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Find 73 clinical trials for parkinson's disease near Los Angeles, California. Connect with research centers in your area.
Showing 41-60 of 73 trials
NCT00363727
This study evaluates how effective a new formulation of a marketed drug is in increasing the time to onset of dyskinesia (abnormal twisting, writhing movements) in patients with Parkinson's Disease who have been taking levodopa for less than 2 years.
NCT00936676
Eligible participants, who participated in the ADAGIO trial and who sign an approved informed consent form, will be enrolled into the study at their original study locations. participants who have stopped rasagiline therapy and in the opinion of the investigator will gain clinical benefit from restarting treatment can also be considered for enrollment in the Core follow-up study period. Use of any other anti-PD treatment is permitted as deemed necessary by the treating physician (according to the participants clinical status).
NCT01845883
In this proposal the investigators have three Specific Aims using human patient populations as model systems; 1) identify a role for the Basal Ganglia (BG) in perceptual decision making; 2) determine whether the Basal Ganglia contribute to decision making under conditions of visual uncertainty; 3) determine whether the cerebellum plays a role in perceptual decision-making under conditions of visual uncertainty. The investigators designed experiments using healthy humans and humans with diseases known to affect the Basal Ganglia and the cerebellum, Parkinson's Disease, dystonia and non-dystonic cerebellar damage. With this approach the investigators will test the following hypotheses: 1) Patients with Parkinson's Disease and dystonia will have more difficulty than healthy controls making perceptual decisions when faced with sensory uncertainty; when sensory information is certain, patients will show improved decision-making but will still be impaired relative to healthy humans. Hypothesis 2: If ambiguous sensory information is aided by prior information, patients with Parkinson's Disease and dystonia will be unable to use the prior (bias/memory) information to inform their decisions. Hypothesis 3: Deep Brain Stimulation (DBS) of Basal Ganglia structures will improve the ability of patients to use prior information to inform their decisions when faced with sensory uncertainty. Hypothesis 4: Both cholinergic and dopaminergic medical therapies will improve the ability of patients to use prior information to inform their decisions. Hypothesis 5: Patients with non-dystonic cerebellar damage will be similar to healthy controls in performance of a perceptual decision making task in conditions of visual uncertainty. The overarching framework of this application is that the same mechanisms (D1 striatal synaptic plasticity) that operate in reward learning play a role in learning and using stimulus priors in a perceptual decision-making task when faced with uncertainty. Because Parkinson's Disease and dystonia share deficits in striatal circuitry, the patient deficits on this task will be similar. Because non-dystonic cerebellar patients do not have dysfunction of striatal circuits, they will show no deficits in the ability to use stimulus priors to guide choices in uncertain conditions. In the event these patients do show deficits, this is will provide evidence for an unexplored role for the cerebellum in perceptual decision-making.
NCT01280123
This is a multi-center, double-blind, placebo controlled clinical trial of two dosages of oral pioglitazone (15 milligram(mg) and 45 milligram (mg)) for safety, tolerability, and futility. Subjects who are on stable dose of rasagiline 1 mg/day or selegiline 10 mg/day for at least 8 weeks but no more than 8 months, will be randomized to one of two dosages of oral pioglitazone (15 mg and 45 mg) or matching placebo. The study will measure disease progression by the change in total Unified Parkinson's Disease Rating Scale (UPDRS) score between the baseline visit and 44 weeks.
NCT01076452
The goal of the second phase of the study is to determine if simultaneous bilateral subthalamic nucleus stimulation or simultaneous bilateral globus pallidus stimulation is more effective in reducing symptoms of Parkinson's Disease.
NCT00833690
The purpose of this study is to determine the safety and tolerability of inosine and its ability to raise urate levels in blood and cerebral spinal fluid in individuals with early Parkinson disease. This will determine whether it is appropriate to proceed with a larger study of inosine's ability to modify the rate of disability progression in PD.
NCT00056563
The goals of this study are to determine if simultaneous bilateral subthalamic nucleus stimulation or simultaneous bilateral globus pallidus stimulation is more effective in reducing symptoms of Parkinson's disease, and if deep brain stimulation or best medical therapy is more effective in improving Parkinson's disease symptoms
NCT01174771
Drug therapy of atypical parkinsonism is generally considered either ineffective or minimal 1. Therefore, there is an urgent need to find alternative therapies to treat atypical parkinsonian disorders. Repetitive transcranial magnetic stimulation (rTMS) is a noninvasive tool that modulates cortical excitability with minimal discomfort and holds therapeutic promise in treating neurological and psychiatric disorders. The basal ganglia-thalamocortical circuits that are affected in Progressive Supranuclear Palsy (PSP) and Corticocbasal Ganglionic Degeneration (CBGD) are likely structurally and functionally segregated. The 'motor' circuit is implicated in parkinsonian akinesia and hypokinesia; a 'prefrontal' circuit is implicated in working memory and mood regulation, and linked with non-motor symptoms such as depression and apathy. In this proposal, we characterize motor and prefrontal network dysfunction in PSP and CBGD patients, and propose that high-frequency and low-frequency rTMS directed over separate motor and prefrontal cortical targets of each network may show specific and selective beneficial effects on motor vs. cognitive function in PSP and CBGD patients, respectively. Quantitative motor outcome measures include timed finger tapping tasks. Quantitative cognitive outcome measures comprise a visual analogue scale (VAS). If successful, this pilot study will provide proof of principle data to suggest potential benefits for rTMS in PSP/CBGD patients, and provide sufficient data and experience to support future PSP/CBGD studies that include the use of rTMS to investigate the pathophysiology of motor and non-motor features of PSP and CBGD patients.
NCT00144300
To determine if there is any difference in the presence of retinal deterioration in PD patients treated with pramipexole IR versus ropinirole as monitored by comprehensive ophthalmologic assessments from baseline to the end of study at two years.
NCT01803945
This is a randomized, double-blind, placebo-controlled, multiple-ascending dose study of orally administered AVE8112 in patients with Parkinson's Disease (PD).
NCT02136914
This is a multi-center, randomized, double-blind, placebo-controlled, 2-arm, parallel group study to evaluate the efficacy and safety of ADS-5102 extended release (ER) capsules, an investigational formulation of amantadine, dosed once nightly at bedtime for the treatment of levodopa induced dyskinesia (LID) in subjects with Parkinson's disease (PD). The novel pharmacokinetic profile of ADS-5102 is expected to achieve i) maximal concentrations in the early morning through mid-day, when LID can be troublesome, and ii) lower concentrations in the evening, potentially reducing the negative impact of amantadine on sleep. This pharmacokinetic profile could enable higher doses to be tolerated with a once-nightly ER formulation than can be tolerated with an immediate-release formulation. The once-nightly dosing regimen may also provide enhanced convenience and compliance. In a previous clinical study, ADS-5102 met its primary endpoint; LID was significantly reduced as measured by the change in UDysRS score over 8 weeks vs. placebo.
NCT02224664
This study will be an open label, dose escalation study to investigate the safety, tolerability, pharmacokinetics and pharmacodynamics of repeated daily quaque die (QD) doses given over 21 days (Day 3 to Day 23) to sequential cohorts of subjects with Parkinson's disease. Each cohort will have 2 study periods. For each cohort, subjects will enter Period 1 and if they meet criteria, approximately 12 subjects will be enrolled into Period 2 and dosed with PF 06649751. Based on results observed in a previous study, Cohorts 1 and 2 will not be conducted. Cohorts 3 - 6 will test doses uptitrated to 5 mg, 15 mg and 25 mg QD. Doses may be modified based on emerging safety, tolerability and PK data, but the maximum daily dose that will be given in any cohort will have PK predictions at steady state that are anticipated to be below toxicokinetic limits. An option for down titration to the previous dose level is available should the investigator consider that an AE is intolerable. Following down titration, a single up titration to the next dose level may be attempted if the subject remains symptom free for at least 48 hrs. Safety, tolerability and PK data of Cohort 3 will be reviewed prior to initiating the dosing in Cohorts 4 and 5. Available safety, tolerability and PK data up to Day 24 of at least 5 subjects from Cohorts 4 will be reviewed prior to initiating the dosing in Cohort 6.
NCT00632736
To evaluate the safety profile of ropinirole XL during long-term treatment in subjects with early and advanced Parkinson's disease
NCT00522379
The purpose of this study is to show Rotigotine dose response at four doses of Rotigotine used with L-dopa in treating advanced stage Parkinson's disease.
NCT01366027
PBA is a neurologic condition that is estimated to impact over a million patients and their families in the United States. PBA occurs secondary to an otherwise unrelated neurologic disease or injury, and manifests as involuntary, frequent, and disruptive outbursts of crying and/or laughing. Progress has been made in better understanding this debilitating condition, but much more needs to be done. That's why a new PBA patient registry, PRISM (Pseudobulbar Affect RegIstry Series), has been initiated. The goal of PRISM is to establish the prevalence and quality of life (QOL) impact of PBA in patients with underlying neurologic conditions including * Alzheimer's disease * Amyotrophic lateral sclerosis * Multiple sclerosis * Parkinson's disease * Stroke * Traumatic brain injury Because this is an observational registry, it doesn't require you to intervene with any specific treatment or procedure. Your participation allows the PRISM registry to collect and analyze data from your site and also compare it to national numbers captured in the PRISM registry about PBA across all of the major at-risk neurologic populations.
NCT00601523
The general aim of this study is to obtain long-term safety and tolerability data on pramipexole ER, in daily doses from 0.375mg to 4.5mg once daily (q.d), in patients who have previously completed a pramipexole double-blind study in early PD (248.524(NCT00479401) or 248.636(NCT00558025) trial).
NCT00321854
This is a double blind, placebo-controlled clinical trial of 15 months duration designed to examine early Mirapex (pramipexole) treatment vs. delayed Mirapex (pramipexole) treatment in patients with new onset Parkinsons disease
NCT01744496
This trial is being conducted to compare the impact of Rotigotine and Placebo on Chronic Pain associated with Parkinson's Disease among patients with advanced stages of the disease.
NCT01536821
The PROGENI Family Study is part of a larger consortium that is studying a gene shown to be important in Parkinson's disease, called LRRK2. People who have a defect in the LRRK2 gene will often develop Parkinson's disease. Eligible participants will be asked to complete a single Study Visit at an affiliated research facility closest to their home.
NCT01738178
Parkinson's disease is a common neurodegenerative disorder in which patients experience progressive motor disability and many disabling non-motor symptoms. Recent studies have consistently found that people who do not use caffeine are at higher risk of developing Parkinson's disease. This suggests that caffeine may have potential as a treatment for PD. In a pilot study of caffeine for daytime sleepiness in PD, there was evident benefit on the motor manifestations of disease. There have been other lines of evidence that have suggested caffeine could be useful in PD. This study is to evaluate the efficacy of caffeine 200 mg BID vs matching placebo for motor and non-motor aspects of disease. This will be in three stages. In the first six-month stage, medications will be held constant, to see whether caffeine does have motor benefits. Then we will perform a four-year extension stage to define if the effects of caffeine persist (or even magnify), and to see if caffeine helps reduce dose of other PD meds and/or prevents their side effects. Finally, we will finish with a six-month stage in which we will place all patients on caffeine - this will allow us to assess caffeine's use in later disease, but more importantly, will assess whether early use of caffeine produces long term changes beyond its immediate effects.
