کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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3074898 | 1580956 | 2016 | 5 صفحه PDF | دانلود رایگان |
• A large study showed the relation between Parkinson symptoms and dopamine depletion.
• Dopamine depletion and hypokinetic-rigidity are related in Parkinson patients.
• Tremor was not related to dopamine depletion and relays on a different pathway.
• Freezing of gait correlated with reduced dopamine values in the putamen.
IntroductionIn this retrospective study concerning patients with Parkinson's disease (PD) scanned with 18-F-Dopa PET (N = 129), we looked for an association between reduced 18-F-Dopa uptake and the key PD symptoms tremor and hypokinesia-rigidity. We hypothesized to find a stronger correlation between dopaminergic depletion in the striatum and hypokinesia-rigidity compared to tremor.MethodsThe onset side of symptoms (documented for 102 patients) as well as the first registered UPDRS (available for 79 patients) was used to correlate with F-Dopa uptake values in the caudate nucleus and putamen in this large retrospective sample.ResultsReduced F-Dopa uptake was contralateral to hypokinesia-rigidity symptoms and correlated with its severity (quantified by UPDRS). For tremor severity, no correlation was seen with F-Dopa reduction. Furthermore, freezing of gait correlated with reduced F-Dopa uptake in the putamen of the right hemisphere.Conclusion and discussionOur results, obtained in a large patient group, provides support for the concept that tremor in PD is not only based on a dopamine related pathway but may rely on a different pathway.
Journal: NeuroImage: Clinical - Volume 11, 2016, Pages 68–72