Abstract

Muscle wasting is a hallmark of uremic cachexia and has frequently been attributed to malnutrition that manifests as anorexia in chronic kidney disease. However, recent evidence indicates that proteolytic mechanisms are responsible for atrophy. Cheung and colleagues have reexamined the links between loss of lean body mass and nutrition. They demonstrate that neuropeptide signaling pathways, which regulate appetite and energy expenditure, also affect expression of key proteins involved in muscle mass maintenance.

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