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A Dose-response Study Examining the Contribution of GLP-1 Receptor Signaling to Glucagon-stimulated Insulin Secretion

Healthy Clinical Trial

Official title:
A Dose-response Study Examining the Contribution of GLP-1 Receptor Signaling to Glucagon-stimulated Insulin Secretion

Clinical Trial Summary

The GLP-1 receptor (GLP1R) gene is found on the beta cells of the pancreas. Its role is in the control of blood sugar level by enhancing insulin secretion from the pancreas after eating a meal. The purpose of this research study is to evaluate the role of GLP1R in the response to elevated glucagon concentrations.

Clinical Trial Description

Glucagon within the islet can signal the β-cell through GLP1R, and acts as an insulin secretagogue. This signaling is blocked by exendin-9,39. The relative importance of glucagon signaling through its cognate receptor or through GLP1R is unknown. Despite the lower affinity of GLP1R for glucagon, intra-islet concentrations of glucagon are sufficiently high to stimulate GLP1R. The other situation where this may occur is in response to pharmacologic doses of glucagon as used for β-cell function testing or raising peripheral glucagon concentrations above fasting values. The experiments proposed will characterize the role of GLP1R in glucagon's actions on the β-cell and the potential therapeutic role of dual (GLP-1R and glucagon receptor) agonists for the treatment of T2DM and obesity. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT04459338
Study type Interventional
Source Mayo Clinic
Contact
Status Completed
Phase Phase 3
Start date March 4, 2021
Completion date June 14, 2022
View Details
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