Abstract:
:Pathological gambling (PG) represents a behavioral side effect of dopamine replacement therapy in a minority of patients with Parkinson's disease (PD). Using striatal dopamine transporter (DAT) with single photon emission tomography we assessed presynaptic dopaminergic function in 8 PD patients with PG, 21 matched PD control subjects, and 14 healthy subjects. Statistical Parametric Mapping was applied for image analysis. The analysis of variance (ANOVA) revealed that the three groups differed in dorsal and ventral striata bilaterally. The post-hoc analysis displayed a reduced tracer binding in the ventral striatum of PD patients with PG compared to PD controls, possibly reflecting either a reduction of mesolimbic projections or, alternatively, a lower membrane DAT expression on presynaptic terminals. The latter hypothesis is most likely given that the functional reduction of presynaptic reuptake would be more consistent with the increased dopamine levels in the ventral striatum recently reported in PD gamblers.
journal_name
Neurobiol Disjournal_title
Neurobiology of diseaseauthors
Cilia R,Ko JH,Cho SS,van Eimeren T,Marotta G,Pellecchia G,Pezzoli G,Antonini A,Strafella APdoi
10.1016/j.nbd.2010.03.013subject
Has Abstractpub_date
2010-07-01 00:00:00pages
98-104issue
1eissn
0969-9961issn
1095-953Xpii
S0969-9961(10)00074-4journal_volume
39pub_type
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