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Mushroom-derived compound lengthens survival in dogs with cancer, Penn Vet study finds
Date:9/10/2012

PHILADELPHIA Dogs with hemangiosarcoma that were treated with a compound derived from the Coriolus versicolor mushroom had the longest survival times ever reported for dogs with the disease. These promising findings offer hope that the compound may one day offer cancer patients human and canine alike a viable alternative or complementary treatment to traditional chemotherapies.

The study was conducted by two University of Pennsylvania School of Veterinary Medicine faculty. Dorothy Cimino Brown is professor and chair of the Department of Clinical Studies and director of the Veterinary Clinical Investigation Center. Jennifer Reetz is an attending radiologist in the Department of Clinical Studies. They published their findings in an open-access article in the journal Evidence-Based Complementary and Alternative Medicine.

The Coriolus versicolor mushroom, known commonly as the Yunzhi mushroom, has been used in traditional Chinese medicine for more than 2,000 years. The compound in the mushroom that is believed to have immune-boosting properties is polysaccharopeptide, or PSP. In the last two decades, some studies have suggested that PSP also has a tumor-fighting effect.

"There have been a series of studies looking at groups of people with cancer," Cimino Brown said. "The issue with those studies is that they weren't necessarily measuring what most people would think is the most clinically important result, which is, do people taking PSP live longer?"

To address this critical question, Cimino Brown and Reetz pursued a study in dogs with naturally occurring hemangiosarcoma, an aggressive, invasive cancer that arises from the blood cells and typically affects the spleen. It commonly strikes golden retrievers and German shepherds.

Fifteen dogs that had been diagnosed with hemangiosarcoma participated in the trial. Divided into three groups of five, each group received a different dose 25, 50 or 100 mg/kg/day of
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Contact: Katherine Unger Baillie
kbaillie@upenn.edu
215-898-9194
University of Pennsylvania
Source:Eurekalert

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