La maladie de Parkinson en France (serveur d'exploration)

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Targeting β-arrestin2 in the treatment of l-DOPA–induced dyskinesia in Parkinson’s disease

Identifieur interne : 001694 ( Ncbi/Curation ); précédent : 001693; suivant : 001695

Targeting β-arrestin2 in the treatment of l-DOPA–induced dyskinesia in Parkinson’s disease

Auteurs : Nikhil M. Urs ; Simone Bido [France] ; Sean M. Peterson ; Tanya L. Daigle ; Caroline E. Bass ; Raul R. Gainetdinov [Russie] ; Erwan Bezard [France] ; Marc G. Caron

Source :

RBID : PMC:4434696

English descriptors

Abstract

Significance

β-Arrestins are unique proteins that have multiple cellular functions such as G protein-coupled receptor signal desensitization, protein trafficking and signaling molecule scaffolding. Treatment of Parkinson’s disease (PD) motor symptoms by l-3,4-dihydroxyphenylalanine (l-DOPA) has been hampered by abnormal involuntary movements or dyskinetic side effects. The cause of these dyskinesias has been attributed to receptor supersensitivity and uncontrolled neuronal excitability. Here we demonstrate in multiple preclinical models of l-DOPA–induced dyskinesias and PD that expression levels of β-arrestin2 can alter manifestation of these dyskinesias by reducing receptor supersensitivity while maintaining the therapeutic effect of l-DOPA. Thus novel drugs that increase β-arrestin–dependent function at dopamine receptors may be useful in ameliorating PD motor symptoms without inducing dyskinesias.


Url:
DOI: 10.1073/pnas.1502740112
PubMed: 25918399
PubMed Central: 4434696

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PMC:4434696

Le document en format XML

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<title>Significance</title>
<p>β-Arrestins are unique proteins that have multiple cellular functions such as G protein-coupled receptor signal desensitization, protein trafficking and signaling molecule scaffolding. Treatment of Parkinson’s disease (PD) motor symptoms by
<sc>l</sc>
-3,4-dihydroxyphenylalanine (
<sc>l</sc>
-DOPA) has been hampered by abnormal involuntary movements or dyskinetic side effects. The cause of these dyskinesias has been attributed to receptor supersensitivity and uncontrolled neuronal excitability. Here we demonstrate in multiple preclinical models of
<sc>l</sc>
-DOPA–induced dyskinesias and PD that expression levels of β-arrestin2 can alter manifestation of these dyskinesias by reducing receptor supersensitivity while maintaining the therapeutic effect of
<sc>l</sc>
-DOPA. Thus novel drugs that increase β-arrestin–dependent function at dopamine receptors may be useful in ameliorating PD motor symptoms without inducing dyskinesias.</p>
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