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Thirty patients with Parkinson's disease were treated for four weeks with levodopa combined with an inhibitor of extracerebral dopa decarboxylase, L-alpha-methyldopahydrazine (MK 486). The therapeutic results were compared with the effects of treatment of a group of 40 patients with levodopa alone.
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A double-blind study comparing the effects of carbidopa and levodopa combined in a single tablet with levodopa alone was undertaken in 50 patients with Parkinson's disease. After 6 months, there was a statistically significant improvement over baseline in total score, rigidity, and tremor only in
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Irregularities in motor response after continuing levodopa therapy of Parkinson disease (the "on-off effect") were assessed with the addition of L-alpha-methyldopa hydrazine (carbidopa) in a double-blind study. Thirteen of 20 patients improved while receiving carbidopa and levodopa while only four
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Forty patients with severe Parkinson's disease (23 men, 17 women) who had been treated for six years with L-dopa-decarboxylase inhibitor, were part of a placebo-controlled double-blind trial to test the effectiveness of bromocriptin. In all patients the effectiveness of L-dopa had been decreasing,
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OBJECTIVE
To introduce entacapone, a new catechol-O-methyltransferase inhibitor, and discuss its pharmacology, pharmacodynamics, pharmacokinetics, clinical efficacy, drug interactions, adverse events, dosage guidelines, and therapeutic and formulary considerations.
METHODS
A MEDLINE database search
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Pramipexole (SND 919), a potent non-ergot dopamine agonist, or placebo, was administered to 69 patients with advanced Parkinson's disease (33 received placebo, 36 received pramipexole) in a double-blind, randomized, multi-center study in which individually optimized doses of L-dopa plus a dopa
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The efficiency of L-dopa alone and L-dopa plus a dopa-decarboxylase inhibitor (carbidopa) in provoking growth hormome (GH) secretion was studied 40 children with short stature. By preventing the extracerebral metabolism, carbidopa increases the availability of L-dopa to the brain. The study was
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Levodopa is the most efficacious agent for the treatment of motor features of Parkinson's disease but its chronic use is associated with the development of motor complications. Mounting evidence indicates the short half-life of levodopa and resultant pulsatile stimulation of striatal dopamine
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The long-term safety and efficacy of the catechol-O-methyltransferase (COMT) inhibitor entacapone was investigated in a 3-year open-label extension of the 6-month double-blind placebo-controlled Nordic (NOMECOMT) study. After a wash-out following this study, 132 patients with Parkinson's disease
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Tolcapone is a potent, reversible catechol-O-methyltransferase (COMT) inhibitor with both peripheral and central activity. It has been demonstrated to improve motor function and allow levodopa dose reductions in Parkinson's disease (PD) patients who are experiencing either a stable response or motor
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The authors report their experience, over a 26-month period, in the management of 60 parkinsonian patients with the combination of levodopa and an inhibitor of peripheral dopa-decarboxylase, Ro 4-4602. This approach to Parkinson's disease is useful, safe, and at least as effective as levodopa alone.
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Levodopa has been the gold standard therapy for the motor symptoms of Parkinson's disease for more than three decades. Although it remains the most effective treatment, its long-term use is associated with motor fluctuations and dyskinesias that can be disabling for patients and difficult for
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After 40 years of clinical experience, levodopa remains the gold standard treatment for Parkinson's disease (PD) despite the recent emergence of a host of new therapies. Some physicians are cautious when prescribing levodopa because of its association with motor complications. Evidence now suggests
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Sinemet (a combination of levodopa with carbidopa, a dopa-decarboxylase inhibitor) has replaced levodopa for early treatment of parkinsonism. The blocking of the systemic uptake of dopamine has eliminated the previous complications of nausea, vomiting, and cardiac and respiratory arrhythmias;
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OBJECTIVE
The purpose of this study was to determine whether carbidopa (Lodosyn), an inhibitor of dopa-decarboxylase that blocks the synthesis of dopamine outside the brain, is an effective antiemetic in patients with familial dysautonomia (FD) and hyperdopaminergic nausea/retching/vomiting
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