title: Tryptophan: 'essential' for the pathogenesis of irritable bowel syndrome?
authors.affiliation: Unger-Vetlesen's Institute, Lovisenberg Diakonale Hospital , Oslo , Norway.
authors.forename: Arnold
authors.initials: A
authors.lastname: Berstad
authors.forename: Jan
authors.initials: J
authors.lastname: Raa
authors.forename: Jørgen
authors.initials: J
authors.lastname: Valeur
mesh_terms: D015415:Biomarkers / Q000378:metabolism; D006801:Humans; D050503:Indoleamine-Pyrrole 2,3,-Dioxygenase / Q000378:metabolism; D043183:Irritable Bowel Syndrome / Q000209:etiology* / Q000378:metabolism / Q000382:microbiology / Q000628:therapy; D007737:Kynurenine / Q000378:metabolism; D018384:Oxidative Stress; D014364:Tryptophan / Q000378:metabolism*
chemical_list: D015415:Biomarkers; D050503:Indoleamine-Pyrrole 2,3,-Dioxygenase; D007737:Kynurenine; D014364:Tryptophan
keywords: aryl hydrocarbon receptor; gut microbiota; irritable bowel syndrome; kynurenine; serotonin; tryptophan