Imaging movement-related activity in medicated Parkin-associated and sporadic Parkinson's disease

Thilo van Eimeren*, Ferdinand Binkofski, Carsten Buhmann, Johann Hagenah, Antonio P. Strafella, Peter P. Pramstaller, Hartwig R. Siebner, Christine Klein

*Korrespondierende/r Autor/-in für diese Arbeit
7 Zitate (Scopus)

Abstract

Treatment-related motor complications such as dyskinesias are a major problem in the long-term management of Parkinson's disease (PD). In sporadic PD, a relatively early onset of the disease is known to be associated with an early development of dyskinesias. Although linked with early onset, patients with Parkin-associated PD often show a stable long-term response to dopaminergic therapy without developing treatment-induced motor complications. Therefore, we reasoned that this difference in vulnerability to develop dyskinesias under long-term dopaminergic therapy may be associated with differences in movement-related activation patterns in Parkin-associated compared to sporadic PD. To test this hypothesis, medicated non-dyskinetic patients with either Parkin-associated or sporadic PD underwent functional magnetic resonance imaging (fMRI) while performing externally specified or internally selected movements. Patients with Parkin-associated and sporadic PD showed no difference in movement-related activation patterns. Moreover, the covariates 'age' and 'disease duration' similarly influenced brain activation in both patient groups. The present finding suggests that a stable long-term motor response in some patients with Parkin-associated PD may not be related to differences in cortical recruitment. In conclusion, our findings corroborate a substantial pathophysiologic overlap between Parkin-associated and sporadic PD and lend further support to the notion that Parkin-associated PD is a suitable genetic model for sporadic PD.

OriginalspracheEnglisch
ZeitschriftParkinsonism and Related Disorders
Jahrgang16
Ausgabenummer6
Seiten (von - bis)384-387
Seitenumfang4
ISSN1353-8020
DOIs
PublikationsstatusVeröffentlicht - 01.07.2010

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