We are conducting a research study on how insulin controls blood sugar in both healthy people and those at risk of type 2 diabetes. We are seeking adult volunteers, aged 18-65, who have body mass indices either in the lean range (18-25 kg/m2) or in the obesity range (30-45 kg/m2) but who do not have prediabetes or diabetes. Participants will undergo a…
We're conducting a research study on how much insulin is needed to control blood sugar in people who are made temporarily resistant to insulin's effects. Insulin is the main hormone (chemical signal) that the body uses to lower the levels of sugar in the blood. We are interested in looking at insulin levels because we think that lowering insulin…
The purpose of this study is to study the effects of a new study drug known as Riociguat in people diagnosed with pulmonary hypertension (PH) associated with idiopathic interstitial pneumonia (IIP). Patients will be in the study for approximately 26 weeks in which they will take the pill Riogciguat three times a day.
This is a clinical research study designed to determine the safety and effectiveness of the TIVUS system, an investigational device used in the treatment of PAH. The TIVUS System is intended to treat patients with pulmonary artery hypertension by injuring the sympathetic nerves surrounding the pulmonary vasculature (denervation) using ultrasonic energy. The…
This study involves two infusions of either rituximab or placebo, two right heart catheterizations (6 months apart), and a variety of other clinical study procedures and exams.