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Learn MoreThe cancer anorexia cachexia syndrome is a systemic metabolic disorder characterized by the catabolism of stored nutrients in skeletal muscle and adipose tissue that is particularly prevalent in non-small cell lung cancer (NSCLC). Loss of skeletal muscle results in functional impairments and increased mortality. The aim of the current study was to characterize the changes in systemic metabolism in a genetically engineered mouse model of NSCLC. We show that a portion of these animals develop loss of skeletal muscle, loss of adipose tissue, and increased inflammatory markers mirroring the human cachexia syndrome. Using non-cachexic and fasted animals as controls, we report a unique cachexia metabolite phenotype that includes the dependent ketone production by the liver. In this setting, glucocorticoid levels rise and correlate with skeletal muscle degradation and hepatic markers of gluconeogenesis. Restoring prevents the loss of skeletal muscle mass and body weight. These results demonstrate how targeting hepatic metabolism can prevent muscle wasting in lung cancer, and provide evidence for a novel therapeutic strategy. SOURCE: Charles Murphy (murphy.charlesj@gmail.com) - Weill Cornell Medicine
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