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Title: Structural and Functional Brain Correlates of Cognitive Impairment in Euthymic Patients with Bipolar Disorder
Author: Alonso Lana, Silvia
Goikolea, José Manuel
Bonnín, Caterina del Mar
Sarró, Salvador
Segura i Fàbregas, Bàrbara
Amann, Benedikt L.
Monté Rubio, Gemma C.
Moro, Noemi
Fernandez Corcuera, Paloma
Maristany, Teresa
Salvador, Raymond
Vieta i Pascual, Eduard, 1963-
Pomarol-Clotet, Edith
McKenna, Peter J.
Keywords: Trastorn bipolar
Trastorns de la cognició
Psicologia cognitiva
Ressonància magnètica
Estudi de casos
Manic-depressive illness
Cognition disorders
Cognitive psychology
Magnetic resonance
Case studies
Issue Date: 22-Jul-2016
Publisher: Public Library of Science (PLoS)
Abstract: Introduction Cognitive impairment in the euthymic phase is a well-established finding in bipolar disorder. However, its brain structural and/or functional correlates are uncertain. Methods Thirty-three euthymic bipolar patients with preserved memory and executive function and 28 euthymic bipolar patients with significant memory and/or executive impairment, as defined using two test batteries, the Rivermead Behavioural Memory Test (RBMT) and the Behavioural Assessment of the Dysexecutive Syndrome (BADS), plus 28 healthy controls underwent structural MRI using voxel-based morphometry (VBM). Twenty-seven of the cognitively preserved patients, 23 of the cognitively impaired patients and 28 controls also underwent fMRI during performance of the n-back working memory task. Results No clusters of grey or white matter volume difference were found between the two patient groups. During n-back performance, the cognitively impaired patients showed hypoactiva- tion compared to the cognitively preserved patients in a circumscribed region in the right dorsolateral prefrontal cortex. Both patient groups showed failure of de-activation in the medial frontal cortex compared to the healthy controls. Conclusions Cognitive impairment in euthymic bipolar patients appears from this study to be unrelated to structural brain abnormality, but there was some evidence for an association with altered prefrontal function.
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It is part of: PLoS One, 2016, vol. 11, num. 7, p. e0158867
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ISSN: 1932-6203
Appears in Collections:Articles publicats en revistes (Medicina)
Articles publicats en revistes (IDIBAPS: Institut d'investigacions Biomèdiques August Pi i Sunyer)

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