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Study M189

Study name

Young KD 2016

Title

Kynurenine pathway metabolites are associated with hippocampal activity during autobiographical memory recall in patients with depression

Overall design

The aim of this study was to test whether the ratios, kynurenic acid/3-hydroxykynurenine (KynA/3HK) and kynurenic acid/quinolinic acid (KynA/QA) were associated with autobiographical memory (AM) recall performance as well as hippocampal activity during AM recall. Thirty-five unmedicated depressed participants (depressed group) and 25 healthy controls (control group) underwent fMRI scanning while recalling emotionally-valenced AMs and provided serum samples for the quantification of kynurenine metabolites, CRP, and cytokines (IL-1RA; IL-6, TNF, interferon gamma -IFN-c, IL-10). The serum metabolite concentrations were determined by highperformance liquid chromatography (HPLC) with tandem mass spectrometry (MS/MS).

Study Type

Type1;

Data available

Unavailable

Organism

Human;

Categories of depression

Depressive disorder; Depression; Depression;

Criteria for depression

DSM-IV-TR diagnosed MDD

Sample size

60

Tissue

Peripheral; Blood; Serum;

Platform

MS-based; LC-MS: not reported;

PMID

27091600

DOI

10.1016/j.bbi.2016.04.007

Citation

Young KD, Drevets WC, Dantzer R, et al. Kynurenine pathway metabolites are associated with hippocampal activity during autobiographical memory recall in patients with depression. Brain Behav Immun 2016;56:335-42.

Metabolite

Kynurenic acid/Quinolinic acid ratio;

Kynurenic acid/Hydroxykynurenine ratio;