Deze pagina is automatisch vertaald en de nauwkeurigheid van de vertaling kan niet worden gegarandeerd. Raadpleeg de Engelse versie voor een brontekst.

Pharmacokinetics Study of Dipeptidyl Peptidase 4 Inhibitor to Control Type 2 Diabetes Mellitus

10 november 2015 bijgewerkt door: Ji Hyun Kim, The Catholic University of Korea

Mechanism of Reduced Response to DPP-4 Inhibitor in Patients With Type 2 Diabetes Mellitus

The purpose of this study is to confirm the mechanism of reduced response to DPP-4 inhibitor in some patients with type 2 diabetes and evaluate appropriate patients to treat with DPP-4 inhibitor

Studie Overzicht

Toestand

Voltooid

Conditie

Interventie / Behandeling

Gedetailleerde beschrijving

Sitagliptin, a DPP-4 inhibitor was used as an incretin enhancer in clinical practice first. In clinical trials, sitagliptin showed effective control of blood glucose level in type 2 diabetes and 100 mg once daily with metformin was similar to sulfonylurea (glipizide) with metformin in lowering HbA1c. Mostly in practice, stable blood glucose levels were maintained after change of sulfonylurea to sitagliptin in type 2 diabetes treatment. However, in some cases, there were abrupt severe hyperglycemia and uncontrolled blood glucose level after drug change to sitagliptin.

Several mechanism could be considered for reduced response to DPP-4 inhibitor in some type 2 diabetes patients. Firstly, significantly reduced secretion of glucagon-like peptide 1 (GLP-1) more than expected in diabetes or functional defect of GLP-1 activity could be the mechanism of loss of GLP-1 effect irrespective of DPP-4. Secondly, mutation or functional defect of DPP-4 enzyme could not be inhibited by DPP-4 inhibitor. Thirdly, GLP-1 receptor mutation or other defect in β-cell responsiveness to GLP-1 leads to reduction of response to DPP-4 inhibitor.

Studietype

Ingrijpend

Inschrijving (Werkelijk)

24

Fase

  • Fase 4

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studie Locaties

  • Korea, republiek van
      • Seoul, Korea, republiek van, 130-709
        • The Catholic University of Korea; St.Paul's Hospital
      • Seoul, Korea, republiek van, 137-701
        • The Catholic University of Korea; Seoul St. Mary's Hospital

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

20 jaar tot 70 jaar (Volwassen, Oudere volwassene)

Accepteert gezonde vrijwilligers

Nee

Geslachten die in aanmerking komen voor studie

Allemaal

Beschrijving

Inclusion Criteria:

  • Type 2 diabetic patients with less than 15 yrs of disease duration
  • BMI between 22-27 kg/m2

  • HbA1c ≤ 9% at recruitment

    1. Study group

After change sulfonylurea to sitagliptin in case of metformin and sulfonylurea therapy

  1. Increase of fasting blood glucose over 20 mg/dL or postprandial glucose over 30 mg/dL within several days or

  2. Increase of HbA1c over 1% within 2-3 months without abrupt increase of blood glucose levels within several days

    • Sulfonylurea dose : less than glimepiride 4mg or gliclazide 120mg or glibenclamide 10mg
    • Metformin dose : 500~2000mg
  3. Reduced response to sitagliptin should be made a decision by investigators after understanding the condition of patients surely.

2. Control group

  • Age, sex, BMI matched patients with same condition of study patients
  • After change sulfonylurea to sitagliptin in case of metformin plus sulfonylurea therapy, no change of blood glucose levels like above or stable HbA1c change within 1% within 2-3 months

Exclusion Criteria:

  • Other causes of increase of blood glucose levels except drug change
  • Patients with history of insulin treatment
  • Patients taking thiazolidinediones, alpha-glucosidase inhibitors, GLP-1 analogue or DPP-4 inhibitors
  • Patients with renal, hepatic dysfunction
  • Patients with diabetic complications such as coronary heart disease, cerebrovascular disease, proliferative diabetic retinopathy or diabetic gastroparesis
  • Patients taking medications affecting glucose level

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Primair doel: Behandeling
  • Toewijzing: Niet-gerandomiseerd
  • Interventioneel model: Parallelle opdracht
  • Masker: Geen (open label)

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Actieve vergelijker: study group
sitagliptin hypo-response patients
Geneesmiddel: Sitagliptin
Sitagliptin (100mg, per oral) once a day.
Andere namen:
  • Januvia
Sham-vergelijker: control group
sitagliptin response patients
Geneesmiddel: Sitagliptin
Sitagliptin (100mg, per oral) once a day.
Andere namen:
  • Januvia

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Plasma Concentration of Active Glucagon-like Peptide 1 (GLP-1) Before and After Sitagliptin Treatment
Tijdsspanne: 0, 15, 30, 45, 60, 90, 120, 180 min pre and post-dose
Plasma concentrations of active GLP-1 were measured at 0, 15, 30, 45, 60, 90, 120 and 180 min during the meal tolerance test (MTT). Second measurement of active GLP-1 were measured with MTT after taking sitagliptin 100 mg 1 hour before the test.
0, 15, 30, 45, 60, 90, 120, 180 min pre and post-dose
Plasma Concentration of Total GLP-1 Before and After Sitagliptin Treatment
Tijdsspanne: 0, 15, 30, 45, 60, 90, 120, 180 min pre and post-dose
Plasma concentrations of total GLP-1 were measured at 0, 15, 30, 45, 60, 90, 120 and 180 min during the meal tolerance test. Second measurement of total GLP-1 were measured with MTT after taking sitagliptin 100 mg 1 hour before the test.
0, 15, 30, 45, 60, 90, 120, 180 min pre and post-dose
Plasma Concentration of Total Glucose-dependent Insulinotropic Polypeptide (GIP) Before and After Sitagliptin Treatment
Tijdsspanne: 0, 15, 30, 45, 60, 90, 120, 180 min pre and post-dose
Plasma concentrations of total GIP were measured at 0, 15, 30, 45, 60, 90, 120 and 180 min during the meal tolerance test. Second measurement of total GIP were measured with MTT after taking sitagliptin 100 mg 1 hour before the test.
0, 15, 30, 45, 60, 90, 120, 180 min pre and post-dose
Change in AUC of Active GLP-1, Total GLP-1 and Total GIP Between Before and After Sitagliptin Treatment
Tijdsspanne: 0, 15, 30, 45, 60, 90, 120, 180 min pre and post-dose
Plasma concentrations of active GLP-1, total GLP-1 and total GIP were measured at 0, 15, 30, 45, 60, 90, 120 and 180 min during the meal tolerance test. Second measurements were measured with MTT after taking sitagliptin 100 mg 1 hour before the test. Comparisons were made using Area under the curve (AUC) values and incremental area under the curve (ΔAUC) of active GLP-1, total GLP-1 and total GIP before and after the addition of sitagliptin.
0, 15, 30, 45, 60, 90, 120, 180 min pre and post-dose

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Differences of DPP-4 Activity After Sitagliptin Treatment Between Responder and Non-responder Groups
Tijdsspanne: 0, 15, 30, 45, 60 min post-dose
The DPP-4 activity was measured at baseline and 0, 15, 30, 45 and 60 min during the meal tolerance test. Second measurement of DPP-4 activity was measured with MTT after taking sitagliptin 100 mg 1 hour before the test. Plasma DPP-4 activity during meal tolerance test is expressed as percentage activity relative to baseline. DPP-4 activity % was calculated using the following formula : (DPP-4 activity at time t / Baseline DPP-4 activity) × 100.
0, 15, 30, 45, 60 min post-dose

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

The Catholic University of Korea

Medewerkers

Merck Sharp & Dohme LLC

Onderzoekers

  • Hoofdonderzoeker: Ji Hyun Kim, Dr, The Catholic University of Korea

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start

1 december 2011

Primaire voltooiing (Werkelijk)

1 augustus 2014

Studie voltooiing (Werkelijk)

1 juli 2015

Studieregistratiedata

Eerst ingediend

29 september 2011

Eerst ingediend dat voldeed aan de QC-criteria

7 oktober 2011

Eerst geplaatst (Schatting)

10 oktober 2011

Updates van studierecords

Laatste update geplaatst (Schatting)

14 december 2015

Laatste update ingediend die voldeed aan QC-criteria

10 november 2015

Laatst geverifieerd

1 november 2015

Meer informatie

Termen gerelateerd aan deze studie

Trefwoorden

Aanvullende relevante MeSH-voorwaarden

Andere studie-ID-nummers

  • CMCENDO-01

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .

Abonneren