Page last updated: 2024-10-18

kynurenine and Bipolar Disorder

kynurenine has been researched along with Bipolar Disorder in 49 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.

Bipolar Disorder: A major affective disorder marked by severe mood swings (manic or major depressive episodes) and a tendency to remission and recurrence.

Research Excerpts

ExcerptRelevanceReference
"The balance between neurotoxic and neuroprotective effects of kynurenine pathway (KP) components has been recently proposed as a key element in the pathophysiology of bipolar disorder (BD) and related mood episodes."9.22The association of kynurenine pathway metabolites with symptom severity and clinical features of bipolar disorder: An overview. ( Bartoli, F; Callovini, T; Carrà, G; Cavaleri, D; Cioni, RM; Crocamo, C; Misiak, B; Savitz, JB, 2022)
"Growing evidence suggests that a dysregulation of the kynurenine pathway (KP) occurs in bipolar disorder (BD)."9.12The kynurenine pathway in bipolar disorder: a meta-analysis on the peripheral blood levels of tryptophan and related metabolites. ( Bartoli, F; Callovini, T; Carrà, G; Cavaleri, D; Cioni, RM; Crocamo, C; Misiak, B; Savitz, JB, 2021)
"Tryptophan catabolites (TRYCATs) are implicated in the pathophysiology of mood disorders by mediating immune-inflammation and neurodegenerative processes."9.12Tryptophan Catabolites in Bipolar Disorder: A Meta-Analysis. ( Coppens, V; De Picker, L; Giltay, EJ; Hebbrecht, K; Morrens, M; Skorobogatov, K, 2021)
"There has been growing scientific evidence in recent years that bipolar disorder (BD) is associated with alterations in the kynurenine (KYN) pathway."8.02Alterations in plasma kynurenine pathway metabolites in children and adolescents with bipolar disorder and unaffected offspring of bipolar parents: A preliminary study. ( Benevenuto, D; Fries, GR; Kahlon, R; Kazimi, IF; Kurian, S; Quevedo, J; Saxena, J; Saxena, K; Scaini, G; Soares, JC; Valvassori, SS; Zeni, CP, 2021)
"Mania and chronic depressive symptoms in BD are accompanied by a strong interaction between inflammation and a potentially neurotoxic kynurenine metabolism."7.96A mood state-specific interaction between kynurenine metabolism and inflammation is present in bipolar disorder. ( Coppens, V; de Boer, P; Fransen, E; Lai, FY; Morrens, M; Sabbe, B; Schuermans, J; Timmers, M; van den Ameele, S; van Diermen, L; van Nuijs, AL; Verkerk, R, 2020)
"Although prone to residual confounding, the present results suggest the kynurenine pathway of tryptophan metabolism, noradrenergic and purinergic system dysfunction as trait factors in schizophrenia spectrum and bipolar disorders."7.96Metabolic dysfunctions in the kynurenine pathway, noradrenergic and purine metabolism in schizophrenia and bipolar disorders. ( Agartz, I; Andreassen, OA; Bogdanov, M; Dieset, I; Djurovic, S; Hope, S; Jönsson, EG; Kaddurah-Daouk, R; Matson, W; Melle, I; Smeland, OB; Steen, NE; Vedal, TSJ, 2020)
"Ketamine has rapid antidepressant effects on treatment-resistant depression, but the biological mechanism underpinning this effect is less clear."7.88Antidepressant effect of repeated ketamine administration on kynurenine pathway metabolites in patients with unipolar and bipolar depression. ( Chen, L; Li, H; Li, M; Liu, W; Ning, Y; Wang, C; Zhan, Y; Zheng, W; Zhou, Y, 2018)
" Activation of indoleamine 2-3 dioxygenase following a pro-inflammatory state could reduce the amount of tryptophan converted to serotonin and increase the production of tryptophan catabolites such as kynurenic acid, an antagonist of ionotropic excitatory aminoacid receptors, whose levels are reduced in bipolar disorder."7.88Kynurenine pathway and white matter microstructure in bipolar disorder. ( Benedetti, F; Bollettini, I; Colombo, C; Grillitsch, D; Locatelli, C; Mazza, E; Myint, AM; Poletti, S; Schüetze, G; Schwarz, M, 2018)
"Inflammation-related changes in the concentrations of kynurenine-pathway metabolites occur in depression secondary to medical conditions but have not been well characterized in primary bipolar disorder (BD), with contradictory results potentially attributable to the presence or absence of psychosis and/or medication effects."7.81Neuroprotective kynurenine metabolite indices are abnormally reduced and positively associated with hippocampal and amygdalar volume in bipolar disorder. ( Bellgowan, PS; Bodurka, J; Dantzer, R; Drevets, WC; Ford, BN; Savitz, J; Teague, TK; Victor, TA; Wurfel, BE, 2015)
"We investigated the tryptophan-kynurenine metabolism pathway as a proxy of dysregulated inflammatory homeostasis in euthymic, overweight individuals with BD (n = 78) compared to healthy controls (n = 156)."7.80Tryptophan breakdown is increased in euthymic overweight individuals with bipolar disorder: a preliminary report. ( Bengesser, SA; Birner, A; Fuchs, D; Geisler, S; Hecht, K; Kapfhammer, HP; Kattnig, F; Lackner, N; Mangge, H; McIntyre, RS; Reininghaus, B; Reininghaus, EZ; Unterweger, R; Zelzer, S, 2014)
"Prior studies of mRNA expression, protein expression, and pathway metabolite levels have implicated dysregulation of the kynurenine pathway in the etiology of schizophrenia and bipolar disorder."7.75Two complex genotypes relevant to the kynurenine pathway and melanotropin function show association with schizophrenia and bipolar disorder. ( Leonard, S; Miller, CL; Murakami, P; Ross, RG; Ruczinski, I; Sinkus, M; Sullivan, B, 2009)
"Increased concentrations of kynurenine pathway metabolites have been reported by several groups for disorders involving psychosis, including schizophrenia and bipolar disorder."7.74Alterations in kynurenine precursor and product levels in schizophrenia and bipolar disorder. ( Cwik, M; Llenos, IC; Miller, CL; Walkup, J; Weis, S, 2008)
"Ketamine is a novel rapid-acting antidepressant with high efficacy in treatment-resistant patients."6.72Ketamine's effect on inflammation and kynurenine pathway in depression: A systematic review. ( Kopra, E; Mondelli, V; Nikkheslat, N; Pariante, C, 2021)
"Chronic low-grade inflammation is suggested to play a pathophysiological role in bipolar disorder (BD) and its related cognitive dysfunctions."5.72The Role of Kynurenines in Cognitive Dysfunction in Bipolar Disorder. ( Giltay, EJ; Hebbrecht, K; Morrens, M; Sabbe, B; van den Ameele, S; van Nuijs, ALN, 2022)
"Chronic, low-level inflammation is associated with symptomatic bipolar disorder (BD) and with chronic insomnia."5.48Total sleep time and kynurenine metabolism associated with mood symptom severity in bipolar disorder. ( Can, A; Fuchs, D; Groer, M; Krishnamurthy, VB; Millett, CE; Mukherjee, D; Postolache, TT; Reider, A; Saunders, EFH, 2018)
"Kynurenine is an intermediate in the inflammatory cascade and can be peripherally measured to proxy inflammatory activity."5.46Tryptophan breakdown and cognition in bipolar disorder. ( Bengesser, SA; Birner, A; Dalkner, N; Fellendorf, FT; Fuchs, D; Hamm, C; Herzog-Eberhard, S; Hörmanseder, C; Kainzbauer, N; Maget, A; Mangge, H; Mansur, RB; McIntyre, RS; Moll, N; Pilz, R; Platzer, M; Queissner, R; Rauch, P; Reininghaus, EZ; Schütze, G; Schwarz, MJ; Zelzer, S, 2017)
"The balance between neurotoxic and neuroprotective effects of kynurenine pathway (KP) components has been recently proposed as a key element in the pathophysiology of bipolar disorder (BD) and related mood episodes."5.22The association of kynurenine pathway metabolites with symptom severity and clinical features of bipolar disorder: An overview. ( Bartoli, F; Callovini, T; Carrà, G; Cavaleri, D; Cioni, RM; Crocamo, C; Misiak, B; Savitz, JB, 2022)
"Growing evidence suggests that a dysregulation of the kynurenine pathway (KP) occurs in bipolar disorder (BD)."5.12The kynurenine pathway in bipolar disorder: a meta-analysis on the peripheral blood levels of tryptophan and related metabolites. ( Bartoli, F; Callovini, T; Carrà, G; Cavaleri, D; Cioni, RM; Crocamo, C; Misiak, B; Savitz, JB, 2021)
"Tryptophan catabolites (TRYCATs) are implicated in the pathophysiology of mood disorders by mediating immune-inflammation and neurodegenerative processes."5.12Tryptophan Catabolites in Bipolar Disorder: A Meta-Analysis. ( Coppens, V; De Picker, L; Giltay, EJ; Hebbrecht, K; Morrens, M; Skorobogatov, K, 2021)
"There has been growing scientific evidence in recent years that bipolar disorder (BD) is associated with alterations in the kynurenine (KYN) pathway."4.02Alterations in plasma kynurenine pathway metabolites in children and adolescents with bipolar disorder and unaffected offspring of bipolar parents: A preliminary study. ( Benevenuto, D; Fries, GR; Kahlon, R; Kazimi, IF; Kurian, S; Quevedo, J; Saxena, J; Saxena, K; Scaini, G; Soares, JC; Valvassori, SS; Zeni, CP, 2021)
"Mania and chronic depressive symptoms in BD are accompanied by a strong interaction between inflammation and a potentially neurotoxic kynurenine metabolism."3.96A mood state-specific interaction between kynurenine metabolism and inflammation is present in bipolar disorder. ( Coppens, V; de Boer, P; Fransen, E; Lai, FY; Morrens, M; Sabbe, B; Schuermans, J; Timmers, M; van den Ameele, S; van Diermen, L; van Nuijs, AL; Verkerk, R, 2020)
"Although prone to residual confounding, the present results suggest the kynurenine pathway of tryptophan metabolism, noradrenergic and purinergic system dysfunction as trait factors in schizophrenia spectrum and bipolar disorders."3.96Metabolic dysfunctions in the kynurenine pathway, noradrenergic and purine metabolism in schizophrenia and bipolar disorders. ( Agartz, I; Andreassen, OA; Bogdanov, M; Dieset, I; Djurovic, S; Hope, S; Jönsson, EG; Kaddurah-Daouk, R; Matson, W; Melle, I; Smeland, OB; Steen, NE; Vedal, TSJ, 2020)
" The aim of the present study was to analyze gut microbiota composition in bipolar disorder (BD) and its relation to inflammation, serum lipids, oxidative stress, tryptophan (TRP)/kynurenine (KYN) levels, anthropometric measurements and parameters of metabolic syndrome."3.91A step ahead: Exploring the gut microbiota in inpatients with bipolar disorder during a depressive episode. ( Bengesser, S; Birner, A; Dalkner, N; Fellendorf, F; Gorkiewicz, G; Halwachs, B; Holl, AK; Holzer, P; Kapfhammer, HP; Kashofer, K; Moll, N; Mörkl, S; Painold, A; Platzer, M; Queissner, R; Reininghaus, EZ; Schütze, G; Schwarz, MJ, 2019)
"Ketamine has rapid antidepressant effects on treatment-resistant depression, but the biological mechanism underpinning this effect is less clear."3.88Antidepressant effect of repeated ketamine administration on kynurenine pathway metabolites in patients with unipolar and bipolar depression. ( Chen, L; Li, H; Li, M; Liu, W; Ning, Y; Wang, C; Zhan, Y; Zheng, W; Zhou, Y, 2018)
" Activation of indoleamine 2-3 dioxygenase following a pro-inflammatory state could reduce the amount of tryptophan converted to serotonin and increase the production of tryptophan catabolites such as kynurenic acid, an antagonist of ionotropic excitatory aminoacid receptors, whose levels are reduced in bipolar disorder."3.88Kynurenine pathway and white matter microstructure in bipolar disorder. ( Benedetti, F; Bollettini, I; Colombo, C; Grillitsch, D; Locatelli, C; Mazza, E; Myint, AM; Poletti, S; Schüetze, G; Schwarz, M, 2018)
" Depression is hypothesized to be causally associated with an imbalance in the kynurenine pathway, with an increased metabolism down the 3-hydroxykynurenine (3HK) branch of the pathway leading to increased levels of the neurotoxic metabolite, quinolinic acid (QA), which is a putative N-methyl-d-aspartate (NMDA) receptor agonist."3.85Serum kynurenic acid is reduced in affective psychosis. ( Bliss, SA; Dantzer, R; Drevets, WC; Ford, BN; McMillin, JR; Morris, HM; Savitz, JB; Suzuki, H; Teague, TK; Wurfel, BE, 2017)
"Inflammation-related changes in the concentrations of kynurenine-pathway metabolites occur in depression secondary to medical conditions but have not been well characterized in primary bipolar disorder (BD), with contradictory results potentially attributable to the presence or absence of psychosis and/or medication effects."3.81Neuroprotective kynurenine metabolite indices are abnormally reduced and positively associated with hippocampal and amygdalar volume in bipolar disorder. ( Bellgowan, PS; Bodurka, J; Dantzer, R; Drevets, WC; Ford, BN; Savitz, J; Teague, TK; Victor, TA; Wurfel, BE, 2015)
"We investigated the tryptophan-kynurenine metabolism pathway as a proxy of dysregulated inflammatory homeostasis in euthymic, overweight individuals with BD (n = 78) compared to healthy controls (n = 156)."3.80Tryptophan breakdown is increased in euthymic overweight individuals with bipolar disorder: a preliminary report. ( Bengesser, SA; Birner, A; Fuchs, D; Geisler, S; Hecht, K; Kapfhammer, HP; Kattnig, F; Lackner, N; Mangge, H; McIntyre, RS; Reininghaus, B; Reininghaus, EZ; Unterweger, R; Zelzer, S, 2014)
"Prior studies of mRNA expression, protein expression, and pathway metabolite levels have implicated dysregulation of the kynurenine pathway in the etiology of schizophrenia and bipolar disorder."3.75Two complex genotypes relevant to the kynurenine pathway and melanotropin function show association with schizophrenia and bipolar disorder. ( Leonard, S; Miller, CL; Murakami, P; Ross, RG; Ruczinski, I; Sinkus, M; Sullivan, B, 2009)
"The upregulation of the initiating step of the kynurenine pathway was demonstrated in postmortem anterior cingulated cortex from individuals with schizophrenia and bipolar disorder."3.74Tryptophan breakdown pathway in bipolar mania. ( Kim, YK; Leonard, BE; Myint, AM; Park, SH; Scharpé, S; Steinbusch, HW; Verkerk, R, 2007)
"Increased concentrations of kynurenine pathway metabolites have been reported by several groups for disorders involving psychosis, including schizophrenia and bipolar disorder."3.74Alterations in kynurenine precursor and product levels in schizophrenia and bipolar disorder. ( Cwik, M; Llenos, IC; Miller, CL; Walkup, J; Weis, S, 2008)
"Ketamine is a novel rapid-acting antidepressant with high efficacy in treatment-resistant patients."2.72Ketamine's effect on inflammation and kynurenine pathway in depression: A systematic review. ( Kopra, E; Mondelli, V; Nikkheslat, N; Pariante, C, 2021)
"Chronic low-grade inflammation is suggested to play a pathophysiological role in bipolar disorder (BD) and its related cognitive dysfunctions."1.72The Role of Kynurenines in Cognitive Dysfunction in Bipolar Disorder. ( Giltay, EJ; Hebbrecht, K; Morrens, M; Sabbe, B; van den Ameele, S; van Nuijs, ALN, 2022)
"Chronic, low-level inflammation is associated with symptomatic bipolar disorder (BD) and with chronic insomnia."1.48Total sleep time and kynurenine metabolism associated with mood symptom severity in bipolar disorder. ( Can, A; Fuchs, D; Groer, M; Krishnamurthy, VB; Millett, CE; Mukherjee, D; Postolache, TT; Reider, A; Saunders, EFH, 2018)
"Kynurenine is an intermediate in the inflammatory cascade and can be peripherally measured to proxy inflammatory activity."1.46Tryptophan breakdown and cognition in bipolar disorder. ( Bengesser, SA; Birner, A; Dalkner, N; Fellendorf, FT; Fuchs, D; Hamm, C; Herzog-Eberhard, S; Hörmanseder, C; Kainzbauer, N; Maget, A; Mangge, H; Mansur, RB; McIntyre, RS; Moll, N; Pilz, R; Platzer, M; Queissner, R; Rauch, P; Reininghaus, EZ; Schütze, G; Schwarz, MJ; Zelzer, S, 2017)

Research

Studies (49)

TimeframeStudies, this research(%)All Research%
pre-199010 (20.41)18.7374
1990's1 (2.04)18.2507
2000's4 (8.16)29.6817
2010's18 (36.73)24.3611
2020's16 (32.65)2.80

Authors

AuthorsStudies
Comai, S2
Melloni, E2
Lorenzi, C1
Bollettini, I2
Vai, B1
Zanardi, R1
Colombo, C3
Valtorta, F2
Benedetti, F3
Poletti, S3
Hebbrecht, K2
Morrens, M3
Giltay, EJ2
van Nuijs, ALN1
Sabbe, B2
van den Ameele, S2
Bartoli, F3
Cioni, RM3
Cavaleri, D3
Callovini, T3
Crocamo, C3
Misiak, B2
Savitz, JB3
Carrà, G3
Sales, PMG3
Schrage, E3
Coico, R3
Pato, M3
van Nuijs, AL1
Lai, FY1
Schuermans, J1
Verkerk, R2
van Diermen, L1
Coppens, V2
Fransen, E1
de Boer, P1
Timmers, M1
Aggio, V1
Kadriu, B1
Farmer, CA1
Yuan, P1
Park, LT1
Deng, ZD1
Moaddel, R1
Henter, ID1
Shovestul, B1
Ballard, ED1
Kraus, C1
Gold, PW1
Machado-Vieira, R1
Zarate, CA1
Murata, S1
Murphy, M1
Hoppensteadt, D1
Fareed, J1
Welborn, A1
Halaris, A1
Benevenuto, D1
Saxena, K1
Fries, GR1
Valvassori, SS1
Kahlon, R1
Saxena, J1
Kurian, S1
Zeni, CP1
Kazimi, IF1
Scaini, G1
Soares, JC2
Quevedo, J2
Marx, W1
McGuinness, AJ1
Rocks, T1
Ruusunen, A1
Cleminson, J1
Walker, AJ1
Gomes-da-Costa, S1
Lane, M1
Sanches, M1
Diaz, AP1
Tseng, PT1
Lin, PY1
Berk, M1
Clarke, G1
O'Neil, A1
Jacka, F1
Stubbs, B1
Carvalho, AF1
Fernandes, BS1
Trepci, A1
Sellgren, CM1
Pålsson, E1
Brundin, L1
Khanlarkhani, N1
Schwieler, L2
Landén, M1
Erhardt, S2
Skorobogatov, K1
De Picker, L1
Kopra, E1
Mondelli, V1
Pariante, C1
Nikkheslat, N1
Wurfel, BE2
Drevets, WC2
Bliss, SA1
McMillin, JR1
Suzuki, H1
Ford, BN2
Morris, HM1
Teague, TK2
Dantzer, R2
Platzer, M5
Dalkner, N5
Fellendorf, FT4
Birner, A6
Bengesser, SA5
Queissner, R5
Kainzbauer, N1
Pilz, R3
Herzog-Eberhard, S2
Hamm, C3
Hörmanseder, C1
Maget, A3
Rauch, P2
Mangge, H4
Fuchs, D5
Zelzer, S3
Schütze, G4
Moll, N4
Schwarz, MJ2
Mansur, RB1
McIntyre, RS2
Reininghaus, EZ6
Painold, A2
Reininghaus, B4
Kapfhammer, HP5
Holasek, SJ1
Mukherjee, D1
Krishnamurthy, VB1
Millett, CE1
Reider, A1
Can, A1
Groer, M1
Postolache, TT1
Saunders, EFH1
Mörkl, S1
Kashofer, K1
Halwachs, B1
Bengesser, S1
Fellendorf, F1
Holzer, P1
Holl, AK1
Gorkiewicz, G1
Li, C1
Wang, A1
Wang, C2
Ramamurthy, J1
Zhang, E1
Guadagno, E1
Trakadis, Y1
Pompili, M1
Lionetto, L1
Curto, M1
Forte, A1
Erbuto, D1
Montebovi, F1
Seretti, ME1
Berardelli, I1
Serafini, G1
Innamorati, M1
Amore, M1
Baldessarini, RJ1
Girardi, P1
Simmaco, M1
Takada, A1
Shimizu, F1
Takao, T1
Zhou, Y1
Zheng, W1
Liu, W1
Zhan, Y1
Li, H1
Chen, L1
Li, M1
Ning, Y1
Steen, NE1
Dieset, I1
Hope, S1
Vedal, TSJ1
Smeland, OB1
Matson, W1
Kaddurah-Daouk, R1
Agartz, I1
Melle, I1
Djurovic, S1
Jönsson, EG1
Bogdanov, M1
Andreassen, OA1
Hecker, A1
Tomberger, L1
Schwarz, M3
Johansson, AS1
Owe-Larsson, B1
Asp, L1
Kocki, T1
Adler, M1
Hetta, J1
Gardner, R1
Lundkvist, GB1
Urbanska, EM1
Karlsson, H1
Geisler, S1
Lackner, N1
Hecht, K1
Kattnig, F1
Unterweger, R1
Savitz, J1
Victor, TA1
Bodurka, J1
Bellgowan, PS1
Anderson, G1
Jacob, A1
Bellivier, F1
Geoffroy, PA1
Imbeault, S1
Engberg, G1
Myint, AM3
Schüetze, G1
Mazza, E1
Grillitsch, D1
Locatelli, C1
Miller, CL3
Murakami, P1
Ruczinski, I1
Ross, RG1
Sinkus, M1
Sullivan, B1
Leonard, S1
Llenos, IC2
Dulay, JR1
Weis, S2
Kim, YK1
Park, SH1
Scharpé, S1
Steinbusch, HW1
Leonard, BE1
Cwik, M1
Walkup, J1
Rubin, RT3
Anokhina, IP1
Gamaleia, NB1
Orlikov, AB1
Prakhye, IB1
Ryzov, IV1
Chouinard, G2
Young, SN2
Annable, L2
Sourkes, TL1
Møller, SE2
Amdisen, A1
Kirk, L2
Moller, SE1
Fremming, KH1
Frazer, A1
Pandey, GN1
Mendels, J1
Overall, JE1

Clinical Trials (5)

Trial Overview

TrialPhaseEnrollmentStudy TypeStart DateStatus
Investigation of the Rapid (Next Day) Antidepressant Effects of an NMDA Antagonist[NCT00088699]Phase 1/Phase 267 participants (Actual)Interventional2004-07-26Completed
Cyclooxygenase-2-Inhibitor Combination Treatment for Bipolar Depression: Role of Inflammation and Kynurenine Pathway Biomarkers[NCT01479829]Phase 488 participants (Actual)Interventional2011-03-31Completed
Study for the Investigation of New Individual Risk Profiles and Therapeutic Strategies in Obesity Related Cardiovascular and Metabolic Disorders.[NCT00482924]1,500 participants (Anticipated)Observational2003-01-31Recruiting
A Randomised Double Blind Placebo Controlled 12 Week Trial of Methotrexate Added to Treatment As Usual in Early Schizophrenia[NCT02074319]Phase 192 participants (Actual)Interventional2013-12-31Completed
Vortioxetine Monotherapy for Major Depressive Disorder in Type 2 Diabetes: Role of Inflammation, Kynurenine Pathway, and Structural and Functional Brain Connectivity as Biomarkers[NCT03580967]Phase 40 participants (Actual)Interventional2019-07-01Withdrawn (stopped due to COVID-19 Pandemic interfered with Pt recruitment)
[information is prepared from clinicaltrials.gov, extracted Sep-2024]

Trial Outcomes

MADRS Score - Baseline

Antidepressant effects were assessed using the Montgomery-Åsberg Depression Rating Scale (MADRS). It is a ten-item diagnostic questionnaire which psychiatrists use to measure the severity of depressive episodes. Higher MADRS score indicates more severe depression, and each item yields a score of 0 to 6. The overall score ranges from 0 to 60. (NCT00088699)
Timeframe: Baseline

Interventionunits on a scale (Mean)
Ketamine - Healthy Volunteers1.17
Placebo - Healthy Volunteers1.48
Ketamine - MDD Patients33.83
Placebo - MDD Patients31.82

MADRS Score - Day 1 Following Intervention

Antidepressant effects were assessed using the Montgomery-Åsberg Depression Rating Scale (MADRS). It is a ten-item diagnostic questionnaire which psychiatrists use to measure the severity of depressive episodes. Higher MADRS score indicates more severe depression, and each item yields a score of 0 to 6. The overall score ranges from 0 to 60. (NCT00088699)
Timeframe: Day 1

Interventionunits on a scale (Mean)
Ketamine - Healthy Volunteers2.45
Placebo - Healthy Volunteers0.67
Ketamine - MDD Patients23.73
Placebo - MDD Patients30.68

Reviews

10 reviews available for kynurenine and Bipolar Disorder

ArticleYear
The association of kynurenine pathway metabolites with symptom severity and clinical features of bipolar disorder: An overview.
    European psychiatry : the journal of the Association of European Psychiatrists, 2022, 11-11, Volume: 65, Issue:1

    Topics: Affect; Bipolar Disorder; Humans; Kynurenine; Signal Transduction; Tryptophan

2022
Linking nervous and immune systems in psychiatric illness: A meta-analysis of the kynurenine pathway.
    Brain research, 2023, 02-01, Volume: 1800

    Topics: Bipolar Disorder; Depressive Disorder, Major; Humans; Immune System; Kynurenic Acid; Kynurenine; Try

2023
Linking nervous and immune systems in psychiatric illness: A meta-analysis of the kynurenine pathway.
    Brain research, 2023, 02-01, Volume: 1800

    Topics: Bipolar Disorder; Depressive Disorder, Major; Humans; Immune System; Kynurenic Acid; Kynurenine; Try

2023
Linking nervous and immune systems in psychiatric illness: A meta-analysis of the kynurenine pathway.
    Brain research, 2023, 02-01, Volume: 1800

    Topics: Bipolar Disorder; Depressive Disorder, Major; Humans; Immune System; Kynurenic Acid; Kynurenine; Try

2023
Linking nervous and immune systems in psychiatric illness: A meta-analysis of the kynurenine pathway.
    Brain research, 2023, 02-01, Volume: 1800

    Topics: Bipolar Disorder; Depressive Disorder, Major; Humans; Immune System; Kynurenic Acid; Kynurenine; Try

2023
The kynurenine pathway in bipolar disorder: a meta-analysis on the peripheral blood levels of tryptophan and related metabolites.
    Molecular psychiatry, 2021, Volume: 26, Issue:7

    Topics: Adult; Bipolar Disorder; Humans; Kynurenic Acid; Kynurenine; Observational Studies as Topic; Quinoli

2021
The kynurenine pathway in major depressive disorder, bipolar disorder, and schizophrenia: a meta-analysis of 101 studies.
    Molecular psychiatry, 2021, Volume: 26, Issue:8

    Topics: Bipolar Disorder; Depressive Disorder, Major; Humans; Kynurenic Acid; Kynurenine; Schizophrenia

2021
Tryptophan Catabolites in Bipolar Disorder: A Meta-Analysis.
    Frontiers in immunology, 2021, Volume: 12

    Topics: Bipolar Disorder; Depression; Humans; Inflammation; Kynurenic Acid; Kynurenine; Tryptophan

2021
Ketamine's effect on inflammation and kynurenine pathway in depression: A systematic review.
    Journal of psychopharmacology (Oxford, England), 2021, Volume: 35, Issue:8

    Topics: Animals; Anti-Inflammatory Agents; Antidepressive Agents; Bipolar Disorder; Cytokines; Depressive Di

2021
Metabolomics in patients with psychosis: A systematic review.
    American journal of medical genetics. Part B, Neuropsychiatric genetics : the official publication of the International Society of Psychiatric Genetics, 2018, Volume: 177, Issue:6

    Topics: 3-Hydroxybutyric Acid; Aspartic Acid; Biomarkers; Bipolar Disorder; Creatine; Female; Glutamic Acid;

2018
Bipolar Disorder: The Role of the Kynurenine and Melatonergic Pathways.
    Current pharmaceutical design, 2016, Volume: 22, Issue:8

    Topics: Animals; Bipolar Disorder; Humans; Kynurenine; Melatonin; Signal Transduction; Tryptophan

2016
The kynurenine pathway in schizophrenia and bipolar disorder.
    Neuropharmacology, 2017, Volume: 112, Issue:Pt B

    Topics: Bipolar Disorder; Humans; Kynurenine; Metabolic Networks and Pathways; Schizophrenia

2017
Kynurenines: from the perspective of major psychiatric disorders.
    The FEBS journal, 2012, Volume: 279, Issue:8

    Topics: Animals; Bipolar Disorder; Depressive Disorder, Major; Humans; Kynurenine; Schizophrenia

2012

Trials

4 trials available for kynurenine and Bipolar Disorder

ArticleYear
Effects of adjunctive inflammatory modulation on IL-1β in treatment resistant bipolar depression.
    Brain, behavior, and immunity, 2020, Volume: 87

    Topics: Bipolar Disorder; Celecoxib; Citalopram; Depressive Disorder, Treatment-Resistant; Humans; Interleuk

2020
Kynurenine in blood plasma and DST in patients with endogenous anxiety and endogenous depression.
    Biological psychiatry, 1994, Jul-15, Volume: 36, Issue:2

    Topics: Adrenal Cortex Hormones; Adult; Anxiety Disorders; Bipolar Disorder; Depressive Disorder; Dexamethas

1994
Tryptophan-nicotinamide, imipramine and their combination in depression. A controlled study.
    Acta psychiatrica Scandinavica, 1979, Volume: 59, Issue:4

    Topics: Adult; Bipolar Disorder; Clinical Trials as Topic; Depression; Double-Blind Method; Drug Evaluation;

1979
A controlled clinical trial of L-tryptophan in acute mania.
    Biological psychiatry, 1985, Volume: 20, Issue:5

    Topics: Acute Disease; Adolescent; Adult; Bipolar Disorder; Clinical Trials as Topic; Female; Humans; Kineti

1985

Other Studies

35 other studies available for kynurenine and Bipolar Disorder

ArticleYear
Selective association of cytokine levels and kynurenine/tryptophan ratio with alterations in white matter microstructure in bipolar but not in unipolar depression.
    European neuropsychopharmacology : the journal of the European College of Neuropsychopharmacology, 2022, Volume: 55

    Topics: Biomarkers; Bipolar Disorder; Cytokines; Depressive Disorder, Major; Humans; Kynurenine; Tryptophan;

2022
The Role of Kynurenines in Cognitive Dysfunction in Bipolar Disorder.
    Neuropsychobiology, 2022, Volume: 81, Issue:3

    Topics: Bipolar Disorder; Cognitive Dysfunction; Humans; Inflammation; Kynurenic Acid; Kynurenine; Tryptopha

2022
A mood state-specific interaction between kynurenine metabolism and inflammation is present in bipolar disorder.
    Bipolar disorders, 2020, Volume: 22, Issue:1

    Topics: Adult; Affect; Biomarkers; Bipolar Disorder; C-Reactive Protein; Depression; Female; Humans; Inflamm

2020
Grey and white matter structure associates with the activation of the tryptophan to kynurenine pathway in bipolar disorder.
    Journal of affective disorders, 2019, 12-01, Volume: 259

    Topics: Adult; Biomarkers; Bipolar Disorder; Brain; Female; Gray Matter; Humans; Kynurenine; Magnetic Resona

2019
The kynurenine pathway and bipolar disorder: intersection of the monoaminergic and glutamatergic systems and immune response.
    Molecular psychiatry, 2021, Volume: 26, Issue:8

    Topics: Adolescent; Adult; Aged; Bipolar Disorder; Humans; Immunity; Kynurenic Acid; Kynurenine; Middle Aged

2021
Alterations in plasma kynurenine pathway metabolites in children and adolescents with bipolar disorder and unaffected offspring of bipolar parents: A preliminary study.
    Bipolar disorders, 2021, Volume: 23, Issue:7

    Topics: Adolescent; Adult; Bipolar Disorder; Child; Humans; Kynurenic Acid; Kynurenine; Parents; Tryptophan

2021
Central levels of tryptophan metabolites in subjects with bipolar disorder.
    European neuropsychopharmacology : the journal of the European College of Neuropsychopharmacology, 2021, Volume: 43

    Topics: Bipolar Disorder; Chromatography, Liquid; Humans; Kynurenic Acid; Kynurenine; Tandem Mass Spectromet

2021
The kynurenine pathway in schizophrenia and other mental disorders: Insight from meta-analyses on the peripheral blood levels of tryptophan and related metabolites.
    Schizophrenia research, 2021, Volume: 232

    Topics: Bipolar Disorder; Humans; Kynurenic Acid; Kynurenine; Schizophrenia; Tryptophan

2021
Serum kynurenic acid is reduced in affective psychosis.
    Translational psychiatry, 2017, 05-02, Volume: 7, Issue:5

    Topics: Adult; Affective Disorders, Psychotic; Bipolar Disorder; Corpus Striatum; Cytokines; Depression; Dep

2017
Tryptophan breakdown and cognition in bipolar disorder.
    Psychoneuroendocrinology, 2017, Volume: 81

    Topics: Adult; Bipolar Disorder; Case-Control Studies; Cognition; Female; Humans; Kynurenic Acid; Kynurenine

2017
The role of tryptophan metabolism and food craving in the relationship between obesity and bipolar disorder.
    Clinical nutrition (Edinburgh, Scotland), 2018, Volume: 37, Issue:5

    Topics: Adult; Bipolar Disorder; Body Mass Index; Craving; Eating; Energy Metabolism; Female; Food; Humans;

2018
Total sleep time and kynurenine metabolism associated with mood symptom severity in bipolar disorder.
    Bipolar disorders, 2018, Volume: 20, Issue:1

    Topics: Adult; Affect; Biomarkers; Bipolar Disorder; Depression; Female; Humans; Inflammation; Kynurenine; M

2018
A step ahead: Exploring the gut microbiota in inpatients with bipolar disorder during a depressive episode.
    Bipolar disorders, 2019, Volume: 21, Issue:1

    Topics: Biomarkers; Bipolar Disorder; Case-Control Studies; Cross-Sectional Studies; Depression; Depressive

2019
Tryptophan and Kynurenine Metabolites: Are They Related to Depression?
    Neuropsychobiology, 2019, Volume: 77, Issue:1

    Topics: Adult; Bipolar Disorder; Case-Control Studies; Depressive Disorder, Major; Female; Humans; Hydroxyin

2019
[Tryptophan Metabolites in Plasma of Patients with Depression].
    Brain and nerve = Shinkei kenkyu no shinpo, 2018, Volume: 70, Issue:9

    Topics: Bipolar Disorder; Depressive Disorder; Humans; Kynurenine; Tryptophan

2018
Antidepressant effect of repeated ketamine administration on kynurenine pathway metabolites in patients with unipolar and bipolar depression.
    Brain, behavior, and immunity, 2018, Volume: 74

    Topics: Administration, Intravenous; Adult; Antidepressive Agents; Bipolar Disorder; China; Chromatography,

2018
Metabolic dysfunctions in the kynurenine pathway, noradrenergic and purine metabolism in schizophrenia and bipolar disorders.
    Psychological medicine, 2020, Volume: 50, Issue:4

    Topics: Adolescent; Adult; Bipolar Disorder; Female; Humans; Kynurenine; Male; Metabolic Networks and Pathwa

2020
Differences in Kynurenine Metabolism During Depressive, Manic, and Euthymic Phases of Bipolar Affective Disorder.
    Current topics in medicinal chemistry, 2020, Volume: 20, Issue:15

    Topics: Adult; Bipolar Disorder; Depression; Female; Humans; Kynurenine; Male; Middle Aged; Mood Disorders

2020
Activation of kynurenine pathway in ex vivo fibroblasts from patients with bipolar disorder or schizophrenia: cytokine challenge increases production of 3-hydroxykynurenine.
    Journal of psychiatric research, 2013, Volume: 47, Issue:11

    Topics: Adult; Bipolar Disorder; Cells, Cultured; Cytokines; Female; Fibroblasts; Gene Expression Regulation

2013
Tryptophan breakdown is increased in euthymic overweight individuals with bipolar disorder: a preliminary report.
    Bipolar disorders, 2014, Volume: 16, Issue:4

    Topics: Adult; Bipolar Disorder; Female; Humans; Kynurenine; Male; Middle Aged; Overweight; Tryptophan

2014
Neuroprotective kynurenine metabolite indices are abnormally reduced and positively associated with hippocampal and amygdalar volume in bipolar disorder.
    Psychoneuroendocrinology, 2015, Volume: 52

    Topics: Adult; Amygdala; Bipolar Disorder; Female; Hippocampus; Humans; Kynurenic Acid; Kynurenine; Male; Mi

2015
Kynurenine pathway and white matter microstructure in bipolar disorder.
    European archives of psychiatry and clinical neuroscience, 2018, Volume: 268, Issue:2

    Topics: Adult; Bipolar Disorder; Diffusion Tensor Imaging; Female; Humans; Hydroxyindoleacetic Acid; Kynuren

2018
Increased breakdown of kynurenine towards its neurotoxic branch in bipolar disorder.
    PloS one, 2017, Volume: 12, Issue:2

    Topics: Adult; Bipolar Disorder; Brain; Case-Control Studies; Cognition; Depression; Female; Humans; Inflamm

2017
Two complex genotypes relevant to the kynurenine pathway and melanotropin function show association with schizophrenia and bipolar disorder.
    Schizophrenia research, 2009, Volume: 113, Issue:2-3

    Topics: Adult; Aged; Aged, 80 and over; Bipolar Disorder; Black or African American; Databases, Genetic; Fem

2009
Upregulation of the initiating step of the kynurenine pathway in postmortem anterior cingulate cortex from individuals with schizophrenia and bipolar disorder.
    Brain research, 2006, Feb-16, Volume: 1073-1074

    Topics: Adult; Analysis of Variance; Bipolar Disorder; Chromatography, High Pressure Liquid; Demography; Dep

2006
Tryptophan breakdown pathway in bipolar mania.
    Journal of affective disorders, 2007, Volume: 102, Issue:1-3

    Topics: Adult; Aspartic Acid; Bipolar Disorder; Brief Psychiatric Rating Scale; Female; Gyrus Cinguli; Human

2007
Alterations in kynurenine precursor and product levels in schizophrenia and bipolar disorder.
    Neurochemistry international, 2008, Volume: 52, Issue:6

    Topics: 3-Hydroxyanthranilic Acid; Adult; Biomarkers; Bipolar Disorder; Brain; Chromatography, High Pressure

2008
Adrenal cortical activity changes in manic-depressive illness. Influence on intermediary metabolism of tryptophan.
    Archives of general psychiatry, 1967, Volume: 17, Issue:6

    Topics: 17-Hydroxycorticosteroids; Adrenal Glands; Bipolar Disorder; Carbon Isotopes; Female; Humans; Kynure

1967
[Current biochemical conceptions of mental diseases. II. Role of changes in the biogenic amine system in the pathogenesis of affective disorders].
    Zhurnal nevropatologii i psikhiatrii imeni S.S. Korsakova (Moscow, Russia : 1952), 1980, Volume: 80, Issue:6

    Topics: 3-Methoxy-4-hydroxyphenylethanol; Affective Disorders, Psychotic; Antidepressive Agents, Tricyclic;

1980
Plasma neutral amino acids in mania and depression: variation during acute and prolonged treatment with L-tryptophan.
    Biological psychiatry, 1979, Volume: 14, Issue:1

    Topics: Amino Acids; Bipolar Disorder; Female; Humans; Isoleucine; Kynurenine; Leucine; Middle Aged; Tryptop

1979
The effect of allopurinol on the kynurenine formation in humans following a tryptophan load.
    Acta vitaminologica et enzymologica, 1978, Volume: 32, Issue:5-6

    Topics: Allopurinol; Bipolar Disorder; Humans; Kynurenine; Tryptophan

1978
Plasma amino acids as an index for subgroups in manic depressive psychosis: correlation to effect of tryptophan.
    Psychopharmacology, 1976, Sep-17, Volume: 49, Issue:2

    Topics: Amino Acids; Bipolar Disorder; Drug Resistance; Female; Humans; Kynurenine; Male; Serotonin; Tryptop

1976
Metabolism of tryptophan in depressive disease.
    Archives of general psychiatry, 1973, Volume: 29, Issue:4

    Topics: Adult; Bipolar Disorder; Depression; Humans; Hydroxyindoleacetic Acid; Kynurenine; Male; Metabolic C

1973
Manifest psychopathology and urine biochemical measures. Multivariate analyses in manic-depressive illness.
    Archives of general psychiatry, 1970, Volume: 22, Issue:1

    Topics: 17-Hydroxycorticosteroids; Bipolar Disorder; Creatinine; Emotions; Factor Analysis, Statistical; Fem

1970
Multiple biochemical correlates of manic-depressive illness.
    Journal of psychosomatic research, 1968, Volume: 12, Issue:2

    Topics: 17-Hydroxycorticosteroids; Bipolar Disorder; Blood Pressure; Body Weight; Creatinine; Emotions; Huma

1968