Abstract：
OBJECTIVE:GM1 ganglioside has been suggested as a treatment for Parkinson's disease (PD), potentially having symptomatic and disease modifying effects. The current pilot imaging study was performed to examine effects of GM1 on dopamine transporter binding, as a surrogate measure of disease progression, studied longitudinally. METHODS:Positron emission tomography (PET) imaging data were obtained from a subset of subjects enrolled in a delayed start clinical trial of GM1 in PD [1]: 15 Early-start (ES) subjects, 14 Delayed-start (DS) subjects, and 11 Comparison (standard-of-care) subjects. Treatment subjects were studied over a 2.5 year period while Comparison subjects were studied over 2 years. Dynamic PET scans were performed over 90 min following injection of [(11)C]methylphenidate. Regional values of binding potential (BPND) were analyzed for several striatal volumes of interest. RESULTS:Clinical results for this subset of subjects were similar to those previously reported for the larger study group. ES subjects showed early symptomatic improvement and slow symptom progression over the study period. DS and Comparison subjects were initially on the same symptom progression trajectory but diverged once DS subjects received GM1 treatment. Imaging results showed significant slowing of BPND loss in several striatal regions in GM1-treated subjects and in some cases, an increased BPND in some striatal regions was detected after GM1 use. INTERPRETATION:Results of this pilot imaging study provide additional data to suggest a potential disease modifying effect of GM1 on PD. These results need to be confirmed in a larger number of subjects.
journal_name
J Neurol Scijournal_title
Journal of the neurological sciencesauthors
Schneider JS,Cambi F,Gollomp SM,Kuwabara H,Brašić JR,Leiby B,Sendek S,Wong DFdoi
10.1016/j.jns.2015.06.028subject
Has Abstractpub_date
2015-09-15 00:00:00pages
118-23issue
1-2eissn
0022-510Xissn
1878-5883pii
S0022-510X(15)00369-Xjournal_volume
356pub_type
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