Page last updated: 2024-10-18

kynurenine and Colitis, Mucous

kynurenine has been researched along with Colitis, Mucous in 10 studies

Kynurenine: A metabolite of the essential amino acid tryptophan metabolized via the tryptophan-kynurenine pathway.
kynurenine : A ketone that is alanine in which one of the methyl hydrogens is substituted by a 2-aminobenzoyl group.

Research Excerpts

ExcerptRelevanceReference
" The purpose of this study was to evaluate the efficacy of a low-FODMAP diet with a concomitant reduction in tryptophan (TRP) intake in irritable bowel syndrome with diarrhea predominance (IBS-D) in relation to its metabolism via the serotonin and kynurenine pathways."9.69The Usefulness of the Low-FODMAP Diet with Limited Tryptophan Intake in the Treatment of Diarrhea-Predominant Irritable Bowel Syndrome. ( Blasiak, J; Blonska, A; Chojnacki, C; Chojnacki, J; Konrad, P; Poplawski, T, 2023)
"Utilising the acute tryptophan depletion (ATD) protocol, the aim of this study was to examine if manipulating peripheral levels of tryptophan regulates cognitive performance in irritable bowel syndrome and also to determine for the first time if the ATD protocol alters kynurenine supply to the central nervous system."9.20Acute tryptophan depletion reduces kynurenine levels: implications for treatment of impaired visuospatial memory performance in irritable bowel syndrome. ( Allen, AP; Clarke, G; Cryan, JF; Dinan, TG; Kennedy, PJ; O'Neill, A; Quigley, EM, 2015)
"Irregularities of serotonin function in irritable bowel syndrome (IBS) may be due to changes in the metabolism of the serotonin precursor l-tryptophan."9.14Increased serum free tryptophan in patients with diarrhea-predominant irritable bowel syndrome. ( Afzal, M; Badawy, AA; Christmas, DM; Creed, T; Davies, SJ; Hince, D; Nutt, DJ; Potokar, JP; Probert, C; Smithson, J, 2010)
"Our objectives are to demonstrate whether the kynurenine pathway is activated in diarrhea-type irritable bowel syndrome (IBS-D) patients, and whether the neurotoxic metabolite quinolinic acid (QUIN) is out of balance with the neuroprotective metabolite kynurenic acid (KYNA), and further explore whether this can lead to increase of N-methyl D-aspartate receptor 2B (NMDAR2B) expression in the enteric nervous system and in turn leads to intestinal symptoms and mood disorders."7.96Characterization of kynurenine pathway in patients with diarrhea-predominant irritable bowel syndrome. ( Bai, Y; Cui, Z; Li, P; Li, Y; Wang, D; Wang, Y; Zhang, J; Zheng, J, 2020)
" The purpose of this study was to evaluate the efficacy of a low-FODMAP diet with a concomitant reduction in tryptophan (TRP) intake in irritable bowel syndrome with diarrhea predominance (IBS-D) in relation to its metabolism via the serotonin and kynurenine pathways."5.69The Usefulness of the Low-FODMAP Diet with Limited Tryptophan Intake in the Treatment of Diarrhea-Predominant Irritable Bowel Syndrome. ( Blasiak, J; Blonska, A; Chojnacki, C; Chojnacki, J; Konrad, P; Poplawski, T, 2023)
"Utilising the acute tryptophan depletion (ATD) protocol, the aim of this study was to examine if manipulating peripheral levels of tryptophan regulates cognitive performance in irritable bowel syndrome and also to determine for the first time if the ATD protocol alters kynurenine supply to the central nervous system."5.20Acute tryptophan depletion reduces kynurenine levels: implications for treatment of impaired visuospatial memory performance in irritable bowel syndrome. ( Allen, AP; Clarke, G; Cryan, JF; Dinan, TG; Kennedy, PJ; O'Neill, A; Quigley, EM, 2015)
"Irregularities of serotonin function in irritable bowel syndrome (IBS) may be due to changes in the metabolism of the serotonin precursor l-tryptophan."5.14Increased serum free tryptophan in patients with diarrhea-predominant irritable bowel syndrome. ( Afzal, M; Badawy, AA; Christmas, DM; Creed, T; Davies, SJ; Hince, D; Nutt, DJ; Potokar, JP; Probert, C; Smithson, J, 2010)
"Our objectives are to demonstrate whether the kynurenine pathway is activated in diarrhea-type irritable bowel syndrome (IBS-D) patients, and whether the neurotoxic metabolite quinolinic acid (QUIN) is out of balance with the neuroprotective metabolite kynurenic acid (KYNA), and further explore whether this can lead to increase of N-methyl D-aspartate receptor 2B (NMDAR2B) expression in the enteric nervous system and in turn leads to intestinal symptoms and mood disorders."3.96Characterization of kynurenine pathway in patients with diarrhea-predominant irritable bowel syndrome. ( Bai, Y; Cui, Z; Li, P; Li, Y; Wang, D; Wang, Y; Zhang, J; Zheng, J, 2020)
"Changes in KP were reported in both migraine and FGIDs."2.72Kynurenine Pathway of Tryptophan Metabolism in Migraine and Functional Gastrointestinal Disorders. ( Blasiak, J; Chojnacki, C; Chojnacki, J; Fila, M; Pawlowska, E; Szczepanska, J, 2021)
"Kynurenines have been implicated in the neuroendocrine regulatory processes."2.52[Stress and the kynurenine pathway]. ( Majláth, Z; Vécsei, L, 2015)

Research

Studies (10)

TimeframeStudies, this research(%)All Research%
pre-19900 (0.00)18.7374
1990's0 (0.00)18.2507
2000's2 (20.00)29.6817
2010's4 (40.00)24.3611
2020's4 (40.00)2.80

Authors

AuthorsStudies
Fila, M1
Chojnacki, J2
Pawlowska, E1
Szczepanska, J1
Chojnacki, C3
Blasiak, J2
Błońska, A1
Konrad, P2
Chojnacki, M1
Podogrocki, M1
Poplawski, T2
Blonska, A1
Li, P1
Zheng, J1
Bai, Y1
Wang, D1
Cui, Z1
Li, Y1
Zhang, J1
Wang, Y1
Berstad, A1
Raa, J1
Valeur, J1
Kennedy, PJ1
Allen, AP1
O'Neill, A1
Quigley, EM2
Cryan, JF2
Dinan, TG2
Clarke, G3
Majláth, Z1
Vécsei, L1
Fitzgerald, P2
Cassidy Eugene, M1
Scully, P1
Barry, S1
Quigley Eamonn, MM1
Shanahan, F1
Cryan, J1
Dinan Timothy, G1
Cassidy, EM1
Christmas, DM1
Badawy, AA1
Hince, D1
Davies, SJ1
Probert, C1
Creed, T1
Smithson, J1
Afzal, M1
Nutt, DJ1
Potokar, JP1

Clinical Trials (3)

Trial Overview

TrialPhaseEnrollmentStudy TypeStart DateStatus
Kynurenine Pathway Metabolites as Novel Translational Biological Markers of Irritable Bowel Syndrome: Relationship to Gastrointestinal Function, Cognition and Co-morbid Depression[NCT01304355]85 participants (Anticipated)Observational2011-01-31Recruiting
The Safety and Effectiveness of Probiotic Supplementation on Bipolar Depression: a Proof of Concept Randomized Controlled Trial[NCT02155972]Phase 216 participants (Actual)Interventional2013-05-31Terminated (stopped due to The trial was terminated because of inability to recruit the needed number of participants)
Pilot Study Aimed to Determine the Optimal Design for the UCLA/Danone Probiotic Intervention Study Related to Stress[NCT05026333]100 participants (Actual)Interventional2021-06-25Completed
[information is prepared from clinicaltrials.gov, extracted Sep-2024]

Reviews

2 reviews available for kynurenine and Colitis, Mucous

ArticleYear
Kynurenine Pathway of Tryptophan Metabolism in Migraine and Functional Gastrointestinal Disorders.
    International journal of molecular sciences, 2021, Sep-20, Volume: 22, Issue:18

    Topics: Animals; Brain; Humans; Intestinal Mucosa; Irritable Bowel Syndrome; Kynurenine; Migraine Disorders;

2021
[Stress and the kynurenine pathway].
    Orvosi hetilap, 2015, Aug-30, Volume: 156, Issue:35

    Topics: Animals; Humans; Intestines; Irritable Bowel Syndrome; Kynurenine; Mental Disorders; Microcirculatio

2015

Trials

3 trials available for kynurenine and Colitis, Mucous

ArticleYear
The Usefulness of the Low-FODMAP Diet with Limited Tryptophan Intake in the Treatment of Diarrhea-Predominant Irritable Bowel Syndrome.
    Nutrients, 2023, Apr-11, Volume: 15, Issue:8

    Topics: Chromatography, Liquid; Diarrhea; Diet; Fermentation; FODMAP Diet; Humans; Irritable Bowel Syndrome;

2023
Acute tryptophan depletion reduces kynurenine levels: implications for treatment of impaired visuospatial memory performance in irritable bowel syndrome.
    Psychopharmacology, 2015, Volume: 232, Issue:8

    Topics: Adolescent; Adult; Cross-Over Studies; Double-Blind Method; Female; Hippocampus; Humans; Irritable B

2015
Increased serum free tryptophan in patients with diarrhea-predominant irritable bowel syndrome.
    Nutrition research (New York, N.Y.), 2010, Volume: 30, Issue:10

    Topics: Adult; Affect; Amino Acids, Neutral; Case-Control Studies; Dairy Products; Diarrhea; Diet; Female; H

2010

Other Studies

5 other studies available for kynurenine and Colitis, Mucous

ArticleYear
Changes in Tryptophan Metabolism on Serotonin and Kynurenine Pathways in Patients with Irritable Bowel Syndrome.
    Nutrients, 2023, Mar-03, Volume: 15, Issue:5

    Topics: Chromatography, Liquid; Humans; Hydroxyindoleacetic Acid; Irritable Bowel Syndrome; Kynurenic Acid;

2023
Characterization of kynurenine pathway in patients with diarrhea-predominant irritable bowel syndrome.
    European journal of histochemistry : EJH, 2020, Jun-19, Volume: 64, Issue:s2

    Topics: Diarrhea; Female; Humans; Intestinal Mucosa; Irritable Bowel Syndrome; Kynurenic Acid; Kynurenine; M

2020
Tryptophan: 'essential' for the pathogenesis of irritable bowel syndrome?
    Scandinavian journal of gastroenterology, 2014, Volume: 49, Issue:12

    Topics: Biomarkers; Humans; Indoleamine-Pyrrole 2,3,-Dioxygenase; Irritable Bowel Syndrome; Kynurenine; Oxid

2014
Tryptophan catabolism in females with irritable bowel syndrome: relationship to interferon-gamma, severity of symptoms and psychiatric co-morbidity.
    Neurogastroenterology and motility, 2008, Volume: 20, Issue:12

    Topics: Adult; Anxiety Disorders; Chromatography, High Pressure Liquid; Comorbidity; Depressive Disorder, Ma

2008
Tryptophan catabolism in females with irritable bowel syndrome: relationship to interferon-gamma, severity of symptoms and psychiatric co-morbidity.
    Neurogastroenterology and motility, 2008, Volume: 20, Issue:12

    Topics: Adult; Anxiety Disorders; Chromatography, High Pressure Liquid; Comorbidity; Depressive Disorder, Ma

2008
Tryptophan catabolism in females with irritable bowel syndrome: relationship to interferon-gamma, severity of symptoms and psychiatric co-morbidity.
    Neurogastroenterology and motility, 2008, Volume: 20, Issue:12

    Topics: Adult; Anxiety Disorders; Chromatography, High Pressure Liquid; Comorbidity; Depressive Disorder, Ma

2008
Tryptophan catabolism in females with irritable bowel syndrome: relationship to interferon-gamma, severity of symptoms and psychiatric co-morbidity.
    Neurogastroenterology and motility, 2008, Volume: 20, Issue:12

    Topics: Adult; Anxiety Disorders; Chromatography, High Pressure Liquid; Comorbidity; Depressive Disorder, Ma

2008
Tryptophan degradation in irritable bowel syndrome: evidence of indoleamine 2,3-dioxygenase activation in a male cohort.
    BMC gastroenterology, 2009, Jan-20, Volume: 9

    Topics: Adult; Aged; Biomarkers; Case-Control Studies; Cohort Studies; Enzyme Activation; Humans; Indoleamin

2009
Tryptophan degradation in irritable bowel syndrome: evidence of indoleamine 2,3-dioxygenase activation in a male cohort.
    BMC gastroenterology, 2009, Jan-20, Volume: 9

    Topics: Adult; Aged; Biomarkers; Case-Control Studies; Cohort Studies; Enzyme Activation; Humans; Indoleamin

2009
Tryptophan degradation in irritable bowel syndrome: evidence of indoleamine 2,3-dioxygenase activation in a male cohort.
    BMC gastroenterology, 2009, Jan-20, Volume: 9

    Topics: Adult; Aged; Biomarkers; Case-Control Studies; Cohort Studies; Enzyme Activation; Humans; Indoleamin

2009
Tryptophan degradation in irritable bowel syndrome: evidence of indoleamine 2,3-dioxygenase activation in a male cohort.
    BMC gastroenterology, 2009, Jan-20, Volume: 9

    Topics: Adult; Aged; Biomarkers; Case-Control Studies; Cohort Studies; Enzyme Activation; Humans; Indoleamin

2009