Dietary fat alters goblet cell function and microbial bile acid metabolism to promote intestinal lipid absorption in mice
Excess dietary lipids impair goblet cell glutamine metabolism, thin the colonic mucus layer, reshape microbiota composition and, via FXR-bile acid signalling, enhance intestinal fat absorption in mouse models.
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What the study showed
The colonic mucus niche was identified as an early, diet-sensitive mediator of metabolic dysfunction. High fat intake depleted Akkermansia muciniphila and expanded Clostridium scindens, altering bile acid profiles and activating FXR-PLIN2 and PPARα pathways in the small intestine. Glutamine supplementation partially reversed these effects by restoring goblet cell function and the microbiota-derived bile acid pool.
How it was done
Mouse experimental study comparing diet-induced and genetic obesity models using multi-omics focused on the colonic mucus niche, with a glutamine supplementation intervention arm.
Risk of bias
All data derive from mouse models; translation to humans is speculative. Access limited to the abstract prevents assessment of sample sizes, controls, and full methodological detail.
What this study does NOT prove
The study does not demonstrate that glutamine supplementation reduces obesity or metabolic dysfunction in humans.
In clinical practice
No clinical evidence is generated by this study. Glutamine supplementation or microbial manipulation in humans lacks direct support from these findings.
Limitations
All data derive from mouse models; translation to humans is speculative. Access limited to the abstract prevents assessment of sample sizes, controls, and full methodological detail.
Technical appendix
Version history
- 1.0 · 2026-08-20 — Auto-generated under Evidence Standard v1.0
Paid access: structured summary from public metadata; consult the original study at the source.