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NCT00040196 · ClinicalTrials.gov registry record
How the Loss of Dopamine and Dopamine-Restoring Medicines Affect Movement Performance
A clinical trial of Parkinson Disease, sponsored by National Institute of Neurological Disorders and Stroke (NINDS).
- Completed
- Registry status
- 133
- Enrollment target
- 1
- Study location
NCT00040196: Completed study of Parkinson Disease, sponsored by National Institute of Neurological Disorders and Stroke (NINDS).
NCT00040196 is a study of Parkinson Disease that has completed, run by National Institute of Neurological Disorders and Stroke (NINDS). The registered enrollment target is 133 participants, below the 5,326-participant average among 297 other Parkinson Disease trials with a reported enrollment target (98% lower). The trial reports 1 study location across 1 state. According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT00040196, a study of Parkinson Disease, has completed, sponsored by National Institute of Neurological Disorders and Stroke (NINDS).
- COMPLETED
- Registry status
- 133 participants
- Enrollment target
- 1
- Study location
Study Summary
This study has two purposes: 1) to understand the effect of a decline of dopamine in the brain during normal aging and in patients with Parkinson's disease, and 2) to investigate how medicines used to treat Parkinson's disease improve movement performance in patients. Patients with Parkinson's disease have difficulty performing precise finger movements, mainly because of a dramatic decrease of a substance called dopamine in parts of the brain. Medicines such as levodopa, which help restore dopamine levels, can greatly improve function; however, little is known about how these drugs work. In normal aging, dopamine decreases slightly in certain parts of the brain, but the importance of this decline is poorly understood. This study may provide new information about Parkinson's disease and normal aging that might lead to better treatment strategies. Patients with mild to moderate Parkinson's disease and healthy volunteers 21 years of age and older may be eligible for this study. All participants must be right-handed. All candidates will be screened with a medical history and physical and neurological examinations, including memory tests and mood examination. Brain function will be studied using functional magnetic resonance imaging (fMRI) study and positron emission tomography (PET). Participants may be asked to stop using medications that can affect the central nervous system, such as sleeping pills or drugs for depression or anxiety, for 1 week before each study visit. Patients with Parkinson's disease may also be asked to stop using antiparkinsonian medications at least 12 hours before each visit. In addition, all participants will be asked to abstain from alcoholic beverages at least 24 hours before the fMRI and PET scans, and from nicotine and caffeine for at least 12 hours before the scans. Participants will have fMRI, which uses a strong magnetic field and radio waves to create images of the brain. The subject lies on a table in a tunnel-like cylinder (the sc
Conditions Studied
Study Locations (1)
Maryland
- National Institutes of Health Clinical Center, 9000 Rockville Pike - Bethesda
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 133 participants |
| Start Date | 2002-06-19 |
| Est. Completion | 2009-07-09 |
What the finished NCT00040196 record still lists
NCT00040196 is an observational study that tracks outcomes without assigning an intervention. The registered 133 participants enrollment target is mid-sized for trials with a published cap, below the 5,326-participant average among 297 other Parkinson Disease trials with a reported enrollment target (98% lower).
The record links to 1 condition, with Parkinson Disease appearing as the primary indexed condition, and to 0 interventions.
NCT00040196 reports a single indexed study location in Maryland.
Frequently Asked Questions
What is clinical trial NCT00040196 about?
NCT00040196 is a clinical study titled "How the Loss of Dopamine and Dopamine-Restoring Medicines Affect Movement Performance". This study has two purposes: 1) to understand the effect of a decline of dopamine in the brain during normal aging and in patients with Parkinson's disease, and 2) to investigate how medicines used to treat Parkinson's disease improve movement performance in patients. Patients with Parkinson's dise...
What is the current status of trial NCT00040196?
This trial is currently completed. The enrollment target is 133 participants. The study started on 2002-06-19. Estimated completion is 2009-07-09.
What conditions does trial NCT00040196 study?
This clinical trial studies the following conditions: Parkinson Disease.
Who is sponsoring clinical trial NCT00040196?
This trial is sponsored by National Institute of Neurological Disorders and Stroke (NINDS), which has 567 total clinical trials registered on ClinicalTrials.gov.
Where is trial NCT00040196 being conducted?
This trial has 1 study location across Maryland. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
Learn More About Clinical Trials
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Matched on the same primary condition, ranked to surface studies in the same phase first, then by recruiting status, no relevance scoring or editorial curation.
Where NCT00040196's enrollment target sits among peer trials
133 61st of 297 higher than 237 of 297 other Parkinson Disease trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other Parkinson Disease trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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