Journal
PROCEEDINGS OF THE NUTRITION SOCIETY
Volume 67, Issue 2, Pages 238-252Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0029665108007088
Keywords
flavonoids; cognitive performance; memory
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Funding
- Biotechnology and Biological Sciences Research Council [BB/F008953/1, BB/C518222/1] Funding Source: researchfish
- Medical Research Council [G0400278] Funding Source: researchfish
- BBSRC [BB/F008953/1] Funding Source: UKRI
- MRC [G0400278] Funding Source: UKRI
- Biotechnology and Biological Sciences Research Council [BB/C518222/1, BB/F008953/1] Funding Source: Medline
- Medical Research Council [G0400278/NI02, G0400278] Funding Source: Medline
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Emerging evidence suggests that dietary-derived flavonoids have the potential to improve human memory and neuro-cognitive performance via their ability to protect vulnerable neurons, enhance existing neuronal function and stimulate neuronal regeneration. Long-term potentiation (LTP) is widely considered to be one of the major mechanisms underlying memory acquisition, consolidation and storage in the brain and is known to be controlled at the molecular level by the activation of a number of neuronal signalling pathways. These pathways include the phosphatidylinositol-3 kinase/protein kinase B/Akt (Akt), protein kinase C, protein kinase A, Ca-calmodulin kinase and mitogen-activated protein kinase pathways. Growing evidence suggests that flavonoids exert effects on LTP, and consequently memory and cognitive performance, through their interactions with these signalling pathways. Of particular interest is the ability of flavonoids to activate the extracellular signal-regulated kinase and the Akt signalling pathways leading to the activation of the cAMP-response element-binding protein, a transcription factor responsible for increasing the expression of a number of neurotrophins important in LTP and long-term memory. One such neurotrophin is brain-derived neurotrophic factor, which is known to be crucial in controlling synapse growth, in promoting an increase in dendritic spine density and in enhancing synaptic receptor density. The present review explores the potential of flavonoids and their metabolite forms to promote memory and learning through their interactions with neuronal signalling pathways pivotal in controlling LTP and memory in human subjects.
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