The Importance of GLP-1 in Post RYGB Improvement in Glycaemic Control Type 2 Diabetic Subjects

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified April 2012 by Hvidovre University Hospital.
Recruitment status was:  Recruiting
Information provided by (Responsible Party):
Nils Bruun Jørgensen, Hvidovre University Hospital Identifier:
First received: April 16, 2012
Last updated: April 17, 2012
Last verified: April 2012
After Roux-en-Y gastric bypass (RYGB) meal induced GLP-1 secretion is dramatically increased, while beta-cell function is increased in type 2 diabetic (T2D) subjects. The aim of this study is to establish causality between the two observations. By meal testing 10 T2D subjects with infusion of saline or exendin (9-39), a GLP-1R specific blocker, before and 1 week and 3 months after RYGB we hope to demonstrate the role of GLP-1 in improveing beta-cell function and maintaing glucose tolerance after RYGB in T2D subjects.

Condition Intervention
Type 2 Diabetes
Other: Exendin 9-39 (Bachem, Germany)

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: Single Blind (Subject)
Primary Purpose: Basic Science

Further study details as provided by Hvidovre University Hospital:

Primary Outcome Measures:
  • Beta cell glucose sensibility in response to a meal [ Time Frame: 3 mo ]
    1 week and 3 months after RYGB with and without GLP-1R blockade.

  • Glucose tolerance measured as AUC glucose afer a meal [ Time Frame: 3 mo ]

Estimated Enrollment: 10
Study Start Date: April 2012
Estimated Primary Completion Date: November 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: RYGB
Subjects undergo RYGB.
Other: Exendin 9-39 (Bachem, Germany)
On two separate experimental days before, 1 wk, and 3 mo after RYGB, subjects are given a liquid meal test during Exendin 9-39 (900 pmol/min/kg)or saline infusion. The order of the infusions is randomized.


Ages Eligible for Study:   25 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Fasting glucose > 7.0 mM, 2h glucose after OGTT > 11.0 mM. BMI > 35. HbA1c < 8.5%. Fasting C-peptide > 700 pM. Elegible for RYGB.

Exclusion Criteria:

  • Dysregulated hypothyroidism, hyperthyroidism, anaemia.
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Please refer to this study by its identifier: NCT01579981

Dept. of Endocrinology, Hvidovre Hospital
Hvidovre, Denmark, DK-2650
Sponsors and Collaborators
Hvidovre University Hospital
Study Chair: Sten Madsbad, MD, DMSc Dept. of Endocrinology, Hvidovre Hospital, Hvidovre, Denmark
Principal Investigator: Nils B Jørgensen, MD Dept. of Endocrinology, Hvidovre Hospital, Hvidovre, Denmark
  More Information

Responsible Party: Nils Bruun Jørgensen, Klinisk Assistent, Hvidovre University Hospital Identifier: NCT01579981     History of Changes
Other Study ID Numbers: H-A-2008-080-31742 
Study First Received: April 16, 2012
Last Updated: April 17, 2012

Keywords provided by Hvidovre University Hospital:
Bariatric Surgery
Glucagon-like-peptide 1 processed this record on January 24, 2017