暴露于triclosan会通过衰老和IGF-1通路抑制加剧肌肉消耗:一项综合流行病学和实验研究
Zhenlin Yang1, Liangshi Hao2, Amila Kuati3
1Department of Gerontology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China; Shi's Center of Orthopedics and Traumatology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China.
Ecotoxicology and environmental safety
|October 4, 2025
概括
暴露于triclosan与减少肌肉质量有关,可能通过氧化应激和IGF-1通路. 补充IGF-1可以抵消这些对肌肉健康的负面影响.
科学领域:
- 环境健康 环境健康
- 毒理学 毒理学 毒理学
- 肌肉生理学 肌肉生理学
背景情况:
- 三是一种常见的环境污染物,存在于消费品和人体尿液中.
- 之前的研究表明,triclosan可能会损害肌肉力量,但缺乏人口层面的数据和机制.
- 了解 triclosan 对肌肉健康的影响对于公共健康至关重要.
研究的目的:
- 在大量人群中调查 triclosan 暴露与肌肉质量之间的关联.
- 阐明三桑诱导的肌肉衰竭的潜在机制.
- 探索潜在的治疗策略,以对抗 triclosan 对肌肉的不良影响.
主要方法:
- 分析了2878名参与国家健康和营养检查调查 (NHANES) 的数据.
- 生物标志物分析以确定三桑作用的调解者,包括氧化应激标志物.
- 在体外和体内实验以确定胰岛素样生长因子1 (IGF-1) 和相关信号通路 (Akt/mTOR) 的作用.
- 分子对接和动力学模拟,以评估triclosan和IGF-1之间的直接相互作用.
主要成果:
- 较高的尿 triclosan 水平与尾骨肌肉质量指数 (ASMI) 的降低有关.
- 胆红素被确定为氧化应激的关键调解者,将三香与肌肉质量减少联系起来.
- 通过抑制IGF-1/Akt/mTOR通路,发现triclosan通过氧化失衡和衰老加速肌肉消耗.
- 三克洛桑和IGF-1之间的直接相互作用被计算预测.
- 给予IGF-1蛋白有效缓解了三素诱导的肌肉衰竭,氧化应激和衰老.
结论:
- 暴露于triclosan对肌肉健康有害,导致肌肉质量减少和加速肌肉衰竭.
- 该机制涉及氧化应激,肌肉衰老和IGF-1信号通路的破坏.
- IGF-1蛋白显示出作为对抗 triclosan 诱导的肌肉损伤的对策的承诺.
- 调查结果强调,需要制定政策来减少环境中的三暴露,并保护肌肉健康.
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