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Non-dopaminergic drug preladenant reduces motor fluctuations in patients with Parkinson's disease
Date:2/10/2011

similar for patients receiving preladenant and placebo.

In Parkinson's disease, the brain's dopamine-producing cells falter and die, leading to movement-related or motor symptoms such as tremors, stiffness, slowness, and balance problems.

Levodopa, a compound converted into dopamine in the brain, is still the gold standard therapy for Parkinson's, but as the disease advances this standard drug works for increasingly shorter time periods. As a result, patients begin to experience impaired movement before their next scheduled dose of medication. The re-emergence of symptoms accompanying this "off-time" can make it difficult for patients to perform even the most basic functions, such as walking and dressing. In addition, over time patients tend to develop a sensitivity to levodopa therapy during "on-time" resulting in involuntary twisting, turning movements known as dyskinesia.

Currently available drugs widely used to treat Parkinson's disease correct for the loss of the neurotransmitter dopamine either by boosting available dopamine in the brain or directly stimulating dopamine receptors. New ways to treat the disease that better address motor fluctuations without adverse side effects continue to be sought. Preladenant is a non-dopaminergic medication that targets adenosine A2A receptors in the motor control areas of the brain. It may offer advantages over dopamine medications, possibly including fewer side effects.

The clinical trial was conducted at 44 sites in 15 countries. Preladenant is an investigational medicine and is not approved for use.


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Contact: Anne DeLotto Baier
abaier@health.usf.edu
813-974-3300
University of South Florida (USF Health)
Source:Eurekalert

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