We performed a double-blind, placebo-controlled, crossover study to assess the effect of amantadine versus placebo on levodopa-induced dyskinesias in Parkinson's disease. We found a 24% reduction in the total dyskinesia score after amantadine administration (p = 0.004). This improvement was achievement without any influence on the severity of "on" period parkinsonism. The results confirm that amantadine reduces levodopa dyskinesias and support the hypothesis that dyskinesias can be reduced by blockade of excitatory pathways in the basal ganglia.
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Univ Buenos Aires, Fac Med, Hosp Clin Jose San Martin, Serv Neurol, Buenos Aires, DF, ArgentinaUniv Buenos Aires, Fac Med, Hosp Clin Jose San Martin, Serv Neurol, Buenos Aires, DF, Argentina
Cersosimo, MG
Scorticati, MC
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Univ Buenos Aires, Fac Med, Hosp Clin Jose San Martin, Serv Neurol, Buenos Aires, DF, ArgentinaUniv Buenos Aires, Fac Med, Hosp Clin Jose San Martin, Serv Neurol, Buenos Aires, DF, Argentina
Scorticati, MC
Micheli, FE
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Univ Buenos Aires, Fac Med, Hosp Clin Jose San Martin, Serv Neurol, Buenos Aires, DF, ArgentinaUniv Buenos Aires, Fac Med, Hosp Clin Jose San Martin, Serv Neurol, Buenos Aires, DF, Argentina