Patterns of cortical thickness associated with impulse control disorders in Parkinson's disease.
Identifieur interne : 000125 ( Main/Exploration ); précédent : 000124; suivant : 000126Patterns of cortical thickness associated with impulse control disorders in Parkinson's disease.
Auteurs : Roberta Biundo [Italie] ; Luca Weis ; Silvia Facchini ; Patrizia Formento-Dojot ; Annamaria Vallelunga ; Manuela Pilleri ; Daniel Weintraub ; Angelo AntoniniSource :
- Movement disorders : official journal of the Movement Disorder Society [ 1531-8257 ] ; 2015.
Abstract
Previous functional neuroimaging studies in Parkinson's disease (PD) patients with impulse control disorders (ICDs) demonstrated dysfunction of the reward network, although the extent of anatomical changes is unclear. The aim of this study was to measure brain cortical thickness and subcortical volumes, and to assess their relationship with presence and severity of symptoms, in PD patients with and without ICDs. We studied 110 PD patients (N=58 with ICDs) and 33 healthy controls (all negative for ICDs) who underwent an extensive neurological, neuropsychological, and behavioral assessment as well as structural 1.5 Tesla magnetic resonance imaging (MRI). Between-group differences in brain cortical thickness and subcortical volumes, assessed with the FreeSurfer 5.1 tool, were analyzed. In patients with ICDs, we found significant cortical thinning in fronto-striatal circuitry, specifically in the right superior orbitofrontal, left rostral middle frontal, bilateral caudal middle frontal region, and corpus callosum, as well as volume reduction in the right accumbens and increase in the left amygdala. Finally, we observed a positive association relationship between severity of impulsive symptoms and left rostral middle frontal, inferior parietal, and supramarginal areas. These results support the involvement of both reward and response inhibition networks in PD patients with ICDs. Moreover, their severity is associated with alterations in brain regions linked with reward and top-down control networks. Increased understanding of the mechanisms underlying impulsive and compulsive behaviors might help improve therapeutic strategies for these important disorders.
DOI: 10.1002/mds.26154
PubMed: 25649923
Affiliations:
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The aim of this study was to measure brain cortical thickness and subcortical volumes, and to assess their relationship with presence and severity of symptoms, in PD patients with and without ICDs. We studied 110 PD patients (N=58 with ICDs) and 33 healthy controls (all negative for ICDs) who underwent an extensive neurological, neuropsychological, and behavioral assessment as well as structural 1.5 Tesla magnetic resonance imaging (MRI). Between-group differences in brain cortical thickness and subcortical volumes, assessed with the FreeSurfer 5.1 tool, were analyzed. In patients with ICDs, we found significant cortical thinning in fronto-striatal circuitry, specifically in the right superior orbitofrontal, left rostral middle frontal, bilateral caudal middle frontal region, and corpus callosum, as well as volume reduction in the right accumbens and increase in the left amygdala. Finally, we observed a positive association relationship between severity of impulsive symptoms and left rostral middle frontal, inferior parietal, and supramarginal areas. These results support the involvement of both reward and response inhibition networks in PD patients with ICDs. Moreover, their severity is associated with alterations in brain regions linked with reward and top-down control networks. Increased understanding of the mechanisms underlying impulsive and compulsive behaviors might help improve therapeutic strategies for these important disorders.</div></front></TEI><affiliations><list><country><li>Italie</li></country></list><tree><noCountry><name sortKey="Antonini, Angelo" sort="Antonini, Angelo" uniqKey="Antonini A" first="Angelo" last="Antonini">Angelo Antonini</name><name sortKey="Facchini, Silvia" sort="Facchini, Silvia" uniqKey="Facchini S" first="Silvia" last="Facchini">Silvia Facchini</name><name sortKey="Formento Dojot, Patrizia" sort="Formento Dojot, Patrizia" uniqKey="Formento Dojot P" first="Patrizia" last="Formento-Dojot">Patrizia Formento-Dojot</name><name sortKey="Pilleri, Manuela" sort="Pilleri, Manuela" uniqKey="Pilleri M" first="Manuela" last="Pilleri">Manuela Pilleri</name><name sortKey="Vallelunga, Annamaria" sort="Vallelunga, Annamaria" uniqKey="Vallelunga A" first="Annamaria" last="Vallelunga">Annamaria Vallelunga</name><name sortKey="Weintraub, Daniel" sort="Weintraub, Daniel" uniqKey="Weintraub D" first="Daniel" last="Weintraub">Daniel Weintraub</name><name sortKey="Weis, Luca" sort="Weis, Luca" uniqKey="Weis L" first="Luca" last="Weis">Luca Weis</name></noCountry><country name="Italie"><noRegion><name sortKey="Biundo, Roberta" sort="Biundo, Roberta" uniqKey="Biundo R" first="Roberta" last="Biundo">Roberta Biundo</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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