肠道微生物胺促进肠道损伤和与代谢功能障碍相关的脂肪性肝病的发展
Jia Wei1,2,3, Shuangquan Liu1, Jiayou Luo2
1Department of Clinical Laboratory Medicine, Institution of Microbiology and Infectious Diseases, Hunan Province Clinical Research Center for Accurate Diagnosis and Treatment of High-incidence Sexually Transmitted Diseases, The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, China.
BMC medicine
|November 27, 2025
概括
来自Enterococcus faecium B6的肠道微生物胺破坏了肠道屏障,促进了儿童的代谢功能障碍相关的脂肪性肝病 (MASLD). 高胺水平与增加MASLD风险有关,这表明它是治疗目标.
科学领域:
- 微生物学 微生物学
- 肝病学 肝病学是一种肝病学.
- 儿科 儿科 儿科
背景情况:
- 肠道微生物群和肠道损伤与儿科代谢功能障碍相关的脂肪性肝病 (MASLD) 有关.
- 肠道微生物代谢物,如铁胺,在儿科MASLD中的特定作用尚不清楚.
研究的目的:
- 调查肠道微生物胺在肠道损伤和儿童MASLD发育中的作用.
- 探索氨酸对MASLD进展的影响的潜在分子机制.
主要方法:
- 使用Enterococcus faecium B6和提拉胺的小鼠模型来评估肠道损伤和MASLD.
- 在小鼠肝脏上进行了转录组学和蛋白组学,并在儿科队列的便和血清样本上进行了向代谢组学.
- 在医院和学校的儿科群体中验证了提拉胺与MASLD风险的关联.
主要成果:
- 提拉胺破坏了肠道屏障,并增加了小鼠的透性,促进了MASLD表型.
- 多omics分析揭示了PPAR信号通路参与氨酸诱导的脂质积累.
- 便和血清中提升的提拉胺水平与儿童患MASLD的风险更高显著相关 (OR:3.65).
结论:
- 肠道微生物胺诱导肠道损伤,并有助于MASLD的发展.
- 提拉胺与儿童的MASLD风险有关,强调其致病作用.
- 这项研究为MASLD的发病机制提供了洞察力,并建议提拉胺作为潜在的治疗点.
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