肠道微生物群的缺失可以通过调节小鼠的铁亡来缓解铁过载引起的结肠炎
1Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu 611130, China; Key Laboratory for Animal Disease-resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu 611130, China.
Journal of advanced research
|December 22, 2024
概括
铁过载会导致肠道炎症和细胞死亡 (铁),使结肠炎恶化. 消除肠道微生物减少了这种铁引起的结肠炎,这表明了针对微生物群的治疗方法.
科学领域:
- 胃肠病学 胃肠病学
- 微生物学 微生物学
- 毒理学 毒理学 毒理学
背景情况:
- 过量的铁会破坏肠道微生物群,并诱导铁亡,导致大肠炎.
- 肠道微生物群在驱动铁过载引起的大肠炎的直接作用及其机制仍然不清楚.
研究的目的:
- 调查肠道微生物是否直接调节铁过载引起的结肠炎.
- 阐明本条例的基本机制.
主要方法:
- 在使用硫酸铁的C57BL/6N小鼠中建立了铁过载模型.
- 使用抗生素和硫酸盐 (DSS) 制造无细菌和大肠炎模型,分别.
- 检查了铁稳态,铁灭标志物 (Xc-系统,Nrf2 / HO-1通道) 和肠道微生物群组成.
主要成果:
- 铁过载破坏了铁的平衡,激活了前炎症,诱导了铁亡,并导致大肠炎.
- 铁过载抑制了Xc-系统,激活了Nrf2/HO-1,促进了铁和大肠炎.
- 通过抑制铁化,消除肠道微生物群减弱的铁过载引起的结肠炎,而不会影响全身炎症.
结论:
- 铁过载会通过铁灭症加剧DSS诱导的大肠炎,并以微生物群依赖的方式增加有害细菌.
- 准肠道微生物群为铁过载引起的大肠炎提供了潜在的治疗策略.
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