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OHSU scientists test medication to treat involuntary weight loss

PORTLAND, Ore. Scientists at Oregon Health & Science University, in collaboration with Neurocrine Biosciences Inc., have successfully tested a research medication that both stimulates appetite and reduces metabolic rate in preclinical trials. Neurocrine, which developed the test medication for this research, is now developing a related medication that will likely be tested in patients suffering from a common, disease-related form of malnutrition and involuntary weight loss called cachexia. The results of the research are published in the current online edition of the journal Endocrinology.

"We've all seen AIDS and cancer patients who lose their appetites and suffer from involuntary weight loss. They lose muscle mass and become very frail as their disease progresses -- this is what we refer to as cachexia," explains Daniel Marks, M.D., Ph.D., a member of the OHSU Center for Weight Regulation and Associated Disorders and an assistant professor of pediatric endocrinology in the OHSU School of Medicine. "Cachexia is a very serious and currently untreatable disorder that can often impede the battle against the related disease. For instance, cancer patients who are malnourished due to cachexia cannot undergo intense chemotherapy simply because their bodies are too frail to handle it. If we can prevent cachexia and keep these patients from deteriorating physically, it gives them a greater chance of surviving the disease they are fighting."

This latest research breakthrough is based on earlier studies that demonstrated how a receptor on certain brain cells -- called the MC4 receptor -- can influence metabolism and appetite. Previous research involving mice demonstrated that when this specific cell receptor is blocked by delivering medications directly to the brain, the effects of cachexia are reversed. The animals' appetite and weight increase while their metabolic rate decreases. The next step in the research process, and the goal of this study, wa
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Contact: Jim Newman
newmanj@ohsu.edu
503 494-8231
Oregon Health & Science University
29-Mar-2005


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