ArticleScientific reports2021
Quinolinic acid is associated with cognitive deficits in schizophrenia but not major depressive disorder.
Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 3 of them syntheses that pooled it.
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Who cites it
24 citing papers in PubMed, 3 syntheses or guidelines pooled it, 47 citations in OpenAlex.
- Importance of the dysregulation of the kynurenine pathway on cognition in schizophrenia: a systematic review of clinical studies.European archives of psychiatry and clinical neuroscience · 2023Pooled it
- The tryptophan catabolite or kynurenine pathway in schizophrenia: meta-analysis reveals dissociations between central, serum, and plasma compartments.Molecular psychiatry · 2022Pooled it
- The relationship between immune and cognitive dysfunction in mood and psychotic disorder: a systematic review and a meta-analysis.Molecular psychiatry · 2022Pooled it
- Targeting the microglial phosphatidylethanolamine synthesis pathway promotes GABARAP-associated phagocytosis and Aβ clearance in Alzheimer's disease.Signal transduction and targeted therapy · 2026Article
- From microbes to milestones: Gut bacterial abundances and functional pathways associate with neurodevelopment following preterm birth.Gut microbiology · 2026Article
- Cell Signaling by Tryptophan Catabolism.Biochemistry · 2026Review
- Kynurenine pathway metabolites are increased in inflammatory depression and decrease with omega-3 treatment.Brain, behavior, & immunity - health · 2026Article
- Contextual Regulation of the Kynurenine Pathway and Its Relevance for Personalized Psychiatry.Journal of personalized medicine · 2026Review
- Evaluation of Cranberry as a Novel Therapeutic Strategy for Intracerebroventricular (ICV) Quinolinic Acid-induced Cognitive Impairment in Rats.Combinatorial chemistry & high throughput screening · 2026Article
- Microglia-derived metabolites as novel signaling molecules: regulating neural circuit function, behavior, and their role in psychiatric disorders.Frontiers in cellular neuroscience · 2026Review
- Plasma and Visceral Organ Kynurenine Metabolites Correlate in the Multiple Sclerosis Cuprizone Animal Model.International journal of molecular sciences · 2025Article
- Poly I:C-induced maternal immune activation causes schizophrenia-like behaviors in the offspring of both sexes by regulating gut microbiota and tryptophan metabolism pathway.Frontiers in microbiology · 2025Article
- Associations between Kynurenine pathway metabolites and cognitive dysfunction in major depressive disorder.PloS one · 2025Article
- Neuroinflammation and kynurenines in schizophrenia: Impact on cognition depending on cognitive functioning and modulatory properties in relation to cognitive remediation and aerobic exercise.Schizophrenia research. Cognition · 2024Article
- Effects of 6-week olanzapine treatment on serum IL-2, IL-4, IL-8, IL-10, and TNF-α levels in drug-naive individuals with first-episode schizophrenia.BMC psychiatry · 2024Article
- Altered kynurenine pathway metabolism and association with disease activity in patients with systemic lupus.Amino acids · 2023Article
- The Tryptophan-Kynurenine Metabolic System Is Suppressed in Cuprizone-Induced Model of Demyelination Simulating Progressive Multiple Sclerosis.Biomedicines · 2023Article
- The tryptophan catabolite or kynurenine pathway in major depressive and bipolar disorder: A systematic review and meta-analysis.Brain, behavior, & immunity - health · 2022Review
- Mental Health Symptom Reduction Using Digital Therapeutics Care Informed by Genomic SNPs and Gut Microbiome Signatures.Journal of personalized medicine · 2022Article
- Peripheral interleukin-6-associated microglial QUIN elevation in basolateral amygdala contributed to cognitive dysfunction in a mouse model of postoperative delirium.Frontiers in medicine · 2022Article
Corrections and comments
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Authors and funding
5 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Tryptophan and its catabolites (TRYCATs) have been suggested to link peripheral immune system activation and central neurotransmitter abnormalities with relevance to the etio-pathophysiology of schizophrenia (SZ) and major depressive disorder (MDD). The relationship to different psychopathological dimensions within these disorders however remains to be elucidated. We thus investigated potential group differences of tryptophan, kynurenine, kynurenic acid, 3-hydroxy kynurenine and quinolinic acid in the plasma of 19 healthy controls (HC), 45 patients with SZ and 43 patients with MDD and correlated plasma proteins with the "motivation and pleasure" dimension and cognition. After correcting for the covariates age, sex, body mass index, smoking and medication, patients with MDD showed lower kynurenine and 3-hydroxy kynurenine levels compared to HC. Quinolinic acid correlated negatively with composite cognitive score in patients with SZ, indicating that more severe cognitive impairments were associated with increased plasma levels of quinolinic acid. No correlations were found in patients with MDD. These results indicate that MDD and SZ are associated with dysregulation of the kynurenine pathway. Quinolinic acid might be specifically implicated in the pathophysiology of cognitive deficits in patients with SZ. Further studies are needed to determine whether TRYCATs are causally involved in the etiology of these neuropsychiatric disorders.
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