估对恒定的光照暴露反应的年龄相关差异.
- 在改变的光线条件下将行为特征与HPT轴功能相关联.
主要方法:
- 雌性 rhesus 子 (年轻的成年人和老年人) 被暴露在持续的 LED 照明中,持续了 4 周.
- 测量了甲状腺刺激激素 (TSH),甲状腺素 (T4) 和三甲状腺素 (T3) 的基本水平.
- 在用甲状腺释放激素 (TRH) 刺激后,评估了甲状腺功能.
- 在整个研究过程中记录了行为观察.
主要成果:
- 恒定的光线没有显著改变任何动物的TSH,T4或T3基底水平.
- 甲状腺功能,当TRH刺激时,显示出明显的下降,特别是在老子中.
- 在恒定的光线下,年龄是甲状腺对TRH反应减弱的重要因素.
- 行为特征与HPT轴功能变化没有显著的相关性.
结论:
- 持续暴露于人工光线,虽然不会影响基底甲状腺激素水平,但可能会损害HPT轴对刺激的反应能力.
- 较老的 rhesus 子更容易受到光引起的甲状腺调节障碍的影响.
- 这些发现突显了长时间暴露于人工光对内分泌健康的潜在风险,特别是在老龄化人口中.
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