The association between substance P and white matter integrity in medication-naive patients with major depressive disorder

Eunsoo Won, June Kang, Sunyoung Choi, Aram Kim, Kyu Man Han, Ho-Kyoung Yoon, Su Hee Cho, Woo Suk Tae, Min-Soo Lee, Sook Haeng Joe, Yong Ku Kim, Byung-Joo Ham

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Abstract

Substance P (SP) has been implicated in major depressive disorder (MDD), with SP antagonists being studied as potential antidepressants. Although impaired neural plasticity is considered a key mechanism in MDD pathophysiology, the association between SP and brain structural changes in depression has not been investigated. We investigated the correlations between SP levels and white matter (WM) integrity in 42 medication-naive patients with MDD and 57 healthy controls (HCs). Plasma levels of SP were determined, and diffusion tensor imaging (DTI) was performed to investigate microstructural changes in WM tracts. In patients, negative correlations between SP levels and fractional anisotropy (FA) values of the forceps minor of the corpus callosum, and positive correlations between SP levels and radial diffusivity (RD) and mean diffusivity (MD) values of the right corticospinal tract (CST) were observed, with no significant correlations in HCs. Linear regression analyses showed SP levels to significantly predict FA values of the forceps minor, and RD and MD values of the right CST in patients, but not in HCs. We consider our findings to contribute to the neurobiological evidence on the association between SP and brain structural changes in depression, which may be related with the pathophysiology and treatment of MDD.

Original languageEnglish
Article number9707
JournalScientific Reports
Volume7
Issue number1
DOIs
Publication statusPublished - 2017 Dec 1

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Major Depressive Disorder
Substance P
Pyramidal Tracts
Anisotropy
Surgical Instruments
Depression
White Matter
Neuronal Plasticity
Diffusion Tensor Imaging
Corpus Callosum
Brain
Antidepressive Agents
Linear Models
Regression Analysis

ASJC Scopus subject areas

  • General

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The association between substance P and white matter integrity in medication-naive patients with major depressive disorder. / Won, Eunsoo; Kang, June; Choi, Sunyoung; Kim, Aram; Han, Kyu Man; Yoon, Ho-Kyoung; Cho, Su Hee; Tae, Woo Suk; Lee, Min-Soo; Joe, Sook Haeng; Kim, Yong Ku; Ham, Byung-Joo.

In: Scientific Reports, Vol. 7, No. 1, 9707, 01.12.2017.

Research output: Contribution to journalArticle

Won, Eunsoo ; Kang, June ; Choi, Sunyoung ; Kim, Aram ; Han, Kyu Man ; Yoon, Ho-Kyoung ; Cho, Su Hee ; Tae, Woo Suk ; Lee, Min-Soo ; Joe, Sook Haeng ; Kim, Yong Ku ; Ham, Byung-Joo. / The association between substance P and white matter integrity in medication-naive patients with major depressive disorder. In: Scientific Reports. 2017 ; Vol. 7, No. 1.
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