Clinical trials: Vasodilation
Blood Biomarkers, Vasodilation
The Role of Eicosanoids in the Cardiovascular Actions of Inhaled Nanoparticles
Nanoparticles (NPs) are minute pieces of material to which we are exposed every day in the air we breathe. Some are naturally occurring and have no impact on health, whereas others are produced from urban air pollution and can…
- Conditions
- Blood Biomarkers, Vasodilation, Blood Clotting, Lung Function
- Trial name
- ECOARM (NCT03659864)
- Testing
- diesel exhaust particulate, carbon nanoparticles, small graphene oxide
- Where
- United Kingdom
- Volunteers
- 26 people, healthy volunteers welcome
- Sponsor
- University of Edinburgh
Hypercholesterolemia, Hypertension
Effects of Rosiglitazone on Blood Vessels in Patients With High Blood Pressure and High Cholesterol
Cells in the lining of blood vessels produce various substances that cause the vessels to dilate (relax) and constrict (tighten), thereby regulating blood flow.
- Trial name
- NCT00006071
- Where
- United States
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- National Heart, Lung, and Blood Institute (NHLBI)
Healthy
Effect of Simvastatin Withdrawal on Ocular Endothelial Function
Statins are drugs representing the most commonly prescribed medication for the treatment of hypercholesterolemia. In a recently published study, discontinuation of statin therapy in patients after acute myocardial infarction was…
- Trial name
- NCT02533141
- Testing
- Dynamic Vessel Analyzer (DVA), Laser Doppler Velocimetry (LDV), Simvastatin
- Where
- Austria
- Volunteers
- healthy volunteers welcome
- Sponsor
- Medical University of Vienna
Diabetes Mellitus, Type 1, Hypertension
Correlation of Flicker Induced and Flow Mediated Vasodilatation in Patients With Endothelial Dysfunction and Healthy Volunteers.
A couple of studies have shown that illuminating the eye with diffuse flickering light is accompanied by an increase of retinal vessel diameters, optic nerve head blood flow and retinal blood flow.
- Conditions
- Diabetes Mellitus, Type 1, Hypertension, Hypercholesterolemia, Regional Blood Flow
- Trial name
- NCT00432029
- Testing
- Forearm blood flow measurement, Flow mediated dilation (FMD), Zeiss Retinal Vessel Analyzer (RVA), Stimulation with Flicker-light
- Where
- Austria
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Medical University of Vienna
Diabetes Mellitus
Microvascular Response in Diabetes Mellitus
Vascular and neurological mechanisms are both likely to be involved in foot ulcer. We recently reported on the hand an original transient pressure-induced vasodilation (PIV) during a 5 mmHg/min increase of pressure strain using…
- Trial name
- NCT00160927
- Testing
- local heating, iontophoresis, actylcholine
- Where
- France
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- University Hospital, Angers
Sleep
Stable Sleep Pattern Before Sleep Loss
Sleep is now recognized as important for disease prevention. Too little or too much sleep contributes to cardiovascular disease. Leading health organizations recommend adults sleep 7-9 hours per night for optimal health.
- Trial name
- NCT06201390
- Testing
- Sleep consistency
- Where
- United States
- Volunteers
- 16 people, healthy volunteers welcome
- Sponsor
- Texas Tech University
Ocular Physiology, Retina
Is There a Difference in Flicker Induced Vasodilatation Between Smokers and Non-Smokers?
Habitual smoking is associated with an increased risk of coronary artery disease, cerebral and peripheral vascular disease, including ocular diseases like age-related macular degeneration or diabetic retinopathy.
- Conditions
- Ocular Physiology, Retina, Blood Flow Velocity
- Trial name
- NCT00431730
- Testing
- flicker light stimulation
- Where
- Austria
- Volunteers
- healthy volunteers welcome
- Sponsor
- Medical University of Vienna
Healthy
Effects of Miconazole on Blood Flow
This study will investigate the effect of the drug miconazole on blood vessel dilation. Miconazole stops production of EDHF, a substance that causes arteries to dilate. EDHF is produced by the cells that line blood vessels.
- Trial name
- NCT00004575
- Testing
- Miconazole, L-NMMA, Bradykinin
- Where
- United States
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- National Heart, Lung, and Blood Institute (NHLBI)
Radial Artery
Radial Artery Vasodilation Heat Study
The purpose of this study is to collect data about the efficacy of utilizing distal topical heat application for dilatation of the radial artery.
- Trial name
- NCT03620383
- Testing
- Topical Heat
- Where
- United States
- Volunteers
- 45 people, healthy volunteers welcome
- Sponsor
- Oregon Health and Science University
Determine the Effects of Nitrosigine and Citrulline-malate on Flow-mediated Dilation Among Young Adults
Evaluation of Sports Supplements on Blood Flow
Many athletes seek to increase their plasma (blood) nitric oxide content prior to exercise in order to augment vasodilation. Increased vasodilation during exercise, especially high intensity resistance training, allows for more…
- Trial name
- NCT04278053
- Testing
- inositol-stabilized arginine silicate
- Where
- United States
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- University of Arkansas, Fayetteville
Type 2 Diabetes Mellitus
Free Fatty Acids and Vascular Function in Subjects With Diabetes
This study will test the hypothesis that reduction in release of free fatty acids from adipocytes will restore insulin-mediated endothelium-dependent vasodilation and skeletal muscle glucose metabolism in subject with type 2…
- Trial name
- NCT00153179
- Testing
- acipimox
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Brigham and Women's Hospital
Cardiovascular Disease
The Role of Nitric Oxide Synthase in Circulating Progenitor Cell Function
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.
- Trial name
- NCT00627068
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- University of California, San Francisco
Vasodilatation, Oral Soft Tissue Conditions
Endothelium Dependent and Non-dependent Vasodilatation in Human Gingiva
The aim of this study is to compare the endothelim-dependent and non-dependent vasodilatation between genders in the human gingiva.
- Trial name
- NCT04918563
- Testing
- Nitroglycerin, Acetylcholine
- Where
- Hungary
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Semmelweis University
Atherosclerotic Cardiovascular Disease
Heme Oxygenase (HO) Activity and Adenosine Induced Vasodilation
The purpose of this study is to determine whether heme oxygenase 1 induction by heme arginate treatment is of influence on adenosine induced vasodilation in healthy individuals.
- Trial name
- NCT00856817
- Testing
- L-arginine + heme arginate, Heme arginate + L-arginine
- Where
- Netherlands
- Volunteers
- 6 people, healthy volunteers welcome
- Sponsor
- Radboud University Medical Center
Microvascular Dysfunction
Cheese Consumption and Human Microvascular Function
Increased dairy intake is associated with improved measures of blood vessel health. Dairy cheese, however, is often high in sodium. Dietary sodium can impair blood vessel function.
- Trial name
- NCT03376555
- Testing
- Low sodium no cheese, Low sodium cheese, High sodium no cheese
- Where
- United States
- Volunteers
- 13 people, healthy volunteers welcome
- Sponsor
- Lacy Alexander
Blood Flow in Healthy Volunteers
Effect of Polymorphisms in the Adenosine a2a Receptor Gene and AMPD2 Gene on Adenosine-Induced Vasodilation and Reactive Hyperemia
The endogenous nucleoside adenosine can induce various cardiovascular and neurohumoral effects by stimulation of specific adenosine receptors.
- Trial name
- NCT00253929
- Testing
- Intra-arterial infusion of adenosine, intra-arterial infusion of caffeine, intra-arterial infusion of acetylcholine
- Where
- Netherlands
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Radboud University Medical Center
Obesity
Effect of DPP4 Inhibition on Growth Hormone Secretion
This study tests the following hypotheses: Aim 1: Test the hypothesis that acute dipeptidyl peptidase 4 (DPP4) inhibition with the currently available anti-diabetic drug, sitagliptin, will increase stimulated growth hormone (GH)…
- Trial name
- NCT01701973
- Testing
- Sitagliptin, Pegvisomant, L-NMMA
- Where
- United States
- Volunteers
- 44 people, healthy volunteers welcome
- Sponsor
- Vanderbilt University
Type2 Diabetes
Insulin Stimulated Vasodilation in Patients With Type 2 Diabetes
This study evaluates the role of endothelin in insulin stimulated vasodilation and glucose uptake. The subjects will complete an hyperinsulinemic euglycemic clamp with and without blockade of the endothelin receptors.
- Trial name
- NCT04907838
- Testing
- Insulin clamp, BQ123, BQ123 + BQ788
- Where
- Denmark
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- University of Southern Denmark
Endothelial Dysfunction
Effects of Tomato Sauce on Endothelial Dysfunction Induced by a High Fat Meal in Healthy Subjects
Several epidemiological and intervention studies suggest that a high dietary intake of tomatoes is associated with lower risk of cardiovascular disease (CVD), while, low intake is associated with an increased incidence of CVD.
- Trial name
- VRPM (NCT01968369)
- Testing
- tomato sauce
- Where
- Italy
- Volunteers
- 19 people, healthy volunteers welcome
- Sponsor
- Universita di Verona
Cardiovascular Diseases, Vasodilation
The Nitrite and Coronary Flow Study
This study is a pharmacodynamic proof of concept study investigating the physiological effects of systemic infusion of nitrite on coronary blood flow using MRI.
- Conditions
- Cardiovascular Diseases, Vasodilation, Hypoxia
- Trial name
- NCT04354051
- Testing
- Sodium Nitrite
- Where
- United Kingdom
- Volunteers
- 14 people, healthy volunteers welcome
- Sponsor
- University of East Anglia