ENDOTHELIAL DYSFUNCTION

This study tests whether a daily supplement made from ginger, L-citrulline, and two herbs can improve blood vessel function and reduce markers of aging in healthy adults. Over six weeks, 35 participants will take the supplement and have blood drawn to measure changes in PAI-1, a …

This phase 2 trial tests whether dulaglutide, a drug used for type 2 diabetes, can improve small blood vessel function in adults with type 1 diabetes. The study involves 47 participants aged 18-40 with long-standing type 1 diabetes. Researchers measure blood flow and insulin sens…

This study tests whether eating wild blueberry powder every day can lower blood pressure and improve blood vessel health in middle-aged and older men and postmenopausal women with slightly high blood pressure. Researchers will measure artery function and stiffness over time. The …

This study tests whether intermittent doses of fisetin, a compound found in fruits and vegetables, can improve blood vessel function and reduce stiffness in arteries of adults aged 65 and older. Researchers will measure changes in blood flow and artery stiffness after one month, …

This study investigates whether patients with pre-existing endothelial dysfunction (damage to the inner lining of blood vessels) are more likely to develop vasoplegia (a dangerous drop in blood pressure) after cardiac surgery using a heart-lung machine. Researchers will measure v…

This study looks at how newer diabetes medications (SGLT2 inhibitors and GLP-1 receptor agonists) affect the eyes of people with type 2 diabetes. Researchers will monitor 40 adults who take metformin and are starting these newer drugs. The goal is to see if these drugs cause any …

This study explores how problems with blood vessel function and genetics may contribute to early-stage COPD and emphysema. Researchers followed over 4,300 adults from a larger heart study, measuring lung function and CT scans. The goal is to understand risk factors, not to test a…

This study involves 500 people who have chest pain or other signs of heart trouble, but whose main heart arteries are not blocked. Researchers use special tools during a heart catheterization to measure tiny blood vessel function and look for hidden causes like microvascular dise…

This study was designed to test whether giving nitric oxide gas during heart surgery could help protect blood vessels in patients with pre-existing vessel problems. It was an add-on to a larger trial and planned to enroll adults having elective heart surgery with prolonged bypass…

This study was designed to measure how breathing nitric oxide gas affects oxidation levels in the blood of heart surgery patients. It was an add-on to a larger trial and planned to enroll adults having elective heart surgery with a bypass machine. However, the study was withdrawn…

This study aimed to see if a simple blood test could find blockages in the small blood vessels of the heart in people who have had a heart transplant. Participants would have had blood draws every three months for a year, and their medical records would have been reviewed for thr…