Un gruppo internazionale di ricerca coordinato dall'università di San Diego, California, è riuscito per la prima volta a riparare lesioni nel midollo spinale dei topi usando cellule staminali. Il risultato dello studio è stato pubblicato lunedì sulla rivista Nature Medicine.
Finora nessuna terapia ha permesso di ripristinare il funzionamento di un particolare circuito nervoso che è presente anche nel corpo umano e che rappresenta la principale via deputata al controllo dei movimenti.
Si tratta di una prima assoluta, spiegano gli autori della ricerca, precisando che la rigenerazione ha riguardato il cosiddetto fascio corticospinale, che nell'uomo va dalla corteccia cerebrale al midollo spinale. "Abbiamo usato cellule staminali neurali per verificare se potessero supportarne la rigenerazione e, con nostra grande sorpresa, ne sono state capaci", ha spiegato il coordinatore della ricerca, Mark Tuszynski, che ha subito ammonito: "c'è ancora molto lavoro da fare prima di pensare ad una sperimentazione sulle persone".
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