Intravenous Levodopa for the Diagnosis of Parkinson's Disease

This study has been completed.

Sponsor:

Information provided by:

National Institutes of Health Clinical Center (CC)

ClinicalTrials.gov Identifier:

NCT00001928

First received: November 3, 1999

Last updated: March 3, 2008

Last verified: March 1999

History of Changes

Tracking Information
First Received Date ^ICMJE	November 3, 1999
Last Updated Date	March 3, 2008
Start Date ^ICMJE	March 1999
Primary Completion Date	Not Provided
Current Primary Outcome Measures ^ICMJE	Not Provided
Original Primary Outcome Measures ^ICMJE	Not Provided
Change History	Complete list of historical versions of study NCT00001928 on ClinicalTrials.gov Archive Site
Current Secondary Outcome Measures ^ICMJE	Not Provided
Original Secondary Outcome Measures ^ICMJE	Not Provided
Current Other Outcome Measures ^ICMJE	Not Provided
Original Other Outcome Measures ^ICMJE	Not Provided

Descriptive Information
Brief Title ^ICMJE	Intravenous Levodopa for the Diagnosis of Parkinson's Disease
Official Title ^ICMJE	Intravenous Levodopa in Parkinsonism
Brief Summary	Patients with Parkinson's disease have low levels of the neurotransmitter dopamine. Dopamine is responsible for motor function and normal physical activity. Patients with Parkinson's disease typically suffer from tremors, rigid muscles, stooped postures, and walk with a shuffle. The drug levodopa acts as a replacement for dopamine and has been has been used effectively for over 30 years as treatment for Parkinsons disease. Because of its effectiveness, levodopa has been used to distinguish Parkinson's disease from other conditions that may resemble Parkinson's disease. Traditionally, levodopa has been given as a pill. In this study, researchers would like to inject levodopa directly into a vein (intravenous) in order to diagnose cases of Parkinson's disease. This method provides immediate results and allows doctors to adjust the dose of levodopa very carefully. Because the intravenous method of giving levodopa is less practical than oral medication, it is not an available alternative for the routine treatment of Parkinson's disease. However, it may be useful for faster diagnosis of the disease and for determining effective doses of oral medication.
Detailed Description	A positive response to levodopa is now considered a condition sine qua non for the diagnosis of idiopathic Parkinson's disease. Under this protocol, patients with parkinsonism of uncertain etiology will be tested for their motor response to intravenous levodopa to aid in the diagnosis of Parkinson's disease. This protocol regulates and stipulates the acute administration of intravenous levodopa and associated safety issues.
Study Type ^ICMJE	Observational
Study Design ^ICMJE	Not Provided
Target Follow-Up Duration	Not Provided
Biospecimen	Not Provided
Sampling Method	Not Provided
Study Population	Not Provided
Condition ^ICMJE	Parkinson Disease
Intervention ^ICMJE	Not Provided
Study Group/Cohort (s)	Not Provided
Publications *	Fabbrini G, Juncos J, Mouradian MM, Serrati C, Chase TN. Levodopa pharmacokinetic mechanisms and motor fluctuations in Parkinson's disease. Ann Neurol. 1987 Apr;21(4):370-6. Mouradian MM, Juncos JL, Fabbrini G, Chase TN. Motor fluctuations in Parkinson's disease: pathogenetic and therapeutic studies. Ann Neurol. 1987 Oct;22(4):475-9. Fabbrini G, Mouradian MM, Juncos JL, Schlegel J, Mohr E, Chase TN. Motor fluctuations in Parkinson's disease: central pathophysiological mechanisms, Part I. Ann Neurol. 1988 Sep;24(3):366-71.
* Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.

Recruitment Information
Recruitment Status ^ICMJE	Completed
Enrollment ^ICMJE	25
Completion Date	July 2000
Primary Completion Date	Not Provided
Eligibility Criteria ^ICMJE	All patients will have parkinsonism of undetermined etiology. Males and females between the ages of 18 and 85 are eligible for the study. No presence or history of any medical condition that can reasonably be expected to subject the patient to unwarranted risks, specifically those who have the following: a history of convulsive, hepatic, or renal disorders; currently receiving treatment for myocardial infarction, arrhythmia or cardiac failure; and pregnant women or anyone not practicing an effective means of birth control.
Gender	Both
Ages	Not Provided
Accepts Healthy Volunteers	No
Contacts ^ICMJE	Contact information is only displayed when the study is recruiting subjects
Location Countries ^ICMJE	United States

Administrative Information
NCT Number ^ICMJE	NCT00001928
Other Study ID Numbers ^ICMJE	990072, 99-N-0072
Has Data Monitoring Committee	Not Provided
Responsible Party	Not Provided
Study Sponsor ^ICMJE	National Institute of Neurological Disorders and Stroke (NINDS)
Collaborators ^ICMJE	Not Provided
Investigators ^ICMJE	Not Provided
Information Provided By	National Institutes of Health Clinical Center (CC)
Verification Date	March 1999
^ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP

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