葡萄糖皮质体系统:线粒体功能,内皮平衡和肠道屏障完整性的多方面的调节者
G Umberto Meduri1, Anna-Maria G Psarra2
1Department of Medicine and Pharmaceutical Sciences, University of Tennessee Health Science Center, Memphis, Tennessee, United States.
Seminars in respiratory and critical care medicine
|September 17, 2025
概括
通过葡萄糖皮质体受体α (GRα) 传递葡萄糖皮质体 (GC) 信号对于重症期间恢复平衡至关重要. GRα信号保护线粒体,血管内皮和肠道屏障,为器官功能障碍提供治疗点.
科学领域:
- 生物化学和分子生物学
- 关键护理医学 关键护理医学
- 内分泌学 在内分泌学.
背景情况:
- 危急疾病会导致系统性障碍,包括能量缺陷,氧化应激,内皮损伤和肠道屏障功能障碍.
- 线粒体,血管内皮和肠道屏障是恢复平衡的关键接口.
- 葡萄糖皮质体 (GC) 信号传递,由葡萄糖皮质体受体α (GRα) 介导,调节细胞代谢,免疫反应和血管完整性.
研究的目的:
- 探索GC-GRα信号传递在缓解关键疾病期间器官功能障碍中的作用.
- 突出GC-GRα信号网络中的治疗点,以防止器官损伤.
- 研究GC-GRα信号如何影响线粒体,血管内皮和肠道屏障功能.
主要方法:
- 审查关于GC-GRα信号通路的现有文献.
- 分析GC-GRα在线粒体功能中的作用,包括ATP生产和ROS调节.
- 在危急疾病模型中检查GC-GRα对内皮完整性和肠壁功能的影响.
主要成果:
- GC-GRα信号传递促进了线粒体生物发生,增强了抗氧化防御,并保持了对代谢恢复至关重要的氧化还原平衡.
- GC-GRα激活通过抑制NF-κB,减少细胞因子的产生和增加紧密结合蛋白来恢复内皮完整性.
- GC-GRα信号通过调节紧密的结点和微生物群组成来保护肠道屏障的完整性.
结论:
- 集成的GC-GRα信号网络对于在严重疾病中维持平衡至关重要.
- 准GC-GRα通路可以减轻线粒体功能障碍,内皮损伤和肠道屏障损害.
- 结合GC疗法和微生物群干预措施有望改善重症患者的治疗结果.
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