Journal Article

FZJ-2016-01917

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Resting-state functional connectivity of emotion regulation networks in euthymic and non-euthymic bipolar disorder patients.

Rey, G. (Corresponding author) ; Piguet, C. ; Benders, A. ; Favre, S. ; Eickhoff, S.FZJ* ; Aubry, J.-M. ; Vuilleumier, P.

2016
Elsevier Paris

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Please use a persistent id in citations: doi:10.1016/j.eurpsy.2015.12.005

Abstract: Previous functional magnetic resonance imaging studies in bipolar disorder (BD) have evidenced changes in functional connectivity (FC) in brain areas associated with emotion processing, but how these changes vary with mood state and specific clinical symptoms is not fully understood.We investigated resting-state FC between a priori regions of interest (ROIs) from the default-mode network and key structures for emotion processing and regulation in 27 BD patients and 27 matched healthy controls. We further compared connectivity patterns in subgroups of 15 euthymic and 12 non-euthymic patients and tested for correlations of the connectivity strength with measures of mood, anxiety, and rumination tendency. No correction for multiple comparisons was applied given the small population sample and pre-defined target ROIs.Overall, regardless of mood state, BD patients exhibited increased FC of the left amygdala with left sgACC and PCC, relative to controls. In addition, non-euthymic BD patients showed distinctive decrease in FC between right amygdala and sgACC, whereas euthymic patients showed lower FC between PCC and sgACC. Euthymic patients also displayed increased FC between sgACC and right VLPFC. The sgACC-PCC and sgACC-left amygdala connections were modulated by rumination tendency in non-euthymic patients, whereas the sgACC-VLPFC connection was modulated by both the current mood and tendency to ruminate.Our results suggest that sgACC-amygdala coupling is critically affected during mood episodes, and that FC of sgACC play a pivotal role in mood normalization through its interactions with the VLPFC and PCC. However, these preliminary findings require replication with larger samples of patients.

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Contributing Institute(s):

1. Strukturelle und funktionelle Organisation des Gehirns (INM-1)

Research Program(s):

1. 571 - Connectivity and Activity (POF3-571) (POF3-571)

Appears in the scientific report 2016

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Database coverage:
; BIOSIS Previews ; Current Contents - Clinical Medicine ; Current Contents - Social and Behavioral Sciences ; IF < 5 ; JCR ; NCBI Molecular Biology Database ; No Authors Fulltext ; SCOPUS ; Science Citation Index Expanded ; Social Sciences Citation Index ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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