肠道微生物群的缺陷通过影响C57BL/6J小鼠的生物积累和生物转化来加剧引起的毒性
Qianying Liu1, Yuenan Liu1, Jiazhen Zhang1
1Department of Occupational and Environmental Health and State Key Laboratory of Environmental Health for Incubating, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
概括
肠道微生物组通过减少在器官中的积累来保护哺乳动物免受毒性. 这项研究表明,肠道微生物会代谢,防止肝脏,脏和大脑受损.
科学领域:
- 环境毒理学环境毒理学
- 微生物学 微生物学
- 哺乳动物的新陈代谢
背景情况:
- 肠道微生物群影响的新陈代谢和哺乳动物的毒性.
- 以前的研究表明,肠道微生物群在毒性中的作用是相互矛盾的.
- 了解肠道微生物群在生物积累和毒性中的作用至关重要.
研究的目的:
- 研究肠道微生物群在生物积累,生物转化和器官毒性的作用.
- 确定肠道微生物群如何影响组织和便中的含量.
- 评估肠道微生物群对引起的器官损伤的影响.
主要方法:
- 使用抗生素尾酒 (AVNM) 建立了肠道微生物群缺乏模型.
- 暴露于常规和肠道微生物群缺乏的C57BL/6J小鼠的甲 (NaAsO2) 4周.
- 分析了总 (tAs) 水平,代谢物和器官的病理变化.
主要成果:
- 与抗生素治疗小鼠相比,传统小鼠在组织中总含量显著降低.
- 酸 (AsV) 是常规小鼠的主要代谢物,而二甲基化物 (DMA) 在缺乏的小鼠中占主导地位.
- 接受抗生素治疗的小鼠表现出更严重的肝脏,脏和大脑损伤,包括亡和IBA-1水平的增加.
结论:
- 肠道微生物群在肝脏,脏和大脑中起着保护性作用,防止引起的毒性.
- 肠道微生物群促进的代谢,减少其在宿主组织中的积累.
- 肠道微生物群对酸 (AsIII) 生物转化为AsV是一个关键的保护机制.
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