Incretin Hormones in Type-1 Diabetes Mellitus Glycemic Response in Type-1 Diabetes Mellitus

January 29, 2009 updated by: Hvidovre University Hospital

Secretion and Significance of the Incretin Hormones on the Postprandial Glycemic Response in Type-1 Diabetes Mellitus

The purpose of this study is to investigate whether secretion of incretin hormones is intact and to what extent endogenous as well as exogenous GLP-1 controls postprandial glucose excursions in patients with type-1 diabetes mellitus.

Study Overview

Status

Completed

Conditions

Detailed Description

GLP-1 and GIP are incretin hormones secreted from specific endocrine celles in the gut. Stimulus for secretion is prescence of carbohydrates, fat and protein in the gut. The incretin hormones controls postprandial glucose excursions through stimulation of insulinsecretion as well as inhibition of glucagon and gastric emptying.The effects of GLP-1 on insulin secretion and glucagon inhibition are glucose dependent and the risc of hypoglycemia is therefore negligible when the hormone is administered in supra physiological concentrations.Furthermore, some animal studies suggest that GLP-1 has a trofic effect on the betacells and the hormone has been shown to replenish intracellular stores of insulin. Because the main bloodglucose lowering effect of GLP-1 has been thought to be due to increased insulin secretion, analouges of the hormone has been developed for the treatment of type-2 diabetes. So far, relatively little is known about the effect of GLP-1 in type-1 diabetes.It possible, that GLP-1 in combination with insulin (possibly mainly through its effect on glucagon inhibition and gastric emptying) could reduce the need for exogenous insulin with a concomitant reduced risc of hypoglycemia. Without compromising the target glucemic control. This study focuses of the postprandial bloodglucose lowering effects of endogenous as well as exogenous GLP-1 in patients with type-1 diabetes according to residual betacell function and glycemic control.Furthermore, the endogenous secretion of incretin hormones in patients with type-1 diabetes mellitus will be compared to that of matched normal controls.

Study Type

Observational

Enrollment (Actual)

30

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Denmark
      • Hvidovre, Denmark, 2650
        • Hvidovre University Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 60 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

primary care clinic patients and community population(control subjects)

Description

Inclusion Criteria:

  • type-1 diabetes mellitus
  • diagnosis between 5-40 years.
  • age 18-60 year
  • normal weight at time of diagnosis
  • insulintreatment from diagnosis
  • HbA1c < 7.6 %

Exclusion Criteria:

  • diabetic complications
  • disease other than type-1 diabetes

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
blood glucose
Time Frame: 4 hours
4 hours

Secondary Outcome Measures

Outcome Measure
Time Frame
GLP-1 and GIP response during a meal
Time Frame: 4 hours
4 hours
betacell function (incremental area under the c-peptide concentration curve)
Time Frame: 4 hours
4 hours
alfa cell function (plasma glucagon)
Time Frame: 4 hours
4 hours
gastric emptying
Time Frame: 4 hours
4 hours

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Hvidovre University Hospital

Investigators

  • Study Director: Urd Kielgast, MD, Unafilliated
  • Principal Investigator: Sten Madsbad, MD, DMSc, Unafilliated

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

May 1, 2008

Primary Completion (Actual)

October 1, 2008

Study Completion (Actual)

October 1, 2008

Study Registration Dates

First Submitted

January 29, 2009

First Submitted That Met QC Criteria

January 29, 2009

First Posted (Estimate)

January 30, 2009

Study Record Updates

Last Update Posted (Estimate)

January 30, 2009

Last Update Submitted That Met QC Criteria

January 29, 2009

Last Verified

January 1, 2009

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • H-C-2007-0080
  • 2008-41-1811

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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