A1 Refereed original research article in a scientific journal
Microstructural abnormalities in white matter and their effect on depressive symptoms after stroke
Authors: Yasuno F, Taguchi A, Yamamoto A, Kajimoto K, Kazui H, Sekiyama A, Matsuoka K, Kitamura S, Kiuchi K, Kosaka J, Kishimoto T, Iida H, Nagatsuka K
Publisher: ELSEVIER IRELAND LTD
Publication year: 2014
Journal: Psychiatry Research: Neuroimaging
Journal name in source: PSYCHIATRY RESEARCH-NEUROIMAGING
Journal acronym: PSYCHIAT RES-NEUROIM
Volume: 223
Issue: 1
First page : 9
Last page: 14
Number of pages: 6
ISSN: 0925-4927
DOI: https://doi.org/10.1016/j.pscychresns.2014.04.009
Abstract
The aim of the study was to investigate the existence of microstructural abnormalities in the white matter of the brain in stroke patients, as well as the relationship between these microstructural abnormalities and changes in depressive symptoms over 6 months. Participants were 29 acute ischemic stroke patients and 37 healthy control subjects. Depressive symptoms were assessed in all subjects using the Hamilton Rating Scale for Depression and the Zung Self-rating Depression Scale. Whole brain voxel-based analysis was used to compare diffusion tensor imaging measures of Fractional Anisotropy (FA) between the groups. Six-month follow-up examinations were conducted. Patients showed significantly lower white matter FA values in the left and right anterior limbs of the internal capsule, and 6 months after the stroke they showed significantly increased FA values in these regions. We found a significant negative correlation between the increased ratio of the FA values and the change in depression scale scores at 6-month follow-up. Regional white matter damage may reflect abnormalities in neuroanatomical pathways related to the pathophysiology of depression. (C) 2014 Elsevier Ireland Ltd. All rights reserved.
The aim of the study was to investigate the existence of microstructural abnormalities in the white matter of the brain in stroke patients, as well as the relationship between these microstructural abnormalities and changes in depressive symptoms over 6 months. Participants were 29 acute ischemic stroke patients and 37 healthy control subjects. Depressive symptoms were assessed in all subjects using the Hamilton Rating Scale for Depression and the Zung Self-rating Depression Scale. Whole brain voxel-based analysis was used to compare diffusion tensor imaging measures of Fractional Anisotropy (FA) between the groups. Six-month follow-up examinations were conducted. Patients showed significantly lower white matter FA values in the left and right anterior limbs of the internal capsule, and 6 months after the stroke they showed significantly increased FA values in these regions. We found a significant negative correlation between the increased ratio of the FA values and the change in depression scale scores at 6-month follow-up. Regional white matter damage may reflect abnormalities in neuroanatomical pathways related to the pathophysiology of depression. (C) 2014 Elsevier Ireland Ltd. All rights reserved.
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