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Cocoa extract may counter specific mechanisms of Alzheimer's disease
Date:6/23/2014

(NEW YORK June 23) A specific preparation of cocoa-extract called Lavado may reduce damage to nerve pathways seen in Alzheimer's disease patients' brains long before they develop symptoms, according to a study conducted at the Icahn School of Medicine at Mount Sinai and published June 20 in the Journal of Alzheimer's Disease (JAD).

Specifically, the study results, using mice genetically engineered to mimic Alzheimer's disease, suggest that Lavado cocoa extract prevents the protein β-amyloid- (Aβ) from gradually forming sticky clumps in the brain, which are known to damage nerve cells as Alzheimer's disease progresses.

Lavado cocoa is primarily composed of polyphenols, antioxidants also found in fruits and vegetables, with past studies suggesting that they prevent degenerative diseases of the brain.

The Mount Sinai study results revolve around synapses, the gaps between nerve cells. Within healthy nerve pathways, each nerve cell sends an electric pulse down itself until it reaches a synapse where it triggers the release of chemicals called neurotransmitters that float across the gap and cause the downstream nerve cell to "fire" and pass on the message.

The disease-causing formation of Aβ oligomers groups of molecules loosely attracted to each other build up around synapses. The theory is that these sticky clumps physically interfere with synaptic structures and disrupt mechanisms that maintain memory circuits' fitness. In addition, Aβ triggers immune inflammatory responses, like an infection, bringing an on a rush of chemicals and cells meant to destroy invaders but that damage our own cells instead.

"Our data suggest that Lavado cocoa extract prevents the abnormal formation of Aβ into clumped oligomeric structures, to prevent synaptic insult and eventually cognitive decline," says lead investigator Giulio Maria Pasinetti, MD, PhD, Saunders Family Chair and Professor
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Contact: Elizabeth Dowling
newsmedia@mssm.edu
212-241-9200
The Mount Sinai Hospital / Mount Sinai School of Medicine
Source:Eurekalert

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