Article: article from journal or magazin.
Differing patterns of striatal 18F-dopa uptake in Parkinson's disease, multiple system atrophy, and progressive supranuclear palsy.
Annals of Neurology
Publication types: Comparative Study ; Journal ArticlePublication Status: ppublish
Using positron emission tomography (PET), we studied regional striatal 18F-dopa uptake in 16 patients with L-dopa-responsive Parkinson's disease (PD), 18 patients with multiple system atrophy, and 10 patients with progressive supranuclear palsy. Results were compared with those of 30 age-matched normal volunteers. The patients with PD showed significantly reduced mean uptake of 18F-dopa in the caudate and putamen compared to controls, but while function in the posterior part of the putamen was severely impaired (45% of normal), function in the anterior part of the putamen and in the caudate was relatively spared (62% and 84% of normal). Mean 18F-dopa uptake in the posterior putamen was depressed to similar levels in all patients. Unlike patients with PD, the patients with progressive supranuclear palsy showed equally severe impairment of mean 18F-dopa uptake in the anterior and posterior putamen. Caudate 18F-dopa uptake was also significantly lower in patients with progressive supranuclear palsy than in patients with PD, being depressed to the same level as that in the putamen. Mean 18F-dopa uptake values in the anterior putamen and caudate in patients with multiple system atrophy lay between PD and progressive supranuclear palsy levels. Locomotor disability of individual patients with PD or multiple system atrophy correlated with decline in striatal 18F-dopa uptake, but this was not the case for the patients with progressive supranuclear palsy. We conclude that patients with PD have selective nigral pathological features with relative preservation of the dopaminergic function in the anterior putamen and caudate, whereas there is progressively more extensive nigral involvement in multiple system atrophy and progressive supranuclear palsy.(ABSTRACT TRUNCATED AT 250 WORDS)
Adult, Aged, Caudate Nucleus/metabolism, Caudate Nucleus/radionuclide imaging, Corpus Striatum/metabolism, Corpus Striatum/radionuclide imaging, Dihydroxyphenylalanine/diagnostic use, Dihydroxyphenylalanine/pharmacokinetics, Female, Fluorine Radioisotopes/diagnostic use, Humans, Male, Middle Aged, Parkinson Disease/metabolism, Parkinson Disease/radionuclide imaging, Putamen/metabolism, Putamen/radionuclide imaging, Supranuclear Palsy, Progressive/metabolism, Supranuclear Palsy, Progressive/radionuclide imaging, Tomography, Emission-Computed
Web of science
Last modification date