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Deprecated: Implicit conversion from float 247.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Sci+Rep 2015 ; 5 (ä): ä Nephropedia Template TP
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Osmotin attenuates amyloid beta-induced memory impairment, tau phosphorylation and neurodegeneration in the mouse hippocampus #MMPMID26118757
Ali T; Yoon GH; Shah SA; Lee HY; Kim MO
Sci Rep 2015[]; 5 (ä): ä PMID26118757show ga
The pathological hallmarks of Alzheimer?s disease (AD) include amyloid beta (A?) accumulation, neurofibrillary tangle formation, synaptic dysfunction and neuronal loss. In this study, we investigated the neuroprotection of novel osmotin, a plant protein extracted from Nicotiana tabacum that has been considered to be a homolog of mammalian adiponectin. Here, we observed that treatment with osmotin (15??g/g, intraperitoneally, 4?hr) at 3 and 40 days post-intracerebroventricular injection of A?1-42 significantly ameliorated A?1-42-induced memory impairment in mice. These results revealed that osmotin reverses A?1-42 injection-induced synaptic deficits, A? accumulation and BACE-1 expression. Treatment with osmotin also alleviated the A?1-42-induced hyperphosphorylation of the tau protein at serine 413 through the regulation of the aberrant phosphorylation of p-PI3K, p-Akt (serine 473) and p-GSK3? (serine 9). Moreover, our western blots and immunohistochemical results indicated that osmotin prevented A?1-42-induced apoptosis and neurodegeneration in the A?1-42-treated mice. Furthermore, osmotin attenuated A?1-42-induced neurotoxicity in vitro.To our knowledge, this study is the first to investigate the neuroprotective effect of a novel osmotin against A?1-42-induced neurotoxicity. Our results demonstrated that this ubiquitous plant protein could potentially serve as a novel, promising, and accessible neuroprotective agent against progressive neurodegenerative diseases such as AD.