延迟肠道殖民改变未来的胰岛素抵抗和肝脏基因表达,但不是肥胖小鼠的肥胖
Maria B B Ebert1, Caroline M J Mentzel1, Anders Brunse1
1Department of Veterinary and Animal Sciences Faculty of Health and Medical Sciences University of Copenhagen, Frederiksberg, Denmark.
Journal of obesity
|October 3, 2024
概括
早期的微生物殖民影响了代谢健康. 没有细菌的小鼠的葡萄糖耐受性受损,肝脏基因表达发生变化,这表明对胰岛素耐药性的倾向.
科学领域:
- 微生物学 微生物学
- 代谢健康 代谢健康
- 免疫学 免疫学 免疫学
背景情况:
- 在肥胖和代谢障碍中早期微生物失生症的作用受到辩论.
- 了解因果关系对于代谢健康研究至关重要.
研究的目的:
- 研究早期微生物殖民对小鼠代谢结果的影响.
- 为了确定无细菌期是否会影响生命后期对代谢功能障碍的易感性.
主要方法:
- 没有细菌的小鼠在1周 (1W) 和3周 (3W) 的年龄被殖民,并挑战高脂肪饮食.
- 用16S rRNA基因测序分析了肠道微生物群.
- 通过3W和无特定病原体 (SPF) 控制小鼠的RNA测序来评估肝脏基因表达.
主要成果:
- 与SPF对照组相比,早期无菌殖民导致1W和3W组的葡萄糖耐受性受损.
- 在1W小鼠中观察到抗炎细胞因子IL-10的减少.
- 肝脏基因表达的显著变化被注意到,这表明3W组对胰岛素抵抗的倾向.
结论:
- 早期微生物缺乏并没有影响脂肪,但诱导了胰岛素耐药性和改变了肝脏基因表达.
- 微生物在生命早期向肝脏发送信号可以改变宿主的代谢障碍风险.
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