ArticleEuropean child & adolescent psychiatry2025
The correlation of inflammation, tryptophan-kynurenine pathway, and suicide risk in adolescent depression.
Article in European child & adolescent psychiatry, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Development and validation of a machine learning-based screening tool for early detection of adolescent suicide risk.Journal of child psychology and psychiatry, and allied disciplines · 2026Article
- Integrating speech biomarkers and large language models for adolescent suicide risk detection with mobile application for real-world evaluation.Cell reports. Medicine · 2026Article
- Inflammation and treatment strategies for suicidal behavior.The world journal of biological psychiatry : the official journal of the World Federation of Societies of Biological Psychiatry · 2026Review
- The kynurenine pathway storm in epilepsy: mechanisms and therapeutic implications.Acta epileptologica · 2026Review
- Analysis of complete blood counts and derived inflammatory indices with non-suicidal self-injury and suicide attempt in adolescents with major depressive disorder.Frontiers in psychiatry · 2026Article
- Associations of childhood trauma with clinical features and inflammatory cytokines in adolescents with first-episode and recurrent major depressive disorder.Frontiers in immunology · 2026Article
- Ceramides and neuroinflammation as immunometabolic drivers and biomarkers of major depressive disorder, treatment-resistant depression, and suicidal vulnerability.Frontiers in pharmacology · 2026Review
- Associations between peripheral plasma cytokine levels and patterns of non-suicidal self-injury methods among Chinese outpatient adolescents: a latent class analysis.BMC psychiatry · 2025Article
- The Skin-Brain Axis in Psoriasis and Depression: Roles of Inflammation, Hormones, Neuroendocrine Pathways, Neuropeptides, and the Microbiome.Psoriasis (Auckland, N.Z.) · 2025Review
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11 authors.
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Abstract
Accumulating evidence suggests a role for the tryptophan-kynurenine pathway (TKP) in the psychopathology of major depressive disorder (MDD). Abnormal inflammatory profile and production of TKP neurotoxic metabolites appear more pronounced in MDD with suicidality. Progress in understanding the neurobiology of MDD in adolescents lags significantly behind that in adults due to limited empirical evidence. Aims of this study was to investigate the association between inflammation, TKP, and suicidality in adolescent depression. Seventy-three adolescents with MDD were assessed for serum levels of interleukin (IL)-1β, IL-6, IL-18, IL-10, tumor necrosis factor-α (TNF-α), tryptophan (TRP), kynurenine (KYN), 3-hydroxykynurenine (3-HK), and kynurenine acid (KA). Correlations between cytokines and TKP measures were examined. Patients were divided into high- (n = 42) and non-high-suicide-risk groups (n = 31), and serum levels of cytokines and TKP metabolites were compared. Significant negative correlations were found between TRP and IL-8 (r = - 0.27, P < 0.05) and IL-10 (r = - 0.23, P < 0.05), while a significant positive correlation was observed between 3-HK and IL-8 (r = 0.39, P < 0.01) in depressed adolescents. The KYN/TPR (index of indoleamine 2,3-dioxygenase, IDO) was positively correlated with IL-1β (r = 0.34), IL-6 (r = 0.32), IL-10 (r = 0.38) and TNF-α (r = 0.35) levels (P < 0.01); and 3-HK/KYN (index of kynurenine3-monooxidase, KMO) was positively correlated with IL-8 level (r = 0.31, P < 0.01). Depressed adolescents at high suicide risk exhibited significantly higher levels of IL-1β (Z = 2.726, P < 0.05), IL-10 (Z = 2.444, P < 0.05), and TNF-α (Z = 2.167, P < 0.05) and lower levels of 3-HK (Z = 2.126, P < 0.05) compared to their non-high suicide risk counterparts. Our findings indicated that serum inflammatory cytokines were robustly associated with IDO and KMO activity, along with significantly decreased serum level of TRP, increased level of 3-HK, and higher suicide risk in adolescent depression.
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