Zusammenfassung
Hintergrund: L-Dopa ist nach wie vor die wirksamste Substanz in der Behandlung des M. Parkinson.
Jedoch begünstigt seine kurze Halbwertszeit mit Fortschreiten der Erkrankung das Auftreten
von Beweglichkeitsschwankungen. Durch die gleichzeitige Gabe von L-Dopa, dem Dopa-Decarboxylase-Hemmer
Carbidopa und dem Catechol-O-Methyltransferase-Hemmer Entacapon in Stalevo® können
die Halbwertszeit von L-Dopa verlängert, eine kontinuierlichere dopaminerge Stimulation
(CDS) erreicht sowie Wearing-off und Dyskinesien reduziert werden. Methodik: In der multizentrischen prospektiven offenen Studie zur Wirksamkeit und Verträglichkeit
von Stalevo® wurden 840 Parkinson-Patienten mit Wearing-off-Symptomen in 293 Zentren
untersucht. Die Auswahl der Patienten sowie die Dosierung der Studienmedikation erfolgte
durch die teilnehmenden Ärzte. Es war ein Beobachtungszeitraum von 5 Wochen vorgesehen.
Primärer Zielparameter der Studie war eine Verbesserung der Wearing-off-Symptomatik
durch Stalevo®. Außerdem wurden Off-Zeiten, Dyskinesien, Veränderungen der begleitenden
Parkinson-Medikation sowie Sicherheit und Verträglichkeit untersucht. Ergebnisse: Es konnte durch Umstellung auf Stalevo® eine signifikante Reduktion des Ausprägungsgrades
aller Wearing-off-Symptome um durchschnittlich 46 % erzielt werden. Die tägliche Off-Zeit
sank von durchschnittlich 115 auf 57 Minuten. Die Anzahl der Patienten mit Dyskinesien
reduzierte sich im Behandlungsverlauf von 35 auf 24 %. Die tägliche Gesamtdosis an
L-Dopa wurde im Durchschnitt um 53 mg reduziert. Bei 16 % der Patienten konnte ein
Dopaminagonist vollständig abgesetzt bzw. die Dosis reduziert werden. Bei 31 % der
Patienten wurden sonstige Parkinson-Medikamente vollständig abgesetzt bzw. die Dosis
reduziert. Es traten bei 2,5 % der Patienten unerwünschte Arzneimittelwirkungen auf.
Die Verträglichkeit der Therapie wurde für 85 % der Patienten als „sehr gut” oder
„gut” bewertet. Schlussfolgerung: Diese prospektive offene Studie zur Anwendung von Stalevo® bei Parkinson-Patienten
mit Wearing-off-Symptomen bestätigt erneut die gute Wirksamkeit und gute Verträglichkeit
an einem großen Patientenkollektiv.
Abstract
Background: Levodopa is still the most effective treatment for Parkinson's disease. However,
its short half-life encourages the development of fluctuations in motor response during
the course of the disease. The new preparation Stalevo® which combines levodopa, the
dopa decarboxylase inhibitor carbidopa and the catechol-O -methyltransferase inhibitor entacapone in one tablet provides a longer levodopa half-life
and more stable concentrations of plasma levodopa. A more continuous dopaminergic
stimulation (CDS) can be achieved and motor complications such as wearing-off and
dyskinesias are reduced. Methods: 840 Parkinson's disease patients experiencing wearing-off were enrolled in this prospective
open-label multicentre trial to study efficacy and tolerability of Stalevo®. Selection
of patients as well as the dosage of each patient's study medication were carried
out by the participating physicians. Duration of study was planned to be 5 weeks.
Primary end point of the study was the improvement of wearing-off symptoms by Stalevo®.
Off-time, occurrence of dyskinesias, change in other antiparkinsonian medication as
well as safety and tolerability were studied, too. Results: After switching to Stalevo® the severity of wearing-off symptoms was significantly
reduced by an average of 46 %. Mean daily off-time decreased from 115 min to 57 min.
The number of patients experiencing dyskinesias was reduced from 35 % to 24 % at the
end of the study. Total daily dose of levodopa decreased by 53 mg on average. In 16
% of patients the treatment with a dopamine agonist was stopped or the dose was reduced.
In 31 % of patients the other antiparkinsonian medication was not required any longer
or the dose was reduced. Adverse events occurred in 2.5 % of patients. Tolerability
of therapy was rated as „very good” or „good” in 85 % of patients. Conclusion: This prospective open-label trial in 840 patients with Parkinson's disease experiencing
wearing-off confirms the good efficacy and good tolerability of Stalevo® once again.
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Prof. Dr. med. Wolfgang Jost
Deutsche Klinik für Diagnostik · Fachbereich Neurologie
Aukammallee 33
65191 Wiesbaden
Email: jost.neuro@dkd-wiesbaden.de