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Resting-state functional connectivity of the amygdala in suicide attempters with major depressive disorder

Authors
Kang, Seung-GulNa, Kyoung-SaeChoi, Jae-WonKim, Jeong-HeeSon, Young-DonLee, Yu Jin
Issue Date
3-7월-2017
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Keywords
Suicide attempt; fMRI; Resting state functional connectivity; Amygdala; Major depressive disorder
Citation
PROGRESS IN NEURO-PSYCHOPHARMACOLOGY & BIOLOGICAL PSYCHIATRY, v.77, pp.222 - 227
Indexed
SCIE
SCOPUS
Journal Title
PROGRESS IN NEURO-PSYCHOPHARMACOLOGY & BIOLOGICAL PSYCHIATRY
Volume
77
Start Page
222
End Page
227
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/82858
DOI
10.1016/j.pnpbp.2017.04.029
ISSN
0278-5846
Abstract
In this study, we investigated the difference in resting-state functional connectivity (RSFC) of the amygdala between suicide attempters and non-suicide attempters with major depressive disorder (MDD) using functional magnetic resonance imaging (fMRI). This study included 19 suicide attempters with MDD and 19 non-suicide attempters with MDD. RSFC was compared between the two groups and the regression analyses were conducted to identify the correlation between RSFC and Scale for Suicide Ideation (SSI) scores in the suicide attempt group. Statistical significance was set at p-value (uncorrected) < 0.005 with k >= 28 voxels. Compared with non-suicide attempters, suicide attempters showed significantly increased RSFC of the left amygdala with the right insula and left superior orbitofrontal area, and increased RSFC of the right amygdala with the left middle temporal area. The regression analysis showed a significant correlation between the SSI total score and RSFC of the right amygdala with the right parahippocampal area in the suicide attempt group. The present RSFC findings provide evidence of a functional neural basis and will help reveal the pathophysiology underlying suicidality in subjects with MDD.
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