Alváshiány hajtja az Alzheimer fehérjéjét
Szemlézte: Pöltz Ágnes
2018.01.05. 16:46
A krónikus alváshiány is összefüggésbe hozható a kognitív leépüléssel, amit a Washington Egyetem orvosi karának munkatársai azzal magyaráznak, hogy az éjszaka ébren lévő agy többet állít elő a béta-amiloid fehérjéből, mint amennyitől a szervezet meg tud szabadulni. Ezt a proteint sokszor csak Alzheimer-fehérjeként emlegetik - írja a Medicalxpress.
Amikor növekszik a béta-amiloid mennyisége, olyan változások történhetnek az agyban, ami a végén demenciát, időskori elbutulást eredményezhet. Tisztán látszik, hogy az alvászavar az Alzheimer kialakulásának kockázatát növeli - írta tanulmányában a vezető szerző Randall Bateman professzor. A publikáció az az Annals of Neurology című tudományos lapban jelent meg.
A kísérletben az alvásmegvonással küszködő emberekben 25-30 százalékkal több béta-amiloidot mutattak ki, mint aztoknál, akik rendesen végigaludták az éjszakát. Ez a fehérjeszint megegyezett azzal, amit az Alzheimer fiatalkori kialakulására genetikailag hajlamos embernél tapasztaltak.
Néhány kialvatlan éjszaka, az esetekénti bulizások miatt nem igazán kell aggódni, mutattak rá a tudósok, akik sokkal inkább a krónikus és tartós alváshiánnyal küdző emberekre fókuszáltak a kutatásukban.
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