The Effect of Renin Angiotensin System Blockage (RAS) Blockade On PTX3 Levels In Diabetic Patients With Proteinuria

May 7, 2008 updated by: Gulhane School of Medicine
Long pentraxin 3 (PTX3) is a recently discovered multimeric inflammatory mediator structurally linked to CRP and serum amyloid P-component. There is no data about the effects of Renin angiotensin system blockage (RAS) on PTX3 levels in diabetic patients with proteinuria. The aim of this study was to find out whether the beneficial effects of RAS blockage in diabetic proteinuria has any relation with the alteration of PTX3 levels. We searched for the effects of ACE inhibitor ramipril on the clinical and laboratory parameters of diabetic patients with proteinuria.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

The patients who were non-obese (BMI<30kg/m2), non dyslipidemic (total cholesterol <200mg/dl, Triglyceride<150mg/dl), and free of cardiovascular events (negative medical history, negative ECG findings) were investigated for enrollment. CKD stage 1 patients older than 18 years of age and willing to participate to the study were screened. From the 266 patients with established type 2 diabetes mellitus, 141 had proteinuria and/or hypertension (24 h protein excretion 1-2 g/day, systolic blood pressures ≥140mmHg and/or diastolic blood pressures ≥ 90 mmHg, respectively). All cases were first referrals and at the time of the study all were off treatment. Patients with history of coronary artery disease, smokers and those taking statins or renin-angiotensin blockers were excluded because of the effect of these factors on endothelial dysfunction. Of 141 screened patients 60 met the study criteria and were included in this study. The duration of proteinuria and diabetic nephropathy after initial diagnosis was not known.

The exclusion criteria were as follows: A)Nephrotic syndrome, B)coronary heart disease (patients with ischemic ST-T alterations and voltage criteria for LVH on electrocardiogram, and with history of revascularization or myocardial infarction), C) elevated liver enzymes (AST or ALT levels ≥ 40U/L) and D) renal failure (serum creatinine levels > 1.3 mg/dl).

In order to evaluate the effect of RAS blockade on plasma PTX3 concentrations, patients with proteinuria were given an ACE inhibitor (ramipril 5 mg/day) for 12 weeks. The effect of RAS blockade on insulin sensitivity and proteinuria was also investigated.

After the intervention period, blood samples were obtained for assay of plasma PTX3 concentrations, HbA1c , and insulin resistance scores (HOMA-IR). Urine samples were also collected over a 24-hour period to determine the degree of proteinuria.

Study Type

Interventional

Enrollment (Anticipated)

60

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

  • Turkey
      • Ankara, Turkey, 06018
        • Gulhane School of Medicine

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 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • CKD stage 1 patients
  • Older than 18 years of age
  • Type 2 Diabetic patients
  • Proteinuria

Exclusion Criteria:

  • History of coronary artery disease
  • Smokers
  • Taking statins or renin-angiotensin blockers

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: Prevention
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: Single

Collaborators and Investigators

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

Sponsor

Gulhane School of Medicine

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

January 1, 2006

Primary Completion

March 1, 2008

Study Completion

March 1, 2008

Study Registration Dates

First Submitted

May 6, 2008

First Submitted That Met QC Criteria

May 7, 2008

First Posted (Estimate)

May 8, 2008

Study Record Updates

Last Update Posted (Estimate)

May 8, 2008

Last Update Submitted That Met QC Criteria

May 7, 2008

Last Verified

May 1, 2008

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • GATARAM2008

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.

Subscribe