Parkinson Disease Clinical Trial
Official title:
State-dependent Pathophysiological Oscillations in Parkinson's Disease and Treatment With DBS Using the Medtronic RC+S
Verified date | April 2021 |
Source | University of Minnesota |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
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: 1. 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, 2. How these oscillations are altered by levodopa, 3. 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: 1. Levodopa-resistant motor features such as postural instability and gait (including freezing of gait), 2. Response inhibition and impulse control.
Status | Withdrawn |
Enrollment | 0 |
Est. completion date | December 31, 2020 |
Est. primary completion date | December 31, 2020 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 45 Years to 75 Years |
Eligibility | Inclusion Criteria: - Diagnosis of idiopathic PD. - Age 45-75 years - Demonstrated good response (= 30%) to Sinemet or dopamine agonist medications as assessed by total UPDRS III score (off and on meds) - Clinical plan for unilateral STN- or GPi-DBS surgery to treat their clinical motor signs within the next four months - Written documentation of willingness to participate in the study per protocol as evidenced by the informed consent process Exclusion Criteria: - Clinically significant medical disease that would increase the risk of developing pre- or post-operative complications (e.g., major cardiac or pulmonary disease) - Evidence of secondary or atypical parkinsonism - Dementia as evidenced by impairment in two neuropsychological domains and impaired or borderline neuropsychological function in one additional domain. - Unable to undergo MR imaging (e.g., due to incompatible implanted pacemaker) - Previous pallidotomy or DBS surgery - Women who are currently pregnant - MRI brain abnormalities that could indicate a neurological disorder other than idiopathic Lewy body Parkinson's disease. - Subjects with severe or poorly controlled depression defined according to DSM-V criteria and a scored on a validated depression assessment scale. - Epilepsy - Immunocompromised - Requires diathermy, electroconvulsive therapy (ECT) or transcranial magnetic stimulation (TMS) to treat a chronic condition - Has an implanted electronic device such as a neurostimulator, cardiac pacemaker or medication pump. |
Country | Name | City | State |
---|---|---|---|
United States | University of Minnesota | Minneapolis | Minnesota |
Lead Sponsor | Collaborator |
---|---|
University of Minnesota |
United States,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Passive and Active Rigidity Quantification | Peak resistive torque integral of resistive torque over the pronation and supination Range of Motion (ROM) | 6-months | |
Primary | Ballistic Elbow Flexion to a Target: Peak Velocity | Peak velocity | 6-months | |
Primary | Ballistic Elbow Flexion to a Target: Stop Reaction Time | Stop reaction time | 6-months | |
Primary | Rapid Alternating Pronation-Supination Movements: RMS | Root Mean Square (RMS)-Displacement RMS | 6-months | |
Primary | Rapid Alternating Pronation-Supination Movements: Freezing Episodes Duration | Duration of hesitation or arrest (freezing) episodes | 6-months | |
Primary | Rapid Alternating Pronation-Supination Movements: Freezing Episodes Number | Number of hesitation or arrest (freezing) episodes | 6-months | |
Primary | Gait: Step length | Step length | 6-months | |
Primary | Gait: Step Time | Step time | 6-months | |
Primary | Gait: Double Support Time | Double support time | 6-months | |
Primary | Gait: Obstacles | Percentage of obstacles successfully avoided | 6-months | |
Primary | Gait: Freezing Episodes Duration | Duration of freezing episodes | 6-months | |
Primary | Gait: Freezing Episodes Number | Number of freezing episodes | 6-months |
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