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Research points to biomarker that could track Huntington's disease progression
Date:7/8/2013

MENLO PARK, Calif.July 8, 2013A hallmark of neurodegenerative diseases such as Alzheimer's, Parkinson's and Huntington's is that by the time symptoms appear, significant brain damage has already occurredand currently there are no treatments that can reverse it. A team of SRI International researchers has demonstrated that measurements of electrical activity in the brains of mouse models of Huntington's disease could indicate the presence of disease before the onset of major symptoms. The findings, "Longitudinal Analysis of the Electroencephalogram and Sleep Phenotype in the R6/2 Mouse Model of Huntington's Disease," are published in the July 2013 issue of the neurology journal Brain, published by Oxford University Press.

SRI researchers led by Stephen Morairty, Ph.D., a director in the Center for Neuroscience in SRI Biosciences, and Simon Fisher, Ph.D., a postdoctoral fellow at SRI, used electroencephalography (EEG), a noninvasive method commonly used in humans, to measure changes in neuronal electrical activity in a mouse model of Huntington's disease. Identification of significant changes in the EEG prior to the onset of symptoms would add to evidence that the EEG can be used to identify biomarkers to screen for the presence of a neurodegenerative disease. Further research on such potential biomarkers might one day enable the tracking of disease progression in clinical trials and could facilitate drug development.

"EEG signals are composed of different frequency bands such as delta, theta and gamma, much as light is composed of different frequencies that result in the colors we call red, green and blue," explained Thomas Kilduff, Ph.D., senior director, Center for Neuroscience, SRI Biosciences. "Our research identified abnormalities in all three of these bands in Huntington's disease mice. Importantly, the activity in the theta and gamma bands slowed as the disease progressed, indicating that we may be tracking the underlying diseas
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Contact: Dina Basin
dina.basin@sri.com
650-859-3845
SRI International
Source:Eurekalert

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