The Effects of Glucagon on Hepatic Metabolism in People With Type 2 Diabetes After Caloric Restriction
Caloric restriction (and RYGB) improves insulin action and lowers fasting glucose, glucagon and EGP, without changes in postprandial EGP and glucagon concentrations. Caloric restriction also improves hepatic steatosis and lowers fasting AA. These changes may represent restoration of glucagon's hepatic actions. This experiment will determine whether caloric restriction improves glucagon's actions on hepatic amino acid, carbohydrate and lipid metabolism in T2DM in comparison to a baseline experiment performed…
Conditions studied
Type2diabetes
About this study
Caloric restriction (and RYGB) improves insulin action and lowers fasting glucose, glucagon and EGP, without changes in postprandial EGP and glucagon concentrations. Caloric restriction also improves hepatic steatosis and lowers fasting AA. These changes may represent restoration of glucagon's hepatic actions. This experiment will determine whether caloric restriction improves glucagon's actions on hepatic amino acid, carbohydrate and lipid metabolism in T2DM in comparison to a baseline experiment performed separately in people with T2DM.
Interventions
- Behavioral: Caloric Restriction — Subjects will be instructed to consume a diet of 900 kcal daily using meals derived from "Nutritional Guidelines after Bariatric Surgery". Compliance will be monitored by weekly meetings with the dietician using an electronic record of food intake
- Drug: Hyperglycemic clamp — Hyperglycemic clamp to measure the effect of glucagon on hepatic metabolism
Primary outcomes
- Rate of leucine oxidation in response to rising glucagon concentrations (240 minutes of study)
Eligibility information
Study locations
- Mayo Clinic in Rochester, Rochester, Minnesota 55905 United States
Source: ClinicalTrials.gov. Record last refreshed by Varda Clinical: 2026-09-27.