Studiul coordonat de Profesorul Ted Abel a fost realizat pe şoareci şi oamenii de ştiinţă au constatat că atunci când cobaii dorm mai puţin, în hipocampul lor (circuit cerebral crucial pentru procesele de învaţare şi memorie), cresc nivelurile enzimei PDE4 şi scad cele ale unei molecule extrem de importante pentru memorizarea de noi informaţii, denumite cAMP.
Atunci însă când neurologii au restabilit experimental condiţiile moleculare normale ale hipocampului, reducând nivelurile de PDE4, cele ale enzimei cAMP au crescut, iar şoarecii nu au mai resimţit nici un efect al lipsei de somn, conservandu-şi capacitatile normale de învăţare.
Cercetătorii americani cred că se poate crea şi pentru oameni un medicament capabil să regleze concentraţia de PDE4, astfel încât odihna atât de necesară organismului uman să fie înlocuită de o capsulă.
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