Pulmonary hypertension associated with heart failure with preserved ejection fraction: acute hemodynamic effects of inhaled iloprost.

Iloprost, an inhaled synthetic prostacyclin analogue, improves hemodynamic and clinical status with minimal systemic adversity in patients with pulmonary arterial hypertension. Our single-site, prospective case series aimed to determine the effects of iloprost in subjects with group 2 pulmonary hypertension and heart failure with preserved ejection fraction. Patients referred to Boston Medical Center for initial evaluation of suspected pulmonary hypertension received a test dose of 2.

Adiponectin deficiency: a model of pulmonary hypertension associated with pulmonary vascular disease.

Adiponectin (APN) is an adipocyte-derived factor that exists at high concentrations in serum and has anti-inflammatory and systemic vascular-protective properties. In this study, we investigated the role of APN in pulmonary vascular homeostasis. We found that APN localizes to the luminal side of blood vessels in lung and acts in vitro to block TNF-alpha-induced E-selectin upregulation in pulmonary artery endothelial cells.

Etiology of decreased gastric nitric oxide in the critically ill.

Background: Nitric oxide (NO) is present in the gas phase of the normal human stomach at a high concentration (1-10 ppm). The majority of this NO is produced from the reduction of dietary nitrate to nitrite and finally NO. Generation of this nonenzymatically produced gastric NO occurs only in an acidic environment.