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ClinicalTrials.gov public records Last synced Jul 22, 2026, 11:16 PM EDT

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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Endothelium-Derived Relaxing Factor Clear all
Completed No phase listed Observational Accepts healthy volunteers

Nitric Oxide, LPS and the Pathogenesis of Asthma Phase 1

NCT00671229
View directory record Official record
Conditions
Healthy, Asthma
Interventions
Not listed
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
18 Years to 40 Years
Enrollment
420 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2008
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 13, 2015 · Synced Jul 22, 2026, 11:16 PM EDT
Completed No phase listed Observational

The Use of Fractionated Exhaled Nitric Oxide in the Diagnosis and Assessment of Disease Activity of Eosinophilic Esophagitis (Validation Phase)

NCT04941742
View directory record Official record
Conditions
Eosinophilic Esophagitis
Interventions
Not listed
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
5 Years to 18 Years
Enrollment
71 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 9, 2024 · Synced Jul 22, 2026, 11:16 PM 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 22, 2026, 11:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of Dietary Nitric Oxide and Anthocyanins on Anaerobic Exercise Performance

NCT03631394
View directory record Official record
Conditions
Exercise
Interventions
beetroot and anthocyanin, beetroot and placebo
Other
Lead sponsor
Loma Linda University
Other
Eligibility
21 Years to 35 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated May 14, 2019 · Synced Jul 22, 2026, 11:16 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Development of a Breath Analyzer for Asthma Screening

NCT00386737
View directory record Official record
Conditions
Asthma
Interventions
Not listed
Lead sponsor
Ekips Technologies
Industry
Eligibility
4 Years to 65 Years
Enrollment
2,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2007
U.S. locations
1
States / cities
Norman, Oklahoma
Source: ClinicalTrials.gov public record
Updated Oct 11, 2006 · Synced Jul 22, 2026, 11:16 PM EDT
Withdrawn Phase 2 Interventional

Coronary Vasomotor Response After Riociguat Exposure

NCT01165931
View directory record Official record
Conditions
Coronary Artery Disease
Interventions
Riociguat (BAY63-2521)
Drug
Lead sponsor
Bayer
Industry
Eligibility
18 Years to 90 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 22, 2013 · Synced Jul 22, 2026, 11:16 PM EDT
Withdrawn Phase 2 Interventional

Effects of Prolonged Delivery of Nitric Oxide Gas on Plasma Reduction-Oxidation Reactions in Cardiac Surgical Patients

NCT04022161
View directory record Official record
Conditions
Cardiovascular Diseases, Oxidative Stress, Endothelial Dysfunction
Interventions
Nitrogen Gas for Inhalation, Blood withdrawal, Nitric Oxide
Drug · Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 1, 2025 · Synced Jul 22, 2026, 11:16 PM EDT
Completed Phase 2 Interventional

Arginine Treatment of Acute Chest Syndrome (Pneumonia) in Sickle Cell Disease Patients

NCT00029731
View directory record Official record
Conditions
Anemia, Sickle Cell, Pneumonia
Interventions
Arginine hydrochloride
Drug
Lead sponsor
UCSF Benioff Children's Hospital Oakland
Other
Eligibility
5 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2005
U.S. locations
1
States / cities
Oakland, California
Source: ClinicalTrials.gov public record
Updated Mar 24, 2015 · Synced Jul 22, 2026, 11:16 PM EDT
Completed Phase 2 Interventional Results available

Arginine and Buphenyl in Patients With Argininosuccinic Aciduria (ASA), a Urea Cycle Disorder

NCT00345605
View directory record Official record
Conditions
Argininosuccinic Aciduria, Amino Acid Metabolism, Inborn Errors, Urea Cycle Disorders
Interventions
Sodium Phenylbutyrate, Arginine
Drug
Lead sponsor
Brendan Lee
Other
Eligibility
5 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 30, 2018 · Synced Jul 22, 2026, 11:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Influence of Beetroot Juice on Racial Disparities in Vascular Health

NCT05132556
View directory record Official record
Conditions
Blood Pressure, Racial Disparities, Cardiovascular Risk Factor
Interventions
Acute Beetroot Juice
Other
Lead sponsor
Georgia Southern University
Other
Eligibility
18 Years to 39 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Savannah, Georgia
Source: ClinicalTrials.gov public record
Updated Oct 4, 2023 · Synced Jul 22, 2026, 11:16 PM 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 22, 2026, 11:16 PM EDT
Recruiting Phase 4 Interventional

De-implementing Inhaled Nitric Oxide for Congenital Diaphragmatic Hernia

NCT05213676
View directory record Official record
Conditions
Congenital Diaphragmatic Hernia
Interventions
Inhaled Nitric Oxide (iNO) use, De-implementation of Inhaled Nitric Oxide (iNO) use
Drug · Other
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
0 Months to 1 Month
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2031
U.S. locations
19
States / cities
Birmingham, Alabama • Little Rock, Arkansas • Irvine, California + 16 more
Source: ClinicalTrials.gov public record
Updated Feb 8, 2026 · Synced Jul 22, 2026, 11:16 PM EDT
Not yet recruiting Not applicable Interventional

Inhaled Nitric Oxide in Severe Obesity

NCT06675435
View directory record Official record
Conditions
Obesity, Respiratory Insufficiency, Hypoxemic Respiratory Failure, Nitric Oxide
Interventions
Nitric oxide
Device
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 19, 2026 · Synced Jul 22, 2026, 11:16 PM EDT
Recruiting No phase listed Observational

Utility of PCD Diagnostics to Improve Clinical Care

NCT05889013
View directory record Official record
Conditions
Primary Ciliary Dyskinesia
Interventions
Nasal Nitric Oxide testing
Device
Lead sponsor
Connecticut Children's Medical Center
Other
Eligibility
2 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 21, 2025 · Synced Jul 22, 2026, 11:16 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

PET Imaging of Endotoxin-induced iNOS Activation

NCT01407796
View directory record Official record
Conditions
Pneumonia
Interventions
Endotoxin (E. coli O:113, Reference Endotoxin), [18F](+/-)NOS
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
19 Years to 44 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 20, 2014 · Synced Jul 22, 2026, 11:16 PM EDT
Completed Phase 4 Interventional Results available

Effects of Sitagliptin on Endothelial Function in Type 2 Diabetes on Background Metformin Therapy

NCT01859793
View directory record Official record
Conditions
Diabetes, Atherosclerosis
Interventions
sitagliptin, Placebo
Drug
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
21 Years to 70 Years
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 20, 2016 · Synced Jul 22, 2026, 11:16 PM EDT
Terminated Phase 2 Interventional Results available

Safety and Efficacy of Gaseous Nitric Oxide on Venous Stasis Leg Ulcers

NCT00545298
View directory record Official record
Conditions
Venous Ulcers
Interventions
Nitric Oxide - same dose 6 wks, Nitric Oxide modified treatment
Drug
Lead sponsor
Nitric BioTherapeutics, Inc
Industry
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Nov 18, 2012 · Synced Jul 22, 2026, 11:16 PM EDT
Terminated Phase 4 Interventional

Management of Asthma Patients Guided by Exhaled Nitric Oxide (eNO)

NCT00739219
View directory record Official record
Conditions
Asthma
Interventions
Apieron Insight eNO monitor
Device
Lead sponsor
Apieron
Industry
Eligibility
12 Years and older
Enrollment
260 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
12
States / cities
Mission Viejo, California • San Jose, California • Glastonbury, Connecticut + 9 more
Source: ClinicalTrials.gov public record
Updated Jan 20, 2009 · Synced Jul 22, 2026, 11:16 PM EDT
Terminated Phase 4 Interventional Results available

Outpatient Vasodilator Assessment Using Iloprost in Pulmonary Hypertension

NCT03044314
View directory record Official record
Conditions
Pulmonary Hypertension
Interventions
Iloprost and nitric oxide administration
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 1, 2024 · Synced Jul 22, 2026, 11:16 PM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Comparing Approaches to Assess Nitric Oxide-dependent Cutaneous Vasodilation

NCT06499844
View directory record Official record
Conditions
Endothelial Function
Interventions
Acetylcholine
Drug
Lead sponsor
University of Iowa
Other
Eligibility
18 Years to 30 Years
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Aug 23, 2025 · Synced Jul 22, 2026, 11:16 PM EDT
Completed Not applicable Interventional Results available

Glutamine and Insulin Sensitivity in Type I Diabetes

NCT01467063
View directory record Official record
Conditions
Type I Diabetes Mellitus
Interventions
Glutamine, Placebo
Dietary Supplement
Lead sponsor
Nemours Children's Clinic
Other
Eligibility
13 Years to 19 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Jul 13, 2021 · Synced Jul 22, 2026, 11:16 PM EDT
Completed Phase 4 Interventional

Natrecor for Pulmonary Hypertension in Lung Transplants

NCT00205426
View directory record Official record
Conditions
Pulmonary Hypertension
Interventions
Natrecor
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 13, 2015 · Synced Jul 22, 2026, 11:16 PM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers

Aqueous Humor Dynamics of NCX 470 Ophthalmic Solution

NCT05938699
View directory record Official record
Conditions
Open Angle Glaucoma
Interventions
NCX 470, Placebo
Drug
Lead sponsor
Nicox Ophthalmics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 7, 2025 · Synced Jul 22, 2026, 11:16 PM EDT
Completed Phase 4 Interventional Results available

Use of Nitrous Oxide Donor for Labor Induction in Women With PreEclampsia

NCT03171480
View directory record Official record
Conditions
Preeclampsia, Labor, Premature
Interventions
Monoket Pill, Placebo
Drug
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 42 Years · Female only
Enrollment
176 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 3, 2022 · Synced Jul 22, 2026, 11:16 PM EDT