在体外肠道模型中,FMT捐赠微生物群的益生菌调节增强了MASLD相关的税率和功能
Kait F Al1,2, Suyang Jia3, Michael Silverman2,4
1Department of Microbiology and Immunology, Schulich School of Medicine and Dentistry, Western University, London, ON, CA.
Journal of applied microbiology
|March 13, 2026
概括
益生菌如胰岛素和氧化氧化糖 (XOS) 可以丰富便微生物移植 (FMT) 捐赠者的有益肠道微生物. 这支持它们用于改善对代谢功能障碍相关脂肪性肝病 (MASLD) 的FMT疗效.
科学领域:
- 微生物学 微生物学
- 胃肠病学 胃肠病学
- 代谢健康 代谢健康
背景情况:
- 与代谢功能障碍相关的脂肪性肝病 (MASLD) 与肠道微生物群失调有着密切的联系.
- 便微生物群移植 (FMT) 对MASLD具有前景,但面临着对有益微生物的一致植入的挑战.
- 益生菌可以选择性地促进与减少MASLD风险相关的微生物的生长.
研究的目的:
- 评估胰岛素和氧化氧化糖 (XOS) 在调节健康FMT捐赠者的肠道微生物群的疗效.
- 使用体外肠道模型评估对MASLD耐药微生物种群和功能的丰富性.
- 确定益生菌对短链脂肪酸 (SCFA) 生产的影响.
主要方法:
- 从八名健康的FMT捐赠者身上培养出24小时的无氧便,使用或不使用胰岛素或XOS.
- 通过16S rRNA基因测序分析微生物组成.
- 使用核磁共振对SCFA进行量化,并通过预测性元基因组学推断功能潜力.
主要成果:
- 胰岛素和XOS都持续丰富了Bifidobacterium和Bacteroides,这两种与SCFA生产和代谢健康有关.
- 优选XOS增强了Lactobacillus和Parabacteroides,而胰岛素增强了Holdemanella和地中海细菌.
- 观察到与MASLD相关的功能通路的丰富,包括碳水化合物和脂肪酸代谢,以及酸盐水平的增加.
结论:
- 益生菌补充选择性地丰富了MASLD相关的微生物种群和功能在捐赠者FMT材料中.
- 胰岛素和XOS显示出作为辅助剂的潜力,以提高MASLD的FMT疗效和疾病特异性.
- 有针对性的益生菌使用可能会改善MASLD的FMT干预措施的治疗结果.
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