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Brain Abnormalities in Parkinson's Patients Develop Before Symptoms Occur, According to Feinstein Scientists
Date:1/23/2010

Scientists who have identified brain networks damaged in Parkinson’s disease have new evidence that these systems become abnormal a few years before symptoms appear. And what’s more, parts of the network appear to respond in a last ditch attempt to rescue the brain.

Manhasset, NY (Vocus) January 22, 2010 -- Scientists who have identified brain networks damaged in Parkinson's disease have new evidence that these systems become abnormal a few years before symptoms appear. And what's more, parts of the network appear to respond in a last ditch attempt to rescue the brain.

"We were surprised," said Chris Tang, MD, PhD, a Parkinson's investigator at The Feinstein Institute for Medical Research in Manhasset, NY, and an author of the study, published this month in the Journal of Neuroscience. The Feinstein scientists have been following people with Parkinson's disease for decades. They have had a unique opportunity to take snapshots of the brain over the course of four years in 15 patients and an equal number of normal volunteers. The group initially identified two discrete abnormal networks, one that was involved in mediating the motor symptoms of Parkinson's disease, and the other that regulates the cognitive dysfunction that develops in many patients with this illness.

Symptoms of Parkinson's disease initially occur on one side of the body, which provided scientists with a unique opportunity to study the brain scans at multiple times and compare the symptoms to changes in the brain networks over time. The idea for the latest study was to watch the activity of the network on the side of the brain that controls the side of the body that's free of symptoms. As the disease progresses, both sides of the body
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Brain Abnormalities in Parkinson's Patients Develop Before Symptoms Occur, According to Feinstein Scientists
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