在老鼠最大的体力劳动过程中, carotid body 调节氧气吸收的峰值
David C Andrade1, Camila Salazar-Ardiles1,2, Camilo Toledo3
1Exercise Applied Physiology Laboratory, High Altitude Physiology and Medicine Research Center, Biomedical Department, Faculty of Health Sciences, University of Antofagasta, Antofagasta, Chile.
状体 (CB) 状细胞作为代谢传感器,影响运动期间的氧气吸收峰值. 抑制这些细胞降低了运动氧气消耗,但没有影响表现,突出了它们在最大努力中的作用.
科学领域:
- 心血管生理学
- 神经科学
- 运动科学
背景情况:
- 心脏呼吸反应必须与运动期间的代谢需求相匹配.
- 建议使用状体 (CB) 状细胞作为关键的代谢传感器.
- 了解CB在运动代谢中的作用对于优化表现和健康至关重要.
研究的目的:
- 在老鼠运动期间,研究CB球细胞对氧气吸收峰值 () 的贡献.
- 为了确定CB glomus细胞是否作为影响运动能力的代谢传感器.
主要方法:
- 在Wistar京都大鼠中使用腺相关病毒 (AAVs) 和克洛扎- N- 氧化物抑制CB球体细胞.
- 对各种刺激 (NaCN,低氧,乳酸) 的呼吸,化学感应和代谢反应的评估.
- 运动表现的评价和
主要成果:
- 抑制CB细胞降低了休息时的氧气消耗和依赖乳酸的呼吸反应.
- 对NaCN和缺氧的化学传感和呼吸反应显著下降.
- 化学基因抑制CB球体细胞显著降低
结论:
- 在运动期间感知新陈代谢变化时,CB环球细胞起着至关重要的作用.
- 这些细胞在最大努力时调节氧气吸收的峰值.
- CB 作为一种代谢传感器,独立于整体运动性能而影响运动能力.
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