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Article Publish Status: FREE
Abstract Title:

Neuroprotective effects of apigenin against inflammation, neuronal excitability and apoptosis in an induced pluripotent stem cell model of Alzheimer's disease.

Abstract Source:

Sci Rep. 2016 ;6:31450. Epub 2016 Aug 12. PMID: 27514990

Abstract Author(s):

Rachelle Balez, Nicole Steiner, Martin Engel, Sonia Sanz Muñoz, Jeremy Stephen Lum, Yizhen Wu, Dadong Wang, Pascal Vallotton, Perminder Sachdev, Michael O'Connor, Kuldip Sidhu, Gerald Münch, Lezanne Ooi

Article Affiliation:

Rachelle Balez

Abstract:

Alzheimer's disease (AD) is one of the most prevalent neurodegenerative diseases, yet current therapeutic treatments are inadequate due to a complex disease pathogenesis. The plant polyphenol apigenin has been shown to have anti-inflammatory and neuroprotective properties in a number of cell and animal models; however a comprehensive assessment has not been performed in a human model of AD. Here we have used a human induced pluripotent stem cell (iPSC) model of familial and sporadic AD, in addition to healthy controls, to assess the neuroprotective activity of apigenin. The iPSC-derived AD neurons demonstrated a hyper-excitable calcium signalling phenotype, elevated levels of nitrite, increased cytotoxicity and apoptosis, reduced neurite length and increased susceptibility to inflammatory stress challenge from activated murine microglia, in comparison to control neurons. We identified that apigenin has potent anti-inflammatory properties with the ability to protect neurites and cell viability by promoting a global down-regulation of cytokine and nitric oxide (NO) release in inflammatory cells. In addition, we show that apigenin is able to protect iPSC-derived AD neurons via multiple means by reducing the frequency of spontaneous Ca(2+) signals and significantly reducing caspase-3/7 mediated apoptosis. These data demonstrate the broad neuroprotective action of apigenin against AD pathogenesis in a human disease model.

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Sayer Ji
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