- ICH GCP
- Registro degli studi clinici negli Stati Uniti
- Sperimentazione clinica NCT01449747
Pharmacokinetics Study of Dipeptidyl Peptidase 4 Inhibitor to Control Type 2 Diabetes Mellitus
Mechanism of Reduced Response to DPP-4 Inhibitor in Patients With Type 2 Diabetes Mellitus
Panoramica dello studio
Descrizione dettagliata
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.
Tipo di studio
Iscrizione (Effettivo)
Fase
- Fase 4
Contatti e Sedi
Luoghi di studio
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Seoul, Corea, Repubblica di, 130-709
- The Catholic University of Korea; St.Paul's Hospital
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Seoul, Corea, Repubblica di, 137-701
- The Catholic University of Korea; Seoul St. Mary's Hospital
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Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Descrizione
Inclusion Criteria:
- Type 2 diabetic patients with less than 15 yrs of disease duration
- BMI between 22-27 kg/m2
HbA1c ≤ 9% at recruitment
- Study group
After change sulfonylurea to sitagliptin in case of metformin and sulfonylurea therapy
- Increase of fasting blood glucose over 20 mg/dL or postprandial glucose over 30 mg/dL within several days or
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
- 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
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Scopo principale: Trattamento
- Assegnazione: Non randomizzato
- Modello interventistico: Assegnazione parallela
- Mascheramento: Nessuno (etichetta aperta)
Armi e interventi
Gruppo di partecipanti / Arm |
Intervento / Trattamento |
|---|---|
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Comparatore attivo: study group
sitagliptin hypo-response patients
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Sitagliptin (100mg, per oral) once a day.
Altri nomi:
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Comparatore fittizio: control group
sitagliptin response patients
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Sitagliptin (100mg, per oral) once a day.
Altri nomi:
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Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
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Plasma Concentration of Active Glucagon-like Peptide 1 (GLP-1) Before and After Sitagliptin Treatment
Lasso di tempo: 0, 15, 30, 45, 60, 90, 120, 180 min pre and post-dose
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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.
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0, 15, 30, 45, 60, 90, 120, 180 min pre and post-dose
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Plasma Concentration of Total GLP-1 Before and After Sitagliptin Treatment
Lasso di tempo: 0, 15, 30, 45, 60, 90, 120, 180 min pre and post-dose
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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.
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0, 15, 30, 45, 60, 90, 120, 180 min pre and post-dose
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Plasma Concentration of Total Glucose-dependent Insulinotropic Polypeptide (GIP) Before and After Sitagliptin Treatment
Lasso di tempo: 0, 15, 30, 45, 60, 90, 120, 180 min pre and post-dose
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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.
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0, 15, 30, 45, 60, 90, 120, 180 min pre and post-dose
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Change in AUC of Active GLP-1, Total GLP-1 and Total GIP Between Before and After Sitagliptin Treatment
Lasso di tempo: 0, 15, 30, 45, 60, 90, 120, 180 min pre and post-dose
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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.
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0, 15, 30, 45, 60, 90, 120, 180 min pre and post-dose
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Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
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Differences of DPP-4 Activity After Sitagliptin Treatment Between Responder and Non-responder Groups
Lasso di tempo: 0, 15, 30, 45, 60 min post-dose
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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.
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0, 15, 30, 45, 60 min post-dose
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Collaboratori e investigatori
Sponsor
Collaboratori
Investigatori
- Investigatore principale: Ji Hyun Kim, Dr, The Catholic University of Korea
Studiare le date dei record
Studia le date principali
Inizio studio
Completamento primario (Effettivo)
Completamento dello studio (Effettivo)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Stima)
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Stima)
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Parole chiave
Termini MeSH pertinenti aggiuntivi
- Disturbi del metabolismo del glucosio
- Malattie metaboliche
- Malattie del sistema endocrino
- Diabete mellito
- Diabete mellito, tipo 2
- Agenti ipoglicemizzanti
- Effetti fisiologici delle droghe
- Meccanismi molecolari dell'azione farmacologica
- Inibitori enzimatici
- Ormoni
- Ormoni, sostituti ormonali e antagonisti ormonali
- Inibitori della proteasi
- Incretine
- Inibitori della dipeptidil-peptidasi IV
- Sitagliptin fosfato
Altri numeri di identificazione dello studio
- CMCENDO-01
Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .
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