New ways in which GLP-1 can regulate glucose homeostasis

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Abstract
Glucagon-like peptide–1 (GLP-1) has a diverse set of peripheral actions which all serve to promote enhanced glucose tolerance, and for this reason it has become the basis for new treatments for type 2 diabetes. In this issue of the JCI, Knauf et al. provide clear evidence that GLP-1 signaling in the CNS is also linked to the control of peripheral glucose homeostasis by inhibiting non–insulin-mediated glucose uptake by muscle and increasing insulin secretion from the pancreas. The authors’ work points to an important need to integrate diverse GLP-1 signaling actions and peripheral GLP-1 function in order to better understand both normal and abnormal glucose homeostasis.

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