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Study M1030

Study name

Brum M 2023

Title

Phase-and disorder-specific differences in peripheral metabolites of the kynurenine pathway in major depression, bipolar affective disorder and schizophrenia

Overall design

The aim of this study was to investigate if individual catabolites could serve as diagnostic biomarkers for major depressive disorder (MDD), bipolar disorder and schizophrenia. The sample consisted of 40 participants suffering from MDD in an acute episode (MDD group) and 40 healthy controls (control group). The patients received inpatient treatment, with a mean duration of 30 days. MDD participants were further classified as remitters if their MADRS scores were no more than 10 after treatment. Plasma levels of tryptophan, kynurenine, kynurenic acid, quinolinic acid and ratio of quinolinic acid/kynurenic acid were measured using liquid chromatography mass spectrometry in participants compared with controls. Differences between baseline and after treatment as usual, and between responders and non-responders were also analyzed.

Study Type

Type1;

Type2;

Type4;

Data available

Unavailable

Organism

Human;

Categories of depression

Depressive disorder; Depression; Depression;

Criteria for depression

ICD-10 diagnosed MDD

Sample size

80

Tissue

Peripheral; Blood; Plasma;

Platform

MS-based; LC-MS: LC-MS/MS (Agilent 1290 Series; API 6500 AB Sciex);

PMID

36648064

DOI

10.1080/15622975.2023.2169348

Citation

Brum M, Nieberler M, Kehrwald C, et al. Phase-and disorder-specific differences in peripheral metabolites of the kynurenine pathway in major depression, bipolar affective disorder and schizophrenia. World J Biol Psychiatry. 2023 Jan 30:1-14.

Metabolite

Kynurenic acid;