Type 2 Diabetes MellitusNCT00497133
Alpha-Cell Sensitivity to GLP-1 in Patients With Type 2 Diabetes
An observational study of Type 2 Diabetes Mellitus, run by University of Copenhagen at 1 site in Denmark.
Trial summary
Glucagon-like peptide 1 is known to improve sensitivity of the pancreatic beta-cell. Further it inhibit secretion from the pancreatic alpha-cell by mechanisms not fully understand. With this study we wish to elucidate the potential of GLP-1 to increase the sensitivity of the alpha-cell. Read more about this study
- Who is it for?
- Ages 40 to 75 yearsHealthy volunteers can take part
- Conditions the study is for
- Type 2 Diabetes Mellitus
- How many people
- 20 participants
- Where
- 1 siteDenmark
- Study dates
- Jul 2007to Mar 2008
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 40 to 75 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Study population: Patients with type 2 diabetes mellitus and matched control subjects.
Who may be able to join
- Informed oral and written consent
- Caucasians aged > 18 years diagnosed with T2DM due to WHO criteria.
- Normal haemoglobin
- HbA1c 6-10%
- BMI 23-35 kg/m2
Who cannot join
- Hepatic disease, ALAT > 2 x normal.
- Diabetic nephropathy, (S-creatinine >130μM or albuminuria).
- Diabetic neuropathy (reported)
- Proliferative diabetic retinopathy (reported)
- Medical treatment that cannot be paused for 12 hours
- Insulin- or glitazon treatment
Trial locations and contacts
1 site in 1 country.
Denmark1 site
Gentofte Hostital, Dep. og Internal Medicin F
Gentofte Municipality, Hellerup, DK-2900
About this study
Glucagon-like peptide 1 is known to improve sensitivity of the pancreatic beta-cell. Further it inhibit secretion from the pancreatic alpha-cell by mechanisms not fully understand. With this study we wish to elucidate the potential of GLP-1 to increase the sensitivity of the alpha-cell.
Type 2 diabetic patients and control subjects receive infusions of GLP-1 in increasing doses or saline, alpha- and beta-cell responses are measured in blood-samples. During the study plasma-glucose levels are clamped at fasting levels.
With this study we hope to elucidate the pathophysiology behind defect glucose tolerance in type 2 diabetes mellitus and further more the potential of GLP-1 in treatment of type 2 diabetes mellitus.
Read the detailed description
Background: Glucagon-like peptide-1 (GLP-1) possesses insulinotropic and glucagonostatic properties, and, therefore, GLP-based antidiabetic therapies have been developed. Even though the insulinotropic potency of GLP-1 has been shown to be reduced in patients with type 2 diabetes mellitus (T2DM), a small dose of GLP-1 is capable of normalizing the beta-cell responsiveness to glucose in these patients. The glucagonostatic potency of GLP-1 in patients with T2DM is not known, and, furthermore, the capability of GLP-1 to reestablish normal glucagon secretion in these patients remains to be elucidated.
Objective: To investigate the alpha-cell sensitivity to GLP-1 in patients with T2DM and to establish if GLP-1 is able to reestablish normal glucagon secretion in such patients.
Method: Ten patients with T2DM and ten healthy control subjects are clamped at their fasting blood glucose levels during GLP-1 infusions at increasing doses (0.25, 0.5, 1.0 and 2.0 pmol/kg/min) and placebo, respectively. Furthermore, the patients will be hospitalized overnight while receiving intravenous insulin and thereafter examined under normoglycaemic conditions. Blood are being drawn for analysis of plasma insulin, C-peptide, GLP-1 and glucagon.
Expected results and conclusions: We expect that GLP-1 will inhibit glucagon secretion in a dose dependent manner, leading too an increase in glucose turn-over. The results will potentially elucidate the interaction between GLP-1 and glucagon secretion and thereby broaden our knowledge on the pathophysiology of T2DM. Furthermore, the present study will determine the therapeutic impact of GLP-1 on the alpha-cell deficiency characterizing patients with T2DM.
- Conditions
- Type 2 Diabetes Mellitus
- Keywords
- glucoseintolerance
- Medical subject headings
- Diabetes Mellitus, Type 2
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted6 Jul 2007 (estimated)
- Study startJul 2007
- Primary completionMar 2008
- Study completionMar 2008
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Type 2 Diabetes MellitusStudies of the same condition, open and under way.
- More trials run by University of CopenhagenThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case-control
- Time perspective
- Prospective
- Enrolment
- 20 participants (estimated)
Sponsor and investigators
- Lead sponsor
- University of Copenhagen
- Sponsor type
- University, hospital or other
- Collaborators
- Novo Nordisk A/S, The Danish Diabetes Association
- Investigators
- Jens Juul Holst, Professor, MD,MMSc, Study director, University of Copenhagen, Department of Biomedical Sciences
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00497133
- Sponsor's protocol ID
- H-KA-20070023
- Status last verified
- Jun 2008
- First submitted
- 5 Jul 2007
- Last updated
- 4 Jun 2008
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 4 Jun 2008. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Alpha-Cell Sensitivity to GLP-1 in Patients With Type 2 Diabetes
- ClinicalTrials.gov ID
- NCT00497133
- Acronym / sponsor ID
- H-KA-20070023
- Conditions
- Type 2 Diabetes Mellitus
- Keywords
- glucoseintolerance
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 20 participants (estimated)
- Lead sponsor
- University of CopenhagenUniversity, hospital or other
- Collaborators
- Novo Nordisk A/S, The Danish Diabetes Association
- Study start
- Jul 2007
- Primary completion
- Mar 2008 (actual)
- Study completion
- Mar 2008 (actual)
- First posted
- 6 Jul 2007 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Glucagon-like peptide 1 is known to improve sensitivity of the pancreatic beta-cell. Further it inhibit secretion from the pancreatic alpha-cell by mechanisms not fully understand. With this study we wish to elucidate the potential of GLP-1 to increase the sensitivity of the alpha-cell.
Type 2 diabetic patients and control subjects receive infusions of GLP-1 in increasing doses or saline, alpha- and beta-cell responses are measured in blood-samples. During the study plasma-glucose levels are clamped at fasting levels.
With this study we hope to elucidate the pathophysiology behind defect glucose tolerance in type 2 diabetes mellitus and further more the potential of GLP-1 in treatment of type 2 diabetes mellitus.
Detailed description
Background: Glucagon-like peptide-1 (GLP-1) possesses insulinotropic and glucagonostatic properties, and, therefore, GLP-based antidiabetic therapies have been developed. Even though the insulinotropic potency of GLP-1 has been shown to be reduced in patients with type 2 diabetes mellitus (T2DM), a small dose of GLP-1 is capable of normalizing the beta-cell responsiveness to glucose in these patients. The glucagonostatic potency of GLP-1 in patients with T2DM is not known, and, furthermore, the capability of GLP-1 to reestablish normal glucagon secretion in these patients remains to be elucidated.
Objective: To investigate the alpha-cell sensitivity to GLP-1 in patients with T2DM and to establish if GLP-1 is able to reestablish normal glucagon secretion in such patients.
Method: Ten patients with T2DM and ten healthy control subjects are clamped at their fasting blood glucose levels during GLP-1 infusions at increasing doses (0.25, 0.5, 1.0 and 2.0 pmol/kg/min) and placebo, respectively. Furthermore, the patients will be hospitalized overnight while receiving intravenous insulin and thereafter examined under normoglycaemic conditions. Blood are being drawn for analysis of plasma insulin, C-peptide, GLP-1 and glucagon.
Expected results and conclusions: We expect that GLP-1 will inhibit glucagon secretion in a dose dependent manner, leading too an increase in glucose turn-over. The results will potentially elucidate the interaction between GLP-1 and glucagon secretion and thereby broaden our knowledge on the pathophysiology of T2DM. Furthermore, the present study will determine the therapeutic impact of GLP-1 on the alpha-cell deficiency characterizing patients with T2DM.
Study design
- Observational model
- Case-control
- Time perspective
- Prospective
Who may qualify
- Ages
- 40 to 75 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
- Study population
- Patients with type 2 diabetes mellitus and matched control subjects.
Key inclusion criteria (5 listed)
- Informed oral and written consent
- Caucasians aged > 18 years diagnosed with T2DM due to WHO criteria.
- Normal haemoglobin
- HbA1c 6-10%
- BMI 23-35 kg/m2
Key exclusion criteria (6 listed)
- Hepatic disease, ALAT > 2 x normal.
- Diabetic nephropathy, (S-creatinine >130μM or albuminuria).
- Diabetic neuropathy (reported)
- Proliferative diabetic retinopathy (reported)
- Medical treatment that cannot be paused for 12 hours
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Not reported in the source record.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 4 Jun 2008.
Related trials for Type 2 Diabetes Mellitus
Not yet recruitingPhase 3
Efficacy and Safety of Once-Weekly SHR-3167 Compared With Once-Daily Insulin Glargine in Adults With Insulin-Naive Type 2 Diabetes
Type 2 Diabetes
Active, not recruiting
Digital Reinforcement of Motivational Interviewing Micro-Skills Among Primary Care Healthcare Professionals
Hypertension (Without Type 2 Diabetes Mellitus)
Recruiting
Investigating Vascular Properties of HEMI and SPG Signals in Individuals With or at Risk for Chronic Kidney Disease
Chronic Kidney Disease, Hypertension (HTN)
Not yet recruitingPhase 3
A Study to Evaluate the Effectiveness and Safety of the Drug AZD6234 for Managing Weight in Adults Who Are Obese or Overweight. These Participants May or May Not Also Have Type 2 Diabetes
Obesity, Overweight
Not yet recruiting
Impact of Endoscopic Sleeve Gastroplasty (ESG) in Obese Adults With Type 2 Diabetes (T2D)
Type 2 Diabetes Mellitus (T2D), Obesity (BMI>30)
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Jens Juul Holst, Professor, MD,MMSc study director
University of Copenhagen, Department of Biomedical Sciences
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Type 2 Diabetes Mellitus, run by University of Copenhagen at 1 site in Denmark.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 4 Jun 2008. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Denmark. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 4 Jun 2008.