The Role of Nitric Oxide Synthase in Circulating Progenitor Cell Function

NCT ID: NCT00627068

Last Updated: 2011-09-20

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

Get a concise snapshot of the trial, including recruitment status, study phase, enrollment targets, and key timeline milestones.

Recruitment Status

COMPLETED

Total Enrollment

60 participants

Study Classification

OBSERVATIONAL

Study Start Date

2007-07-31

Study Completion Date

2010-12-31

Brief Summary

Review the sponsor-provided synopsis that highlights what the study is about and why it is being conducted.

Our main hypothesis is that EPC function is impaired in some populations with high cardiovascular risk as a result of reduced eNOS-dependent NO production.

Detailed Description

Dive into the extended narrative that explains the scientific background, objectives, and procedures in greater depth.

To determine if a correlation exists between EPC function and eNOS-dependent NO production in EPCs from populations with high versus low cardiovascular risk:

1. High and low cardiovascular risk subjects will be identified based on age or history of cardiovascular disease. Endothelial function will be measured by ultrasound.
2. EPCs will be isolated from peripheral blood of these subjects. EPC function will be assessed by measuring adhesion to endothelium, migration, proliferation, and differentiation, and compared to their expression and activity of eNOS.

Conditions

See the medical conditions and disease areas that this research is targeting or investigating.

Cardiovascular Disease

Study Design

Understand how the trial is structured, including allocation methods, masking strategies, primary purpose, and other design elements.

Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

Review each arm or cohort in the study, along with the interventions and objectives associated with them.

1

High cardiovascular risk age over 61 years.

No interventions assigned to this group

2

Low Cardiovascular risk age over 61.

No interventions assigned to this group

3

High cardiovascular risk age over 25 but under 61.

No interventions assigned to this group

4

Low cardiovascular risk age over 25 under 61.

No interventions assigned to this group

Eligibility Criteria

Check the participation requirements, including inclusion and exclusion rules, age limits, and whether healthy volunteers are accepted.

Inclusion Criteria

* Willing and able to give written informed consent and comply with study requirements
* Adult of 18 years or older
* Subjects willing to provide blood and tissue samples

Exclusion Criteria

* Failure to give informed consent.
* Those unable to consent for themselves.
* Those who cannot read English.
* Patients on Viagra, Levitra, or Cialis
* Patients with malignant disease
* Patients with hematological abnormalities
* Patients with fevers of unknown origin
* Severe comorbidity or alcohol/drug dependence
* Women who are post-menopausal and on hormone replacement therapy, or premenopausal and on birth control pills (premenopausal women will be screened verbally and then by assay of LH and FSH levels in blood samples to identify women in the follicular phase of their menstrual cycle, to reduce variability)
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

Meet the organizations funding or collaborating on the study and learn about their roles.

University of California, San Francisco

OTHER

Sponsor Role lead

Responsible Party

Identify the individual or organization who holds primary responsibility for the study information submitted to regulators.

Yerem Yeghiazarians

Assistant Clinical Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

Learn about the lead researchers overseeing the trial and their institutional affiliations.

Yerem Yeghiazarians, M.D

Role: PRINCIPAL_INVESTIGATOR

University of California, San Francisco

Locations

Explore where the study is taking place and check the recruitment status at each participating site.

UCSF, Department of Cardiology

San Francisco, California, United States

Site Status

Countries

Review the countries where the study has at least one active or historical site.

United States

Other Identifiers

Review additional registry numbers or institutional identifiers associated with this trial.

HL086917

Identifier Type: -

Identifier Source: org_study_id

More Related Trials

Additional clinical trials that may be relevant based on similarity analysis.

Blood Vessel Study
NCT01524549 COMPLETED