A pilot evaluation of the tolerability, safety, and efficacy of tolcapone alone and in combination with oral selegiline in untreated Parkinson's disease patients
Identifieur interne : 008006 ( Main/Merge ); précédent : 008005; suivant : 008007A pilot evaluation of the tolerability, safety, and efficacy of tolcapone alone and in combination with oral selegiline in untreated Parkinson's disease patients
Auteurs : Robert A. Hauser [États-Unis] ; Eric Molho [États-Unis] ; Heidi Shale [États-Unis] ; Simon Pedder [États-Unis] ; Ernest E. Dorflinger [États-Unis]Source :
- Movement Disorders [ 0885-3185 ] ; 1998-07.
English descriptors
- KwdEn :
- Administration, Oral, Aged, Antiparkinson Agents (administration & dosage), Antiparkinson Agents (adverse effects), Benzophenones (administration & dosage), Benzophenones (adverse effects), COMT inhibitors, Catechol O-Methyltransferase Inhibitors, Dose-Response Relationship, Drug, Double-Blind Method, Drug Therapy, Combination, Early therapy, Female, Humans, Male, Middle Aged, Neurologic Examination (drug effects), Nitrophenols, Parkinson Disease (drug therapy), Parkinson's disease, Pilot Projects, Selegiline, Selegiline (administration & dosage), Selegiline (adverse effects), Tolcapone, Treatment Outcome.
- MESH :
- chemical , administration & dosage : Antiparkinson Agents, Benzophenones, Selegiline.
- chemical , adverse effects : Antiparkinson Agents, Benzophenones, Selegiline.
- drug effects : Neurologic Examination.
- drug therapy : Parkinson Disease.
- Administration, Oral, Aged, Catechol O-Methyltransferase Inhibitors, Dose-Response Relationship, Drug, Double-Blind Method, Drug Therapy, Combination, Female, Humans, Male, Middle Aged, Nitrophenols, Pilot Projects, Treatment Outcome.
Abstract
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 fluctuations while on levodopa/dopa decarboxylase inhibitor therapy. Because striatal dopamine is metabolized by COMT and monoamine oxidase (MAO), central COMT inhibition alone or in combination with MAO inhibition might provide symptomatic benefit for patients not receiving levodopa. We conducted a pilot study to evaluate the tolerability, safety, and efficacy of tolcapone alone and in combination with oral selegiline in early untreated PD patients. Patients were randomized to receive 200 mg tolcapone three times a day or placebo for the 8 weeks of the study. Open‐label oral selegiline (5 mg in the morning and midday) was administered to all patients during the second 4 weeks of the study. There was no difference between treatment groups according to the investigator's assessment of tolerability at week 4. Ninety‐five percent of tolcapone‐treated patients and 98% of placebo‐treated patients experienced excellent or good tolerability during the first 4 weeks (95% confidence interval [CI]: −10.3, 5.7; p = 0.57). A decrease in tolerability occurred in the tolcapone group during the second 4 weeks of the study following the addition of selegiline. The most commonly reported side effects were diarrhea (31% tolcapone, 7% placebo), nausea (21% tolcapone, 2% placebo), urine discoloration (12% tolcapone, 0% placebo), dizziness (12% tolcapone, 5% placebo), headaches (12% tolcapone, 10% placebo), and abdominal pain (10% tolcapone, 5% placebo). We did not identify symptomatic benefit associated with tolcapone alone or in combination with oral selegiline in this group of otherwise untreated PD patients.
Url:
DOI: 10.1002/mds.870130406
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ISTEX:7C6797D8ED1029226FA3A94A33EB01333ECAA69DLe document en format XML
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<front><div type="abstract" xml:lang="en">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 fluctuations while on levodopa/dopa decarboxylase inhibitor therapy. Because striatal dopamine is metabolized by COMT and monoamine oxidase (MAO), central COMT inhibition alone or in combination with MAO inhibition might provide symptomatic benefit for patients not receiving levodopa. We conducted a pilot study to evaluate the tolerability, safety, and efficacy of tolcapone alone and in combination with oral selegiline in early untreated PD patients. Patients were randomized to receive 200 mg tolcapone three times a day or placebo for the 8 weeks of the study. Open‐label oral selegiline (5 mg in the morning and midday) was administered to all patients during the second 4 weeks of the study. There was no difference between treatment groups according to the investigator's assessment of tolerability at week 4. Ninety‐five percent of tolcapone‐treated patients and 98% of placebo‐treated patients experienced excellent or good tolerability during the first 4 weeks (95% confidence interval [CI]: −10.3, 5.7; p = 0.57). A decrease in tolerability occurred in the tolcapone group during the second 4 weeks of the study following the addition of selegiline. The most commonly reported side effects were diarrhea (31% tolcapone, 7% placebo), nausea (21% tolcapone, 2% placebo), urine discoloration (12% tolcapone, 0% placebo), dizziness (12% tolcapone, 5% placebo), headaches (12% tolcapone, 10% placebo), and abdominal pain (10% tolcapone, 5% placebo). We did not identify symptomatic benefit associated with tolcapone alone or in combination with oral selegiline in this group of otherwise untreated PD patients.</div>
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<term>Antiparkinson Agents (adverse effects)</term>
<term>Benzophenones (administration & dosage)</term>
<term>Benzophenones (adverse effects)</term>
<term>Catechol O-Methyltransferase Inhibitors</term>
<term>Dose-Response Relationship, Drug</term>
<term>Double-Blind Method</term>
<term>Drug Therapy, Combination</term>
<term>Female</term>
<term>Humans</term>
<term>Male</term>
<term>Middle Aged</term>
<term>Neurologic Examination (drug effects)</term>
<term>Nitrophenols</term>
<term>Parkinson Disease (drug therapy)</term>
<term>Pilot Projects</term>
<term>Selegiline (administration & dosage)</term>
<term>Selegiline (adverse effects)</term>
<term>Treatment Outcome</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="administration & dosage" xml:lang="en"><term>Antiparkinson Agents</term>
<term>Benzophenones</term>
<term>Selegiline</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="adverse effects" xml:lang="en"><term>Antiparkinson Agents</term>
<term>Benzophenones</term>
<term>Selegiline</term>
</keywords>
<keywords scheme="MESH" qualifier="drug effects" xml:lang="en"><term>Neurologic Examination</term>
</keywords>
<keywords scheme="MESH" qualifier="drug therapy" xml:lang="en"><term>Parkinson Disease</term>
</keywords>
<keywords scheme="MESH" xml:lang="en"><term>Administration, Oral</term>
<term>Aged</term>
<term>Catechol O-Methyltransferase Inhibitors</term>
<term>Dose-Response Relationship, Drug</term>
<term>Double-Blind Method</term>
<term>Drug Therapy, Combination</term>
<term>Female</term>
<term>Humans</term>
<term>Male</term>
<term>Middle Aged</term>
<term>Nitrophenols</term>
<term>Pilot Projects</term>
<term>Treatment Outcome</term>
</keywords>
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<front><div type="abstract" xml:lang="en">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 fluctuations while on levodopa/dopa decarboxylase inhibitor therapy. Because striatal dopamine is metabolized by COMT and monoamine oxidase (MAO), central COMT inhibition alone or in combination with MAO inhibition might provide symptomatic benefit for patients not receiving levodopa. We conducted a pilot study to evaluate the tolerability, safety, and efficacy of tolcapone alone and in combination with oral selegiline in early untreated PD patients. Patients were randomized to receive 200 mg tolcapone three times a day or placebo for the 8 weeks of the study. Open-label oral selegiline (5 mg in the morning and midday) was administered to all patients during the second 4 weeks of the study. There was no difference between treatment groups according to the investigator's assessment of tolerability at week 4. Ninety-five percent of tolcapone-treated patients and 98% of placebo-treated patients experienced excellent or good tolerability during the first 4 weeks (95% confidence interval [CI]: -10.3, 5.7; p = 0.57). A decrease in tolerability occurred in the tolcapone group during the second 4 weeks of the study following the addition of selegiline. The most commonly reported side effects were diarrhea (31% tolcapone, 7% placebo), nausea (21% tolcapone, 2% placebo), urine discoloration (12% tolcapone, 0% placebo), dizziness (12% tolcapone, 5% placebo), headaches (12% tolcapone, 10% placebo), and abdominal pain (10% tolcapone, 5% placebo). We did not identify symptomatic benefit associated with tolcapone alone or in combination with oral selegiline in this group of otherwise untreated PD patients.</div>
</front>
</TEI>
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