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Título: Antidepressant effects of tDCS are associated with prefrontal gray matter volumes at baseline: Evidence from the ELECT-TDCS trial
Autor: BULUBAS, LuciaPADBERG, FrankV, Priscila BuenoDURAN, FabioBUSATTO, GeraldoAMARO JR., EdsonBENSENOR, Isabela M.LOTUFO, Paulo A.GOERIGK, StephanGATTAZ, WagnerKEESER, DanielBRUNONI, Andre R.
Citación: BRAIN STIMULATION, v.12, n.5, p.1197-1204, 2019
Resumen: Background: Transcranial direct current stimulation (tDCS) is a promising intervention for major depression. However, its clinical effects are heterogeneous. We investigated, in a subsample of the randomized, clinical trial Escitalopram versus Electrical Direct Current Therapy for Depression Study (ELECT-TDCS), whether the volumes of left and right prefrontal cortex (PFC) and anterior cingulate cortex (ACC) were associated with prefrontal tDCS response. Methods: Baseline structural T1 weighted MRI data were analyzed from 52 patients (15 males). Patients were randomized to the following conditions: escitalopram 20 mg/day, bifrontal tDCS (2 mA, 30min, 22 sessions), or placebo. Antidepressant outcomes were assessed over a treatment period of 10 weeks. Voxel-based gray matter volumes of PFC and ACC were determined using state-of-the-art parcellation approaches. Results: According to our a priori hypothesis, in the left dorsal PFC, larger gray matter volumes were associated with depression improvement in the tDCS group (n = 15) compared to sham (n = 21) (Cohen's d = 0.3, 95% confidence interval [0.01; 0.6], p = 0.04). Neither right PFC nor ACC volumes were associated with depression improvement. Exploratory analyses of distinct PFC subregions were performed, but no area was associated with tDCS response after correction for multiple comparisons. Conclusion: Left PFC baseline gray matter volume was associated with tDCS antidepressant effects. This brain region and its subdivisions should be investigated further as a potential neurobiological predictor for prefrontal tDCS treatment in depression and might be correlated with tDCS antidepressant mechanisms of action.
Aparece en las colecciones:

Artigos e Materiais de Revistas Científicas - FM/MCM
Departamento de Clínica Médica - FM/MCM

Artigos e Materiais de Revistas Científicas - FM/MDR
Departamento de Radiologia - FM/MDR

Artigos e Materiais de Revistas Científicas - FM/MPS
Departamento de Psiquiatria - FM/MPS

Artigos e Materiais de Revistas Científicas - HC/ICHC
Instituto Central - HC/ICHC

Artigos e Materiais de Revistas Científicas - HC/IPq
Instituto de Psiquiatria - HC/IPq

Artigos e Materiais de Revistas Científicas - LIM/20
LIM/20 - Laboratório de Terapêutica Experimental

Artigos e Materiais de Revistas Científicas - LIM/21
LIM/21 - Laboratório de Neuroimagem em Psiquiatria

Artigos e Materiais de Revistas Científicas - LIM/27
LIM/27 - Laboratório de Neurociências

Artigos e Materiais de Revistas Científicas - LIM/44
LIM/44 - Laboratório de Ressonância Magnética em Neurorradiologia


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