阿克尔曼西亚尼菲拉通过肠道微生物介导的托芬调节来缓解代谢障碍
Fengli Zhang1, Jiajun Tian2, Ji-Tong Li2
1Department of Aquaculture, Zhejiang Ocean University, Zhoushan, 316000, Zhejiang, China. 2022128@zjou.edu.cn.
AMB Express
|November 22, 2025
概括
阿克尔曼西亚尼菲拉 (Akkermansia muciniphila) 补充剂通过增强肠道微生物群和托代谢来对抗高脂肪饮食的影响,改善斑马鱼的代谢健康和肠道完整性.
科学领域:
- 微生物学 微生物学
- 代谢科学 代谢科学
- 胃肠病学 胃肠病学
背景情况:
- 高脂肪饮食 (HFD) 与肥胖和代谢综合征有关.
- 阿克尔曼西亚 (Akkermansia muciniphila) 是一种有前途的益生菌,可以治疗代谢障碍.
- A. muciniphila的机制,特别是托代谢,需要进一步研究.
研究的目的:
- 为了调查A. muciniphila补充剂如何影响斑马鱼中HFD诱导的代谢功能障碍.
- 阐明肠道微生物群和酸盐代谢在A. muciniphila的保护作用中的作用.
- 为了探索基碳化合物受体 (AhR) 信号通路.
主要方法:
- 斑马鱼被养高脂肪饮食,并补充了A. muciniphila.
- 用抗生素治疗来确认微生物群的依赖性.
- 16S rRNA测序和代谢学分析了肠道微生物群和代谢产物.
- 基因表达和途径分析确定了分子机制.
主要成果:
- 在HFD斑马鱼中,A. muciniphila减少了体重增加,肥胖,肝硬化和内毒性.
- 它提高了生存率,增强了抗氧化能力,并修复了肠道屏障.
- 微生物群分析显示了细菌种群的变化和托代谢物 (例如,-3-乳酸) 的增加.
- 这些代谢物激活了AhR,提高了IL-22的调节,改善了肠道完整性.
结论:
- A. muciniphila通过肠道微生物群-氨酸-AhR轴减轻斑马鱼中HFD诱导的代谢综合征.
- 它调节肠道微生物群的组成,增强托代谢.
- 这突出了益生菌媒介代谢健康改善的新机制.
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