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The INDORSE Study: Inhibition of Dipeptidyl Peptidase IV: Outcomes on Renal Sodium Excretion (INDORSE)
Effects of DPP-4 Inhibitor Therapy on Renal Sodium Handling and Renal Hemodynamics in Type 2 Diabetes Patients. The INDORSE Study: Inhibition of Dipeptidyl Peptidase IV: Outcomes on Renal Sodium Excretion
Background: Dedicated renal hemodynamic and renal function studies are lacking for DPP-4 inhibitors in patients with Type 2 diabetes; accordingly little is known regarding the mechanisms mediating the renal effects of DPP-4 inhibitors in humans.
Objectives: To evaluate the effect of DPP-4 inhibition acutely (single dose) and following short-term therapy (28 days) on renal sodium handling and renal hemodynamics and function in patients with type 2 diabetes and systolic hypertension.
Design: double-blind, randomized, placebo-controlled trial, Phase IV.
Patient population: 32 patients with Type 2 diabetes, HbA1c (6.5%-9%), with systolic blood pressure ranging from 120-160 mmHg.
Intervention: subjects will be randomized (1:1) to either sitagliptin (100 mg daily) or to placebo (1 tablet daily) for 28 days.
Endpoints: Fractional excretion of sodium, renal function, and renal hemodynamics.
Studie Overzicht
Toestand
Conditie
Interventie / Behandeling
Gedetailleerde beschrijving
Background: DPP-4 inhibition improves glycemic control, modestly reduces blood pressure and may also reduce albuminuria in patients with Type 2 diabetes; effects which occur without significantly modifying heart rate or body weight. While preclinical studies have demonstrated that DPP-4 inhibition acutely increases urinary sodium excretion in addition to other favorable renal effects (anti-inflammatory, anti-proteinuric), few studies have examined the renal effects of DPP-4 inhibition either acutely or following short-term therapy in humans with type 2 diabetes. Considering the world-wide prevalence of Type 2 diabetes and the increasing use of DPP-4 inhibitors amongst patients, it is important to ascertain potential non-glycemic effects of DPP-4 inhibitors including those within the kidney.
Study Objectives: To determine effect(s) of DPP-4 inhibition on tubular sodium handling, renal hemodynamics, and renal function.
Study Design: double-blind, randomized, placebo-controlled trial, Phase IV.
Study Patients: 32 patients with Type 2 Diabetes and Systolic Hypertension (SBP 120-160 mmHg).
Endpoints: Fractional excretion of sodium, renal function (measured GFR), renal hemodynamics (effective renal plasma flow, filtration fraction, renal blood flow, renal vascular resistance), systemic hemodynamics (non-invasive cardiac monitoring), plasma neurohormones, urinary vasoactive mediators, markers of free radical stress.
Studietype
Inschrijving (Werkelijk)
Fase
- Fase 4
Contacten en locaties
Studie Locaties
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Ontario
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Toronto, Ontario, Canada, M5G 2N2
- University Health Network - Division of Nephrology
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Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Beschrijving
Inclusion Criteria:
- Individuals of 18-70 years of age,
- with Type 2 Diabetes,
- with an HbA1c (6.5%-9%),
- and with a systolic blood pressure (120-160 mmHg).
Exclusion Criteria:
Individuals with:
- Type 1 Diabetes,
- eGFR <50mL/min/1.73m,
- pregnancy or breast feeding,
- significant cardiac, pulmonary or liver disease,
- prior history of pancreatitis, medullary thyroid cancer, multiple endocrine neoplasia syndromes,
- SBP >161 mmHg, 7) DBP >100 mmHg,
- alcohol or substance abuse,
- states of secondary hypertension.
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Ander
- Toewijzing: Gerandomiseerd
- Interventioneel model: Parallelle opdracht
- Masker: Verdrievoudigen
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
|---|---|
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Experimenteel: Experimental arm
sitagliptin (DPP-4 inhibitor) oral tablet (100 mg); Januvia; administered once daily for 28 days
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Oral DPP-4 inhibitor, 100 mg tablet administered once daily for 28 days
Andere namen:
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Placebo-vergelijker: Placebo arm
placebo (no medicinal ingredients) oral tablet (100 mg); administered once daily for 28 days
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Oral tablet (no medicinal ingredients) administered once daily for 28 days
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Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
Percent Change in Fractional Excretion of Sodium (FENA)
Tijdsspanne: 3 Hrs post-administration after 1 month and after 1 dose
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FENA at 3Hrs post-study drug administration after 1 month compared to FENA at 3Hrs post-study drug administration after 1 dose expressed as percent change, sitagliptin vs. placebo
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3 Hrs post-administration after 1 month and after 1 dose
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Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
Change in Glomerular Filtration Rate (GFR)
Tijdsspanne: 3 Hrs post-administration after 1 month and after 1 dose
|
Measured GFR (Inulin Clearance) at 3Hrs post study-drug after 1 month compared to Measured GFR at 3Hrs post-study drug after 1 dose, sitagliptin vs. placebo
|
3 Hrs post-administration after 1 month and after 1 dose
|
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Change in Fractional Excretion of Lithium (FELi)
Tijdsspanne: 3 Hrs post-administration after 1 month and after 1 dose
|
FELi at 3 Hr post-study drug administration after 1 month compared to FELI at 3hrs post-study drug administration after 1 dose, sitagliptin vs. placebo
|
3 Hrs post-administration after 1 month and after 1 dose
|
|
Change From Baseline in SDF-1alpha^1-67 (Intact) Measured by Immunoaffinity and Tandem Mass Spectrometry
Tijdsspanne: 3 Hr vs. baseline after 1 dose
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Plasma concentration of SDF-1alpha^1-67 (intact) measured by quantitative mass spectrometry methods after antibody-based affinity enrichment, sitagliptin vs. placebo
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3 Hr vs. baseline after 1 dose
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Change From Baseline in SDF-1alpha^3-67 (Truncated) Measured by Tandem Mass Spectrometry With Antibody-based Affinity Enrichment
Tijdsspanne: 3Hrs vs baseline after 1 dose
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Plasma concentration of SDF-1alpha^3-67 (intact) measured by quantitative mass spectrometry methods after antibody-based affinity enrichment, sitagliptin vs. placebo
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3Hrs vs baseline after 1 dose
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Change in Systolic Blood Pressure (SBP), Non-invasive Cardiac Output Monitoring
Tijdsspanne: 3 Hrs post-administration after 1 month and after 1 dose
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SBP by Non-Invasive cardiac output monitoring at 3Hrs post- study drug administration after 1 month compared to SBP by Non-invasive cardiac output monitoring at 3Hrs after 1 dose, sitagliptin vs placebo
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3 Hrs post-administration after 1 month and after 1 dose
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Change in Effective Renal Plasma Flow (ERPF)
Tijdsspanne: 3 Hrs post-administration after 1 month and after 1 dose
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ERPF (para-aminohippurate clearance) 3Hrs post-study drug administration after 1 month compared to ERPF at 3Hhrs post-study drug administration after 1 dose, sitagliptin vs placebo
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3 Hrs post-administration after 1 month and after 1 dose
|
Medewerkers en onderzoekers
Medewerkers
Onderzoekers
- Studie directeur: Julie Lovshin, MD,PhD, Lunenfeld Tanenbaum Reserach Institute, Divsion of Endocrinology and Metabolism, University of Toronto
- Hoofdonderzoeker: David I Cherney, MD,PhD, Division of Nephrology, University Health Network, University of Toronto
Publicaties en nuttige links
Studie record data
Bestudeer belangrijke data
Studie start
Primaire voltooiing (Werkelijk)
Studie voltooiing (Werkelijk)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Schatting)
Updates van studierecords
Laatste update geplaatst (Werkelijk)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Aanvullende relevante MeSH-voorwaarden
- Glucosemetabolismestoornissen
- Metabole ziekten
- Endocriene systeemziekten
- Suikerziekte
- Diabetes mellitus, type 2
- Hypoglycemische middelen
- Fysiologische effecten van medicijnen
- Moleculaire mechanismen van farmacologische werking
- Enzymremmers
- Hormonen
- Hormonen, hormoonvervangers en hormoonantagonisten
- Proteaseremmers
- Incretines
- Dipeptidyl-peptidase IV-remmers
- Sitagliptinefosfaat
Andere studie-ID-nummers
- 14-8616
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