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Parkinson's disease stopped in animal model
Date:3/2/2012

Millions of people suffer from Parkinson's disease, a disorder of the nervous system that affects movement and worsens over time. As the world's population ages, it's estimated that the number of people with the disease will rise sharply. Yet despite several effective therapies that treat Parkinson's symptoms, nothing slows its progression.

While it's not known what exactly causes the disease, evidence points to one particular culprit: a protein called α-synuclein. The protein, which has been found to be common to all patients with Parkinson's, is thought to be a pathway to the disease when it binds together in "clumps," or aggregates, and becomes toxic, killing the brain's neurons.

Now, scientists at UCLA have found a way to prevent these clumps from forming, prevent their toxicity and even break up existing aggregates.

UCLA professor of neurology Jeff Bronstein and UCLA associate professor of neurology Gal Bitan, along with their colleagues, report the development of a novel compound known as a "molecular tweezer," which in a living animal model blocked α-synuclein aggregates from forming, stopped the aggregates' toxicity and, further, reversed aggregates in the brain that had already formed. And the tweezers accomplished this without interfering with normal brain function.

The research appears in the current online edition of the journal Neurotherapeutics.

There are currently more than 30 diseases with no cure that are caused by protein aggregation and the resulting toxicity to the brain or other organs, including Parkinson's, Alzheimer's and Type 2 diabetes. It is therefore critical, Bronstein said, to find a way to stop this aggregation process. Over the last two decades, researchers and pharmaceutical companies have attempted to develop drugs that would prevent abnormal protein aggregation, but so far, they have had little or no success.

While these aggregates are a natural
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Contact: Mark Wheeler
mwheeler@mednet.ucla.edu
310-794-2265
University of California - Los Angeles
Source:Eurekalert

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