2013 Volume 72 Issue 5 Pages 260-261
The rapid development of pharmacological treatment for pulmonary arterial hypertension is progressing because of the discovery of the mechanism of interaction between pulmonary vascular endothelial cells and smooth muscle cells. Three types of pulmonary specific vasodilators, prostaglandin I2, endothelin receptor antagonist, and phosphodiesterase type-5 inhibitor have been introduced and are markedly effective in the clinical stage.