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Showing 1–24 of 261 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Vascular Endothelial Function Clear all
Completed Phase 2 Interventional Results available

A Phase 2 Trial of IW-1973, A Stimulator of Soluble Guanylate Cyclase (sGC), in Patients With Stable Type 2 Diabetes and Hypertension

NCT02906579
View directory record Official record
Conditions
Diabetes Mellitus, Type 2, Hypertension
Interventions
Matching Placebo, IW-1973
Drug
Lead sponsor
Cyclerion Therapeutics
Industry
Eligibility
30 Years to 65 Years
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Apr 15, 2020 · Synced Jul 23, 2026, 10:06 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Citrulline Supplementation On Vascular Responsiveness and Function in Postmenopausal Women

NCT05600413
View directory record Official record
Conditions
Menopause
Interventions
L-Citrulline, Placebo
Dietary Supplement
Lead sponsor
Texas Tech University
Other
Eligibility
50 Years to 79 Years · Female only
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Oct 30, 2022 · Synced Jul 23, 2026, 10:06 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Biomarkers for Cardiovascular Disease

NCT00109018
View directory record Official record
Conditions
Coronary Artery Disease
Interventions
Not listed
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
21 Years and older
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2009
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jul 23, 2026, 10:06 AM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

Vascular Dysfunction in Human Obesity Hypertension

NCT01983462
View directory record Official record
Conditions
Obesity, Prehypertension, Hypertension
Interventions
Clonidine, Hydrochlorothiazide, Placebo
Drug
Lead sponsor
Gary L. Pierce
Other
Eligibility
18 Years to 79 Years
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2020
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Apr 13, 2023 · Synced Jul 23, 2026, 10:06 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Blood Flow Restriction Resistance Training Intervention on Vascular Function

NCT05451641
View directory record Official record
Conditions
Endothelial Function
Interventions
Blood flow restriction resistance training
Behavioral
Lead sponsor
Hirofumi Tanaka
Other
Eligibility
18 Years to 40 Years
Enrollment
26 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jun 9, 2026 · Synced Jul 23, 2026, 10:06 AM EDT
Completed Not applicable Interventional

Pilot Study Lp299v Supplementation in Chronic Heart Failure

NCT05752760
View directory record Official record
Conditions
Heart Failure, Heart Failure With Reduced Ejection Fraction, Heart Failure, Systolic, Heart Failure With Preserved Ejection Fraction, Heart Failure, Diastolic
Interventions
Lactobacillus Plantarum 299v Freeze Dried Capsule, Freeze Dried Potato Starch Capsule
Other
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
21 Years to 89 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Jul 23, 2026, 10:06 AM EDT
Completed Phase 4 Interventional Results available

Investigation of the Athero-Protective Effects of Clopidogrel

NCT01283282
View directory record Official record
Conditions
Coronary Artery Disease
Interventions
Clopidogrel, Placebo
Drug
Lead sponsor
Emory University
Other
Eligibility
21 Years to 80 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Apr 30, 2015 · Synced Jul 23, 2026, 10:06 AM EDT
Enrolling by invitation No phase listed Observational Accepts healthy volunteers

Blood Collection for Research Related to Certain Diseases Involving Blood Vessels

NCT00047996
View directory record Official record
Conditions
Sickle Cell Disease
Interventions
Not listed
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years to 100 Years
Enrollment
2,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2002
U.S. locations
2
States / cities
Bethesda, Maryland • Fairfax, Virginia
Source: ClinicalTrials.gov public record
Updated Jun 29, 2026 · Synced Jul 23, 2026, 10:06 AM EDT
Terminated No phase listed Observational Accepts healthy volunteers

Blood Vessel Function in Adolescents and Women With Polycystic Ovary Syndrome

NCT01615562
View directory record Official record
Conditions
Polycystic Ovary Syndrome (PCOS)
Interventions
Not listed
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
14 Years to 40 Years · Female only
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2015
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Dec 13, 2015 · Synced Jul 23, 2026, 10:06 AM EDT
Terminated Phase 1 Interventional

Sildenafil to Treat HIV-Associated Pulmonary Hypertension

NCT00327080
View directory record Official record
Conditions
HIV
Interventions
MRI, L-NMMA, Acetylcholine
Procedure · Drug
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 16, 2019 · Synced Jul 23, 2026, 10:06 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Green Tea Confections For Managing Postprandial Hyperglycemia-Induced Vascular Endothelial Dysfunction

NCT01857258
View directory record Official record
Conditions
Hyperglycemia, Cardiovascular Disease
Interventions
Green Tea Concentrate
Dietary Supplement
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 30 Years · Male only
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 15, 2017 · Synced Jul 23, 2026, 10:06 AM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

Effect of Age and Fitness on Vascular Function and Oxidative Stress During Acute Inflammation

NCT03889158
View directory record Official record
Conditions
Aging, Inflammation
Interventions
Typhoid Vaccine, Ascorbic Acid
Biological · Dietary Supplement
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years to 75 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 11, 2021 · Synced Jul 23, 2026, 10:06 AM EDT
Not listed Not applicable Interventional

Clinical Trial to Assess the Effects of Low-fat Dairy on Systolic Blood Pressure

NCT01463085
View directory record Official record
Conditions
Hypertension
Interventions
Low-fat dairy
Other
Lead sponsor
Dairy Research Institute
Other
Eligibility
20 Years to 69 Years
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Glen Ellyn, Illinois
Source: ClinicalTrials.gov public record
Updated May 23, 2012 · Synced Jul 23, 2026, 10:06 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Relaxation Response Training to Treat Hypertension

NCT01263743
View directory record Official record
Conditions
Hypertension
Interventions
Relaxation Response
Behavioral
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 70 Years
Enrollment
58 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 18, 2016 · Synced Jul 23, 2026, 10:06 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Blood Flow and Vascular Function in Cystic Fibrosis

NCT02057458
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Sildenafil (Acute-1 hour), Sildenafil (Subchronic-4 weeks), Placebo
Drug
Lead sponsor
Augusta University
Other
Eligibility
18 Years and older
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2018
U.S. locations
1
States / cities
Augusta, Georgia
Source: ClinicalTrials.gov public record
Updated Apr 23, 2020 · Synced Jul 23, 2026, 10:06 AM EDT
Completed Not applicable Interventional

Urolithin A Supplementation in Middle-aged Adults With Obesity

NCT05921266
View directory record Official record
Conditions
Obesity, Vascular Dementia, Cognitive Impairment
Interventions
Urolithin A, Placebo
Dietary Supplement · Other
Lead sponsor
University of Oklahoma
Other
Eligibility
40 Years to 64 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Jun 25, 2025 · Synced Jul 23, 2026, 10:06 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Effect of Regular Exercise on Vascular Function and Cardiovascular Risk in a Sedentary Work Force

NCT00246883
View directory record Official record
Conditions
Vascular Formation
Interventions
Exercise
Procedure
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
Not listed
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2009
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jul 23, 2026, 10:06 AM EDT
Completed No phase listed Observational

Effect of Aromatase Inhibitor Therapy on Blood Vessel Function in Postmenopausal Women With Breast Cancer

NCT00719966
View directory record Official record
Conditions
Breast Cancer
Interventions
anastrozole, exemestane, letrozole, assessment of therapy complications
Drug · Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
40 Years to 80 Years · Female only
Enrollment
109 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2020
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 1, 2024 · Synced Jul 23, 2026, 10:06 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Endothelin Receptor Function and Acute Stress

NCT02116335
View directory record Official record
Conditions
Hypertension
Interventions
Bosentan, Placebo
Drug
Lead sponsor
Augusta University
Other
Eligibility
18 Years to 50 Years
Enrollment
320 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2026
U.S. locations
1
States / cities
Augusta, Georgia
Source: ClinicalTrials.gov public record
Updated Jan 27, 2025 · Synced Jul 23, 2026, 10:06 AM EDT
Active, not recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

Fisetin to Improve Vascular Function in Older Adults

NCT06133634
View directory record Official record
Conditions
Aging, Endothelial Dysfunction, Arterial Stiffness
Interventions
Fisetin, Placebo
Dietary Supplement · Other
Lead sponsor
University of Colorado, Boulder
Other
Eligibility
65 Years and older
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Boulder, Colorado
Source: ClinicalTrials.gov public record
Updated Nov 11, 2025 · Synced Jul 23, 2026, 10:06 AM EDT
Completed Phase 2 Interventional Results available

Thromboxane Receptor Antagonist to Improve Endothelial Function

NCT03962855
View directory record Official record
Conditions
Cardiovascular Diseases, Vascular Dilation
Interventions
Ifetroban Sodium, Placebo
Drug
Lead sponsor
Jeffrey Rade
Other
Eligibility
18 Years to 80 Years
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 4, 2024 · Synced Jul 23, 2026, 10:06 AM EDT
Completed Phase 4 Interventional Results available

The Effect of Exenatide Compared to Lantus Insulin on Vascular Function in Type 2 Diabetes

NCT00353834
View directory record Official record
Conditions
Type 2 Diabetes Mellitus
Interventions
Exenatide, Glargine Insulin
Drug
Lead sponsor
Joslin Diabetes Center
Other
Eligibility
18 Years to 75 Years
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 8, 2018 · Synced Jul 23, 2026, 10:06 AM EDT
Completed Phase 2Phase 3 Interventional Results available

Risk of Oxygen During Cardiac Surgery Trial

NCT02361944
View directory record Official record
Conditions
Cardiac Surgery
Interventions
Oxygen - normoxia, Oxygen - hyperoxia
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years and older
Enrollment
213 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 31, 2024 · Synced Jul 23, 2026, 10:06 AM EDT
Completed Not applicable Interventional Results available

Vitamin D Repletion in Coronary Artery Disease

NCT01570309
View directory record Official record
Conditions
Vitamin D Deficiency, Coronary Artery Disease, Endothelial Dysfunction, Inflammation
Interventions
Ergocalciferol, Sugar pill
Drug · Other
Lead sponsor
Seth I. Sokol, M.D.
Other
Eligibility
18 Years and older
Enrollment
96 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
2
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Oct 9, 2013 · Synced Jul 23, 2026, 10:06 AM EDT