Mechanisms of Insulin Resistance in Critical Illness: Role of Systemic Inflammation and GLP-1

Sponsor
Rigshospitalet, Denmark (Other)
Overall Status
Completed
CT.gov ID
NCT01347801
Collaborator
University of Copenhagen (Other), Novo Nordisk A/S (Industry)
40
2
9
42.1
20
0.5

Study Details

Study Description

Brief Summary

The purpose of this study is to determine the role of inflammation and the insulin regulating hormone GLP-1 during critical illness.

Condition or Disease Intervention/Treatment Phase
N/A

Detailed Description

Critically ill patients often exhibit hyperglycaemia. Although the cause of this hyperglycaemia is probably multifactorial, peripheral insulin resistance is a major contributor, similar to type 2 diabetes mellitus (T2D). There are several similarities between critical illness and T2D, including the presence of systemic inflammation and increased plasma free fatty acids (FFA), all of which may induce insulin resistance in healthy volunteers. In critical illness, elevated catecholamines, cortisol, growth hormone and glucagon may also contribute to insulin resistance.

The degree of hyperglycaemia correlates with mortality in ICU patients. van den Berghe et al. found that IV infusion of insulin to obtain strict normoglycaemia reduced mortality as well as morbidity in critically ill surgical patients and in some medical ICU patients.

However, insulin increases the risk of hypoglycaemia; this is a major obstacle to strict euglycaemia in ICU patients and may explain the inability of others to reproduce the benefits reported by van den Berghe et al. Thus, alternatives to insulin for controlling plasma glucose (PG) in ICU patients are warranted.

Aim:

To study the role of the incretin hormone, glucagon-like peptide (GLP)-1 for glycaemic, metabolic, hormonal and inflammatory profile in

  • critically ill patients in the intensive care unit (ICU) and

  • healthy volunteers exposed to a standardised systemic inflammation

Study Design

Study Type:
Interventional
Actual Enrollment :
40 participants
Allocation:
Randomized
Intervention Model:
Crossover Assignment
Masking:
None (Open Label)
Primary Purpose:
Basic Science
Official Title:
Mechanisms of Insulin Resistance in Critical Illness: Role of Systemic Inflammation and GLP-1
Study Start Date :
Mar 1, 2011
Actual Primary Completion Date :
Sep 1, 2014
Actual Study Completion Date :
Sep 1, 2014

Arms and Interventions

Arm Intervention/Treatment
Placebo Comparator: 2C - 1

TNF and OGTT and saline

Drug: Placebo (Saline)
Normal saline (NaCl 0,9%)

Drug: TNF-alfa
1000ng/m2 BSA/hour i.v. infusion for 4-6 hours

Other: OGTT
Oral glucose tolerance test with 75 g glucose

Active Comparator: 2C - 2

TNF and OGTT and GLP-1

Drug: GLP-1
GLP-1 1,2pmol/kg/min i.v. infusion for 4 hours

Drug: TNF-alfa
1000ng/m2 BSA/hour i.v. infusion for 4-6 hours

Other: OGTT
Oral glucose tolerance test with 75 g glucose

Placebo Comparator: 2C - 3

TNF and IVGTT and saline

Drug: Placebo (Saline)
Normal saline (NaCl 0,9%)

Drug: TNF-alfa
1000ng/m2 BSA/hour i.v. infusion for 4-6 hours

Other: IVGTT
Intravenous glucose tolerance test with infusion of 20% glucose matching the glucose profile of the corresponding OGTT

Active Comparator: 2C - 4

TNF and IVGTT and GLP-1

Drug: GLP-1
GLP-1 1,2pmol/kg/min i.v. infusion for 4 hours

Drug: TNF-alfa
1000ng/m2 BSA/hour i.v. infusion for 4-6 hours

Other: IVGTT
Intravenous glucose tolerance test with infusion of 20% glucose matching the glucose profile of the corresponding OGTT

Placebo Comparator: 2A-1

Saline infusion and OGTT

Drug: Placebo (Saline)
Normal saline (NaCl 0,9%)

Other: OGTT
Oral glucose tolerance test with 75 g glucose

Placebo Comparator: 2A-2

Saline and IVGTT

Drug: Placebo (Saline)
Normal saline (NaCl 0,9%)

Other: IVGTT
Intravenous glucose tolerance test with infusion of 20% glucose matching the glucose profile of the corresponding OGTT

Active Comparator: 2A-3

TNF and OGTT

Drug: TNF-alfa
1000ng/m2 BSA/hour i.v. infusion for 4-6 hours

Other: OGTT
Oral glucose tolerance test with 75 g glucose

Active Comparator: 2A-4

TNF and IVGTT

Drug: TNF-alfa
1000ng/m2 BSA/hour i.v. infusion for 4-6 hours

Other: IVGTT
Intravenous glucose tolerance test with infusion of 20% glucose matching the glucose profile of the corresponding OGTT

Experimental: 1C

OGTT and corresponding IVGTT

Other: OGTT
Oral glucose tolerance test with 75 g glucose

Other: IVGTT
Intravenous glucose tolerance test with infusion of 20% glucose matching the glucose profile of the corresponding OGTT

Outcome Measures

Primary Outcome Measures

  1. Substudy 2C (12 Healthy volunteers): GLP-1 [6 weeks after intervention]

    Increased plasma insulin and C-peptide (intact insulinotropic effect of GLP-1) during GLP-1 infusion in healthy volunteers.

  2. Substudy 2A (12 Healthy volunteers): Insulin, C-peptide and incretin hormone response [6 weeks after intervention]

    Insulin, c-peptide and incretin hormone response to glucose stimulation during standardized systemic inflammation (TNF infusion) compared to placebo (saline infusion)

  3. Substudy 1C(8 patients, 8 healthy controls): Insulin, C-peptide and incretin hormone response [6 weeks after intervention]

    Insulin, c-peptide and incretin hormone response to glucose stimulation during IVGTT compared to OGTT in critically ill patients admitted to the ICU

Secondary Outcome Measures

  1. Substudy 2C (12 Healthy volunteers): Clamp [6 weeks after intervention]

    Enhanced insulin response (AUC) and reduced difference between the AUC obtained during OGTT and IGGTT (reduced endogenous incretin effect) during an isoglycaemic intravenous glucose tolerance test (IVGTT) in healthy volunteers receiving TNF-infusion.

  2. Substudy 2A (12 Healthy volunteers): The incretin effect [6 weeks after intervention]

    The difference between the plasma insulin AUC obtained during OGTT and IVGTT (endogenous incretin effect).

  3. Substudy 1C (8 patients, 8 healthy controls): The incretin effect [6 weeks after intervention]

    The difference between the plasma insulin AUC obtained during OGTT and IVGTT (endogenous incretin effect)in non-diabetic critically ill patients admitted to the ICU.

Eligibility Criteria

Criteria

Ages Eligible for Study:
18 Years to 40 Years
Sexes Eligible for Study:
Male
Accepts Healthy Volunteers:
Yes
Inclusion Criteria healthy subjects:
  • Healthy (assessed by medical history and clinical examination)

  • Age 18-40years

  • BMI < 30kg/m2

Exclusion Criteria healthy subjects:
  • Previous resection of the small intestine (not including the appendix)

  • presence of any inflammatory illness during the fortnight preceding the study

Inclusion Criteria critically ill patients:
  • Age>18 years

  • HbA1C<6,5%

  • Admission to the ICU within the last 72 hours

Contacts and Locations

Locations

Site City State Country Postal Code
1 Centre of Inflammation and Metabolism - Rigshospitalet 7641 Copenhagen Denmark 2100
2 University of Copenhagen Copenhagen Denmark 2400

Sponsors and Collaborators

  • Rigshospitalet, Denmark
  • University of Copenhagen
  • Novo Nordisk A/S

Investigators

  • Principal Investigator: Kirsten Møller, MD, Ph.D., DMSc, Centre of Inflammation and Metabolism

Study Documents (Full-Text)

None provided.

More Information

Publications

Responsible Party:
Kirsten Moller, MD, PH.D, DMSc, Rigshospitalet, Denmark
ClinicalTrials.gov Identifier:
NCT01347801
Other Study ID Numbers:
  • HS:H-3-2009-108
First Posted:
May 4, 2011
Last Update Posted:
Sep 22, 2014
Last Verified:
Sep 1, 2014
Keywords provided by Kirsten Moller, MD, PH.D, DMSc, Rigshospitalet, Denmark
Additional relevant MeSH terms:

Study Results

No Results Posted as of Sep 22, 2014