Active clinical trials for "Parkinson Disease"

This is an open-label cross-over randomized control study comparing the effect of modafinil and methylphenidate in patients with Parkinson's disease with excessive daytime sleepiness.

We propose to build on preliminary data evaluating non-dopaminergic/non-motor clinical biomarkers to more fully assess these markers at the threshold of Parkinson disease (PD). Development of reliable biomarkers for both dopaminergic and non-dopaminergic manifestations of Parkinson disease (PD) and related disorders may dramatically accelerate research on PD etiology, pathophysiology, and therapeutics. Biomarkers are broadly defined as characteristics that are objectively measured and evaluated as indicators of normal biological processes, pathogenic processes, or pharmacologic responses to a therapeutic intervention. Specific biomarkers may be useful at the onset of neurodegeneration, the onset of disease, and/or to mark disease progression.

Randomized Controlled Trial (RCT) aiming at assessing the efficacy of an interdisciplinary multi-component and personalized multi-factorial intervention for reducing falls at one year post-enrolment in comparison to the usual care in a sample of community dwelling elderly (age ≥65 years), with or without Parkinson's Disease and/or previous Stroke.

Primary objectives. The ability of the RC+S to record Local Field Potentials (LFP's) is novel in Deep Brain Stimulation (DBS) technology. The primary goals of this project are to use this function of the RC+S to characterize: The state- and target-dependency of neuronal oscillations in the subthalamic nucleus (STN), internal globus pallidus (GPi) or external globus pallidus (GPe) of patients with PD, How these oscillations are altered by levodopa, The effects of unilateral standard clinical isochronal (e.g. 140 Hz) GPi-, GPe-, and STN-DBS on oscillatory activity and its relationship to the presence and severity of parkinsonian motor signs. These experiments will leverage the capacity to record LFPs from macroelectrodes implanted in either the GPi/GPe or STN using the Medtronic RC+S DBS system. The long-term goal for this project is to develop closed-loop methods for DBS that are state (resting vs. movement) and movement-phase appropriate. Secondary objectives. In addition to establishing the relationship between neural oscillations in the STN, GPi and GPe to clinical and quantitative measures of akinesia, bradykinesia, tremor and rigidity, this project will also examine the relationship of neural oscillations to: Levodopa-resistant motor features such as postural instability and gait (including freezing of gait), Response inhibition and impulse control.

This is a prospective study to demonstrate the safety and efficacy of differentiated neurons-derived from adult CNS progenitors cells transplanted in selected patients with Parkinson's disease.

The purpose of this study is to determine the efficacy of Droxidopa for the treatment of fatigue in patients with Parkinsonism by the Visual Analog Fatigue Scale (VAFS). This is a randomized, placebo-controlled, double-blind clinical trial for 3 months where half the subjects will receive placebo and the other half will receive Droxidopa. Following this will be a wash-out period of 7 days and then all subjects will receive Droxidopa for 3 months during the open-label phase.

Deep brain stimulation of the subthalamic nucleus is an effective treatment for Parkinson's disease. The analysis of cerebral signals of the subthalamic nucleus by local field potentials, provides one of the main electrophysiological markers of the success of the stimulation. This marker can be used to evaluate new paradigms of stimulation. So far, little studied, the temporal characteristics of the stimulation are very important in the effectiveness of the stimulation of the subthalamic nucleus, in Parkinson's disease. The first objective (Study I) is to compare the effectiveness of the stimulation when it is applied with biphasic symmetrical pulses and when applied with the standard pulses applied so far. The second objective (Study II) is to see if, by applying pseudo-random time intervals between each stimulation pulse, if it would be possible to improve the efficiency and to limit the side effects of the stimulation. The third objective (Study III) is to evaluate the electrophysiological changes of the subthalamic nucleus caused by the general anesthesia, in the anticipation of the realization of the surgery of the stimulation of the subthalamic nucleus under general anesthesia.

The aim of this study was to compare the effects of Hatha Yoga versus Stretching on physical outcomes, quality of life, physical activity and motor examination in persons with Parkinson Disease. The hypothesis of this study is that Hatha Yoga will improve more than Stretching on physical outcomes, quality of life, physical activity and on motor examinations in persons with parkinson Diseases

The underlying goal of this study is to assess [123I]MNI-420 SPECT imaging as a tool to detect A2aR density in the brain of PD and HD research participants to be compared with similarly aged healthy subjects.

Functional magnetic resonance imaging (fMRI) is a non-invasive imaging technique assessing neuronal activations during motor or cognitive tasks. The MRI sequences used are currently optimized for the study of cortex activations, particularly concerning the echo time (TE).Very few studies are interested in optimizing the fMRI for the study of the basal ganglia, structure implicated in many neurological diseases such as Parkinson's disease. The T2 * is a tissue parameter dependent of iron content, which differs with brain structures and probably also with age and in case of neurodegenerative disease. Optimal TE s should correspond to the T2 * of studied brain structure The primary purpose is to optimize the fMRI by a quantitative measurement of the T2* in the cortex and the basal ganglia using MRI. The secondary purpose is to study the effect of age and Parkinson's disease on T2*.