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Researchers closing in on safe treatment for parasitic diseases
Date:7/8/2011

EAST LANSING, Mich. With the help of another $2 million in funding from the Bill & Melinda Gates Foundation, researchers are moving closer to setting up human clinical trials for a reformulated drug that could be the linchpin of treatment efforts against two debilitating tropical diseases.

Charles Mackenzie, a professor of veterinary pathology in Michigan State University's College of Veterinary Medicine, and his colleagues are looking to flubendazole, a drug tested first in the 1980s to treat the filarial disease river blindness (onchocerciasis).

The disease, in which the skin and eyes are infected with parasitic worms, afflicts about 40 million people worldwide, much of its damage in equatorial Africa. River blindness is spread by black flies, and after the parasitic worms die in a person's eye, it can cause blindness and debilitating skin disease.

Another filarial disease, elephantiasis (lymphatic filariasis), is caused by tiny worms in the vascular system and is spread via mosquitoes. It results in severe swelling of the legs, arms and torso, and the physical deformities and disabilities cause tremendous psychological problems and economic hardship to millions of people in most of the tropical regions of the world.

Researchers are focusing treatment efforts on flubendazole, a drug used in the 1980s with good results against adult filarial worms when it was injected in animals and humans. However, the injections caused severe local reactions and the drug formulation at that time gradually lost effectiveness. Mackenzie and colleagues are now reformulating the drug to develop new ways to safely administer it.

"Although flubendazole faces important challenges with regard to safety, the potential benefits that could result relatively quickly from a safe, usable formulation make this a top priority for the filarial world today," he said.

With the new funding, Mackenzie and his team will continue to resea
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Contact: Jason Cody
codyja@msu.edu
517-432-0924
Michigan State University
Source:Eurekalert  

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