1991
Dopamine sulfate in ventricular cerebrospinal fluid and motor function in Parkinson's disease.
Cedarbaum J, Olanow CW. Dopamine sulfate in ventricular cerebrospinal fluid and motor function in Parkinson's disease. Neurology 1991, 41: 1567-70. PMID: 1922797, DOI: 10.1212/wnl.41.10.1567.Peer-Reviewed Original ResearchConceptsAdvanced Parkinson's diseaseDopamine sulfateParkinson's diseaseDopamine sulfate levelsLevodopa/carbidopaTime of transplantationPeak plasma concentrationAvailability of dopamineVentricular cerebrospinal fluidSulfate levelsClinical improvementMotor fluctuationsOmmaya reservoirSingle doseExogenous levodopaParkinsonian brainMotor functionPlasma concentrationsLateral ventricleCerebrospinal fluidAdrenal medullaLevodopaPatientsDiseaseDopamineReduction of Circulating 3-O-Methyldopa by Inhibition of Gatechol-O-Methyltransferase With OR-611 and OR-462 in Cynomolgus Monkeys: Implications for the Treatment of Parkinson's Disease.
Cedarbaum J, Leger G, Guttman M. Reduction of Circulating 3-O-Methyldopa by Inhibition of Gatechol-O-Methyltransferase With OR-611 and OR-462 in Cynomolgus Monkeys: Implications for the Treatment of Parkinson's Disease. Clinical Neuropharmacology 1991, 14: 330. PMID: 1913700, DOI: 10.1097/00002826-199108000-00005.Peer-Reviewed Original ResearchTemporal relationships between plasma and cerebrospinal fluid pharmacokinetics of levodopa and clinical effect in Parkinson's disease
Olanow CW, Gauger LL, Cedarbaum JM. Temporal relationships between plasma and cerebrospinal fluid pharmacokinetics of levodopa and clinical effect in Parkinson's disease. Annals Of Neurology 1991, 29: 556-559. PMID: 1859185, DOI: 10.1002/ana.410290516.Peer-Reviewed Original ResearchConceptsVentricular cerebrospinal fluidCerebrospinal fluidParkinson's diseasePlasma levodopa concentrationsAdvanced Parkinson's diseaseCerebrospinal fluid pharmacokineticsPharmacokinetics of levodopaCentral nervous systemLevodopa levelsOmmaya reservoirClinical effectsLevodopa effectsParkinsonian patientsLevodopa concentrationsHomovanillic acidNervous systemDrug concentrationsLevodopaDiseaseMotor performancePatientsTime coursePharmacokineticsTemporal relationshipNucleus transplantation
1990
Effect of Nitecapone (OR-462) on the Pharmacokinetics of Levodopa and 3-O-Methyldopa Formation in Cynomolgus Monkeys.
Cedarbaum JM, Léger G, Reches A, Guttman M. Effect of Nitecapone (OR-462) on the Pharmacokinetics of Levodopa and 3-O-Methyldopa Formation in Cynomolgus Monkeys. Clinical Neuropharmacology 1990, 13: 544. PMID: 2276119, DOI: 10.1097/00002826-199012000-00006.Peer-Reviewed Original ResearchConceptsCynomolgus monkeysEffect of nitecaponePeripheral COMT inhibitorSingle-dose studyPharmacokinetics of levodopaBlood-brain barrierConcentration-time curveLevodopa administrationPlasma pharmacokineticsCOMT inhibitorsAdverse physiological effectsFurther inhibitionLevodopaDoseNitecaponePhysiological effectsMonkeysPharmacokineticsNovel inhibitorsInhibitorsInhibitionCarbidopaAdministrationSustained enteral administration of levodopa increases and interrupted infusion decreases levodopa dose requirements.
Cedarbaum J, Silvestri M, Kutt H. Sustained enteral administration of levodopa increases and interrupted infusion decreases levodopa dose requirements. Neurology 1990, 40: 995-7. PMID: 2345621, DOI: 10.1212/wnl.40.6.995.Peer-Reviewed Original ResearchConceptsInterrupted infusionTherapeutic response fluctuationsStriatal dopamine receptorsContinuous enteral infusionLevodopa dose requirementEnteral administrationEnteral infusionContinuous infusionDopamine receptorsInfusion rateParkinson's diseaseDose requirementsInfusionResponse fluctuationsMotor performanceLevodopaDiseasePatientsAdministrationReceptors
1989
A pharmacokinetic and pharmacodynamic comparison of Sinemet CR (50/200) and standard Sinemet (25/100).
Cedarbaum JM, Kutt H, McDowell FH. A pharmacokinetic and pharmacodynamic comparison of Sinemet CR (50/200) and standard Sinemet (25/100). Neurology 1989, 39: 38-44; discussion 59. PMID: 2586762.Peer-Reviewed Original ResearchConceptsSinemet CRLevodopa levelsNew controlled-release formulationStandard Sinemet 25/100Advanced Parkinson's diseasePlasma levodopa levelsBioavailability of levodopaClinical observation studyAntiparkinsonian effectsLevodopa intakeSinemet 25/100Standard SinemetPharmacodynamic comparisonMedication dosesInterdose intervalParkinson's diseaseCR preparationControlled-release formulationLevodopaMotor performanceCarbidopaObservation studyDiseaseProlongationSinemet
1988
Clinical significance of the relationship between O-methyldopa levels and levodopa intake.
Cedarbaum J, Kutt H, McDowell F. Clinical significance of the relationship between O-methyldopa levels and levodopa intake. Neurology 1988, 38: 533-6. PMID: 3352906, DOI: 10.1212/wnl.38.4.533.Peer-Reviewed Original ResearchConceptsDaily intakeRecent clinical trialsMean daily intakeTotal daily intakeLevodopa intakeStandard SinemetClinical responseLevodopa preparationsBrain uptakeClinical trialsPlasma concentrationsClinical significanceBlood samplingLevodopaTherapeutic efficacyMethyldopa levelsControlled-release formulationPatientsIntakeTime curveAUCSinemetLevelsTrialsControlled-Release Levodopa/Carbidopa III: Sinemet CR5 Treatment of Response Fluctuations in Parkinson's Disease.
Cedarbaum JM, Hoey M, Kutt H, McDowell FH. Controlled-Release Levodopa/Carbidopa III: Sinemet CR5 Treatment of Response Fluctuations in Parkinson's Disease. Clinical Neuropharmacology 1988, 11: 168. PMID: 3378225, DOI: 10.1097/00002826-198804000-00008.Peer-Reviewed Original ResearchConceptsSinemet CR4Parkinson's diseasePeak plasma levodopa concentrationResponse fluctuationsOpen-label studyAdvanced Parkinson's diseasePlasma levodopa concentrationsStandard SinemetInterdose intervalDaily dosesTherapeutic responseLevodopa concentrationsSame patientLabel studyDiseaseRelative bioavailabilityPatientsGreater delayTreatmentSinemetLevodopaDoses
1987
Controlled-release levodopa/carbidopa. II. Sinemet CR4 treatment of response fluctuations in Parkinson's disease.
Cedarbaum J, Breck L, Kutt H, McDowell F. Controlled-release levodopa/carbidopa. II. Sinemet CR4 treatment of response fluctuations in Parkinson's disease. Neurology 1987, 37: 1607-12. PMID: 3658164, DOI: 10.1212/wnl.37.10.1607-a.Peer-Reviewed Original ResearchConceptsSinemet CR4Interdose intervalParkinson's diseaseResponse fluctuationsTherapeutic response fluctuationsOpen-label trialPlasma levodopa levelsSlow-release preparationAntiparkinsonian effectsStandard levodopaLevodopa dosesLevodopa preparationsLevodopa levelsDaily dosesRelease preparationDiseaseLevodopaDosesProlongationTreatmentOverall benefitSinemetPatientsSlight reductionControlled-release levodopa/carbidopa. I. Sinemet CR3 treatment of response fluctuations in Parkinson's disease.
Cedarbaum J, Breck L, Kutt H, McDowell F. Controlled-release levodopa/carbidopa. I. Sinemet CR3 treatment of response fluctuations in Parkinson's disease. Neurology 1987, 37: 233-41. PMID: 3808304, DOI: 10.1212/wnl.37.2.233.Peer-Reviewed Original ResearchConceptsPlasma levodopa levelsLevodopa levelsResponse fluctuationsParkinson's diseaseControlled-release carbidopa/levodopaCarbidopa/levodopaOpen-label trialBioavailability of levodopaStandard SinemetDisability scoresLevodopa preparationsInterdose intervalDaily dosesParkinson's patientsControlled-release formulationClinical performanceDiseaseLevodopaDay consistencyOverall benefitSinemetPatientsDosesTrialsWeeks