Intranasal oxytocin alters amygdala-temporal resting-state functional connectivity in body dysmorphic disorder : A double-blind placebo-controlled randomized trial
Journal article
Grace, Sally A., Labuschagne, Izelle, Castle, David J. and Rossell, Susan L.. (2019). Intranasal oxytocin alters amygdala-temporal resting-state functional connectivity in body dysmorphic disorder : A double-blind placebo-controlled randomized trial. Psychoneuroendocrinology. 107, pp. 179-186. https://doi.org/10.1016/j.psyneuen.2019.05.022
Authors | Grace, Sally A., Labuschagne, Izelle, Castle, David J. and Rossell, Susan L. |
---|---|
Abstract | The aetiology of body dysmorphic disorder (BDD) is poorly understood. Recent evidence from functional brain imaging studies suggests that BDD is associated with aberrant task-based functional connectivity and that intranasal oxytocin (OXT) may improve network connectivity in BDD patients. Thus, the aim of this study was to investigate the effect of intranasal OXT on amygdala resting-state functional connectivity (rsFC) in BDD. In a randomized, double-blind, cross-over design, 19 BDD participants and 17 demographically matched healthy control participants received intranasal OXT (24 IU) or placebo prior to resting-state functional magnetic resonance imaging. The left and right amygdala were seeded as regions of interest, and temporal correlations between the amygdalae and all other voxels comprising cortical and subcortical grey matter were investigated. Compared to healthy controls, BDD patients showed greater baseline (placebo) rsFC between the left amygdala and two clusters within the left temporal lobe and one cluster within the superior frontal gyrus which was reversed following OXT administration. The control group also showed significantly greater rsFC between the left amygdala and anterior prefrontal cortex in the OXT session compared to placebo. Whilst preliminary, these findings suggest that BDD patients exhibit abnormal amygdala-temporal connectivity at rest, and OXT might have a role in changing this functional relationship. |
Keywords | resting-state fMRI; oxytocin; attention; functional connectivity; salience; psychiatry |
Year | 2019 |
Journal | Psychoneuroendocrinology |
Journal citation | 107, pp. 179-186 |
Publisher | Pergamon Press |
ISSN | 0306-4530 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.psyneuen.2019.05.022 |
Scopus EID | 2-s2.0-85066109926 |
Research or scholarly | Research |
Page range | 179-186 |
Publisher's version | License All rights reserved File Access Level Controlled |
Output status | Published |
Publication dates | |
Online | 22 May 2019 |
Publication process dates | |
Accepted | 21 May 2019 |
Deposited | 03 Jun 2021 |
https://acuresearchbank.acu.edu.au/item/8w263/intranasal-oxytocin-alters-amygdala-temporal-resting-state-functional-connectivity-in-body-dysmorphic-disorder-a-double-blind-placebo-controlled-randomized-trial
Restricted files
Publisher's version
90
total views0
total downloads0
views this month0
downloads this month