Cited by 456Alzheimer's disease research and treatmentsMedicinal Plants and NeuroprotectionDementia and Cognitive Impairment Research

Flavonoids, cognition, and dementia: Actions, mechanisms, and potential therapeutic utility for Alzheimer disease

Williams, Robert J., Spencer, Jeremy P.E.·2012·Free Radical Biology and Medicine

Abstract

There is increasing evidence that the consumption of flavonoid-rich foods can beneficially influence normal cognitive function. In addition, a growing number of flavonoids have been shown to inhibit the development of Alzheimer disease (AD)-like pathology and to reverse deficits in cognition in rodent models, suggestive of potential therapeutic utility in dementia. The actions of flavonoid-rich foods (e.g., green tea, blueberry, and cocoa) seem to be mediated by the direct interactions of absorbed flavonoids and their metabolites with a number of cellular and molecular targets. For example, their specific interactions within the ERK and PI3-kinase/Akt signaling pathways, at the level of receptors or kinases, have been shown to increase the expression of neuroprotective and neuromodulatory proteins and increase the number of, and strength of, connections between neurons. Concurrently, their effects on the vascular system may also lead to enhancements in cognitive performance through increased brain blood flow and an ability to initiate neurogenesis in the hippocampus. Additional mechanisms have been suggested for the ability of flavonoids to delay the initiation of and/or slow the progression of AD-like pathology and related neurodegenerative disorders, including a potential to inhibit neuronal apoptosis triggered by neurotoxic species (e.g., oxidative stress and neuroinflammation) or disrupt amyloid β aggregation and effects on amyloid precursor protein processing through the inhibition of β-secretase (BACE-1) and/or activation of α-secretase (ADAM10). Together, these processes act to maintain the number and quality of synaptic connections in key brain regions and thus flavonoids have the potential to prevent the progression of neurodegenerative pathologies and to promote cognitive performance.

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Crossref · 10.1016/j.freeradbiomed.2011.09.010

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221 of 221 references verified0 citation errors · 0 not checkable

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  • BACE performs proteolysis by generating soluble APPβ and CTFβ; CTFβ undergoes γ-secretase proteolysis to generate toxic Aβ neuropeptides with 40-43 amino acids, finally causing the amyloid plaques characteristic of Alzheimer's disease.

    “This protein known as the BACE performs proteolysis by generating a soluble fragment in the extracellular space known as “soluble APPβ” and an additional fragment bound to the plasma membrane, CTFβ peptide that undergoes proteolysis yet again by γ-secretase to generate toxic neuropeptides Aβ with 40–43 amino acids, finally causing the amyloid plaques characteristic of AD [165,166,167].”

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Authors
Williams, R. J., & Spencer, J. P. E.
Affiliations
  • University of Bath (GB)
  • University of Reading (GB)
Corresponding author
Spencer, Jeremy P.E.
Venue
Free Radical Biology and Medicine
Publisher
Elsevier BV
Published
2012-01
Volume
52
Issue
1
Pages
35-45
ISSN
0891-5849 (ISSN-L)
OpenAlex
W2000424893
Cited by
448
References
222
Citations by year
2026: 11 · 2025: 17 · 2024: 28 · 2023: 16 · 2022: 36 · 2021: 34 · 2020: 36 · 2019: 38 · 2018: 34 · 2017: 42 · 2016: 34 · 2015: 37 · 2014: 36 · 2013: 33 · 2012: 15
FWCI
2.91
Type
journal article
Language
en
Open access
closed
Locations
  • Free Radical Biology and Medicine (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Alzheimer's Society
  • Biotechnology and Biological Sciences Research Council (BB/G005702/1, BB/E023185/1, BB/F008953/1)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Complementary and alternative medicine › Medicinal Plants and Neuroprotection
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
Keywords
flavonoids, Alzheimer's disease, dementia, flavonoid-rich foods, green tea, blueberry, Theobroma cacao, flavonoid metabolites, ERK signaling, PI3K/Akt signaling, neuroprotection, neurogenesis, hippocampus, cerebral blood flow, neuronal apoptosis, oxidative stress, neuroinflammation, amyloid-beta aggregation, APP processing, BACE1, ADAM10, synaptic connectivity, cognitive function, neurodegeneration
MeSH terms
Alzheimer Disease, Animals, Brain, Cognition, Enzyme Activation, Flavonoids, Humans, Neurons, Signal Transduction, Gene Expression, Amyloid beta-Peptides, Phosphatidylinositol 3-Kinases, Mitogen-Activated Protein Kinase 1, Mitogen-Activated Protein Kinase 3, Proto-Oncogene Proteins c-akt, Mice, Rats, Amyloid Precursor Protein Secretases, Neurogenesis

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