抑制Foxo3/Txnip轴通过降低MuRF1的调节来缓解风扇诱导的隔膜功能障碍
1Department of Intensive Care Unit, General Hospital of Ningxia Medical University, No. 804, Shengli South Street, Xingqing District, Yinchuan, 750002, China. shenjia_0711@163.com.
Applied biochemistry and biotechnology
|May 16, 2025
概括
风扇诱导的隔膜功能障碍 (VIDD) 涉及隔膜肌肉的软弱. 抑制Foxo3通路通过减少肌肉缩,炎症和氧化应激来缓解VIDD,提供潜在的治疗标.
科学领域:
- 生理学 生理学 生理学
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 呼吸机诱导的隔膜功能障碍 (VIDD) 是从机械通风 (MV) 中断患者的一个重大挑战.
- 转录因子分叉盒O3 (Foxo3) 在骨肌功能中起作用,可能参与VIDD的发病.
研究的目的:
- 调查Foxo3在VIDD发展中的调控作用和潜在机制.
- 为了确定抑制Foxo3是否可以改善VIDD在体外和体内模型.
主要方法:
- 通过使用压力小鼠肌细胞C2C12细胞建立了体外VIDD模型,通过MTT,TUNEL和西方斑点测试评估活力,细胞亡,炎症,氧化应激和蛋白质表达.
- 使用机械通风的体内老鼠模型,给药Foxo3抑制剂Carbenoxolone (CBX) 以评估其对隔膜功能,缩,炎症和氧化应激的影响.
主要成果:
- 在体外,压力损害了肌细胞活力,增加了细胞亡,炎症,氧化压力和活性氧物种 (ROS) 释放,同时激活了Foxo3和Txnip通路.
- 福克索3抑制保护肌细胞细胞从压力诱导的功能障碍,通过Txnip和Murf1.1的下调调节介导的效果.
- 在体内,Foxo3抑制减轻了MV诱导的隔膜缩,减少了炎症和氧化应激,并改善了大鼠的收缩能力.
结论:
- 福克索3的激活通过促进肌细胞亡,炎症和氧化应激,有助于VIDD.
- 抑制Foxo3通过降低Txnip和Murf1等关键通路的调节来缓解VIDD的治疗潜力,从而保持隔膜功能.
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