💬In plain words
What the trial is, and whether it could suit you
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 lesio
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📋 Eligibility rules (as published)
Inclusion Criteria:
Patients will be included:
* suffering from idiopathic Parkinson's disease according to UKPDSBB criteria (Gibb \& Lees, 1988; Hughes et al., 1992),
* the stage of the disease is I-II according to the Hoehn and Yahr scale,
* which do not receive dopaminergic treatment,
* duration of disease development 5 years,
* without major cognitive impairment (Moca \> 24)
* men or women aged 18 to 75,
* having understood and signed the informed consent form,
* members of a social security scheme.
Controls:
* subjects male or female aged 18 -75 years
* subjects affiliated to a social security scheme.
* volunteers who have given their written consent.
Exclusion Criteria:
Patients will be excluded:
* having a severe tremor (\> 3 for a trembling sub-item of UPDRS 3) making the MR examination impossible,
* patients with "contra-indications" to an MRI exam (without administration of a gadolinium chelate): presence of metal parts in the body (electronic devices such as a pacemaker, a neurostimulator, a cochlear implant, prostheses, etc.), claustrophobia,
* taking any treatment that may interact with brain concentrations of neurotransmitters, such as all psychotropic drugs and in particular antidepressants, neuroleptics, benzodiazepines, antiepileptics,
* pregnant women,
* treated by deep brain neurostimulation,
* patients under guardianship or guardianship or protection of justice,
* patients who are excluded from another study.
Controls:
* persons suffering from progressive neurological and psychiatric pathology,
* persons with "contra-indications" to an MRI examination (without administration of a gadolinium chelate): presence of metal parts in the body (electronic devices such as a pacemaker, a neurostimulator, a cochlear implant, prostheses, etc.), claustrophobia,
* taking any treatment that may interact with brain concentrations of neurotransmitters, such as: all psychotropic drugs and in particular antidepressants, neuroleptics, benzodiazepines, antiepileptics,
* pregnant women,
* persons under guardianship or trusteeship or protection of justice,
* people who are excluded from another study.
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