Category: Liraglutide Weight Loss

Identification of weight loss-mediating liraglutide targets

The type 2 diabetes drug liraglutide is a glucagon-like peptide-1 receptor (GLP-1R) agonist that lowers blood glucose and reduces body weight. Liraglutide is being investigated for use as a treatment for obesity; however, the mechanism of action underlying the associated weight loss is not clear. In this episode, Lotte Bjerre Knudsen and colleagues reveal that liraglutide mediates weight loss via neurons in the arcuate nucleus. GLP-1R signaling activated centrally projecting neurons that express proopiomelanocortin and cocaine- and amphetamine-regulated transcript (POMC/CART neurons), which regulate appetite and are activated by leptin and insulin. Liraglutide also inhibited neuropeptide Y-expressing neurons, which enhance appetite. The results of this study provide important insight into how liraglutide mediates weight loss.
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