ABSTRACT:The safety and efficacy of Sinemet® CR, a controlled-release formulation of carbidopa/levodopa, were investigated in a three year, open-label trial involving 18 parkinsonian patients with fluctuating motor response. The average daily levodopa dosing frequency did not change significantly during long-term treatment. Efficacy measures generally revealed a gradual progression of parkinsonian disability. Patient diaries of motor fluctuations revealed relative stability of time "on" but with a tendency toward increased time "on with dyskinesias" over the 36 month followup period. There were no adverse laboratory results deemed to be related to Sinemet® CR and no unexpected side effects were observed. RESUME: Evaluation du Sinemet® CR a long terme chez les patients parkinsoniens qui ont des fluctuations motrices La securite et l'efficacite du Sinemet® CR, une formule a liberation controlee de carbidopa/levodopa, ont ete investiguees par une etude ouverte de trois ans impliquant 18 parkinsoniens ayant des fluctuations de la reponse motrice. La frequence moyenne quotidienne de la prise de levodopa n'a pas change significativement pendant le traitement a long terme. Les mesures d'efficacite ont generalement revele une progression graduelle de l'invalidite parkinsonienne. Le journal des fluctuations motrices tenu par chaque patient a montre une stabilite relative de la duree des periodes "on", avec une tendance vers un allongement des periodes "on" acconpagnees de dyskinesies sur un suivi de 36 mois. Aucune alteration des r6sultats de laboratoire n'a ete jugee comme etant reliee a la prise de Sinemet® CR et aucun effet secondaire inattendu n'a et6 observe.
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