葡萄甘促进大肠杆菌 (Bacteroides ovatus) 改善肠道屏障功能并改善胰岛素耐药性
Qixing Nie1, Yonggan Sun1, Wenbing Hu2
1State Key Laboratory of Food Science and Resources, China-Canada Joint Lab of Food Science and Technology, Key Laboratory of Bioactive Polysaccharides of Jiangxi Province Nanchang University Nanchang China.
iMeta
|June 13, 2024
概括
葡萄甘通过改变肠道细菌来改善胰岛素耐药性,特别是促进 Bacteroides ovatus. 这种细菌产生酸 (IAA),激活酸碳水化合物受体 (AhR),以减少炎症和增强肠道屏障功能.
科学领域:
- 微生物学 微生物学
- 代谢疾病 代谢疾病
- 我们的肠道微生物群.
背景情况:
- 生物活性食纤维通过调节肠道微生物群,为代谢疾病提供健康益处.
- 葡萄甘表现出代谢保护作用,但其微生物信号代谢物和宿主点尚未完全理解.
研究的目的:
- 为了阐明微生物机制背后的葡萄甘的代谢益处.
- 为了确定关键的微生物代谢物和宿主点,参与葡萄康南对抗胰岛素耐药性的作用.
主要方法:
- 在高脂肪饮食 (HFD) 诱导的抗胰岛素小鼠中补充葡萄糖甘南.
- 分析肠道微生物群的组成和功能.
- 使用特定细菌 (Bacteroides ovatus) 的殖民实验.
- 测量肠道屏障完整性和全身炎症标志物.
- 酸 (IAA) 和酸碳化合物受体 (AhR) 途径的研究.
主要成果:
- 葡萄甘补充剂减轻了小鼠的HFD诱导的胰岛素耐药性,这取决于肠道微生物群.
- 葡萄甘促进了 Bacteroides ovatus 的生长.
- B. ovatus殖民减少了胰岛素抵抗,改善了肠道屏障的完整性,并减少了全身炎症.
- B. ovatus-derived indoleacetic acid (IAA) 激活了肠道的阿里尔碳化合物受体 (AhR),加强了肠道屏障并改善了胰岛素抵抗.
结论:
- 葡萄甘通过调节肠道微生物群来发挥代谢效益.
- B. ovatus-IAA-肠 AhR轴是一个关键通路,通过该通道,葡萄甘可以缓解胰岛素抵抗.
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