NDLI: Atorvastatin ameliorates cognitive impairment, Aβ1-42 production and Tau hyperphosphorylation in APP/PS1 transgenic mice

Content Provider	Springer Nature Link
Author	Zhou, Dongsheng Liu, Huaxia Li, Chenli Wang, Fangyan Shi, Yaosheng Liu, Lingjiang Zhao, Xin Liu, Aiming Zhang, Junfang Wang, Chuang Chen, Zhongming
Copyright Year	2016
Abstract	Amyloid-beta (Aβ) interacts with the serine/threonine protein kinase AKT (also known as protein kinase B)/glycogen synthase kinase 3β (GSK3β) pathway and deactivates GSK3β signaling, which result in microtubule protein tau phosphorylation. Atorvastatin, a HMG-CoA reductase inhibitor, has been proven to improve learning and memory performance, reduce Aβ and phosphorylated tau levels in mouse model of Alzheimer’s disease (AD). However, it still remains unclear whether atorvastatin is responsible for regulation of AKT/GSK3β signaling and contributes to subsequent down-regulation of Aβ1-42 and phosphorylated tau in APP/PS1 transgenic (Tg APP/PS1) mice. Herein, we aimed to investigate the possible impacts of atorvastatin (10 mg/kg, p.o.) on the memory deficit by behavioral tests and changes of AKT/GSK3β signaling in hippocampus and prefrontal cortex by western blot test in Tg APP/PS1 mice. The results showed that treatment with atorvastatin significantly reversed the memory deficit in the Tg APP/PS1 mice in a novel object recognition and the Morris water maze tests. Moreover, atorvastatin significantly attenuated Aβ1-42 accumulation and phosphorylation of tau (Ser396) in the hippocampus and prefrontal cortex of Tg APP/PS1 mice. In addition, atorvastatin treatment also increased phosphorylation of AKT, inhibited GSK3β activity by increasing phosphorylation of GSK3β (Ser9) and decreasing the beta-site APP cleaving enzyme 1 (BACE1) expression. These results indicated that the memory ameliorating effect of atorvastatin may be, in part, by regulation the AKT/GSK3β signaling which may contribute to down-regulation of Aβ1-42 and tau hyperphosphorylation.
Starting Page	693
Ending Page	703
Page Count	11
File Format	PDF
ISSN	08857490
Journal	Metabolic Brain Disease
Volume Number	31
Issue Number	3
e-ISSN	15737365
Language	English
Publisher	Springer US
Publisher Date	2016-02-16
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Alzheimer’s disease Beta amyloid Tau AKT/GSK3β signaling Beta -site APP cleaving enzyme 1 Atorvastatin Neurosciences Neurology Metabolic Diseases Biochemistry Oncology
Content Type	Text
Resource Type	Article
Subject	Biochemistry Neurology (clinical) Cellular and Molecular Neuroscience

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