Movement Disorders (revue)

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Prefrontal Alterations in Parkinson's Disease with Levodopa-Induced Dyskinesia During fMRI Motor Task

Identifieur interne : 001022 ( Main/Exploration ); précédent : 001021; suivant : 001023

Prefrontal Alterations in Parkinson's Disease with Levodopa-Induced Dyskinesia During fMRI Motor Task

Auteurs : Antonio Cerasa [Italie] ; Pierfrancesco Pugliese [Italie] ; Demetrio Messina [Italie] ; Maurizio Morelli [Italie] ; Maria Cecilia Gioia [Italie] ; Maria Salsone [Italie] ; Fabiana Novellino [Italie] ; Giuseppe Nicoletti [Italie] ; Gennarina Arabia [Italie] ; Aldo Quattrone [Italie]

Source :

RBID : Pascal:12-0198668

Descripteurs français

English descriptors

Abstract

Levodopa-induced dyskinesia represents disabling complication of long-term therapy with dopaminergic drugs in treating Parkinson's disease (PD). Recently, our group demonstrated that PD patients with levodopa-induced dyskinesia were characterized by abnormal volumetric changes in the inferior prefrontal gyrus. In this study, the functional relevance of this structural abnormality was explored using functional magnetic resonance imaging. Ten dyskinetic PD patients and 10 nondyskinetic PD patients were studied in the OFF phase with functional magnetic resonance imaging while performing externally and internally triggered visuomotor tasks. Although neither group demonstrated behavioral differences during execution of motor tasks, magnetic resonance imaging analysis detected significant changes in target cortical regions. In particular, PD patients with levodopa-induced dyskinesia showed significant overactivity in the supplementary motor area and underactivity in the right inferior prefrontal gyrus during execution of both tasks when compared with PD patients without levodopa-induced dyskinesia. Moreover, these prefrontal functional alterations were significantly correlated with Abnormal Involuntary Movement Scale scores. This functional magnetic resonance imaging study together with our previous volumetric findings highlights the role of the prefrontal cortex in the neuronal mechanisms of dyskinesia.


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<div type="abstract" xml:lang="en">Levodopa-induced dyskinesia represents disabling complication of long-term therapy with dopaminergic drugs in treating Parkinson's disease (PD). Recently, our group demonstrated that PD patients with levodopa-induced dyskinesia were characterized by abnormal volumetric changes in the inferior prefrontal gyrus. In this study, the functional relevance of this structural abnormality was explored using functional magnetic resonance imaging. Ten dyskinetic PD patients and 10 nondyskinetic PD patients were studied in the OFF phase with functional magnetic resonance imaging while performing externally and internally triggered visuomotor tasks. Although neither group demonstrated behavioral differences during execution of motor tasks, magnetic resonance imaging analysis detected significant changes in target cortical regions. In particular, PD patients with levodopa-induced dyskinesia showed significant overactivity in the supplementary motor area and underactivity in the right inferior prefrontal gyrus during execution of both tasks when compared with PD patients without levodopa-induced dyskinesia. Moreover, these prefrontal functional alterations were significantly correlated with Abnormal Involuntary Movement Scale scores. This functional magnetic resonance imaging study together with our previous volumetric findings highlights the role of the prefrontal cortex in the neuronal mechanisms of dyskinesia.</div>
</front>
</TEI>
<affiliations>
<list>
<country>
<li>Italie</li>
</country>
</list>
<tree>
<country name="Italie">
<noRegion>
<name sortKey="Cerasa, Antonio" sort="Cerasa, Antonio" uniqKey="Cerasa A" first="Antonio" last="Cerasa">Antonio Cerasa</name>
</noRegion>
<name sortKey="Arabia, Gennarina" sort="Arabia, Gennarina" uniqKey="Arabia G" first="Gennarina" last="Arabia">Gennarina Arabia</name>
<name sortKey="Gioia, Maria Cecilia" sort="Gioia, Maria Cecilia" uniqKey="Gioia M" first="Maria Cecilia" last="Gioia">Maria Cecilia Gioia</name>
<name sortKey="Gioia, Maria Cecilia" sort="Gioia, Maria Cecilia" uniqKey="Gioia M" first="Maria Cecilia" last="Gioia">Maria Cecilia Gioia</name>
<name sortKey="Messina, Demetrio" sort="Messina, Demetrio" uniqKey="Messina D" first="Demetrio" last="Messina">Demetrio Messina</name>
<name sortKey="Messina, Demetrio" sort="Messina, Demetrio" uniqKey="Messina D" first="Demetrio" last="Messina">Demetrio Messina</name>
<name sortKey="Morelli, Maurizio" sort="Morelli, Maurizio" uniqKey="Morelli M" first="Maurizio" last="Morelli">Maurizio Morelli</name>
<name sortKey="Nicoletti, Giuseppe" sort="Nicoletti, Giuseppe" uniqKey="Nicoletti G" first="Giuseppe" last="Nicoletti">Giuseppe Nicoletti</name>
<name sortKey="Nicoletti, Giuseppe" sort="Nicoletti, Giuseppe" uniqKey="Nicoletti G" first="Giuseppe" last="Nicoletti">Giuseppe Nicoletti</name>
<name sortKey="Novellino, Fabiana" sort="Novellino, Fabiana" uniqKey="Novellino F" first="Fabiana" last="Novellino">Fabiana Novellino</name>
<name sortKey="Pugliese, Pierfrancesco" sort="Pugliese, Pierfrancesco" uniqKey="Pugliese P" first="Pierfrancesco" last="Pugliese">Pierfrancesco Pugliese</name>
<name sortKey="Quattrone, Aldo" sort="Quattrone, Aldo" uniqKey="Quattrone A" first="Aldo" last="Quattrone">Aldo Quattrone</name>
<name sortKey="Quattrone, Aldo" sort="Quattrone, Aldo" uniqKey="Quattrone A" first="Aldo" last="Quattrone">Aldo Quattrone</name>
<name sortKey="Salsone, Maria" sort="Salsone, Maria" uniqKey="Salsone M" first="Maria" last="Salsone">Maria Salsone</name>
</country>
</tree>
</affiliations>
</record>

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