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Diabetes MellitusNCT00214825

Aldosterone and Vascular Disease in Diabetes Mellitus

A study testing eplerenone and Hydrochlorothiazide in people with Diabetes Mellitus and Endothelial Dysfunction, run by Brigham and Women's Hospital at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Specific aims for this proposal are to determine in patients with diabetes mellitus the effects of an aldosterone receptor antagonist on: 1. Coronary microvascular function assessed by MRI perfusion reserve, 2. Endothelial dysfunction assessed by brachial artery reactivity studies, and 3. Read more about this study

Who is it for?
Ages 21 to 64 years
What is being tested?
eplerenone and Hydrochlorothiazide
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
46 participants
Where
1 siteUnited States
Study dates
Aug 2003to Mar 2006
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 21 to 64 years
  • All sexes
  • No healthy volunteers
  • Adult

Who may be able to join

  • Men and women (21-64 years old) with type 1 or type 2 diabetes mellitus and albuminuria (over 30 mg/g creatinine).

Who cannot join

  • Exclusion criteria include: (1) subjects without hypertension who have baseline systolic blood pressure <100 mmHg, (2) severe hypertension (blood pressure must be well-controlled on 3 antihypertensive agents or <150/100 mmHg on £2 antihypertensive agents), (3) ischemic changes on resting electrocardiogram, (4) clinical evidence of heart disease, cerebrovascular or peripheral vascular disease, (5) significant cardiac arrhythmias, (6) aortic stenosis, (7) 2nd or 3rd degree atrio-ventricular block, sinus node disease, or symptomatic bradycardia, (8) bronchospastic lung disease with active wheezing, (9) known hypersensitivity to any of the study drugs, (10) any contraindication to MRI, (11) serum creatinine ³ 1.5 mg/dL, (12) serum potassium ³ 5.0 mmol/L, (13) current smoker, (14) Serum transaminases greater than twice the upper limit of normal, (15) a history of gout, (16) pregnancy, and (17) other active medical problems detected by examination or laboratory testing.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Brigham and Women's Hospital

    Boston, Massachusetts, 02115

Other trials in United States

About this study

Specific aims for this proposal are to determine in patients with diabetes mellitus the effects of an aldosterone receptor antagonist on:

  1. Coronary microvascular function assessed by MRI perfusion reserve,
  2. Endothelial dysfunction assessed by brachial artery reactivity studies, and
  3. Inflammation assessed by blood measurements of c-reactive protein (CRP), monocyte chemoattractant protein-1 (MCP-1), and plasminogen activator inhibitor-1 (PAI-1).
Read the detailed description

Recent human and animal studies suggest that activation of the mineralocorticoid receptor (MR) by aldosterone, the final product of the renin-angiotensin-aldosterone system, causes microvascular damage, vascular inflammation, and endothelial dysfunction. Angiotensin converting enzyme (ACE) inhibitors and angiotensin receptor blockers (ARBs) are unable to provide long-term aldosterone suppression. Therefore, we hypothesize that activation of the MR contributes to progression of vascular disease in patients with diabetes already using ACE inhibitor therapy.

Specific aims for this proposal are to determine in patients with type 1 or type 2 diabetes mellitus and proteinuria, already receiving ACE inhibitor or ARB therapy, the effects of an aldosterone receptor antagonist vs. hydrochlorothiazide on:

  1. Coronary microvascular function assessed by MRI perfusion reserve,
  2. Endothelial dysfunction assessed by brachial artery reactivity studies,
  3. Inflammation and cellular oxidative stress and injury, assessed by c-reactive protein (CRP), MCP-1, plasminogen activator inhibitor-1 (PAI-1).
  4. Proteinuria and whether there is a differential effect when a MR antagonist or HCTZ is added to the ACE inhibitor therapy.

This is a double-blind, randomized, cross-over study of men and women (21-64 years old) with type 1 or type 2 diabetes mellitus and albuminuria (³30 mg/g creatinine). Participants will be randomized to a MR antagonist + placebo or HCTZ + potassium supplementation for 6 weeks. The MR antagonist arm will receive eplerenone 50 mg daily. The HCTZ arm will receive HCTZ 12.5 mg with potassium 10 Meq daily. Amlodipine 5 to 10 mg daily will be added during run phase to control blood pressure. Blood pressure goal is less than 130/80 mm Hg. There will be a 4-week washout period before the patients are crossed-over to the other study arm. MRI perfusion reserve, brachial artery reactivity, and blood samples will be obtained at the beginning and end of each treatment arm.

Being tested
eplerenone, Hydrochlorothiazide
Medical subject headings
Diabetes Mellitus, Albuminuria

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • eplerenoneDrug

    50 mg daily for 6 weeks with placebo

  • HydrochlorothiazideDrug

    HCTZ 12.5 mg with potassium (10 mEq) daily for 6 weeks

Study groups in NCT00214825
Study groupRoleWhat they receive
1ExperimentalMR antagonist (Eplerenone) + placebo
Receives: Drug: eplerenone
2Placebo comparatorHydrochlorothiazide plus potassium
Receives: Drug: Hydrochlorothiazide

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Coronary microvascular function assessed by myocardial perfusion reserve measured by MRI

    Measured: 20 weeks

Secondary outcomes (3)
  1. Endothelial dysfunction assessed by brachial artery reactivity

    Measured: 20 weeks

  2. Inflammation and cellular oxidative stress and injury, assessed by CRP, MCP-1, PAI-1, nephrin, cystanin C, F2 isoprostanes, and urinary 12-HETE

    Measured: 20 weeks

  3. Proteinuria

    Measured: 20 weeks

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted22 Sep 2005 (estimated)
  2. Study startAug 2003
  3. Primary completionMar 2006
  4. Study completionMar 2006

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Crossover
Masking
Double blind
Enrolment
46 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00214825
Sponsor's protocol ID
2003-P-001273 BWH
Status last verified
Dec 2007
First submitted
20 Sep 2005
Last updated
3 Jan 2008
Results posted
No

Publications

  • Joffe HV, Kwong RY, Gerhard-Herman MD, Rice C, Feldman K, Adler GK. Beneficial effects of eplerenone versus hydrochlorothiazide on coronary circulatory function in patients with diabetes mellitus. J Clin Endocrinol Metab. 2007 Jul;92(7):2552-8. doi: 10.1210/jc.2007-0393. Epub 2007 May 8.

    PubMed 17488800

Questions about this trial

What is this clinical trial studying?

A study testing eplerenone and Hydrochlorothiazide in people with Diabetes Mellitus and Endothelial Dysfunction, run by Brigham and Women's Hospital at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 3 Jan 2008. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Coronary microvascular function assessed by myocardial perfusion reserve measured by MRI (time frame: 20 weeks). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00214825, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 3 Jan 2008.

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