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Pitt researchers using mathematics to target Parkinson's disease symptoms
Date:11/9/2011

PITTSBURGH -- University of Pittsburgh mathematicians have been collaborating with Pitt's School of Medicine to find ways to stop the symptoms of Parkinson's disease, thanks in part to a four-year, $1.86 million grant from the National Science Foundation (NSF) and a five-year $1.2 million grant from the National Institutes of Health (NIH). The NSF grant began in 2007 and has funded a number of research projects within Pitt's Department of Mathematics; the NIH grant is in its first year.

Pitt mathematicians, working with neurobiology researchers, are using computational models, experiments, and analysis of models and data to study the way that signals are transferred between the basal ganglia, a collection of nuclei found in the brain that helps with motor control, and the thalamus, its downstream target in the brain. Although scientists can't yet prevent the cell death associated with Parkinson's, their study of mathematical patterns could guide the development of less invasive treatments that block the motor symptoms of the disease.

"For Parkinson's patients, there are more spurts and pauses in neural activity, and the firing of groups of neurons becomes more coordinated, leading to tremor and other symptoms," said Jonathan Rubin, Pitt professor of mathematics and one of the principal investigators on the project. "The neuronal activity is like a woodpecker knocking on a tree outside your window; it distracts you when it first starts pecking, and then the silence grabs your attention when the pecking suddenly stops. Similarly, the starts and stops in the neuronal activity can become disruptive to signal processing in the brain."

Rubin said this firing pattern may be what leads those with Parkinson's to experience shaking, rigid muscles, and difficulty in making quick movements. Currently, if side effects of drug treatments become too strong, surgeons fight these symptoms with deep brain stimulation (DBS), an aggressive but commonly
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Contact: B. Rose Huber
rhuber@pitt.edu
412-624-4356
University of Pittsburgh
Source:Eurekalert

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