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Breast cancer drug shows promise against serious infections
Date:7/20/2009

An FDA-approved drug used for preventing recurrence of breast cancer shows promise in fighting life-threatening fungal infections common in immune-compromised patients, such as infants born prematurely and patients with cancer. Some scientists suspected that tamoxifen has antifungal properties; now new research from the University of Rochester Medical Center shows that it actually kills fungus cells and stops them from causing disease.

"It's still early, but if tamoxifen, or molecules like it, turns out to be an effective treatment against serious fungal infections, it'll be a welcome addition to our arsenal," said Damian Krysan, M.D., Ph.D., author of the research recently published in the journal Antimicrobial Agents and Chemotherapy and assistant professor of Pediatrics at the University of Rochester Medical Center .

While serious fungal infections are generally isolated to patients with cancer, patients in intensive care units, patients with HIV or patients taking immune-suppression medications for chronic conditions, they are among the deadliest infections. Fungus is the third most common cause of blood stream infection in premature infants in the neonatal intensive care unit. The survival rate for children with acute lymphoblastic leukemia is about 95 percent, but if they acquire a Candida albicans fungal infection, that drops to 80 percent. Bacterial meningitis has a 5 percent risk of death, but the risk of death for C. albicans blood stream infection is 20 percent.

Tamoxifen is given to prevent breast cancer from returning. It is given orally, and often for months at a time. Scientists had known that tamoxifen has anti-fungal properties in test tubes, but it was Krysan and his team, including Melanie Wellington, M.D., Ph.D., assistant professor of Pediatrics, that found that it kills yeast in mice with Candida infections. This is a crucial step toward developing tamoxifen or structurally related molecules for us
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Contact: Heather Hare
heather_hare@urmc.rochester.edu
585-273-2840
University of Rochester Medical Center
Source:Eurekalert

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