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Clinical Trial Summary

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.


Clinical Trial Description

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). ;


Study Design

Allocation: Non-Randomized, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Diagnostic


Related Conditions & MeSH terms


NCT number NCT02796040
Study type Interventional
Source University Hospital, Clermont-Ferrand
Contact Patrick LACARIN
Phone 04 73 75 10 81
Email placarin@chu-clermontferrand.fr
Status Recruiting
Phase N/A
Start date February 2016
Completion date August 2017

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