Segregation of salience network predicts treatment response of depression to repetitive transcranial magnetic stimulation.

Autor:	Fan J; Medical Psychological Center, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China; Medical Psychological Institute of Central South University, Changsha, Hunan, China., Tso IF; Department of Psychiatry, University of Michigan, Ann Arbor, MI, USA; Department of Psychology, University of Michigan, Ann Arbor, MI, USA., Maixner DF; Department of Psychiatry, University of Michigan, Ann Arbor, MI, USA., Abagis T; Department of Psychology, University of Michigan, Ann Arbor, MI, USA., Hernandez-Garcia L; fMRI Laboratory, University of Michigan, Ann Arbor, MI, USA., Taylor SF; Department of Psychiatry, University of Michigan, Ann Arbor, MI, USA. Electronic address: sftaylor@umich.edu.
Jazyk:	angličtina
Zdroj:	NeuroImage. Clinical [Neuroimage Clin] 2019; Vol. 22, pp. 101719. Date of Electronic Publication: 2019 Feb 13.
DOI:	10.1016/j.nicl.2019.101719
Abstrakt:	Background: The present study tested the hypothesis that network segregation, a graph theoretic measure of functional organization of the brain, is correlated with treatment response in patients with major depressive disorder (MDD) undergoing repetitive transcranial magnetic stimulation (rTMS). Methods: Network segregation, calculated from resting state functional magnetic resonance imaging scans, was measured in 32 patients with MDD who entered a sham-controlled, double-blinded, randomized trial of rTMS to the left dorsolateral prefrontal cortex, and a cohort of 20 healthy controls (HCs). Half of the MDD patients received sham treatment in the blinded phase, followed by active rTMS in the open-label phase. The analyses focused on segregation of the following networks: default mode (DMN), salience (SN), fronto-parietal (FPN), cingulo-opercular (CON), and memory retrieval (MRN). Results: There was no differential change in network segregation comparing sham to active treatment. However, in the combined group of patients who completed active rTMS treatment (in the blinded plus open-label phases), higher baseline segregation of SN significantly predicted more symptom improvement after rTMS. Compared to HCs at baseline, MDD patients showed decreased segregation in DMN, and trend-level decreases in SN and MRN. Conclusion: The results highlight the importance of network segregation in MDD, particularly in the SN, where more normal baseline segregation of SN may predict better treatment response to rTMS in depression. (Copyright © 2019 The Authors. Published by Elsevier Inc. All rights reserved.)
Databáze:	MEDLINE
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