View clinical trials related to Parkinson's Disease.
Filter by:Subthalamic nucleus deep brain stimulation (STN-DBS) has become a choice treatment for fluctuating Parkinson's disease (PD) patients, inducing remarkable improvement in motor symptoms. However, as PD is a complex neuropsychiatric disease, it has been hypothesized that in some patients, non-motor features, i.e. dysfunctional expectations for the result of neurosurgery, could interfere with postoperative result of DBS, even in case of motor improvement. Recent literature highlights the necessity to take these preoperative expectations into account, but to our knowledge, no specific scale investigating these cognitions in this PD-specific condition is available. So, the investigators developped the DBS-PS, a self-scale constructed to measure preoperative expectations for DBS, with 11 questions and visuo-analogical responses (1 to 10), theorically divided in three domains investigating the expectations concerning symptoms of PD, postoperative social-life and leisures, and postoperative familial and marital sphere. The investigators would like to validate this new-developped scale in the preoperative subthalamic nucleus deep brain stimulation population through patients recruited in the Predistim study, whereas the investigators did not recruite sufficiently patients through the PsyParkinson study, the one in which the DBS-PS scale was developed. The DBS-PS constitutes an interesting basis for the consideration of these cognitive and affective factors in preoperative PD patients.
To investigate the relationship between serum cystatin C and dopamine receptor(DAT) loss in patients with parkinson's disease(PD)
Increase awareness of the G2019S LRRK2 mutation in Parkinson's and no cost genetic testing program.
The purpose of the study is to evaluate the safety and tolerability after administration of multiple doses and the pharmacokinetics (PK) of single and multiple doses of UCB0599 in healthy study participants and participants with Parkinson's Disease (PD).
The purpose of the study is to evaluate the safety, tolerability, and pharmacokinetic (PK) of UCB0022 and food effect.
Parkinson's disease(PD) may cause the autonomic nervous system's improper functioning, which is responsible for regulating the intestinal tract movement. A certain degree of degeneration of digestive system function can cause PD patients to constipation symptoms. Studies have shown that up to 63 percent of people with Parkinson's disease experience constipation. What is more, medications for PD, including levodopa and dopamine agonist, can also cause constipation. In recent years, an increasing number of studies have been conducted to investigate gut microflora and their influence on the central nervous system. Furthermore, some studies of Parkinson's disease have confirmed that gut microflora plays a vital role in the occurrence and development of Parkinson's disease. The purpose of this study is to evaluate the efficacy and safety of fecal microbiota transplantation in the treatment of constipation symptoms in patients with Parkinson's disease receiving a steady dose of levodopa. We will also analyze intestinal flora diversity in patients with Parkinson's disease with constipation. The investigation of the gut microbiome may emerge as a new therapeutic measure to treat constipation associate with Parkinson's disease.
This is an open-label, non-randomized, proof-of-concept comparison of clinical vs. research stimulation patterns in patients with Parkinson's disease (PD) being treated with Deep Brain Stimulation (DBS) through the Medtronic Percept PC DBS device. The investigators hypothesize that stimulation patterns designed to better target excessive synchrony in a patient-tailored manner may result in more efficient and effective therapy with fewer side effects. Medtronic 3rd-generation sensing implantable neural stimulator, Percept PC, is FDA-approved for treating PD. The Percept PC device features BrainSense, the first and only available sensing technology for deep brain stimulation. BrainSense technology allows the device to capture and record brain signals (local field potentials, or LFP) using the brain-implanted DBS lead, while simultaneously delivering therapeutic stimulation. Investigators plan to enroll and complete investigations in 15 study subjects total, who have been previously implanted with the Medtronic Percept PC for the treatment of PD, and who are optimized for clinical stimulation and anti-Parkinsons medication. Investigations will be performed in UNMC Movement Disorders Clinic, UNMC Neurosurgery Lab, and UNO Biomechanics Research Building, Gait Lab. Subjects will receive research stimulation patterns and the effect on PD motor symptoms will be assessed via Unified Parkinsons Disease Rating Scale (UPDRS)-part III and gait measures. Videotaping of patient UPDRS-III testing and gait will be obtained.
The purpose of this study is to evaluate whether the DopaFuse System can reduce the fluctuation of plasma levodopa levels compared to participants' standard intermittent doses of oral LD/CD tablets (background treatment). It will also assess whether the system is safe, well tolerated, and can relieve motor symptoms.
Balance problems and falls are common in people with Parkinson's disease but respond poorly to dopamine stimulating medications suggesting other causes. The main goal of this study is to assess whether imbalance and gait problems in people with Parkinson's disease may be related to vestibular (inner ear balance center) changes not related to loss of dopamine in the brain.
Initially, the exploration of brain metabolism by Nuclear Magnetic Resonance Spectroscopy (MRS) of the high magnetic field proton (1H) (11.7T) applied to acute and chronic animal models of Parkinson's disease (PD) showed glutamatergic hyperactivity within the striatum, one of the components of the basal ganglia. Interestingly, acute administration of L-dopa and acute, subchronic and chronic deep brain stimulation of the subthalamic nucleus (STN) normalizes these neurochemical profiles. Investigators also show an increase in glutamate levels in the STN ipsilateral to the substantia nigra pars compacta (SNpc) damaged by the neurotoxin, expected phenomenon, but also and surprisingly in the STN controlateral to the lesion. A degeneration of dopaminergic neurons is also observed in the controlateral SNpc at the lesion suggesting that the hyperglutamatergy of the controlateral STN to the lesion could promote neuronal death in the SNpc and thus participate in the progression and lateralization of the PD. Using 3T MRS in PD patients, as in other studies in humans, investigators do not see changes in glutamate and glutamine levels in the putamen of Parkinsonian patients. This difference between animal and human studies can be explained: 1. by the different rate of progression between PD in humans and animal models with plasticity phenomena limiting glutamatergic hyperactivity, 2. by the effect of treatment in PD masking changes in glutamate metabolism, 3. by limiting sensitivity in the detection of metabolites (Glutamate, glutamine, GABA) at 3T. The 7T 1H MRS improves the dispersion of chemical shifts of the metabolites studied, increases the sensitivity of the measurement, makes it possible to select regions of interest of smaller volumes (1 cm3) and thus limits the magnetic susceptibility effects that degrade the quality of the measured signal. This makes it possible to reliably separate glutamate and glutamine peaks. In this context, investigators propose to study the metabolic changes in a homogeneous group of de novo Parkinsonian patients, naive to any treatment intended to replace the missing dopamine. The gain in spatial resolution, contrast and signal will allow better characterization of localized anomalies in small-volume structures such as basal ganglia, putamen and STN.