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- W1979467063 abstract "Animals and humans respond to starvation with a complex neuroendocrine response that ultimately leads to an increase in appetite, a sparing of lean body mass (LBM) and burning of fat, and an overall decrease in basal metabolic rate. In contrast, cachexia is a pathological state of malnutrition associated with many infections and chronic diseases, wherein appetite is diminished concomitant with an increase in metabolic rate, and a relative wasting of LBM. In previous studies, we demonstrated that anorexia and weight loss in mouse cachexia models induced by lipopolysaccharide (LPS) administration and by tumor growth are ameliorated by central melanocortin-4 (MC4) receptor (MC4-R) blockade. In contrast to the results seen with MC4 blockade, melanocortin-3 (MC3) receptor knockout (MC3-RKO) mice show illness-induced anorexia and weight loss with LPS administration and with cytokine administration, and they have similar decreases in mobility. Both MC3-RKOs and MC4-RKOs have an intact corticosterone response and fever with LPS injection. In tumor models, we show that MC4-RKO mice resist the loss of LBM brought about by tumor growth, whereas MC3-RKO animals show enhanced tissue wasting. These data underscore the importance of central melanocortin signaling in weight homeostasis and demonstrate differential effects of MC3-R and MC4-R blockade on the development of cachexia." @default.
- W1979467063 created "2016-06-24" @default.
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- W1979467063 date "2003-04-01" @default.
- W1979467063 modified "2023-09-30" @default.
- W1979467063 title "Differential Role of Melanocortin Receptor Subtypes in Cachexia" @default.
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- W1979467063 doi "https://doi.org/10.1210/en.2002-221099" @default.
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