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New Research from SRI International Points to Biomarker that Could Track Huntington's Disease Progression
Date:7/9/2013

plained 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 disease process."

EEG has shown promise as an indicator of underlying brain dysfunction in neurodegenerative diseases, which otherwise occurs surreptitiously until symptoms appear. Until now, most investigations of EEG in patients with neurodegenerative diseases and in animal models of neurodegenerative diseases have shown significant changes in EEG patterns only after disease symptoms occurred.

"Our breakthrough is that we have found an EEG signature that appears to be a biomarker for the presence of disease in this mouse model of Huntington's disease that can identify early changes in the brain prior to the onset of behavioral symptoms," said Morairty, the paper's senior author. "While the current study focused on Huntington's disease, many neurodegenerative diseases produce changes in the EEG that are associated with the degenerative process. This is the first step in being able to use the EEG to predict both the presence and progression of neurodegenerative diseases."

Although previous studies have shown there are distinct and extensive changes in EEG patterns in Alzheimer's and Huntington's disease patients, researchers are looking for changes that may occur decades before disease onset.

Huntington's disease is an inherited disorder that causes certain nerve cells in the brain to die, resulting in motor dysfunction, cognitive decline and psychiatric symptoms. It is the only major neurodegenerative disease where the cause is known with certainty: a genetic mutation that produces a change in a protein that is toxic to neurons.

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