Parkinson's Disease Clinical Trial
Official title:
Exploration of Mesocorticolimbic Pathway in Impulse Control Disorders in Parkinson's Disease: Study Using Tensor Diffusion Imaging and Tractography.
Impulse control disorders (ICD) are frequent in Parkinson's Disease. Neurobiological
substrates of these symptoms are largely unknown.
The investigators aim to explore mesocorticolimbic pathway in Parkinson's disease patients
with impulse control disorders (ICD) using an MRI technique called tensor diffusion imaging
(DTI).
More precisely, the main purpose is to demonstrate that fractional anisotropy (FA) (data
obtained with DTI) in the ventral tegmental area (VTA) is different between patients with
ICD and patients without ICD. Secondary objectives are to demonstrate a difference in volume
of VTA, in FA in others structures included in reward system (prefrontal cortex, nucleus
accumbens, amygdala), and in number of fibers between VTA and the other structures of reward
system between this two groups. Other objective is to measure and compare these same
variables between Parkinson's patients and healthy controls.
We hypothesized that a denervation of mesocorticolimbic pathway predisposes Parkinson's
patients to ICD.
Type of study: Prospective, case control study.
Number of centers: 1 (Clermont-Ferrand)
Patients :
Inclusion of 25 patients with Parkinson's disease and impulse control disorders (inclusion's
criteria detailed later), 25 matched Parkinson's disease patients without impulse control
disorders and 25 healthy volunteers.
Study Performance :
J0 (inclusion; 3 hours) :
Each subject will perform a clinical and neurological examination (UPDRS) and a
neuropsychological evaluation for diagnostic and quantification of impulse control disorders
and to ensure of the absence of exclusion criteria.
J0+1week (MRI; 1hour) Each subject will then have an MRI acquisition including anatomical
sequences (T1 and T2 weighted sequences) and a diffusion tensor imaging sequence (60
directions).
Analysis Analysis (Pre-processing and processing) will be realized with the Oxford Centre
for Functional MRI of the Brain (FMRIB) Software (FSL).
;
Allocation: Non-Randomized, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Diagnostic
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