氧化和性压力是电离辐射和糖尿病引起的血管功能障碍的基础
Anatoly Soloviev1, Vadym Sydorenko2
1Department for Pharmacology of Cellular Signaling Systems and Experimental Therapeutics, Institute of Pharmacology and Toxicology, National Academy of Medical Science, Kyiv, Ukraine. tonysolpharm@gmail.com.
Cardiovascular toxicology
|June 25, 2024
概括
过多的活性氧和物种 (ROS / RNS) 造成的氧化应激会损害细胞离子通道,导致糖尿病和辐射暴露等疾病的血管功能障碍. 这种不平衡会破坏正常的细胞功能和信号传递,影响整体血管健康.
科学领域:
- 生物化学 生化学
- 细胞生物学 细胞生物学
- 身体生理学 身体生理学
背景情况:
- 氧化应激源于反应性氧物种 (ROS) 和反应性物种 (RNS) 生产与身体抗氧化能力之间的不平衡.
- ROS和RNS是正常新陈代谢中至关重要的信号分子,但在高度下变得有毒,破坏细胞功能.
- 诸如高血糖和电离辐射等因素会诱导ROS/RNS的积累,损害包括离子通道和输送器在内的细胞组件.
研究的目的:
- 研究氧化应激,特别是ROS和RNS在血管功能障碍发展中的作用.
- 阐明ROS和RNS影响对血管健康至关重要的离子通道和输送器的机制.
- 了解ROS/RNS不平衡对血管疾病病变的贡献.
主要方法:
- 在各种压力条件下分析ROS和RNS产量.
- 研究ROS和RNS对关键离子通道 (例如Na+/K+-ATPase,BKCa,TRP通道) 的影响.
- 评估过氧酸盐 (ONOO-) 形成及其对细胞信号传递和NO生物可用性的影响.
主要成果:
- 氧化应激显著损害离子通道和输送器,包括Na+/K+-ATPase,BKCa和TRP通道.
- ROS和RNS之间的相互作用,特别是过氧酸盐 (ONOO-) 的形成,导致细胞组件的氧化和信号通路的破坏.
- 增加ROS和ONOO-形成导致氧化 (NO) 的生物可用性降低,导致内皮功能障碍.
结论:
- 在ROS和RNS的不平衡是血管功能障碍的发病的一个关键因素.
- ROS和RNS直接影响关键的膜离子通道和输送器的功能.
- 了解这些机制可以了解与糖尿病,辐射暴露和其他疾病相关的血管并发症.
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