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2016 ; 6
(ä): 25226
Nephropedia Template TP
gab.com Text
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English Wikipedia
Neuroprotective effects of the anticancer drug NVP-BEZ235 (dactolisib) on
amyloid-? 1-42 induced neurotoxicity and memory impairment
#MMPMID27142962
Bellozi PM
; Lima IV
; Dória JG
; Vieira ÉL
; Campos AC
; Candelario-Jalil E
; Reis HJ
; Teixeira AL
; Ribeiro FM
; de Oliveira AC
Sci Rep
2016[May]; 6
(ä): 25226
PMID27142962
show ga
Alzheimer's Disease (AD) is a progressive neurodegenerative disease and the main
cause of dementia. Substantial evidences indicate that there is over-activation
of the PI3K/Akt/mTOR axis in AD. Therefore, the aim of the present study was to
investigate the effects of NVP-BEZ235 (BEZ; dactolisib), a dual PI3K/mTOR
inhibitor that is under phase I/II clinical trials for the treatment of some
types of cancer, in hippocampal neuronal cultures stimulated with amyloid-? (A?)
1-42 and in mice injected with A? 1-42 in the hippocampus. In cell cultures, BEZ
reduced neuronal death induced by A?. BEZ, but not rapamycin, a mTOR inhibitor,
or LY294002, a PI3K inhibitor that also inhibits mTOR, reduced the memory
impairment induced by A?. The effect induced by A? was also prevented in
PI3K?(-/-) mice. Neuronal death and microgliosis induced by A? were reduced by
BEZ. In addition, the compound increased IL-10 and TNF-? levels in the
hippocampus. Finally, BEZ did not change the phosphorylation of Akt and p70s6K,
suggesting that the involvement of PI3K and mTOR in the effects induced by BEZ
remains controversial. Therefore, BEZ represents a potential strategy to prevent
the pathological outcomes induced by A? and should be investigated in other
models of neurodegenerative conditions.