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- W2169467555 abstract "Early symptoms of Alzheimer's disease (AD) have been attributed to amyloid-β (Aβ) toxicity. The pathophysiology of AD is complex and involves several different biochemical pathways, including defective Aβ protein metabolism, neuroinflammation, oxidative processes, and mitochondrial dysfunction. In the current study, we assessed the molecular mechanisms, mainly the modifications in the activity of mitochondrial complexes, whereby the association of folic acid and α-tocopherol protects mice against the Aβ-induced neurotoxicity. Oral treatment with folic acid (50 mg/kg) plus α-tocopherol (500 mg/kg), once a day during 14 consecutive days, protected mice against the Aβ₁₋₄₀-induced cognitive decline, synaptic loss, and neuronal death. However, chronic treatment comprising folic acid plus α-tocopherol was ineffective on Aβ-induced glial cell activation, suggesting that the effect of this treatment is independent of anti-inflammatory features. Interestingly, the results obtained in our study suggest that mitochondrial energy metabolism is impaired by the Aβ peptide, and upregulation of mitochondrial genes may be a compensatory response, as demonstrated by the increase in mitochondrial complexes I, II, and IV activity, in the hippocampus of mice, after Aβ₁₋₄₀ injection. Of note, the chronic treatment comprising folic acid plus α-tocopherol prevented the increase in the activity of mitochondrial complexes I and IV induced by Aβ₁₋₄₀. Together, these results show the antioxidant effect of the combination of folic acid and α-tocopherol, as observed by the decrease in NO generation from iNOS and nNOS, preventing an increase in the activity of mitochondrial complexes, mainly I and IV, and the neuronal death induced by the Aβ₁₋₄₀ peptide." @default.
- W2169467555 created "2016-06-24" @default.
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- W2169467555 date "2011-03-29" @default.
- W2169467555 modified "2023-10-02" @default.
- W2169467555 title "Folic Acid Plus α-Tocopherol Mitigates Amyloid-β-Induced Neurotoxicity through Modulation of Mitochondrial Complexes Activity1" @default.
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- W2169467555 doi "https://doi.org/10.3233/jad-2010-101320" @default.
- W2169467555 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/21157027" @default.
- W2169467555 hasPublicationYear "2011" @default.
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