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Copeptin After a Subcutaneous Stimulation With Glucagon in Adults — Glucacop  

Diabetes Insipidus Clinical Trial

Official title:
Copeptin After a Subcutaneous Stimulation With Glucagon in Adults (Healthy Volunteers and Patients With Diabetes Insipidus or Primary Polydipsia) - The Glucacop-Study

Clinical Trial Summary

This study is to evaluate copeptin values after the subcutaneous injection of glucagon in adults (healthy volunteers and patients with diabetes insipidus or primary polydipsia). It is to investigate whether glucagon stimulates the release of copeptin as a surrogate of vasopressin.

Clinical Trial Description

The differentiation between central diabetes insipidus (cDI) and primary polydipsia (PP) is cumbersome. To date the test with the highest diagnostic accuracy is copeptin measurement after hypertonic saline Infusion. Instead of hypertonic saline Infusion, arginine infusion - known to stimulate growth hormone - is a potent stimulator of the neurohypophysis and provides a new diagnostic tool in the differential diagnosis of cDI. Copeptin measurements upon arginine stimulation discriminated patients with diabetes insipidus vs. patients with primary polydipsia with a high diagnostic accuracy of 94%. Glucagon has been shown to stimulate GH-secretion. In analogy to the known stimulatory effect of arginine Infusion it is hypothesized that glucagon might stimulate the posterior pituitary gland and could therefore be a novel diagnostic test in the polyuria-polydipsia syndrome. This study is to evaluate copeptin values after the subcutaneous injection of glucagon in adults (healthy volunteers and patients with diabetes insipidus or primary polydipsia). This study is planned as a double-blind randomized-controlled cross-over trial consisting of two parts, including healthy adults (study part 1 - proof of concept) and adults with known diagnosis of cDI or PP (study part 2 - pilot study). Study parts 1 and 2 will be conducted consecutively. If the results of study part 1 suggest that glucagon is a potent stimulator of Copeptin in healthy adults, study part 2 will be conducted. Participants will receive glucagon injection and placebo injection in random order. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT04550520
Study type Interventional
Source University Hospital, Basel, Switzerland
Contact
Status Completed
Phase N/A
Start date September 28, 2020
Completion date May 30, 2021
View Details
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