Increased Activity of a Renal Salt Transporter (ENaC) in Diabetic Kidney Disease

Sponsor
University of Southern Denmark (Other)
Overall Status
Unknown status
CT.gov ID
NCT01918488
Collaborator
Odense University Hospital (Other), Region of Southern Denmark (Other), The Ministry of Science, Technology and Innovation, Denmark (Other), Danish Heart Foundation (Other)
80
1
2

Study Details

Study Description

Brief Summary

The purpose of the study is to determine whether a diuretic drug called amiloride is capable of increasing renal salt excretion and thereby decrease blood pressure in diabetic patients with kidney disease. Our hypothesis states that amiloride is capable of reducing blood pressure in these patients and thus decrease the cardiovascular risk associated with diabetic kidney disease.

Condition or Disease Intervention/Treatment Phase
N/A

Study Design

Study Type:
Interventional
Anticipated Enrollment :
80 participants
Allocation:
Non-Randomized
Intervention Model:
Parallel Assignment
Masking:
None (Open Label)
Primary Purpose:
Basic Science
Official Title:
Increased Activity of the Epithelial Sodium Channel (ENaC) in Diabetic Nephropathy
Study Start Date :
Oct 1, 2013
Anticipated Primary Completion Date :
Dec 1, 2014

Arms and Interventions

Arm Intervention/Treatment
Experimental: Nephropathy

Diabetics with diabetic nephropathy receiving first a standardized salt diet (200 mmol NaCl/day) for 4 days and then amiloride tablet 20 mg two times daily (morning and afternoon) for 2 days.

Dietary Supplement: Standardized salt diet
200 mmol NaCl per day given as three meals daily for 4 consecutive days.

Drug: Amiloride
Amiloride tablet 20 mg two times daily (morning and afternoon) for two consecutive days.
Other Names:
  • Triamterene
  • Experimental: Control

    Diabetics without nephropathy receiving a standardized salt diet (200 mmol NaCl/day) for 4 days, then amiloride tablet 20 mg two times daily (morning and afternoon) for 2 days.

    Dietary Supplement: Standardized salt diet
    200 mmol NaCl per day given as three meals daily for 4 consecutive days.

    Drug: Amiloride
    Amiloride tablet 20 mg two times daily (morning and afternoon) for two consecutive days.
    Other Names:
  • Triamterene
  • Outcome Measures

    Primary Outcome Measures

    1. 24-hour urinary sodium excretion induced by amiloride [Change from baseline urinary sodium excretion at 24 hours after amiloride administration]

    Secondary Outcome Measures

    1. Office blood pressure measurements [Change from baseline office blood pressure at day 4 of salt diet and at 24 hours after amiloride administration]

    Eligibility Criteria

    Criteria

    Ages Eligible for Study:
    18 Years to 90 Years
    Sexes Eligible for Study:
    All
    Accepts Healthy Volunteers:
    No
    Inclusion Criteria:
    • Type 1 diabetes

    • Negative pregnancy test at inclusion and taking contraceptive medication

    • One group with diabetic nephropathy and overt proteinuria

    • One normoalbuminuric group without nephropathy

    • Creatinine clearance > 40 ml/min

    Exclusion Criteria:
    • Type 2 diabetes

    • Receiving amiloride, glucocorticoids, aldosterone or spironolactone

    • Clinically relevant organic or systemic disease including malignancy

    Contacts and Locations

    Locations

    Site City State Country Postal Code
    1 Cardiovascular and Renal Research Odense Denmark DK-5000

    Sponsors and Collaborators

    • University of Southern Denmark
    • Odense University Hospital
    • Region of Southern Denmark
    • The Ministry of Science, Technology and Innovation, Denmark
    • Danish Heart Foundation

    Investigators

    • Principal Investigator: Henrik Andersen, MD, University of Southern Denmark
    • Study Director: Jan Erik Henriksen, MD, PhD, Odense University Hospital
    • Study Director: Claus Bistrup, MD, PhD, Odense University Hospital
    • Study Director: Boye L Jensen, MD, PhD, University of Southern Denmark

    Study Documents (Full-Text)

    None provided.

    More Information

    Publications

    Responsible Party:
    Henrik Andersen, MD, MD, PhD student, University of Southern Denmark
    ClinicalTrials.gov Identifier:
    NCT01918488
    Other Study ID Numbers:
    • 2013-052
    • 13-04-R94-A4513-22770
    First Posted:
    Aug 7, 2013
    Last Update Posted:
    Oct 16, 2013
    Last Verified:
    Oct 1, 2013
    Keywords provided by Henrik Andersen, MD, MD, PhD student, University of Southern Denmark
    Additional relevant MeSH terms:

    Study Results

    No Results Posted as of Oct 16, 2013