拜卡林通过调节核因子E2相关因子2/氨酸过氧化酶4信号通路介导的铁亡来缓解肠道缺血-再输液损伤
1Department of Critical Care Medicine, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang City, Hunan Province, China.
概括
拜卡林通过激活Nrf2-Gpx4通路来保护肠道受伤,减少铁过载和铁. 这项研究证明了baicalinalin.
科学领域:
- 生物化学和分子生物学
- 胃肠病学和肝病学 胃肠学和肝病学
- 药理学和毒理学 药理学和毒理学
背景情况:
- 肠道缺血-再输液 (II/R) 损伤是一种关键状况,与显著的组织损伤相关.
- 铁,一种编程细胞死亡的形式,以及铁沉积与II/R病原发生有关.
- 核因子E2相关的因子2 (Nrf2) 和谷氨过氧化酶4 (Gpx4) 信号通路在细胞防御氧化应激和铁亡中起着关键作用.
研究的目的:
- 调查贝卡林 (BA) 是否减轻了II/R损伤中的肠组织损伤.
- 为了确定贝卡林是否在II/R期间调节Nrf2-Gpx4信号通路.
- 在肠道损伤的背景下,评估贝卡林对铁沉积和铁的作用.
主要方法:
- 建立了体内 (II/R大鼠模型) 和体内 (低氧-葡萄糖缺乏/低氧化OGD/R模型) 系统.
- 使用HE染色和探针染色评估肠道损伤和铁过载.
- 量化基因和蛋白质表达 (Nrf2,Gpx4,xCT,紧结蛋白),氧化应激标志物 (ROS,MDA),细胞活力 (CCK-8) 和线粒体膜潜力.
主要成果:
- 在II/R大鼠中,拜卡林治疗显著减轻了肠道损伤,减少了铁过载,并降低了炎症和氧化应激标志物.
- 在体外,贝卡林减弱了OGD/R诱导的铁过载,保护了细胞活力,并保留了线粒体膜潜力.
- 贝卡林激活了Nrf2-Gpx4信号通路,这对于其对铁过载和细胞损伤的保护作用至关重要,因为该通路的抑制抵消了益处.
结论:
- 拜卡林通过激活Nrf2-Gpx4信号通路,对肠道缺血-再输液损伤产生保护作用.
- 巴伊卡林有效地减少铁沉积和铁,从而减轻II/R诱导的肠损伤.
- 巴伊卡林代表了一种潜在的治疗药物,用于管理肠道缺血-再输液损伤.
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