Central and peripheral dopamine transporter reduction in Parkinson's disease.

Abstract:

OBJECTIVE:Previous reports showed the reduction of dopamine transporter immunoreactivity in peripheral blood lymphocytes in Parkinson's disease. In this work, we sought to investigate the possible correlation between central and peripheral dopamine transporter immunoreactivity values in a group of 11 drug-naive patients with Parkinson's disease. METHODS:Densitometric measurements of dopamine transporter immunoreactivity in peripheral blood lymphocytes was accomplished as described recently, using a monoclonal antidopamine transporter antibody. Dopamine transporter binding in the caudate and putamen nuclei was measured by means of (123)I-fluopane single-photon emission computed tomography in the same patients. RESULTS:The results failed to show any significant correlation between dopamine transporter immunoreactivity in peripheral blood lymphocytes and the caudate or putamen dopamine transporter binding. Moreover, dopamine transporter immunoreactivity in peripheral blood lymphocytes was reduced also in the single patient with normal striatal dopamine transporter binding. DISCUSSION:These results indicate the lack of correlation between central and peripheral dopamine transporter reduction in Parkinson's disease, using the methodologies applied herein. They therefore suggest that the two phenomena are unlikely to share a common pathogenetic mechanism.

journal_name

Neurol Res

journal_title

Neurological research

authors

Buttarelli FR,Capriotti G,Pellicano C,Prosperi D,Circella A,Festa A,Giovannelli M,Tofani A,Pontieri FE,Scopinaro F

doi

10.1179/174313209X383259

subject

Has Abstract

pub_date

2009-09-01 00:00:00

pages

687-91

issue

7

eissn

0161-6412

issn

1743-1328

pii

ner1726

journal_volume

31

pub_type

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