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Biosynthetic grape-derived compound prevents progression of Alzheimer's disease in mice
Date:5/2/2012

Mount Sinai School of Medicine researchers have succeeded in developing a biosynthetic polyphenol that improves cognitive function in mice with Alzheimer's disease (AD). The findings, published in a recent issue of the Journal of Neuroscience, provide insight in determining the feasibility of biosynthetic polyphenols as a possible therapy for AD in humans, a progressive neurodegenerative disease for which there is currently no cure.

Polyphenols, which occur naturally in grapes, fruits, and vegetables, have been shown to prevent the cognitive decline associated with AD in a mouse model, but the molecules are very complex and are extensively metabolized in the body. This is the first study to determine which specific subfraction of these molecules penetrates the animal brain, and demonstrate that a drug compound similar to polyphenols can exert similar bioactivities.

A research group led by Giulio Maria Pasinetti, MD, PhD, Saunders Family Professor and Chair in Neurology at Mount Sinai School of Medicine, has been exploring the application of specific grape-derived polyphenols for the treatment of AD. Previously, this group found that certain grape-seeds extracts, comprised of a complex mixture of naturally occurring polyphenols, were capable of lessening cognitive deterioration and reducing brain neuropathology in an animal model of AD, but they did not know how to manipulate the natural extract into a pharmaceutical compound that could be used by the brain.

"My team, along with many members of the scientific community, did not know how we could harness the efficacy of naturally occurring polyphenols in food for treatment of Alzheimer's disease," Dr. Pasinetti said. "We were skeptical that these naturally occurring polyphenols would reach the brain because they are extensively metabolized following ingestion."

The researchers separated the natural occurring polyphenols from grapes, sorted them by size, and administere
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Contact: Mount Sinai Press Office
newsmedia@mssm.edu
212-241-9200
The Mount Sinai Hospital / Mount Sinai School of Medicine
Source:Eurekalert

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