Metabolic pathway that produces the NAD coenzyme
The kynurenine pathway
The kynurenine pathway is a metabolic pathway leading to the production of nicotinamide adenine dinucleotide (NAD+ ).[ 1] Metabolites involved in the kynurenine pathway include tryptophan , kynurenine , kynurenic acid , xanthurenic acid , quinolinic acid , and 3-hydroxykynurenine .[ 2] [ 3] The kynurenine pathway is responsible for about 95% of total tryptophan catabolism.[ 4] Disruption in the pathway is associated with certain genetic and psychiatric disorders .[ 5] [ 2] [ 6] [ 7] [ 8]
^ Bartoli, F; Cioni, RM; Cavaleri, D; Callovini, T; Crocamo, C; Misiak, B; Savitz, JB; Carrà, G (11 November 2022). "The association of kynurenine pathway metabolites with symptom severity and clinical features of bipolar disorder: An overview" . European Psychiatry . 65 (1): e82. doi :10.1192/j.eurpsy.2022.2340 . PMC 9724221 . PMID 36366795 .
^ a b Bartoli, F; Misiak, B; Callovini, T; Cavaleri, D; Cioni, RM; Crocamo, C; Savitz, JB; Carrà, G (July 2021). "The kynurenine pathway in bipolar disorder: a meta-analysis on the peripheral blood levels of tryptophan and related metabolites". Molecular Psychiatry . 26 (7): 3419– 3429. doi :10.1038/s41380-020-00913-1 . PMID 33077852 . S2CID 224314102 .
^ Savitz, J (25 January 2020). "The kynurenine pathway: a finger in every pie" . Molecular Psychiatry . 25 (1): 131– 147. doi :10.1038/s41380-019-0414-4 . PMC 6790159 . PMID 30980044 .
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^ Marx, Wolfgang; McGuinness, Amelia J.; Rocks, Tetyana; Ruusunen, Anu; Cleminson, Jasmine; Walker, Adam J.; Gomes-da-Costa, Susana; Lane, Melissa; Sanches, Marsal; Diaz, Alexandre P.; Tseng, Ping-Tao (August 2021). "The kynurenine pathway in major depressive disorder, bipolar disorder, and schizophrenia: a meta-analysis of 101 studies" . Molecular Psychiatry . 26 (8): 4158– 4178. doi :10.1038/s41380-020-00951-9 . ISSN 1359-4184 . PMID 33230205 . S2CID 227132820 .
^ Bartoli, F; Cioni, RM; Callovini, T; Cavaleri, D; Crocamo, C; Carrà, G (17 May 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 . 232 : 61– 62. doi :10.1016/j.schres.2021.04.008 . PMID 34015557 . S2CID 235074432 .
^ Morrens, Manuel; De Picker, Livia; Kampen, Jarl K.; Coppens, Violette (September 2020). "Blood-based kynurenine pathway alterations in schizophrenia spectrum disorders: A meta-analysis" . Schizophrenia Research . 223 : 43– 52. doi :10.1016/j.schres.2020.09.007 . ISSN 1573-2509 . PMID 32981827 . S2CID 221883723 .
^ Arnone, Danilo; Saraykar, Smita; Salem, Haitham; Teixeira, Antonio L.; Dantzer, Robert; Selvaraj, Sudhakar (September 2018). "Role of Kynurenine pathway and its metabolites in mood disorders: A systematic review and meta-analysis of clinical studies" . Neuroscience and Biobehavioral Reviews . 92 : 477– 485. doi :10.1016/j.neubiorev.2018.05.031 . ISSN 1873-7528 . PMC 6686193 . PMID 29940237 .