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  • 1 Semmelweis Egyetem, Általános Orvostudományi Kar II. Belgyógyászati Klinika Budapest Szentkirályi u. 46. 1088
  • 2 Eötvös Loránd Tudományegyetem, Pedagógiai és Pszichológiai Kar Pszichológiai Intézet Budapest
  • 3 Semmelweis Egyetem, Általános Orvostudományi Kar Orvosi Vegytani, Molekuláris Biológiai és Patobiokémiai Intézet Budapest
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A cukorbetegség a kognitív hanyatlás kockázatát hozzávetőleg másfélszeresére növeli. Az eddigi adatok többsége alátámasztja, hogy a kognitív funkciók számos területe károsodhat a cukorbetegség következményeként. Az 1-es típusú cukorbetegek esetében a pszichomotoros teljesítmény, az információfeldolgozás, a mentális rugalmasság, a figyelmi funkció és a vizuális érzékelés lehet érintett. A 2-es típusú cukorbetegek esetében memóriazavarról, a pszichomotoros sebesség és végrehajtási funkciók sérüléséről számoltak be. A cukorbetegség központi idegrendszert érintő konkrét patofiziológiai változásai nem teljesen tisztázottak. Jelentősséggel bír a cukorbetegség kialakulásának ideje, a szénhidrát-anyagcsere állapota és az egyéb szövődmények jelenléte. A cukorbetegség neurológiai következményei az agy öregedési folyamatához hasonló képet mutatnak. A cukorbetegséget illetően a képalkotó vizsgálatok strukturális agyi elváltozásokat, corticalis és subcorticalis atrophiát, fokozott leukoaraiosist mutattak ki. Számos hipotézis bizonyítékokkal alátámasztva magyarázatul szolgálhat a cukorbetegség következményeként kialakuló kognitív hanyatlásra. A legfőbb feltevések hátterében a következő mechanizmusok feltételezhetőek: hyperglykaemia, hypoglykaemia, microvascularis elváltozások, inzulinrezisztencia, hyperinsulinismus, tau-fehérje hiperfoszforilációja és az amilod-β-lerakódás. Orv. Hetil., 2012, 153, 323–329.

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