Renal and Hormonal Effects of Pioglitazone

March 24, 2010 updated by: University Hospital, Geneva

Effects of the PPAR-gamma Agonist Pioglitazone on Renal and Hormonal Responses to Salt in Diabetic and Hypertensive Subjects

This study examines the effects of pioglitazone on renal sodium handling in subjects prone to insulin resistance, i.e. diabetic and/or hypertensive subjects.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Aim: Glitazones are powerful insulin sensitizers prescribed for the treatment of type 2 diabetes. Their use is however associated with fluid retention and an increased risk of congestive heart failure. We previously demonstrated that pioglitazone increases proximal sodium reabsorption in healthy volunteers. This study examines the effects of pioglitazone on renal sodium handling in subjects prone to insulin resistance, i.e. diabetic and/or hypertensive subjects.

Methods: In this double-blind, randomized, placebo-controlled, four-way, cross-over study, we examined the effects of pioglitazone (45mg daily during 6 weeks) or placebo on renal, systemic and hormonal responses to changes in sodium intake in 16 individuals, 8 with type 2 diabetic and 8 with hypertension.

Study Type

Interventional

Enrollment (Actual)

16

Phase

  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Switzerland
      • Geneva, Switzerland, 1211
        • Pechère-Bertschi Antoinette

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 70 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Type II Diabetes
  • Hypertension

Exclusion Criteria:

  • Cardiac or renal diseases
  • Anaemia
  • Drugs like aspirin, non steroidal anti-inflammatory drugs and hormonal replacement therapy.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Placebo Comparator: Pioglitazone
placebo-controlled, randomized, cross-over study
Drug: Pioglitazone
placebo-controlled, randomized, cross-over study was to explore the effects of pioglitazone (45 mg q.d. for 6 weeks) on the renal, hormonal and blood pressure responses to changes in sodium intake in a population prone to insulin resistance
Other Names:
  • Actos
Drug: Metformin
placebo-controlled, randomized, cross-over study was to explore the effects of pioglitazone (45 mg q.d. for 6 weeks) on the renal, hormonal and blood pressure responses to changes in sodium intake in a population prone to insulin resistance
Other Names:
  • Glucophage
  • Glumetza
  • Fortamet
  • Riomet
Placebo Comparator: Metformine
placebo-controlled, randomized, cross-over study was to explore the effects of pioglitazone (45 mg q.d. for 6 weeks) on the renal, hormonal and blood pressure responses to changes in sodium intake in a population prone to insulin resistance
Drug: Metformin
placebo-controlled, randomized, cross-over study was to explore the effects of pioglitazone (45 mg q.d. for 6 weeks) on the renal, hormonal and blood pressure responses to changes in sodium intake in a population prone to insulin resistance
Other Names:
  • Glucophage
  • Glumetza
  • Fortamet
  • Riomet

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Effects of Pioglitazone on Renal Hemodynamics
Time Frame: 2008
At the end of each treatment diet phase, renal clearances were performed for the determination of GFR and RBF
2008
Effects of Pioglitazone on Sodium and Lithium Clearances
Time Frame: 2007
At the end of each treatment and diet phase, 24 urine collections were collected for the determination of sodium and lithium clearances
2007
Effects of Pioglitazone on 24h Blood Pressure Control
Time Frame: march 2009
24 hour blood pressure measurements were performed after each treatment/diet phase
march 2009

Secondary Outcome Measures

Outcome Measure
Time Frame
Effects of Pioglitazone on Salt Sensitivity
Time Frame: 2009
2009

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University Hospital, Geneva

Collaborators

University of Lausanne Hospitals

Investigators

  • Study Director: Antoinette Pechere-Bertschi, MD, University Hospital, Geneva

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

October 1, 2005

Primary Completion (Actual)

October 1, 2007

Study Completion (Actual)

October 1, 2007

Study Registration Dates

First Submitted

March 19, 2010

First Submitted That Met QC Criteria

March 19, 2010

First Posted (Estimate)

March 22, 2010

Study Record Updates

Last Update Posted (Estimate)

April 8, 2010

Last Update Submitted That Met QC Criteria

March 24, 2010

Last Verified

January 1, 2009

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • FDAAA

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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