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Glucagon Response to Prandial Insulin Administration in Persons With Type 1 Diabetes

NCT04079881 · Status: TERMINATED · Phase: PHASE1/PHASE2 · Type: INTERVENTIONAL · Enrollment: 1

Last updated 2022-10-07

Study results available
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Summary

Glucagon regulation and response in persons with T1D at the basal state and in response to various stimuli remains unclear. Dr. Philip Cryer has previously reported that, in T1D young adults with a course of the disease of 16+9 years, the absence of endogenous insulin secretion results in increased glucagon secretion after a mixed meal, concluding that endogenous insulin reciprocally regulates the alpha-cell glucagon secretion and also suggesting that glucagon dysregulation may play an important role in post-prandial hyperglycemia in T1D. Interestingly, recent research on human islets have shown that insulin inhibits counter-regulatory glucagon secretion by a paracrine effect mediated by SGLT2-dependent stimulation of somatostatin release. An important gap in our knowledge is whether the timing of prandial insulin doses affects the glucagon response to a hyperglycemic stimulus in patients with T1D who have undetectable C-peptide.

Whether appropriately timed exogenous insulin can modify the glucagon response to glucose fluctuations has not been studied. As such, this pilot study aims to characterize the glucagon response to meal-time hyperglycemia and to compare the difference in glucagon secretion when mealtime bolus insulin is given before the meal versus after the meal with the objective of understanding factors that contribute to the peak post-prandial blood glucose and AUC of blood glucose after a mixed meal in this target population.

Conditions

Interventions

DRUG

Insulin

to give pre-prandial and post-prandial insulin (will use patient insulin dose patient use at home) to patients with T1D and evaluate the response of post-prandial glucagon and post-prandial hyperglycemia.

Sponsors & Collaborators

  • Washington University School of Medicine

    lead OTHER

Principal Investigators

  • Janet McGill, MD · Wash. Univ. School of Medicine

Study Design

Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
NONE
Model
CROSSOVER

Eligibility

Min Age
18 Years
Max Age
90 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2020-02-13
Primary Completion
2020-07-01
Completion
2020-07-01
FDA Drug
Yes

Countries

  • United States

Study Locations

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Entities

Drugs
Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04079881 on ClinicalTrials.gov