Oligofructose eased colitis in mice via gut bacteria
What it found
In mice with colitis, fructo-oligosaccharide reduced symptoms and changed gut bacteria and their breakdown of tryptophan.
The work was done in animals, not people.
What they found
Animal and lab studies
Colitis symptoms eased
Mice given fructo-oligosaccharide had less severe colitis symptoms than untreated mice.
Gut bacteria rebalanced
The prebiotic improved the disrupted mix of gut bacteria in the colitis mice.
Tryptophan breakdown changed
It shifted the way gut bacteria processed tryptophan, a building block of protein.
Two gut compounds rose
Levels of indole-3-acetic acid and indole-3-propionic acid in the colon rose significantly.
Receptor and gut lining
The rise in those compounds was followed by more aromatic hydrocarbon receptors in the colon, and then more interleukin-22 and tight junction proteins.
What the authors conclude
“These findings for the first time highlight a novel anticolitis mechanism of FOS by alleviating intestinal microbiota dysbiosis and modulating microbial tryptophan metabolism to promote IAA and IPA production for triggering AhR/IL-22 axis activation.”
Also in their conclusions
- They report a new way that fructo-oligosaccharide may ease colitis, by fixing the gut bacteria and changing how they break down tryptophan to make indole-3-acetic acid and indole-3-propionic acid.
- They say this triggers the AhR/IL-22 pathway.
How it was done
Fructo-oligosaccharide is a common prebiotic with known gut health effects, and the authors wanted to find out whether it could ease colitis and how it might do so.
Mice with colitis caused by dextran sulfate sodium were given fructo-oligosaccharide by mouth at 400 mg/kg for 37 days.
What it can’t tell you
- We summarised it from the abstract only.
- These are mouse studies. They can't show what happens in people with colitis.
- The mice were given a specific dose for 37 days, so other doses or longer use are not covered.
Who paid
- Authors work at
- Shaanxi Normal University, China
The paper
- Title
- Fructo-oligosaccharides Alleviated Ulcerative Colitis via Gut Microbiota-Dependent Tryptophan Metabolism in Association with Aromatic Hydrocarbon Receptor Activation in Mice
- Type
- Study
- Evidence
- Animals and lab studies
- Summarised from
- Abstract only
- Cite
- Yang C, Du Y, Li Q, et al (2024). Fructo-oligosaccharides Alleviated Ulcerative Colitis via Gut Microbiota-Dependent Tryptophan Metabolism in Association with Aromatic Hydrocarbon Receptor Activation in Mice. Journal of agricultural and food chemistry. doi:10.1021/acs.jafc.4c07248PubMed 39641614DOI
Summary written 26 Sep 2026. Check it against the paper before it changes what you eat. How we summarise papers · Report an error