New Drugs for Fox Tapeworm Infection

by Sheela Philomena on  May 22, 2012 at 10:01 AM Drug News
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Scientists are testing a series of novel drugs that could inhibit fox tapeworm infections in humans. The report, which appears in ACS' Journal of Medicinal Chemistry, shows that specific organometallic substances that help combat cancer are also the surprising best new hope for a treatment against tapeworm infection.
 New Drugs for Fox Tapeworm Infection
New Drugs for Fox Tapeworm Infection

Carsten Vock, Andrew Hemphill and colleagues explain that alveolar echinococcosis (AE) is a parasitic disease caused by the fox tapeworm Echinococcus multilocularis. Although rare, AE disease results in the death of about 94 percent of patients worldwide within 10-20 years of diagnosis if not treated appropriately. Most infections occur in the Northern hemisphere, in places like central Asia, northwestern China, and parts of Japan and Europe. People become infected from eating food contaminated with the parasite's eggs, which are found in the feces of infected foxes, cats or dogs. Surgery is the best option for AE patients, but it does not always remove all of the parasites. Current AE drugs do not cure the disease, but simply keep the parasites at bay. These medicines must be taken life-long. In AE patients, the tapeworms cause tumor-like growths, which can metastasize or spread to different parts of the body. This reminded the researchers of cancer, so they looked at whether ruthenium complexes, promising anti-cancer agents, could also treat tapeworm.

The group prepared and evaluated several ruthenium complexes as potential drugs against the fox tapeworm. Some were effective in killing the tapeworms and also were less toxic on normal cells in laboratory dish tests, making them prime candidates for further development as treatments for AE.

Source: Eurekalert

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