View clinical trials related to Parkinson Disease.
Filter by:The main purpose of this study is to examine the efficacy and safety of a repeated dosing ketamine infusion paradigm compared to placebo in individuals with PD. A subset of participants in each arm will undergo baseline and post-treatment PET and fMRI scans, to examine whether changes in synaptic density and reorganization of functional networks underlie ketamine's putative antidepressant effects in PD.
Parkinson's patients suffer from respiratory distress for different reasons. It is thought that physiotherapy methods that have an indirect effect on the diaphragm can improve respiratory functions. The aim of this study is to investigate the effects of spinal mobilization and diaphragmatic breathing techniques on respiratory function.
This study used Mini Nutrition Assessment (MNA) , Nutrition risk screening 2002(NRS-2002) and Non-motor Symptom Quest (NMSquest) to investigate the nutritional status of patients with Parkinson's disease, to analyze the correlation between non-motor symptoms and malnutrition in patients with Parkinson's disease (PD) , and to provide evidence for clinical treatment and early nutritional intervention.
The investigators are conducting a study to compare the self-reports of executive functions (that is to say, what role cognitive processes such as working memory and attention) in persons with Parkinson's Disease to the reports of executive functions completed by their significant others. To conduct this study, the investigators need the participation of persons who are diagnosed with Parkinson's Disease and their significant others.
To investigate the relationship between serum cystatin C and dopamine receptor(DAT) loss in patients with parkinson's disease(PD)
Deep brain stimulation of the subthalamic nucleus (STN DBS) in Parkinson's disease (PD) can provide substantial motor benefit yet can also produce unwanted mood and cognitive side effects. Although the neural mechanisms underlying benefits and side effects are not well understood, current hypotheses center on the potentially measurable yet currently undefined effects within downstream cortical networks. Limitations of current tools have impeded attempts to assess network connectivity directly and dynamically in humans with implanted DBS; PET lacks the necessary temporal resolution while fMRI is neither optimal nor safe for patients with implanted DBS. In this proposal, to overcome these significant limitations, the investigators apply high-density diffuse optical tomography (HD-DOT) methods to investigate how STN DBS modulates cortical functional networks and behavior in PD patients. HD-DOT uses a collection of functional near-infrared spectroscopy (fNIRS) measurements, free of radiation exposure concerns, and without electrical/metal artifacts or contraindications or safety concerns for DBS. However, common fNIRS systems are critically hampered by typically sparse measurement distributions that lead to poor anatomical specificity, unreliable image quality due to crosstalk with scalp signals, poor spatial resolution, limited field of view, unstable point spread functions, and uneven spatial coverage. HD-DOT solves these problems by using high-density interlaced source and detector imaging arrays that support densely overlapping measurements and anatomical head models that together result in higher spatial resolution, stable point spread functions, and greatly improved isolation of brain signals from scalp signals. The investigators have demonstrated that HD-DOT accurately maps functional connectivity (FC) within and between cortical resting state networks (RSNs) in the outer ~1cm of cortex with comparable temporal and spatial resolution to fMRI. Preliminary data in older controls and STN DBS patients that directly establish validity and feasibility for the proposed studies are provided. A recent comprehensive evaluation of FC in PD (without DBS) using fMRI found reduced within-network FC in visual, somatomotor, auditory, thalamic and cerebellar networks and reduced between-network FC involving predominantly cortical RSNs (somatomotor, sensory and association), some of which correlated with cognitive and motor dysfunction in PD. Notably, striatal RSNs were not abnormal. These data suggest that PD affects the interrelationships of cortical networks in a behaviorally meaningful way, far downstream of focal subcortical neuropathology. STN DBS is known to alter activity in downstream cortical regions that function as nodes within these dynamic cortical networks supporting movement and cognition. Thus, cortical network FC may play a critical role in mediating the impact of STN DBS on motor and non-motor behavior. Location of the stimulating contact may further modulate these downstream effects, due to the complex functional organization of the STN region. Study procedures include motor and cognitive tests, questionnaires, HD-DOT scanning, and MRI scans. The investigators propose to investigate how STN DBS influences downstream cortical network FC using HD-DOT. This information could lead to more efficient clinical optimization of DBS, identify potential cortical targets for less invasive neuromodulation, and lay the groundwork for future more complex experimental manipulations to determine the full range of STN DBS-induced cortical network responses to up-stream focal electrical perturbations, revealing fundamental properties of functional network plasticity.
The purpose of the present clinical trial is to determine whether the use of an elastic abdominal binder is effective in the non-pharmacological management of symptomatic, neurogenic orthostatic hypotension (OH) in individuals suffering from Parkinson's disease (PD) or Parkinson variant multiple system atrophy (MSA-P).
SMART-PD is an 8-session program designed to decrease the physiological, emotional, cognitive and behavioral effects of stress in participants with Parkinson's disease and their caregivers by teaching cognitive-behavioral techniques and relaxation skills to help participants learn to elicit the relaxation response, alter cognitive appraisals, improve healthy lifestyle behaviors and access social support. The SMART program has been shown to be effective for reducing mental health symptoms such as depression and anxiety as well as physical symptoms such as pain and in promoting positive health behaviors.
In Parkinson's disease (PD), recent work has shown that dopaminergic treatments alter one of the two aspects of impulsivity: they do not alter the propensity to produce "automatic" responses, but deteriorate the ability to inhibit and correct (that is, control) them. In healthy subjects, the investigator's team has also demonstrated that transcranial direct current "cathodal" electrical stimulation (tDCS) of Supplementary Motor Areas decreases the frequency of behavioral errors by improving the ability to "correct" responses. The main objective of this project is to determine whether cathodal tDCS of Supplementary Motor Areas in PD patients under dopaminergic treatment improves the control and correction of errors about to be made and compensates for the deficits induced by the treatment. All participants will perform a reaction time task of choice (Simon's task), with and without ("sham" session) tDCS. The experimental design of this single-center, single-blind, randomized study will be that of 3 parallel groups (treated Parkinson's disease, untreated Parkinson's disease patient, and matched control subjects) with cross-over application of tDCS. All participants will be blind to the operating mode of the tDCS (either functional or in "sham" mode corresponding to a control condition). The order of the sessions (with and without tDCS) will be randomized within each of the 3 groups of subjects. The analysis of errors about to be made but inhibited in time (known as "early errors") will be carried out through electromyographic (surface) recording of muscle activities involved in motor responses. tDCS is expected to improve the ability of treated patients to correct their errors about to be made. This study will thus provide a better understanding of the mechanisms of action control and possibly propose a new therapeutic approach for treatment-induced impulsivity disorders in Parkinson's disease.
The goal of this intervention is to explore the effectiveness of a Turning Intervention (TURN-IT) to improve quality of turning in participants with Parkinson's Disease (PD). An unique exercise program has been developed - TURN-IT - in which participants practice exercises that focus on physiological constraints that impair turning ability, such as axial rigidity, narrow base of support, bradykinesia, and inflexible set-shifting. The 60 participants with PD and a history of falls in the previous 12 months, will be randomized into a 6-week, 3x/week, one-on-one TURN-IT group or No-Intervention Control group. This pilot intervention study will determine the number of subjects needed for a future clinical trial and will determine the sensitivity to change with rehabilitation our daily-life turning quality measures (such as, mean and variability of number of steps to turn, turn amplitude, turn velocity). The investigators predict that the TURN-IT program will improve turning in daily life enough to justify a larger clinical trial.