Parkinson's disease monotherapy with controlled-release MK-458 (PHNO): double-blind study and comparison to carbidopa/levodopa.
|
| Abstract |
The potent and selective dopamine D-2 agonist, MK-458 [PHNO; (+)-4-propyl-9-hydroxynaphthoxazine] was administered as monotherapy to nine patients with Parkinson's disease in a double-blind, placebo-controlled 12-week investigation; ten other patients were randomized to placebo. MK-458 was formulated as a controlled-release preparation, using a hydroxypropyl methylcellulose-lactase (HPMC) matrix. Patients receiving MK-458/HPMC improved on a variety of measures of parkinsonism, compared to their baseline scores; in contrast, only trivial improvement was seen within the placebo group. We subsequently compared the anti-Parkinson response to MK-458/HPMC with the response to chronic carbidopa/levodopa monotherapy in an open label trial. Carbidopa/levodopa improved parkinsonism to a significantly greater degree than MK-458/HPMC. Doses of MK-458 used in these studies (up to 60 mg per day) were substantially higher than those in previously reported preliminary studies of this medication. We conclude that monotherapy with MK-458/HPMC results in a significant anti-Parkinson effect; however, the response falls short of that seen with carbidopa/levodopa.
|
|---|---|
| Authors | J E Ahlskog, M D Muenter, P A Bailey, P M Miller |
| Journal | Clinical neuropharmacology (Clin Neuropharmacol) Vol. 14 Issue 3 Pg. 214-27 (Jun 1991) ISSN: 0362-5664 [Print] United States |
| PMID | 1676932 (Publication Type: Clinical Trial, Comparative Study, Journal Article, Randomized Controlled Trial, Research Support, Non-U.S. Gov't) |
| Chemical References |
|
| Topics |
|
Join CureHunter, for free Research Interface BASIC access!
Realize the full power of the drug-disease research graph!