Growth Hormone's Effect on the Cardiovascular System

July 2, 2007 updated by: Vanderbilt University

The Role of Growth Hormone in Cardiovascular Health

To evaluate specific markers of cardiovascular risk before and after growth hormone replacement therapy in a population of growth hormone deficient adults, as compared to an age, gender, and BMI-matched healthy population.

Study Overview

Status

Terminated

Conditions

Intervention / Treatment

Detailed Description

Growth hormone deficiency (GHD) is associated with increased cardiovascular morbidity and mortality. The effects of such a deficiency include decreased exercise capacity and tolerance, impaired cardiac function, a central fat redistribution, increased peripheral arterial resistance, and an unfavorable lipid profile. These effects have been found to be reversed with appropriate replacement therapy with recombinant human growth hormone. We plan to utilize several experimental systems to further investigate the role of growth hormone (GH) in maintaining cardiovascular health. In particular, we would like to further understand the interaction of GH with Plasminogen-activator-inhibitor-1 (a major activator of the fibrinolytic system) as well as the role of GH in the maintenance of vascular function.

Study Type

Observational

Enrollment

26

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

  • United States
    • Tennessee
      • Nashville, Tennessee, United States, 37232
        • Vanderbilt University Medical Center

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:

  • Adult between the ages of 18 and 65
  • Documented Growth Hormone Deficiency as defined by a peak Growth Hormone during a GHRH-Arginine Stimulation test not exceeding 9.5 ng/ml

Exclusion Criteria:

  • Personal history of cardiovascular disease (previous myocardial infarction or known coronary artery disease) or diagnosis of heart disease between study visits.
  • Personal history of diabetes mellitus or development of diabetes between study visits.
  • Initiation of an anti-cholesterol medication or anti-hypertensive between baseline and follow-up study visit.
  • Initiation of regular tobacco use between baseline and follow-up study visit.
  • Pregnancy or nursing
  • Current daily use of any drug known to affect the fibrinolytic system: Aspirin, Aggrenox, Plavix, Persantine, Ticlid, Pletal, Trental, Lovenox, Coumadin, Agrylin, and Hydroxyurea.

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

Collaborators and Investigators

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

Sponsor

Vanderbilt University

Collaborators

Pfizer
National Center for Research Resources (NCRR)

Investigators

  • Principal Investigator: Doug Vaughan, MD, Vanderbilt University Medical Center

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

August 1, 2005

Study Completion (Actual)

December 1, 2006

Study Registration Dates

First Submitted

November 8, 2006

First Submitted That Met QC Criteria

November 8, 2006

First Posted (Estimate)

November 9, 2006

Study Record Updates

Last Update Posted (Estimate)

July 3, 2007

Last Update Submitted That Met QC Criteria

July 2, 2007

Last Verified

July 1, 2007

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 050045
  • 1422

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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