Mutagenesis
Cure8 research brief
Why This Matters
Altered tryptophan metabolism and AhR signaling were linked to fecal-water-induced DNA damage in IBD samples, suggesting a possible pathway connecting inflammation and epithelial genotoxic stress — a mechanism relevant to long-term cancer risk and mucosal health in IBD.
Who Should Pay Attention
Researchers in IBD pathogenesis, translational scientists, clinicians monitoring long-term epithelial health in IBD patients.
Study Snapshot
Story typeResearch paper
Evidence typeResearch paper
Source depthJournal abstract
What To Know
This study analyzed fecal water from people with IBD and controls to see which metabolites are linked to epithelial DNA damage and activation of the aryl hydrocarbon receptor (AhR).
Samples from 80 IBD patients and 20 healthy controls were tested in cell-based assays (comet assay for DNA damage; EROD assay for AhR activity) and by LC–MS to measure metabolites.
The authors report that altered tryptophan metabolism in IBD—specifically higher kynurenine associated with more DNA damage but lower AhR activity, and serotonin associated with higher AhR activity and less DNA damage—may link inflammation, AhR signaling, and epithelial genotoxic stress.
These findings come from ex vivo fecal water experiments and cell assays, not from direct measurements of tissue damage in patients; they identify associations and pathways for further study rather than clinical effects or treatment recommendations.
Keep In Mind
Findings are based on fecal water exposures to cell lines and metabolomic association analyses; they show associations and biological plausibility but not proven causation or patient-level outcomes.
Source Details
Review the original publication for the complete reporting, methods, and context.
Research paper
Evidence type derived from source or registry metadata.
PublicationMutagenesis
AuthorsLuping Chen, Shan Wang, Corinne Spooren +5 more
InstitutionDepartment of Pharmacology and Toxicology.
Study typeJournal article
Indexed viaPubMed
Source typeResearch paper
PublishedSep 1, 2026, 12:00 AM
Content availableJournal abstract
This Cure8 brief is based on source text from the linked article. Cure8 is informational only and is not a substitute for professional medical advice, diagnosis, or treatment.
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