Clinical trials: Endothelial Function
Type 2 Diabetes
Influence of Endothelial Function on Central and Peripheral Causes Of Exercise Impairment in Type 2 Diabetes
This study will evaluate the effects of impaired blood flow regulation on exercise. It will also determine whether the effects are more important in the heart or in the skeletal muscle tissue during exercise.
- Trial name
- InsITE (NCT00786019)
- Testing
- Exercise program, Ascorbic Acid (Vitamin C)
- Where
- United States
- Volunteers
- 47 people, healthy volunteers welcome
- Sponsor
- University of Colorado, Denver
Cognitive Impairment, Executive Dysfunction
Vascular Mechanisms for the Effects of Loss of Ovarian Hormone Function on Cognition in Women
Complaints about memory and thinking are common in women as they go through menopause and estrogen levels fall. The ovarian hormone estrogen is important for supporting normal cognitive function, and changes in brain activity and…
- Conditions
- Cognitive Impairment, Executive Dysfunction, Endothelial Dysfunction, Cardiovascular Disease
- Trial name
- NCT02122198
- Testing
- Leuprolide acetate, Estradiol, Medroxyprogesterone
- Where
- 2 sites in United States
- Volunteers
- 17 people, healthy volunteers welcome
- Sponsor
- University of Colorado, Denver
Smoking
Airway and Pulmonary Vascular Endothelial Function in Healthy Smokers: Effect of Inhaled Glucocorticosteroid Treatment
The purposes of the present proposal are to 1) compare inhaled albuterol-induced changes in airway blood flow (Qaw), and in CO and Ppas in healthy current smokers and lifetime non-smokers as an index of endothelial function in…
- Trial name
- smoker3 (NCT02141633)
- Testing
- echocardiogram plus albuterol, airway blood flow plus albuterol, Fluticasone propionate
- Where
- United States
- Volunteers
- 31 people, healthy volunteers welcome
- Sponsor
- University of Miami
Aging, Inflammation
Effect of Age and Fitness on Vascular Function and Oxidative Stress During Acute Inflammation
This study focuses on whether high cardiorespiratory fitness in older adults has a protective effect on the vascular response to acute inflammation in comparison to low-fit older and young adults.
- Trial name
- NCT03889158
- Testing
- Typhoid Vaccine, Ascorbic Acid
- Where
- United States
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- University of Illinois Chicago
Obesity
Characterization of Brachial Arterial t-PA Release, Endothelial Function, Obesity and Inflammation
T-PA release is impaired in obese subjects. In order to have a better mechanistic understanding of t-PA release, we will compare t-PA release to Flow Mediated Vasodilation, Radial Artery Tonometry, and other markers of…
- Trial name
- P1A3B (NCT00780481)
- Testing
- Bradykinin
- Where
- United States
- Volunteers
- 13 people, healthy volunteers welcome
- Sponsor
- Vanderbilt University
Endothelial Dysfunction
The Effects of Watermelon Juice Supplementation on Postprandial Vascular Endothelial Function
The purpose of this study is to test if watermelon juice supplementation improves vascular dysfunction experience during hyperglycemia.
- Trial name
- WMJ (NCT04092439)
- Testing
- Watermelon Juice
- Where
- United States
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- Pennington Biomedical Research Center
Cardiovascular Diseases, Aging
Cardio-vascular Protective Effects of Wolfberry in Middle-aged and Older Adults
This purpose of this study is to assess the impact of consuming wolfberry on cardiovascular risk in Singapore's middle-aged and older adults.
- Trial name
- NCT03535844
- Testing
- Wolfberry, Healthy diet
- Where
- 2 sites in Singapore
- Volunteers
- 41 people, healthy volunteers welcome
- Sponsor
- National University of Singapore
Atherosclerosis
Arterial Function and Atherosclerosis in Essential Thrombocythemia
The aim of the study is to examine (a) whether patients with JAK2 V617F positive ET in comparison to age-and sex-matched, apparently healthy control subjects show more advanced progression of arterial stiffness, pulse-wave…
- Trial name
- NCT03828422
- Testing
- imaging
- Volunteers
- 82 people, healthy volunteers welcome
- Sponsor
- University Medical Centre Ljubljana
Type 2 Diabetes
Metabolic Causes of Thrombosis in Type 2 Diabetes - Question 4
Hypoglycemia (low blood glucose level) occurs frequently in intensively treated patients with diabetes. Although hypoglycemia was thought to occur almost exclusively in T1DM, with the advent of improved metabolic control in T2DM…
- Trial name
- NCT00574340
- Testing
- Hyperinsulinemic Hypoglycemic Clamp
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of Maryland, Baltimore
Prediabetes, Cardiovascular Disease
Cardioprotective Activities Of Whole Eggs On Vascular Endothelial Function In Prediabetic Adults
Cardiovascular disease (CVD) is largely a lifestyle-related condition that is the #1 killer of adults in the United States. Our work is aimed at understanding how short-term increases in blood sugar, like those that accompany…
- Trial name
- NCT02364570
- Testing
- Glucose (100g), Glucose (75g), Whole Eggs
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Ohio State University
Cardiovascular Diseases
Effect of Estradiol+Drospirenone Versus Estradiol+MPA on Endothelial Function
This study compares the effects of two common hormone medications on the heart and blood vessels of healthy post-menopausal women over the age of 45. The study will take place over the course of about 5 months.
- Trial name
- NCT01109979
- Testing
- Estradiol+MPA, Estradiol+Drospirenone
- Where
- United States
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Brigham and Women's Hospital
Chronic Kidney Disease, Hypertension
Alpha-Adrenoceptor Vascular Function In Chronic Kidney Disease Focus On The Role Of Endothelial Nitric Oxide
The purpose of this study is to learn more about why most patients with early stages of kidney disease have high blood pressure.
- Trial name
- NCT00356265
- Testing
- Procedure: Regional phenylephrine arterial infusion
- Where
- United States
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- University of Michigan
Insulin Resistance
The Effects of Altering Physical Activity on Cardiometabolic Health
The effects of physical inactivity on variations in blood glucose and vascular health are not fully understood. The purpose of this study is to determine if an acute transition from physical activity to inactivity alters vascular…
- Trial name
- PIA (NCT01879059)
- Testing
- Exercise
- Where
- United States
- Volunteers
- 13 people, healthy volunteers welcome
- Sponsor
- University of Kansas Medical Center
Hypertension
Melatonin and Nighttime Blood Pressure in African Americans--24 mg Study
The purpose of this study is to test the effect of oral melatonin supplementation (24 mg per night for 4 weeks) on nighttime blood pressure in African Americans with a history of elevated nighttime blood pressure.
- Trial name
- NCT01114373
- Testing
- Melatonin
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Emory University
Sleep Apnea, Insufficient Sleep Syndrome
Improving Outcomes for Patients With SDB and Insufficient Sleep
The purpose of this study is to look at how sleep disordered breathing (SDB) and not getting enough sleep each night contribute to daytime sleepiness.
- Conditions
- Sleep Apnea, Insufficient Sleep Syndrome, Sleep, Hypertension
- Trial name
- RESTORE (NCT04279834)
- Testing
- PAP Treatment, Sleep Education I
- Where
- United States
- Volunteers
- 561 people, healthy volunteers welcome
- Sponsor
- Wayne State University
Obesity, Endothelial Dysfunction
Effect of Vitamin D Supplementation on Endothelial Function in Obese Adolescents
Vitamin D deficiency has been linked to endothelial dysfunction in adults. Obese adolescents have a high prevalence of Vitamin D deficiency as well as evidence of endothelial dysfunction.
- Conditions
- Obesity, Endothelial Dysfunction, Vitamin D Deficiency
- Trial name
- NCT01746264
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 19 people, healthy volunteers welcome
- Sponsor
- Mayo Clinic
HIV Infection
Comparing Blood Vessel Endothelial Function in HIV-Infected People and Matched HIV-Uninfected People
The blood vessels that carry blood from the heart to the rest of the body are normally capable of relaxing and constricting when needed to provide more or less blood to the body.
- Trial name
- NCT00919724
- Where
- United States
- Volunteers
- 89 people, healthy volunteers welcome
- Sponsor
- Indiana University
Diseases, Metabolic, Insulin Sensitivity
Comparing Soybean Oil-Based (Intralipid) With an Olive Oil-Based (ClinOleic) Lipid Emulsion on Healthy Volunteers
Many patients in the hospital who are malnourished or not eating received intravenous feeding or total parenteral nutrition (TPN). Despite improving nutrition, TPN may increase the risk of infections and hospital complications.
- Trial name
- TPN1 (NCT02185729)
- Testing
- Intralipid, ClinOleic, Dextrose
- Where
- United States
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Emory University
Cardiovascular Disease
Efavirenz Versus Rilpivirine on Vascular Function, Inflammation, and Oxidative Stress
The purpose of this study is to compare the cardiovascular profiles of efavirenz and rilpivirine, which are two drugs used to treat HIV infection.
- Trial name
- NCT01585038
- Testing
- Efavirenz, Rilpivirine
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Indiana University
Elevated Blood Pressure, Endothelial Dysfunction
Effectiveness of Vitamin D Supplementation
This pilot study will examine the effectiveness of vitamin D supplementation on reducing blood pressure and improving endothelial function. Premenopausal African American women will be recruited.
- Trial name
- NCT02513823
- Testing
- 2,000 International Units (IU)of vitamin D3
- Where
- United States
- Volunteers
- 27 people, healthy volunteers welcome
- Sponsor
- Texas Woman's University