Saliva and Extracellular Vesicles for Parkinson's Disease

Inclusion Criteria: For Pakinson's disease: diagnosis following "MDS clinical diagnostic criteria for Parkinson's disease" (Postuma et al. Movement Disorders vol. 30 1591-1601, 2015), with Hoehn\&Yahr between 1 and 3. The diagnosis of Progressive Supranuclear Palsy will be made according to the criteria of the Movement Disorders Society (Höglinger et al. Mov. Disord. 32, 853-864, 2017). The diagnosis of Corticobasal Syndrome will be made according to the 2013 Armstrong criteria (Armstrong et al. Neurology 80, 496-503, 2013). The diagnosis of multiple system atrophy will be made according to the Gilman criteria of The diagnosis of Behavior Disorder in REM phase will be made according to the criteria of the "International Classification of Sleep Disorders, Third Edition (ICSD-3)". Exclusion Criteria: For all the experimental groups considered and for healthy controls, subjects with concomitant chronic and / or inflammatory diseases of the oral cavity, other systemic diseases (eg anemia, cardiovascular or respiratory diseases), oncological or infectious diseases will be excluded. Vascular parkinsonisms, monogenic parkinsonisms will also be excluded as well as iatrogenic parkinsonisms, parkinsonisms secondary to exposure to known neurotoxins; parkinsonisms secondary to tumor lesions; parkinsonisms due to normotensive hydrocephalus; subjects with a form of dementia, severe speech disorders and other psychiatric and / or neurological pathologies.