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[Cancer Research 61, 1432-1438, February 15, 2001]
© 2001 American Association for Cancer Research


Endocrinology

Role of the Central Melanocortin System in Cachexia1

Daniel L. Marks, Nicholas Ling and Roger D. Cone2

Department of Pediatric Endocrinology [D. L. M.], Vollum Institute [R. D. C.], Oregon Health Sciences University, Portland, Oregon 97201, and Neurocrine Biosciences, Inc. [N. L.], San Diego, California

Individuals affected with either acute or chronic diseases often show disorders of nutrient balance. In some cases, a devastating state of malnutrition known as cachexia arises, brought about by a synergistic combination of a dramatic decrease in appetite and an increase in metabolism of fat and lean body mass. Stimulation of the hypothalamic melanocortin 4 receptor (MC4-R) produces relative anorexia and increased metabolic rate, even in a relatively starved state. Here we demonstrate that cachexia induced by lipopolysaccharide administration and by tumor growth is ameliorated by central MC4-R blockade. MC4-R knock-out mice or mice administered the MC3-R/MC4-R antagonist, agouti-related peptide, resist tumor-induced loss of lean body mass, and maintain normal circadian activity patterns during tumor growth. The final tumor mass is not affected in these animals, providing further support for the potential role of MC4-R antagonism in the treatment of cachexia in disease states.




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HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Cancer Research Clinical Cancer Research
Cancer Epidemiology Biomarkers & Prevention Molecular Cancer Therapeutics
Molecular Cancer Research Cancer Prevention Research
Cancer Prevention Journals Portal Cancer Reviews Online
Annual Meeting Education Book Meeting Abstracts Online
Copyright © 2001 by the American Association for Cancer Research.