Active clinical trials for "Parkinson Disease"

To evaluate the potential contribution of amyloid burden, as indexed by 11C-Pittsburgh compound B (PiB) retention, to the progression of cognitive impairments in patients with Parkinson's disease(PD).

Early stage Parkinson disease (PD) is characterized by a 'honeymoon' phase in terms of responsiveness of motor symptoms, including gait, to dopaminergic pharmacotherapy. Advancing PD is associated with disabling axial motor complications, such as freezing of gait (FoG), with decreased or even refractory dopamine responsiveness in over 50% of patients. The management of dopamine resistant gait problems represents the most important unmet need in PD. This study will related detailed motor testing to brain PET imaging to see if certain molecules (or lack thereof) involved with neurologic transmission in the brain are involved with FoG.

This observational and experimental study seeks to establish a Smart Device System (SDS) to monitor high-resolution handtremor-based data using Smartphones, SmartWatches and Tablets. By doing this, movement data will be analyzed in depth with advanced statistical and Deep-Learning algorithms to identify new clinical phenotypical characteristics Parkinson's Disease and Essential Tremor.

Mental disorders have been shown to be associated with a number of general medical conditions (also referred to as somatic or physical conditions). The investigators aim to undertake a comprehensive study of comorbidity among those with treated mental disorders, by using high-quality Danish registers to provide age- and sex-specific pairwise estimates between the ten groups of mental disorders and nine groups of general medical conditions. The investigators will examine the association between all 90 possible pairs of prior mental disorders and later GMC categories using the Danish national registers. Depending on whether individuals are diagnosed with a specific mental disorder, the investigators will estimate the risk of receiving a later diagnosis within a specific GMC category, between the start of follow-up (January 1, 2000) or at the earliest age at which a person might develop the mental disorder, whichever comes later. Follow-up will be terminated at onset of the GMC, death, emigration from Denmark, or December 31, 2016, whichever came first. Additionally for dyslipidemia, follow-up will be ended if a diagnosis of ischemic heart disease was received. A "wash-out" period will be employed in the five years before follow-up started (1995-1999), to identify and exclude prevalent cases from the analysis. Individuals with the GMC of interest before the observation period will be considered prevalent cases and excluded from the analyses (i.e. prevalent cases were "washed-out"). When estimating the risk of a specific GMC, the investigators will consider all individuals to be exposed or unexposed to the each mental disorder depending on whether a diagnosis is received before the end of follow-up. Persons will be considered unexposed to a mental disorder until the date of the first diagnosis, and exposed thereafter.

Parkinson's Disease (PD) is a neurodegenerative disease characterized by chronic and progressive loss of dopaminergic neurons in the substantia nigra (SN) pars compacta. Sleep disturbances and fatigue are very common problems in Parkinson's patients. He reported that the frequency of fatigue was 47% in patients with a disease duration of less than five years and 70% in patients with a disease duration of more than five years. Fatigue in PD has been found to be associated with decreased physical activity, decreased functionality, sleep disorders, gait disturbances, motor findings, autonomic findings, increased levodopa dose, and motor fluctuations. Motor and non-motor symptoms in Parkinson's patients affect the individual's ability to perform activities of daily living independently. Impairments in functional status lead to negative consequences on quality of life. PD affects the individual not only physically, but also psychologically and socially.The neutrophil/lymphocyte ratio is a marker of peripheral inflammation. The relationship of peripheral inflammation to quality of sleep, quality of life and fatigue in individuals is unclear. The aim of this study was to investigation fatigue, quality of sleep and quality of life, and the relationship between neutrophil/lymphocyte ratio in Parkinson's patients.

This is an 8 week observational study to evaluate the feasibility of using remote monitoring technologies in future studies of PD. The study will 2 clinical evaluations (one initial, one final), and an 8-week monitoring period including 4 virtual visits where participants will use a combination of digital devices (Emerald touchless sensor system with associated ankle accelerometer, iPhone, Apple Watch, iPad, Fitbit Aria, FitBit Versa, Withings Blood Pressure Monitor Connect, and/or Withings Sleep Mat) during their daily lives.

Diagnosing Parkinson's disease (PD) depends on the clinical history of the patient and the patient's response to specific treatments such as levodopa. Unfortunately, a definitive diagnosis of PD is still limited to post-mortem evaluation of brain tissues. Furthermore, diagnosis of idiopathic PD is even more challenging because symptoms of PD overlap with symptoms of other conditions such as essential tremor (ET) or Parkinsonian syndromes (PSs) such as progressive supranuclear palsy (PSP), multiple system atrophy (MSA), corticobasal degeneration (CBD), or vascular Parkinsonism (VaP). Based on the principle that PD and PSs affect brain areas involved in eye movement control, this trial will utilize a platform that records complex eye movements and use a proprietary algorithm to characterize PSs. Preliminary data demonstrate that by monitoring oculomotor alterations, the process can assign PD-specific oculomotor patterns, which have the potential to serve as a diagnostic tool for PD. This study will evaluate capabilities of the process and its ability to differentiate PD from other PSs with statistical significance. The specific aims of this proposal are: To optimize the detection and analysis algorithms, and then to evaluate the process against neurological diagnoses of PD patients in a clinical study.

Investigators hypothesize that there are specific characteristic of each cognitive and motor condition that can be defined using brains scans.

To retrospectively investigate the relationship between the Cholinergic Pathways Hyperintensities Scale (CHIPS) score and the change of cognitive status of Parkinson's disease (PD) patients after bilateral subthalamic nucleus deep brain stimulation (STN DBS).

The Feasibility of Novel 124I-MIBG Tracer in Evaluation of Myocardial Sympathetic Denervation and Assessment of Neuroendocrine tumors. Comparison with 123I-MIBG.