La maladie de Parkinson au Canada (serveur d'exploration)

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Increased striatal dopamine release in Parkinsonian patients with pathological gambling: a [11C] raclopride PET study

Identifieur interne : 000B16 ( Pmc/Checkpoint ); précédent : 000B15; suivant : 000B17

Increased striatal dopamine release in Parkinsonian patients with pathological gambling: a [11C] raclopride PET study

Auteurs : T. D. L. Steeves [Canada] ; J. Miyasaki [Canada] ; M. Zurowski [Canada] ; A. E. Lang [Canada] ; G. Pellecchia [Canada] ; T. Van Eimeren [Canada] ; P. Rusjan [Canada] ; S. Houle [Canada] ; A. P. Strafella [Canada]

Source :

RBID : PMC:3479148

Abstract

Pathological gambling is an impulse control disorder reported in association with dopamine agonists used to treat Parkinson’s disease. Although impulse control disorders are conceptualized as lying within the spectrum of addictions, little neurobiological evidence exists to support this belief. Functional imaging studies have consistently demonstrated abnormalities of dopaminergic function in patients with drug addictions, but to date no study has specifically evaluated dopaminergic function in Parkinson’s disease patients with impulse control disorders. We describe results of a [11C] raclopride positron emission tomography (PET) study comparing dopaminergic function during gambling in Parkinson’s disease patients, with and without pathological gambling, following dopamine agonists. Patients with pathological gambling demonstrated greater decreases in binding potential in the ventral striatum during gambling (13.9%) than control patients (8.1%), likely reflecting greater dopaminergic release. Ventral striatal bindings at baseline during control task were also lower in patients with pathological gambling. Although prior imaging studies suggest that abnormality in dopaminergic binding and dopamine release may be markers of vulnerability to addiction, this study presents the first evidence of these phenomena in pathological gambling. The emergence of pathological gambling in a number of Parkinson’s disease patients may provide a model into the pathophysiology of this disorder.


Url:
DOI: 10.1093/brain/awp054
PubMed: 19346328
PubMed Central: 3479148


Affiliations:


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PMC:3479148

Le document en format XML

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<p id="P1">Pathological gambling is an impulse control disorder reported in association with dopamine agonists used to treat Parkinson’s disease. Although impulse control disorders are conceptualized as lying within the spectrum of addictions, little neurobiological evidence exists to support this belief. Functional imaging studies have consistently demonstrated abnormalities of dopaminergic function in patients with drug addictions, but to date no study has specifically evaluated dopaminergic function in Parkinson’s disease patients with impulse control disorders. We describe results of a [
<sup>11</sup>
C] raclopride positron emission tomography (PET) study comparing dopaminergic function during gambling in Parkinson’s disease patients, with and without pathological gambling, following dopamine agonists. Patients with pathological gambling demonstrated greater decreases in binding potential in the ventral striatum during gambling (13.9%) than control patients (8.1%), likely reflecting greater dopaminergic release. Ventral striatal bindings at baseline during control task were also lower in patients with pathological gambling. Although prior imaging studies suggest that abnormality in dopaminergic binding and dopamine release may be markers of vulnerability to addiction, this study presents the first evidence of these phenomena in pathological gambling. The emergence of pathological gambling in a number of Parkinson’s disease patients may provide a model into the pathophysiology of this disorder.</p>
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PET Imaging Centre, Centre for Addiction and Mental Health, Ontario, Canada</aff>
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<corresp id="FN1">Correspondence to: Antonio P. Strafella, MD, PhD, FRCPC, Toronto Western Hospital/Institute & CAMH-PET Imaging Centre, University of Toronto, Toronto, ON, Canada,
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<p id="P1">Pathological gambling is an impulse control disorder reported in association with dopamine agonists used to treat Parkinson’s disease. Although impulse control disorders are conceptualized as lying within the spectrum of addictions, little neurobiological evidence exists to support this belief. Functional imaging studies have consistently demonstrated abnormalities of dopaminergic function in patients with drug addictions, but to date no study has specifically evaluated dopaminergic function in Parkinson’s disease patients with impulse control disorders. We describe results of a [
<sup>11</sup>
C] raclopride positron emission tomography (PET) study comparing dopaminergic function during gambling in Parkinson’s disease patients, with and without pathological gambling, following dopamine agonists. Patients with pathological gambling demonstrated greater decreases in binding potential in the ventral striatum during gambling (13.9%) than control patients (8.1%), likely reflecting greater dopaminergic release. Ventral striatal bindings at baseline during control task were also lower in patients with pathological gambling. Although prior imaging studies suggest that abnormality in dopaminergic binding and dopamine release may be markers of vulnerability to addiction, this study presents the first evidence of these phenomena in pathological gambling. The emergence of pathological gambling in a number of Parkinson’s disease patients may provide a model into the pathophysiology of this disorder.</p>
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<name sortKey="Rusjan, P" sort="Rusjan, P" uniqKey="Rusjan P" first="P." last="Rusjan">P. Rusjan</name>
<name sortKey="Steeves, T D L" sort="Steeves, T D L" uniqKey="Steeves T" first="T. D. L." last="Steeves">T. D. L. Steeves</name>
<name sortKey="Strafella, A P" sort="Strafella, A P" uniqKey="Strafella A" first="A. P." last="Strafella">A. P. Strafella</name>
<name sortKey="Strafella, A P" sort="Strafella, A P" uniqKey="Strafella A" first="A. P." last="Strafella">A. P. Strafella</name>
<name sortKey="Strafella, A P" sort="Strafella, A P" uniqKey="Strafella A" first="A. P." last="Strafella">A. P. Strafella</name>
<name sortKey="Van Eimeren, T" sort="Van Eimeren, T" uniqKey="Van Eimeren T" first="T." last="Van Eimeren">T. Van Eimeren</name>
<name sortKey="Zurowski, M" sort="Zurowski, M" uniqKey="Zurowski M" first="M." last="Zurowski">M. Zurowski</name>
</country>
</tree>
</affiliations>
</record>

Pour manipuler ce document sous Unix (Dilib)

EXPLOR_STEP=$WICRI_ROOT/Wicri/Canada/explor/ParkinsonCanadaV1/Data/Pmc/Checkpoint
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000B16 | SxmlIndent | more

Ou

HfdSelect -h $EXPLOR_AREA/Data/Pmc/Checkpoint/biblio.hfd -nk 000B16 | SxmlIndent | more

Pour mettre un lien sur cette page dans le réseau Wicri

{{Explor lien
   |wiki=    Wicri/Canada
   |area=    ParkinsonCanadaV1
   |flux=    Pmc
   |étape=   Checkpoint
   |type=    RBID
   |clé=     PMC:3479148
   |texte=   Increased striatal dopamine release in Parkinsonian patients with pathological gambling: a [11C] raclopride PET study
}}

Pour générer des pages wiki

HfdIndexSelect -h $EXPLOR_AREA/Data/Pmc/Checkpoint/RBID.i   -Sk "pubmed:19346328" \
       | HfdSelect -Kh $EXPLOR_AREA/Data/Pmc/Checkpoint/biblio.hfd   \
       | NlmPubMed2Wicri -a ParkinsonCanadaV1 

Wicri

This area was generated with Dilib version V0.6.29.
Data generation: Thu May 4 22:20:19 2017. Site generation: Fri Dec 23 23:17:26 2022