饮食中的蛋白质,氨基酸和胰岛素耐药性:一个迷你回顾
Melynda S Coker1, Robert H Coker1
1Montana Center for Work Physiology and Exercise Metabolism, University of Montana, Missoula, MT, United States.
Frontiers in nutrition
|November 5, 2025
概括
饮食中的蛋白质摄入量会影响胰岛素抵抗. 基本氨基酸 (EAA) 支持肌肉健康和新陈代谢,而过多的分支链氨基酸 (BCAA) 可能会损害胰岛素敏感性.
科学领域:
- 代谢健康 代谢健康
- 营养科学 营养科学
- 内分泌学 在内分泌学.
背景情况:
- 蛋白质摄入量对胰岛素抵抗的作用是一个日益增长的研究领域.
- 骨肌肉对葡萄糖处理的显著贡献突显了减肥期间肌肉保存的重要性.
- 基本氨基酸 (EAA) 和完整的蛋白质通过mTOR信号影响肌肉蛋白质合成.
研究的目的:
- 探索蛋白质摄入量,特别是EAA和分支链氨基酸 (BCAA) 对胰岛素抵抗的双重影响.
- 阐明EAA和BCAA影响胰岛素敏感性,肌肉新陈代谢和腹感的机制.
主要方法:
- 对有关蛋白质摄入量,氨基酸代谢和胰岛素耐药性的现有文献的综述.
- 对所涉及的信号通路的分析,包括哺乳动物的拉帕素 (mTOR) 标.
- 检查食后和吸收后氨基酸度的影响.
主要成果:
- 增加蛋白质摄入量有助于在减肥期间维护肌肉,这对于葡萄糖处理至关重要.
- 饭后EAA促进肌肉蛋白质合成,和和线粒体功能,可能改善胰岛素敏感性.
- 吸收后BCAA的慢性升高与mTOR激活,胰岛素作用受损和脂毒性有关.
结论:
- 吃饭后EAA充当了合成体调解剂,增强了肌肉重塑,和和代谢调节.
- 慢性BCAA升高,特别是在高胰岛素血症和营养过载的条件下,可能会导致胰岛素抵抗病原体.
- 食蛋白对胰岛素敏感性的影响是复杂的,取决于氨基酸的类型,它们的时间和代谢背景.
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