Active clinical trials for "Parkinson Disease"

The purpose of the study is to test the neuroprotective and anti-inflammatory properties of semaglutide in idiopathic Parkinson's disease (PD)

The purpose of this international study is to evaluate long-term safety and effectiveness of Abbott deep brain stimulation (DBS) systems for all indications, including Parkinson's disease, essential tremor or other disabling tremor and dystonia.

Every year, approximately 9,000 Parkinson disease (PD) patients undergo deep brain stimulator (DBS) placement into the subthalamic nucleus (STN-DBS). Studies suggest that PD patients with mutations in the glucocerebrosidase (GBA) gene are at high risk for cognitive impairment and approximately 10-17% of subjects undergoing DBS carry GBA mutations. There may be an interaction between STN-DBS, which also impairs cognitive function, and GBA, resulting in worsened cognitive function. This project will 1) determine the relationship between GBA mutation status and post-operative STN-DBS cognitive function, 2) broaden genotype-phenotype relationships of GBA mutation carriers and 3) provide scientific knowledge regarding the longitudinal cognitive effects of DBS in GBA mutation carriers through repeated neuropsychological testing.

At present, no drug therapy has been proven to delay the progression of Parkinson's disease (PD). rTMS, as a non-invasive neuromodulation method, can regulate Slow-wave sleep (SWS). SWS is recognized closely related to neurodegeneration. However, there has been no clinical studies on if rTMS could delay the progression of PD by regulating SWS. The main purpose of this study is to explore the changes of SWS in non-rapid eye movement (NREM) sleep period in PD patients by using rTMS, and the relationship with potential improvements of SWS and motor symptom delay. The study aims to find a potential new treatment strategy to delay the neurodegenerative process in PD patients by modulating SWS by rTMS.

Resting tremors associated with Parkinson's disease (PD) remains difficult to quantify and track during disease progression. This study propose to explore the rhythmicity of distal muscle contractions in the upper limb to characterize resting tremor and discriminate it from cerebellar tremor (CT) based on the frequency spectrum of the EMG signal.

The primary objective of this proposal is to examine the efficacy of Improvised Active Music Therapy (IAMT) sessions as an early novel tool for cognitive and motor assessment for individuals with Parkinson's Disease (PD) in neurological rehabilitation. This will be achieved by identifying subtle variations in how participants play music and correlating these data with mobility and cognitive parameters. The secondary objective is to examine and understand the participants' experience of playing improvised music through post-session interviews as a qualitative measure. We propose to conduct a mixed-method, single-blinded, age-matched group comparison of 25 older adults (= 50 years) with PD and 25 healthy older adults (= 50 years) at the Conrad Institute for Music Therapy Research (CIMTR), Faculty of Music, Wilfrid Laurier University. The CIMTR laboratory contains Musical Instrument Digital Interface (MIDI) equipment/instruments and MATLAB software, which will be used to collect and analyze the music data to compare the two groups. The long-term goal is to build a database of sessions to use Improvised Active Music Therapy (IAMT) as a complementary, reliable, and feasible assessment tool to predict whether older adults with PD will progress to Parkinson's Disease Dementia (PDD) or Dementia with Lewy Bodies (DLB) and distinguish the motor phenotype as Tremor Dominant (PDTD), Mixed (PDM), or Postural Instability and Gait Disturbances (PIGD). The purpose of this project is to understand the effect of music therapy sessions on cognition and motor skills within the reciprocal improvised music interactions between music therapist and clients. Therefore, the specific objectives are as follows: To examine how physical characteristics of different neurological conditions influence music measures (note frequency, velocity of movement, synchronization, and acquisition of rhythmic complexity). To examine how music measures contribute to cognitive and motor performance. To assess the contributions of individual difference factors such as diagnoses, hand dominance, musical training, music preference, participant's personal experience, and cognitive abilities to music involvement.

General anesthesia (GA) is a medically induced state of unresponsiveness and unconsciousness, which millions of people experience every year. Despite its ubiquity, a clear and consistent picture of the brain circuits mediating consciousness and responsiveness has not emerged. Studies to date are limited by lack of direct recordings in human brain during medically induced anesthesia. Our overall hypothesis is that the current model of consciousness, originally proposed to model disorders and recovery of consciousness after brain injury, can be generalized to understand mechanisms of consciousness more broadly. This will be studied through three specific aims. The first is to evaluate the difference in anesthesia sensitivity in patients with and without underlying basal ganglia pathology. Second is to correlate changes in brain circuitry with induction and emergence from anesthesia. The third aim is to evaluate the effects of targeted deep brain stimulation on anesthesia induced loss and recovery of consciousness. This study focuses on experimentally studying these related brain circuits by taking advantage of pathological differences in movement disorder patient populations undergoing deep brain stimulation (DBS) surgery. DBS is a neurosurgical procedure that is used as treatment for movement disorders, such as Parkinson's disease and essential tremor, and provides a mechanism to acquire brain activity recordings in subcortical structures. This study will provide important insight by using human data to shed light on the generalizability of the current model of consciousness. The subject's surgery for DBS will be prolonged by up to 40 minutes in order to record the participant's brain activity and their responses to verbal and auditory stimuli.

Parkinson disease (PD) is a common disorder in which reduced speed of movement results from inadequate brain production of the chemical dopamine. The most effective treatment for PD is the drug levo-dopa, which partially replaces brain dopamine. Despite decades of successful use, how levo-dopa improves speed of movement in PD is not understood. This observational study recruits participants who have been prescribed levo-dopa by their treating physicians. Before their first dose, immediately after their first dose and later, when their dose has been stabilized, they will engage with the research team to participate in a few simple experiments to measure speed, grip strength, tremor, and stability (on and off of treatment). The purpose of these experiments is to understand how levo-dopa treatment in Parkinson disease enhances movement speed. An important but not understood component of levo-dopa action, the Long Duration Response (LDR), lasts for days to weeks. A basic function of dopamine signaling in the brain is modulation of motivation - the coupling between effort and action values. These experiments will determine if the LDR is associated with relative normalization of motivation function in the brain. The motivation behavior of recently diagnosed PD participants will be examined before and after treatment with levo-dopa to determine if the magnitude of the LDR is correlated with improvements in motivation behavior.

This is a randomized, single-blinded, triple crossover study focused on determining the feasibility of using transcranial magnetic stimulation (TMS) for treatment of Parkinson's disease related autonomic dysfunction and depression. Participants will undergo TMS to three brain regions: medial prefrontal cortex (mPFC) (experimental site), dorsolateral prefrontal cortex (DLPFC) (alternative experimental site), or primary sensory cortex (S1) (control site) in a triple crossover design. Participants will complete symptom questionnaires, neurologic examination and cognitive assessments, and orthostatic vital signs recording before and after each brain stimulation session.

Lewy body dementia (LBD) is the 2nd most common neurodegenerative dementia in the US. Optimal care requires an interdisciplinary approach, however often faced barriers include rural residence, limited access to specialists, travel distance, limited awareness of resources, and physical, cognitive, and behavioral impairments making travel to appointments challenging. Delivering interdisciplinary care remotely using video technology has the potential to improve access to care for patients with LBD.