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Study M864

Study name

Doss MK 2021

Title

Psilocybin therapy increases cognitive and neural flexibility in patients with major depressive disorder

Overall design

In this study, the authors utilized multi-modal brain imaging measurements to examine the enduring effects of psilocybin therapy on cognitive and neural flexibility in patients with major depressive disorder (MDD). In an open-label study of 24 patients with MDD, participants were randomly assigned to an immediate treatment (psilocybin group, n = 13) and delayed treatment group (control group, n = 11), respectively. Participants attended two psilocybin sessions separated by ~1.6 weeks (session 1: 20 mg/70 kg; session 2: 30 mg/70 kg). Neurometabolite concentrations in the anterior cingulate cortex and hippocampus were detected before and after psilocybin treatment via magnetic resonance spectroscopy. Metabolite quantification was reported relative to total creatine as the reference peak.

Study Type

Type2;

Data available

Unavailable

Organism

Human;

Categories of depression

Depressive disorder; Depression; Depression;

Criteria for depression

DSM-5 diagnosed MDD, HAMD-17 >= 17

Sample size

24

Tissue

Central; Brain; Anterior cingulate cortex;

Central; Brain; Hippocampus;

Platform

MRS; MRS: 7 T MRI (Philips Achieva, Best, The Netherlands);

PMID

34750350

DOI

10.1038/s41398-021-01706-y

Citation

Doss MK, Povazan M, Rosenberg MD, et al. Psilocybin therapy increases cognitive and neural flexibility in patients with major depressive disorder. Transl Psychiatry. 2021 Nov 8;11(1):574.

Metabolite

N-Acetyl aspartate/(Creatine and Phosphocreatine) ratio;

Glutamate/(Creatine and Phosphocreatine) ratio;