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• W2077263712 abstract "Abstract The potential neuroprotective properties of fruits have been widely recognized. In this study, we evaluated the protective properties of a blueberry extract (BB‐4), rich in polyphenols, in a neurodegenerative model induced by amyloid‐β peptide (Aβ). Chronic treatment with Aβ drastically reduced synaptic transmission and the extent of secretory vesicles, which were recovered partially with BB‐4. Also, the extract recovered Ca 2+ transients in hippocampal neurons preincubated with Aβ (0.5 and 5 μM) by about 25% ± 3% and 30% ± 2, respectively. In this work, we demonstrate a novel effect of the BB‐4 extract on Aβ‐induced ATP leakage, in which this extract was able to antagonize the acute ATP leakage but not chronic ATP depletion. On the other hand, BB‐4 prevented the uncoupling of mitochondrial function induced by FCCP by about 85%, but it was unable to modify the uncoupling induced by Aβ. The present results strongly indicate that BB‐4 plays a role in the process of Aβ aggregation by reducing the toxic species (i.e., 40 kDa). These findings suggest that a blueberry extract can protect neuronal tissue from Aβ toxicity mainly through its antiaggregation property, and its antioxidant properties and mitochondrial membrane potential capacities are secondary mechanisms important in chronic stages. Our work suggests that BB‐4 could be an important nutritional complement to neuronal health as well as a potential nutraceutical formulation useful as a dietary supplement in the elderly. © 2011 Wiley‐Liss, Inc." @default.
• W2077263712 created "2016-06-24" @default.
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• W2077263712 date "2011-06-06" @default.
• W2077263712 modified "2023-10-18" @default.
• W2077263712 title "Synaptic failure and adenosine triphosphate imbalance induced by amyloid-β aggregates are prevented by blueberry-enriched polyphenols extract" @default.
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• W2077263712 doi "https://doi.org/10.1002/jnr.22679" @default.
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