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Study M913

Study name

Kamishikiryo T 2022

Title

Left DLPFC activity is associated with plasma kynurenine levels and can predict treatment response to escitalopram in major depressive disorder

Overall design

The aim of this study was to determine the relationship between regional brain activity at rest and blood metabolites related to treatment response to escitalopram to identify the characteristics of depression that respond to treatment. Blood metabolite levels and resting-state brain activity were measured in patients with moderate to severe depression (depression group, n = 65) before and after 6-8 weeks of treatment with escitalopram, and these were compared between responders (>50% reduction in the HRSD score; responder group, n = 32) and nonresponders (nonresponder group, n = 33) to treatment. The relationship between plasma metabolites and brain activity related to treatment responsiveness were examined in patients and healthy controls (control group, n = 36).

Study Type

Type1;

Type2;

Type4;

Data available

Unavailable

Organism

Human;

Categories of depression

Depressive disorder; Depression; Depression;

Criteria for depression

DSM-IV diagnosed MDD, HAMD-17 >= 14

Sample size

101

Tissue

Peripheral; Blood; Plasma;

Platform

MS-based; CE-MS: Agilent 7100 CE-6230 TOFMS (Agilent Technologies, Palo Alto, CA, USA);

PMID

35543406

DOI

10.1111/pcn.13373

Citation

Kamishikiryo T, Okada G, Itai E, et al. Left DLPFC activity is associated with plasma kynurenine levels and can predict treatment response to escitalopram in major depressive disorder. Psychiatry Clin Neurosci. 2022 May 11.

Metabolite

L-Phenylalanine;

L-Tryptophan;

L-Valine;

L-Leucine;

L-Isoleucine;

L-Asparagine;

L-Tyrosine;

L-Arginine;

Choline;

Dimethylglycine;

L-Kynurenine;

Hypoxanthine;

Betaine;

Creatine;

L-Histidine;

Kynurenine/Tryptophan ratio;

Citronellyl anthranilate;