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Molecules 2016, 21(5), 548; doi:10.3390/molecules21050548

Neuroprotective Effects of Biochanin A against β-Amyloid-Induced Neurotoxicity in PC12 Cells via a Mitochondrial-Dependent Apoptosis Pathway

1
Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
2
Institute of Bioscience, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia
*
Author to whom correspondence should be addressed.
Academic Editor: Peter Koulen
Received: 14 March 2016 / Revised: 20 April 2016 / Accepted: 22 April 2016 / Published: 25 April 2016
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Abstract

Alzheimer’s disease is considered one of the major neurodegenerative diseases and is characterized by the production of β-amyloid (Aβ) proteins and progressive loss of neurons. Biochanin A, a phytoestrogen compound found mainly in Trifolium pratense, was used in the present study as a potential alternative to estrogen replacement therapy via the investigation of its neuroprotective effects against Aβ25–35-induced toxicity, as well as of its potential mechanisms of action in PC12 cells. Exposure of these cells to the Aβ25–35 protein significantly increased cell viability loss and apoptosis. However, the effects induced by Aβ25–35 were markedly reversed in the present of biochanin A. Pretreatment with biochanin A attenuated the cytotoxic effect of the Aβ25–35 protein by decreasing viability loss, LDH release, and caspase activity in cells. Moreover, we found that expression of cytochrome c and Puma were reduced, alongside with the restoration of Bcl-2/Bax and Bcl-xL/Bax ratio in the presence of biochanin A, which led to a decrease in the apoptotic rate. These data demonstrate that mitochondria are involved in the protective effect of biochanin A against Aβ25–35 and that this drug attenuated Aβ25–35-induced PC12 cell injury and apoptosis by preventing mitochondrial dysfunction. Thus, biochanin A might raise a possibility as a potential therapeutic agent for Alzheimer’s disease and other related neurodegenerative diseases. View Full-Text
Keywords: biochanin A; beta-amyloid; apoptosis; PC12 cells; mitochondrial dysfunction; Alzheimer’s disease biochanin A; beta-amyloid; apoptosis; PC12 cells; mitochondrial dysfunction; Alzheimer’s disease
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Tan, J.W.; Kim, M.K. Neuroprotective Effects of Biochanin A against β-Amyloid-Induced Neurotoxicity in PC12 Cells via a Mitochondrial-Dependent Apoptosis Pathway. Molecules 2016, 21, 548.

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