Adjuvant treatment of parkinson's disease with dopamine agonists: Open trial with bromocriptine and CU 32-085
- 1 May 1982
- journal article
- research article
- Published by Springer Nature in Zeitschrift fĂŒr Neurologie
- Vol. 227  (2) , 75-88
- https://doi.org/10.1007/bf00313773
Abstract
Bromocriptine (CB-154) and the 8-α-ergoline CU 32-085, two dopamine receptor agonists, were administered at different times to two series of 22 patients with Parkinson's disease, most of whom took levodopa (plus benserazide) at optimum dosage. The addition of bromocriptine (mean daily dose 32 mg; after 6 months 40 mg) led to a 38.5% reduction of levodopa, while CU 32-085 (mean daily dose 15.2 mg; after 6 months 17.5 mg) permitted a 33.7% reduction in levodopa. The mean dose in two patients on CU 32-085 monotherapy was 55 mg/day. A total of 15 patients tolerated adequate doses of bromocriptine (5â75 mg/day, mean duration of treatment 7.5 months) and 15 patients long-term treatment up to 14 months with CU 32-085 (dose range 1â60 mg/day; mean duration 8.8 months). Both groups showed a significant improvement of âtotal disability scoreâ at 6 months by 56% and 67%, respectively, and after 6 months by 69% and 69.4%, respectively, with a significant decrease of all types of disability. All patients with fluctuations and âon-offâ effects rapidly improved on both compounds. Bromocriptine and CU 32-085 were discontinued in seven patients each (32%) because of adverse effects including mental changes (four with bromocriptine, two with CU 32-085), nausea and vomiting (one and two, respectively), hypotension (one each) and increased tremor plus vomiting (one with CU 32-085). Although adverse effects were similar to those observed with levodopa, CU 32-085 in general showed less severe dyskinesia and mental changes but more frequent nausea than bromocriptine and levodopa. While the results of treatment with bromocriptine and CU 32-085 were comparable, the antitremor effect of the latter drug developed more rapidly, even at low dosage. Both compounds were useful in the management of patients with advanced Parkinson's disease, CU 32-085 having a stronger effect on tremor, bradykinesia, fluctuations and âon-offâ effects than bromocriptine. Bromocriptin (CB-154) und 8-α-Ergolin (CU 32-085), zwei Dopamin-Rezeptoragonisten, wurden zu verschiedenen Zeitpunkten zwei Gruppen von je 22 Patienten mit M. Parkinson verabreicht, von denen die meisten unter optimal dosierter l-Dopa (mit Benserazid)-Behandlung standen. Die Zugabe von Bromocriptin (mittlere Tagesdosis 32 mg; nach 6 Monaten 40 mg) fĂŒhrte zu einer l-Dopa-Dosisreduktion um 38,5%, wĂ€hrend CU 32-085 (mittlere Tagesdosis 15,2 mg; nach 6 Monaten 17,5 mg) eine 33,7%-Dosisreduzierung von l-Dopa gestattete. Die mittlere Tagesdosis bei zwei Patienten mit CU 32-085-Monotherapie betrug 55 mg/Tag. Je 15 Patienten tolerierten adĂ€quate Dosen von Bromocriptin (5â75 mg; mittlere Behandlungsdauer 7,5 Monate) und eine Langzeitbehandlung mit CU 32-085 bis zu 14 Monaten (Dosisbreite 1â60 mg; mittlere Behandlungsdauer 8,8 Monate). Beide Gruppen zeigten signifikante Besserung des âtotal disability scoreâ nach 6 Monaten um 56 bzw. 67% und im spĂ€teren Verlauf um 69 bzw. 69,4% mit signifikanter Abnahme sĂ€mtlicher Behinderungen. Alle Patienten mit Fluktuationen und echten âOn-Offâ-Effekten zeigten auf beide Substanzen rasche Besserung. Bromocriptin und CU 32-085 muĂten bei je 7 Patienten (32%) wegen schwerer Nebenwirkungen einschlieĂlich psychischer Symptome (4 mit Bromocriptin und 2 mit CU 32-085), Nausea und Brechreiz (1 bzw. 2 Patienten), Hypotension (je 1 Patient) und Zunahme des Tremors mit Brechreiz (1 Patient unter CU 32-085) abgesetzt werden. Obgleich die Nebenwirkungen Ă€hnlich jenen von Levodopa waren, bot CU 32-085 im allgemeinen weniger schwere Dyskinesien und psychische VerĂ€nderungen, jedoch hĂ€ufiger Nausea als Bromocriptin und l-Dopa. WĂ€hrend die Behandlungsresultate von Bromocriptin und CU 32-085 grundsĂ€tzlich vergleichbar sind, zeigt die letztere Substanz einen rascher einsetzenden Antitremor-Effekt auch bei niedriger Dosierung. Beide Substanzen sind in der Behandlung von Patienten mit fortgeschrittenem Parkinson-Syndrom gĂŒnstig, wobei CU 32-085 eine stĂ€rkeren Effekt auf Tremor, Bradykinese, Fluktuationen und âOn-Offâ-Effekte als Bromocriptin aufweist.Keywords
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