Brain Volumetric Correlates of Right Unilateral Versus Bitemporal Electroconvulsive Therapy for Treatment-Resistant Depression.
Bitemporal Electroconvulsive Therapy
Brain Morphometry
Right Unilateral Electroconvulsive Therapy
Treatment-Resistant Depression
Journal
The Journal of neuropsychiatry and clinical neurosciences
ISSN: 1545-7222
Titre abrégé: J Neuropsychiatry Clin Neurosci
Pays: United States
ID NLM: 8911344
Informations de publication
Date de publication:
2019
2019
Historique:
pubmed:
22
11
2018
medline:
18
12
2019
entrez:
22
11
2018
Statut:
ppublish
Résumé
The selection of a bitemporal (BT) or right unilateral (RUL) electrode placement affects the efficacy and side effects of ECT. Previous studies have not entirely described the neurobiological underpinnings of such differential effects. Recent neuroimaging research on gray matter volumes is contributing to our understanding of the mechanism of action of ECT and could clarify the differential mechanisms of BT and RUL ECT. To assess the whole-brain gray matter volumetric changes observed after treating patients with treatment-resistant depression with BT or RUL ECT, the authors used MRI to assess 24 study subjects with treatment-resistant depression (bifrontotemporal ECT, N=12; RUL ECT, N=12) at two time points (before the first ECT session and after ECT completion). Study subjects receiving BT ECT showed gray matter volume increases in the bilateral limbic system, but subjects treated with RUL ECT showed gray matter volume increases limited to the right hemisphere. The authors observed significant differences between the two groups in midtemporal and subcortical limbic structures in the left hemisphere. These findings highlight that ECT-induced gray matter volume increases may be specifically observed in the stimulated hemispheres. The authors suggest that electrode placement may relevantly contribute to the development of personalized ECT protocols.
Identifiants
pubmed: 30458664
doi: 10.1176/appi.neuropsych.18080177
pmc: PMC7857738
mid: NIHMS1588995
doi:
Types de publication
Comparative Study
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
152-158Subventions
Organisme : NIMH NIH HHS
ID : R01 MH112737
Pays : United States
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