Type 2 Diabetes MellitusPhase 4NCT02192853
Correlation Between Plasma- and Endothelial DPP-4 Activity
A Phase 4 study testing sitagliptin in people with Type 2 Diabetes Mellitus, run by University Hospital, Gentofte, Copenhagen at 1 site in Denmark.
Trial summary
The investigators want to estimate both the endothelial and the plasma activity of dipeptidyl peptidase 4 during different doses of sitagliptin in healthy subjects and patients with type 2 diabetes. Read more about this study
- Who is it for?
- Ages 35 to 80 yearsHealthy volunteers can take part
- Conditions the study is for
- Type 2 Diabetes Mellitus
- What is being tested?
- sitagliptin
- Type of treatment
- Pill or oral medicine, Injection or infusion
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 20 participants
- Where
- 1 siteDenmark
- Study dates
- May 2013to Mar 2014
- Phase
- Phase 4
- 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 35 to 80 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Caucasians with diet and/or metformin treated patients with type 2 diabetes (diagnosed according to the criterias of the World Health Organization)
- Normal Hemoglobin
- Prior Informed Consent
Who cannot join
- Nephropathy
- Liver disease
- Inflammatory bowel disease
- Pregnancy
Trial locations and contacts
1 site in 1 country.
Denmark1 site
Diabetes Research Division, Department of Endocrinology, Gentofte Hospital
Hellerup, 2900
About this study
Official title: Plasma and Endothelial Activity of Dipeptidyl Peptidase 4 During Different Doses of Sitagliptin
The investigators want to estimate both the endothelial and the plasma activity of dipeptidyl peptidase 4 during different doses of sitagliptin in healthy subjects and patients with type 2 diabetes. Furthermore, the investigators want to investigate whether the current clinical dose of 100 mg of sitagliptin is sufficient to inhibit both the plasma and the endothelial activity of the enzyme dipeptidyl peptidase 4.
Read the detailed description
The two incretin hormones glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP) are secreted from the intestinal L- and K- cells, respectively in response to ingestion of nutrients. The two hormones are able to lower blood glucose levels during high glucose levels - by the so called incretin effect. GIP and GLP-1 are both rapidly inactivated by the enzyme dipeptidyl peptidase 4 (DPP-4). The remaining metabolites are without insulinotropic effects. The effect of DPP-4 inhibitors used in treatment of type 2 diabetes relies on their impact on DPP-4 activity.
DPP-4 exists in a soluble form in plasma ad as a membrane-bound form in blood vessels and other tissues. The impact of DPP-4 inhibitors on DPP-4 activity has only been evaluated in plasma. We aim to investigate plasma and endothelial DPP-4 activity (i.e. whole-body DPP-4 activity) in patients with type 2 diabetes during different doses of the DPP-4 inhibitor sitagliptin.
Both healthy control subjects and patients with type 2 diabetes are subjected to 4 experimental days (in a randomized order) with continuous infusion of GLP-1 and pre-treatment with 25 mg sitagliptin, 100 mg sitagliptin, 200 mg sitagliptin and placebo, respectively. Afterwards, we are going to measure the whole-body DPP-4 activity by comparing plasma levels of active (intact) GLP-1 and total GLP-1, and relate to plasma DPP-4 activity.
- Conditions
- Type 2 Diabetes Mellitus
- Being tested
- sitagliptin, Placebo
- Keywords
- Diabetes Mellitus, Glucagon-like peptide 1, Dipeptidyl peptidase 4, Dipeptidyl peptidase 4 inhibitor, sitagliptin, Enzyme activity
- Medical subject headings
- Diabetes Mellitus, Type 2, Diabetes Mellitus
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
sitagliptinDrug
Also called Januvia
In randomized order:
Day 1: tablet of 25 mg of sitagliptin + i.v. GLP-1 infusion Day 2: tablet of 100 mg of sitagliptin + i.v. GLP-1 infusion Day 3: tablet of 200 mg of sitagliptin + i.v. GLP-1 infusion
PlaceboDrug
Day 4: placebo tablet
| Study group | Role | What they receive |
|---|---|---|
| Sitagliptin | Experimental | Patients with Type 2 Diabetes Mellitus and healthy control subjects are given tablets of sitagliptin in either a dosage of 25, 100 or 200 mg tablet in 3 different days. Receives: Drug: sitagliptin |
| placebo | Placebo comparator | Not described Receives: Drug: Placebo |
What is being measured
The primary outcome is the main question the study is designed to answer.
Correlation between the total and intact GLP-1 hormone during different doses of sitagliptin measured as total area under the curve (tAUC)
Measured: GLP.1 total and GLP-1 intact will be calculated based on blood samples at time points: -40,-30,-20,-10,0,10,20,30,40,50,60,75,90,105,120,150,180,240,300,360 on all days
Secondary outcomes (3)
Differences in serum-/plasma concentrations of GLP-1 measured as total Area under the curve (tAUC)
Measured: GLP-1 will be measured at time points(minutes): -40,-30,-20,-10,0,10,20,30,40,50,60,75,90,105,120,150,180,240,300,360 on all days
Differences in glucose measured as total Area under the curve (tAUC)
Measured: Glucose will be measured at time points(minutes): -40,-30,-20,-10,0,10,20,30,40,50,60,75,90,105,120,150,180,240,300,360 on all days
Differences in Insulin measured as total Area under the curve (tAUC)
Measured: Insulin will be measured at time points(minutes): -40,-30,-20,-10,0,10,20,30,40,50,60,75,90,105,120,150,180,240,300,360 on all days
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted17 Jul 2014 (estimated)
- Study startMay 2013
- Primary completionFeb 2014
- Study completionMar 2014
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (9)Papers the sponsor has linked to this study.
- Other trials for Type 2 Diabetes MellitusStudies of the same condition, open and under way.
- 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
- Interventional
- Phase
- Phase 4
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Double blind
- Who is masked
- Participant, Investigator
- Enrolment
- 20 participants (actual)
Sponsor and investigators
- Lead sponsor
- University Hospital, Gentofte, Copenhagen
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Emilie Skytte Andersen, University Hospital, Gentofte, Copenhagen
- Investigators
- Filip K Knop, MD PhD, Study director, Gentofte HospitalTina Vilsbøll, MD DMSc, Study chair, Gentofte HospitalAsger Lund, MD, Study chair, Gentofte HospitalCamilla Andersen, Med.stud., Study chair, Gentofte HospitalJens Juul Holst, MD DMSc, Study chair, Institute of biomedical sciences, University of CopenhagenEmilie Skytte Andersen, Med.stud., Principal investigator, Gentofte Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02192853
- Sponsor's protocol ID
- H-2-2012-149
- Status last verified
- Sep 2017
- First submitted
- 4 Jan 2014
- Last updated
- 11 Sep 2017
- Results posted
- No
- Data monitoring committee
- Yes
Publications
Deacon CF, Hughes TE, Holst JJ. Dipeptidyl peptidase IV inhibition potentiates the insulinotropic effect of glucagon-like peptide 1 in the anesthetized pig. Diabetes. 1998 May;47(5):764-9. doi: 10.2337/diabetes.47.5.764.
PubMed 9588448Holst JJ. The physiology of glucagon-like peptide 1. Physiol Rev. 2007 Oct;87(4):1409-39. doi: 10.1152/physrev.00034.2006.
PubMed 17928588Holst JJ, Vilsboll T, Deacon CF. The incretin system and its role in type 2 diabetes mellitus. Mol Cell Endocrinol. 2009 Jan 15;297(1-2):127-36. doi: 10.1016/j.mce.2008.08.012. Epub 2008 Aug 20.
PubMed 18786605Orskov C, Wettergren A, Holst JJ. Biological effects and metabolic rates of glucagonlike peptide-1 7-36 amide and glucagonlike peptide-1 7-37 in healthy subjects are indistinguishable. Diabetes. 1993 May;42(5):658-61. doi: 10.2337/diab.42.5.658.
PubMed 8482423Nauck MA, Heimesaat MM, Behle K, Holst JJ, Nauck MS, Ritzel R, Hufner M, Schmiegel WH. Effects of glucagon-like peptide 1 on counterregulatory hormone responses, cognitive functions, and insulin secretion during hyperinsulinemic, stepped hypoglycemic clamp experiments in healthy volunteers. J Clin Endocrinol Metab. 2002 Mar;87(3):1239-46. doi: 10.1210/jcem.87.3.8355.
PubMed 11889194Gutzwiller JP, Drewe J, Goke B, Schmidt H, Rohrer B, Lareida J, Beglinger C. Glucagon-like peptide-1 promotes satiety and reduces food intake in patients with diabetes mellitus type 2. Am J Physiol. 1999 May;276(5):R1541-4. doi: 10.1152/ajpregu.1999.276.5.R1541.
PubMed 10233049Vilsboll T, Krarup T, Madsbad S, Holst JJ. Both GLP-1 and GIP are insulinotropic at basal and postprandial glucose levels and contribute nearly equally to the incretin effect of a meal in healthy subjects. Regul Pept. 2003 Jul 15;114(2-3):115-21. doi: 10.1016/s0167-0115(03)00111-3.
PubMed 12832099Deacon CF. Circulation and degradation of GIP and GLP-1. Horm Metab Res. 2004 Nov-Dec;36(11-12):761-5. doi: 10.1055/s-2004-826160.
PubMed 15655705Herman GA, Stevens C, Van Dyck K, Bergman A, Yi B, De Smet M, Snyder K, Hilliard D, Tanen M, Tanaka W, Wang AQ, Zeng W, Musson D, Winchell G, Davies MJ, Ramael S, Gottesdiener KM, Wagner JA. Pharmacokinetics and pharmacodynamics of sitagliptin, an inhibitor of dipeptidyl peptidase IV, in healthy subjects: results from two randomized, double-blind, placebo-controlled studies with single oral doses. Clin Pharmacol Ther. 2005 Dec;78(6):675-88. doi: 10.1016/j.clpt.2005.09.002.
PubMed 16338283
Study at a glance
From the registry record, last updated by the sponsor on 11 Sep 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Plasma and Endothelial Activity of Dipeptidyl Peptidase 4 During Different Doses of Sitagliptin
- ClinicalTrials.gov ID
- NCT02192853
- Acronym / sponsor ID
- H-2-2012-149
- Conditions
- Type 2 Diabetes Mellitus
- Keywords
- Diabetes Mellitus, Glucagon-like peptide 1, Dipeptidyl peptidase 4, Dipeptidyl peptidase 4 inhibitor, sitagliptin, Enzyme activity
- Phase
- Phase 4
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 20 participants (actual)
- Lead sponsor
- University Hospital, Gentofte, CopenhagenUniversity, hospital or other
- Study start
- May 2013
- Primary completion
- Feb 2014 (actual)
- Study completion
- Mar 2014 (actual)
- First posted
- 17 Jul 2014 (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.
The investigators want to estimate both the endothelial and the plasma activity of dipeptidyl peptidase 4 during different doses of sitagliptin in healthy subjects and patients with type 2 diabetes. Furthermore, the investigators want to investigate whether the current clinical dose of 100 mg of sitagliptin is sufficient to inhibit both the plasma and the endothelial activity of the enzyme dipeptidyl peptidase 4.
Detailed description
The two incretin hormones glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP) are secreted from the intestinal L- and K- cells, respectively in response to ingestion of nutrients. The two hormones are able to lower blood glucose levels during high glucose levels - by the so called incretin effect. GIP and GLP-1 are both rapidly inactivated by the enzyme dipeptidyl peptidase 4 (DPP-4). The remaining metabolites are without insulinotropic effects. The effect of DPP-4 inhibitors used in treatment of type 2 diabetes relies on their impact on DPP-4 activity.
DPP-4 exists in a soluble form in plasma ad as a membrane-bound form in blood vessels and other tissues. The impact of DPP-4 inhibitors on DPP-4 activity has only been evaluated in plasma. We aim to investigate plasma and endothelial DPP-4 activity (i.e. whole-body DPP-4 activity) in patients with type 2 diabetes during different doses of the DPP-4 inhibitor sitagliptin.
Both healthy control subjects and patients with type 2 diabetes are subjected to 4 experimental days (in a randomized order) with continuous infusion of GLP-1 and pre-treatment with 25 mg sitagliptin, 100 mg sitagliptin, 200 mg sitagliptin and placebo, respectively. Afterwards, we are going to measure the whole-body DPP-4 activity by comparing plasma levels of active (intact) GLP-1 and total GLP-1, and relate to plasma DPP-4 activity.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Double blind (participant, investigator)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Sitagliptin | Experimental | Drug: sitagliptinPatients with Type 2 Diabetes Mellitus and healthy control subjects are given tablets of sitagliptin in either a dosage of 25, 100 or 200 mg tablet in 3 different days. |
| placebo | Placebo comparator | Drug: Placebo |
Who may qualify
- Ages
- 35 to 80 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- Caucasians with diet and/or metformin treated patients with type 2 diabetes (diagnosed according to the criterias of the World Health Organization)
- Normal Hemoglobin
- Prior Informed Consent
Key exclusion criteria (4 listed)
- Nephropathy
- Liver disease
- Inflammatory bowel disease
- Pregnancy
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| sitagliptinAlso: JanuviaIn randomized order: Day 1: tablet of 25 mg of sitagliptin + i.v. GLP-1 infusion Day 2: tablet of 100 mg of sitagliptin + i.v. GLP-1 infusion Day 3: tablet of 200 mg of sitagliptin + i.v. GLP-1 infusion | Drug | Sitagliptin |
| PlaceboDay 4: placebo tablet | Drug | placebo |
Primary outcome
Correlation between the total and intact GLP-1 hormone during different doses of sitagliptin measured as total area under the curve (tAUC)
Time frame: GLP.1 total and GLP-1 intact will be calculated based on blood samples at time points: -40,-30,-20,-10,0,10,20,30,40,50,60,75,90,105,120,150,180,240,300,360 on all days
3 secondary outcomes
Differences in serum-/plasma concentrations of GLP-1 measured as total Area under the curve (tAUC)
Time frame: GLP-1 will be measured at time points(minutes): -40,-30,-20,-10,0,10,20,30,40,50,60,75,90,105,120,150,180,240,300,360 on all days
Differences in glucose measured as total Area under the curve (tAUC)
Time frame: Glucose will be measured at time points(minutes): -40,-30,-20,-10,0,10,20,30,40,50,60,75,90,105,120,150,180,240,300,360 on all days
Differences in Insulin measured as total Area under the curve (tAUC)
Time frame: Insulin will be measured at time points(minutes): -40,-30,-20,-10,0,10,20,30,40,50,60,75,90,105,120,150,180,240,300,360 on all days
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 11 Sep 2017.
- Background: PubMed 9588448Deacon CF, Hughes TE, Holst JJ. Dipeptidyl peptidase IV inhibition potentiates the insulinotropic effect of glucagon-like peptide 1 in the anesthetized pig. Diabetes. 1998 May;47(5):764-9. doi: 10.2337/diabetes.47.5.764.
- Background: PubMed 17928588Holst JJ. The physiology of glucagon-like peptide 1. Physiol Rev. 2007 Oct;87(4):1409-39. doi: 10.1152/physrev.00034.2006.
- Background: PubMed 18786605Holst JJ, Vilsboll T, Deacon CF. The incretin system and its role in type 2 diabetes mellitus. Mol Cell Endocrinol. 2009 Jan 15;297(1-2):127-36. doi: 10.1016/j.mce.2008.08.012. Epub 2008 Aug 20.
- Background: PubMed 8482423Orskov C, Wettergren A, Holst JJ. Biological effects and metabolic rates of glucagonlike peptide-1 7-36 amide and glucagonlike peptide-1 7-37 in healthy subjects are indistinguishable. Diabetes. 1993 May;42(5):658-61. doi: 10.2337/diab.42.5.658.
- Background: PubMed 11889194Nauck MA, Heimesaat MM, Behle K, Holst JJ, Nauck MS, Ritzel R, Hufner M, Schmiegel WH. Effects of glucagon-like peptide 1 on counterregulatory hormone responses, cognitive functions, and insulin secretion during hyperinsulinemic, stepped hypoglycemic clamp experiments in healthy volunteers. J Clin Endocrinol Metab. 2002 Mar;87(3):1239-46. doi: 10.1210/jcem.87.3.8355.
- Background: PubMed 10233049Gutzwiller JP, Drewe J, Goke B, Schmidt H, Rohrer B, Lareida J, Beglinger C. Glucagon-like peptide-1 promotes satiety and reduces food intake in patients with diabetes mellitus type 2. Am J Physiol. 1999 May;276(5):R1541-4. doi: 10.1152/ajpregu.1999.276.5.R1541.
- Background: PubMed 12832099Vilsboll T, Krarup T, Madsbad S, Holst JJ. Both GLP-1 and GIP are insulinotropic at basal and postprandial glucose levels and contribute nearly equally to the incretin effect of a meal in healthy subjects. Regul Pept. 2003 Jul 15;114(2-3):115-21. doi: 10.1016/s0167-0115(03)00111-3.
- Background: PubMed 15655705Deacon CF. Circulation and degradation of GIP and GLP-1. Horm Metab Res. 2004 Nov-Dec;36(11-12):761-5. doi: 10.1055/s-2004-826160.
- Background: PubMed 16338283Herman GA, Stevens C, Van Dyck K, Bergman A, Yi B, De Smet M, Snyder K, Hilliard D, Tanen M, Tanaka W, Wang AQ, Zeng W, Musson D, Winchell G, Davies MJ, Ramael S, Gottesdiener KM, Wagner JA. Pharmacokinetics and pharmacodynamics of sitagliptin, an inhibitor of dipeptidyl peptidase IV, in healthy subjects: results from two randomized, double-blind, placebo-controlled studies with single oral doses. Clin Pharmacol Ther. 2005 Dec;78(6):675-88. doi: 10.1016/j.clpt.2005.09.002.
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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.
Filip K Knop, MD PhD study director
Gentofte Hospital
Tina Vilsbøll, MD DMSc study chair
Gentofte Hospital
Asger Lund, MD study chair
Gentofte Hospital
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 4 study testing sitagliptin in people with Type 2 Diabetes Mellitus, run by University Hospital, Gentofte, 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 3 inclusion and 4 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 11 Sep 2017. 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. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
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.
What does the primary outcome measure?
Correlation between the total and intact GLP-1 hormone during different doses of sitagliptin measured as total area under the curve (tAUC) (time frame: GLP.1 total and GLP-1 intact will be calculated based on blood samples at time points: -40,-30,-20,-10,0,10,20,30,40,50,60,75,90,105,120,150,180,240,300,360 on all days). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT02192853, which also lists 9 linked publications.
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 11 Sep 2017; AzTrials last refreshed its copy on 3 Nov 2026.