Alzheimer e Parkinson hanno la stessa origine?
Secondo una recente ricerca dell’Istituto di Scienze e Tecnologie della Cognizione del Cnr (Consiglio Nazionale delle Ricerche) pubblicata sulla rivista scientifica “Ibro Neuroscience Reports” la malattia di Alzheimer e la malattia di Parkinson scaturirebbero entrambe dallo stesso meccanismo di degenerazione del cervello per poi differenziarsi in un secondo momento. I ricercatori hanno chiamato tale meccanismo Nes, cioè Neurodegenerative elderly syndrome (Sindrome neurodegenerativa dell’anziano). In particolare, le due patologie avrebbero entrambe origine dal primo dei tre stadi della Nes, in cui si verifica una notevole riduzione del numero di neuroni che producono serotonina e noradrenalina, a cui però non corrisponde la comparsa di alcun sintomo. Non è caratterizzata da alcun sintomo evidente nemmeno il secondo stadio della Nes. Nel terzo, se a essere maggiormente danneggiata è l’area tegmentale ventrale del cervello si sviluppa la malattia di Alzheimer, mentre se è più danneggiata la substantia nigra pars compacta si sviluppa la malattia di Parkinson. (foto www.pixabay.com)
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