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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

Role of hypothalamic interleukin-1beta (IL-1beta) in regulation of energy homeostasis by melanocortins.

In the current study we sought to determine whether hypothalamic IL-1beta is regulated by melanocortin signaling and if melanocortin-induced changes in energy balance are dependent on IL-1beta. A melanocortin agonist, MTII, increased hypothalamic IL-1beta mRNA levels by two-fold, whereas a melanocortin antagonist, SHU9119, blunted lipopolysaccharide (LPS)-mediated increase of hypothalamic IL-1beta content. Pharmacological or genetic disruption of IL-1 receptor signaling prevented MTII-mediated reductions in locomotor activity, but did not reduce MTII-induced anorexia. These data suggest a potential role for central melanocortins in mediating the decrease of ambulation characteristic of the 'sickness' response.[1]

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