Preserved serotonin transporter binding in de novo Parkinson's disease: negative correlation with the dopamine transporter.

Journal of Neurology
Karl StreckerOsama Sabri

Abstract

Recent imaging and neuropathological studies indicate reduced serotonin transporter (SERT) in advanced Parkinson's disease (PD). However, data on SERT in early PD patients are sparse. Following the hypothesis that the serotonergic system is damaged early in PD, the aim of our study was to investigate SERT availability by means of PET imaging. Since the loss of dopaminergic neurons is the pathologic hallmark of PD and SERT might be associated with psychiatric co-morbidity, we further sought to correlate SERT availability with the availability of dopamine transporter (DAT) and depressive or motor symptoms in early PD. We prospectively recruited nine early PD patients (4 female, 5 male; 42-76 years) and nine age matched healthy volunteers (5 female, 4 male; 42-72 years). Diagnosis of PD was confirmed by the UK brain bank criteria and DAT imaging. SERT availability was measured by means of [11C]DASB PET. For neuropsychiatric assessment done on the day of PET we applied UPDRS parts I, II and III, Beck's Depression Inventory, Hamilton Rating Scale for Depression, Mini-Mental State Examination and Demtect. SERT was not reduced in any of 14 investigated regions of interest in the nine PD patients compared to healthy controls (p>0.13). ...Continue Reading

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Oct 9, 2012·Brain : a Journal of Neurology·Christoph ScherflerWerner Poewe
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