Active clinical trials for "Parkinson Disease"

The current study is designed to test the hypothesis that targeted electrical stimulation will result in upper limb tremor reduction in ET and PD patients.

The PET tracer Fluoro-ethyl-methyl-amino-naphthyl-ethylidene-malononitrile ([F18]-FDDNP) has a specific affinity for lesions containing tau protein and beta-amyloid The study consists of two phases In a first transversal phase, 8 neurologically unimpaired controls, 15 patients with PD and no dementia (PDND) and 8 with PD and dementia (PDD) will undergo lumbar puncture for study of tau, phospho-tau and beta-amyloid levels in cerebrospinal fluid (CSF), as well as positron emission tomography (PET) with ([F18]-FDDNP. Concentration of CSF markers and both the degree and topography of FDDNP-PET uptake will be compared among groups, along with correlation analysis between CSF and PET findings. During the second phase (18 months follow-up), the PDND patients will undergo the same procedures, and cognitive changes including incident dementia will be assessed. The correlation between cognitive impairment and neurochemical and neuroimaging changes will be established to determine the predictive value of these markers. Since the pathological lesions observed in Alzheimer disease (AD) are common in the PD and the concentrations of tau and beta-amyloid are altered in AD and PET with [F18]-FDDNP is able to separate patients with AD and cognitive impairment from controls, we hypothesized that: - Patients with PD will show a biomarkers profile similar to the AD (decreased levels of beta-amyloid and increased phospho-tau and tau) in CSF, and an abnormal uptake of [F18]-FDDNP PET compared to PDND patients and controls. -The distribution of cortical [F18]-FDDNP in the PD will be different from the AD and similar to dementia with Lewy bodies, predominantly in posterior cortical areas. PDND patients will show a [F18]-FDDNP PET uptake and levels of protein markers in CSF intermediate between controls and patients with PD. -In the subsequent follow-up, PDND patients will show cognitive impairment correlate to changes in the levels of protein markers in CSF and uptake of PET with [F18]-FDDNP - The predictive value for the development of dementia in PD of specific patterns of PET uptake and CSF proteins profile will be established.

The primary objective of this protocol is to analyze the sensitivity and specificity of 18F-DTBZ PET to the differential diagnosis of Parkinson's Disease (PD) and normality. Secondary, the investigators will analyze the correlation between the 18F-DTBZ binding and the severity of disease of PD and the role of 18F-DTBZ PET in the monitoring disease severity.

The aim of this trial is to verify that neurostimulated parkinsonian patients gain weight and to study its link with an energetic balance change.

Study participants who have been clinically diagnosed with Parkinson disease will receive no treatment, treatment with either levodopa, or treatment with Mirapex for a period of 12 weeks. Over the course of the study subjects will travel to the Institute for Neurodegenerative Disorders (IND) in New Haven, Connecticut for brain imaging.

Historically, participation in clinical studies is highly skewed towards particular demographic groups of people. This study will invite several participants to gather a wide range of information on clinical trial experiences for Parkinson's Disease patients. The aim of the study is to identify the factors that limit the ability of a person to enroll in, as well as complete a clinical trial for treatment of Parkinson's Disease. The data collected from this study will help improve future outcomes for all Parkinson's Disease patients as well as those in under-represented demographic groups.

20 patients with idiopathic Parkinson's disease, who are planned to undergo intestinal L-Dopa + entacapone (Lecigon®) treatment will be included into this observational single-armed study. These patient will be observed for hyperdopaminergic complications and neuropsychiatric fluctuations postprocedure at 3, 6 and 12 months.

BioGenParkinson is an observational, prospective cohort study evaluating biomarkers of Parkinson's Disease (PD) progression in community-dwelling subjects aged 65 years or more, consecutively referring to INRCA outpatient clinic of the Neurology Unit. Selected patients will undergo clinical and laboratory evaluations at the baseline, and will be followed up after 6 and 12 months. The biological evaluation will include the determination of i) routine biological parameters ii) advanced biomarkers such as epigenetic analysis of DNA methylation, genetic analysis on multiple loci associated with PD progression and specific proteins associated with motor and non-motor decline. After obtaining all data, multiple statistical analysis will be performed to evaluate the most accurate prognostic biomarkers of PD progression at this stage of disease.

Study Purpose: Parkinson's disease leads to severally impaired motor control. The purpose of this study is to better understand and analyze the characteristics of arm muscle activity while doing some reaching tasks and of leg muscles while walking. This will allow the investigators to improve understanding of the mechanisms underlying the motor impairments in Parkinson's disease.

In France, an estimated 860 000 patients are affected by Alzheimer Disease (AD) which represents, as in other developed countries, a major public health issue. In many cases, AD diagnosis is uncertain and its clinical evolution unpredictable. The exactitude of the diagnosis is however particularly important in the perspective of the validation and use of new therapeutic strategies in AD. Detection of cerebrospinal fluid (CSF) diagnosis biomarkers fell short in the detection, of atypical/mixed cases, of some differential diagnosis, and in differentiating rapid or slow clinical evolutions. Hence, CSF analysis gives a unique opportunity to detect and validate biomarkers in many neurological disorders. Nevertheless, in medical practice, CSF biological analysis is currently limited to a small number of analytes.Quantitative and targeted mass spectrometry, especially operated in the Multiple reaction monitoring mode (MRM), represents an alternative to immunodetection and could be used to detect specific biomarkers in complex matrices such as plasma by specifically discriminating the proteotypic peptides corresponding to each proteins. Mass spectrometry has also the ability to distinguish and quantify isotopically labelled and unlabeled selected targets. This ability was used in a publication by the group of R. Bateman (Washington University, St Louis, USA) who could, after administering stable isotope-labelled leucine, evaluate Ab synthesis and clearance in humans. This approach has an enormous potential to study the metabolism of proteins within the human CNS and consequently help in the understanding and diagnosis of neurological disorders.The main objective of this program is set up a targeted quantitative mass spectrometry method for existing and stable isotope-labelled CSF biomarkers in the neurological field; exploit this approach for diagnostic purpurses and to gain knowledge in the pathophysiology of diseases.