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J Neurosci. 2008 Jun 18;28(25):6388-92. doi: 10.1523/JNEUROSCI.0364-08.2008.

Grape-derived polyphenolics prevent Abeta oligomerization and attenuate cognitive deterioration in a mouse model of Alzheimer's disease.

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  • 1Department of Psychiatry, Mount Sinai School of Medicine, New York, New York 10029, USA.

Abstract

Alzheimer's disease (AD) is a neurodegenerative disorder characterized by progressive impairments in memory and cognition. Extracellular accumulation of soluble high-molecular-weight (HMW) Abeta oligomers has been proposed to be largely responsible for AD dementia and memory deficits in the Tg2576 mice, a model of AD. In this study, we found that a naturally derived grape seed polyphenolic extract can significantly inhibit amyloid beta-protein aggregation into high-molecular-weight oligomers in vitro. When orally administered to Tg2576 mice, this polyphenolic preparation significantly attenuates AD-type cognitive deterioration coincidentally with reduced HMW soluble oligomeric Abeta in the brain. Our study suggests that grape seed-derived polyphenolics may be useful agents to prevent or treat AD.

PMID:
18562609
[PubMed - indexed for MEDLINE]
PMCID:
PMC2806059
Free PMC Article

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