缺氧如何影响小鼠微生物群代谢?
Ainiwaer Ailizire1, Xiaojing Wang2, Yan Ma3,4
1Department of Public Health, Qinghai University School of Medicine, Xining, China.
Frontiers in microbiology
|October 16, 2023
概括
缺氧和肥胖会影响小鼠的肠道微生物群多样性和便代谢物. 肥胖小鼠减少了肠道微生物群的多样性,与肥胖和缺氧相关的特定细菌影响了新陈代谢.
科学领域:
- 微生物学 微生物学
- 代谢学 代谢学 代谢学
- 动物模型 动物模型
背景情况:
- 肠道微生物群在宿主新陈代谢和健康中起着至关重要的作用.
- 肥胖和低氧环境可以显著改变肠道微生物群的组成和功能.
- 了解这些相互作用对于开发有针对性的干预措施至关重要.
研究的目的:
- 在低氧条件下研究小鼠肠道微生物群和便代谢物之间的关系.
- 探索肥胖和高海拔如何影响肠道微生物群多样性和代谢概况.
主要方法:
- 使用高脂肪饮食引起的肥胖和正常饮食小鼠暴露在高空和低空.
- 进行了16S rRNA基因测序,用于肠道微生物群分析.
- 使用液体染色体质谱学进行非标便代谢.
- 使用统计软件 (SIMCA,MetaboAnalyst,R) 分析数据.
主要成果:
- 在肥胖小鼠中,低压性缺氧显著降低了体重.
- 与正常体重小鼠相比,肥胖小鼠的肠道微生物群多样性较低.
- 特定的细菌 (Faecalibaculum,Romboutsia,Lactobacillus) 与肥胖有关,而Romboutsia与缺氧有关.
- 便代谢物形状不同,肠道微生物群与相同体重组的核酸和氨基酸代谢有关,同一高度组的脂质和氨基酸代谢.
结论:
- 肥胖与肠道微生物群多样性减少有关.
- 在低氧条件下,罗姆布西亚成为主导的微生物群.
- 肠道微生物群的组成影响宿主新陈代谢,根据体重和海拔高度观察到不同的关联.
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