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Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Sci+Rep 2016 ; 6 (ä): ä Nephropedia Template TP
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Neuroprotective effects of the anticancer drug NVP-BEZ235 (dactolisib) on amyloid-? 1?42 induced neurotoxicity and memory impairment #MMPMID27142962
Bellozi PMQ; Lima IVde A; Dória JG; Vieira ÉLM; Campos AC; Candelario-Jalil E; Reis HJ; Teixeira AL; Ribeiro FM; de Oliveira ACP
Sci Rep 2016[]; 6 (ä): ä PMID27142962show 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.