Insulin resistance is a hallmark feature of type 2 diabetes and obesity. In addition to the classical view that insulin resistance in the liver, muscle and fat disrupts glucose homeostasis, studies in the past decade have illustrated that insulin resistance in the hypothalamus dysregulates hepatic glucose production and food intake, leading to type 2 diabetes and obesity. This invited review argues that in addition to the hypothalamus, insulin signalling in the dorsal vagal complex regulates hepatic glucose production and food intake. A thorough understanding of the physiological and pathophysiological mechanisms of insulin action in the hypothalamus and dorsal vagal complex is necessary in order to identify therapeutic targets for obesity and type 2 diabetes.
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http://dx.doi.org/10.1113/expphysiol.2014.079962 | DOI Listing |
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