6Hecker M, Cattaruzza M, Wagner H ,et al. Regulation of inducible nitric oxide synthase gene expression in vascular smooth muscle cells[J]. Gen Pharmacol, 1999,32 : 9-15.
7Feger GI,Schillingl L,Ehrenreich H, et al. Endothelium-dependent relaxation counteracting the contractile action of endothelin partly due to ETB receptor activation [J]. Res Exp Med, 1997, 196:327-337.
8Doherty AM, Vprichard AC. Discovery and development of an endothelin. A receptor-selective antagonist PD156701[J] .Pharm Biotech, 1998, 11:81-112.
9Nagamine J, Hill LL. Pea HRG. Combined therapy with zaprinast and inhaled nitric oxide abolishes hypoxic pulmonaryhy pertension[J]. Crit care Med, 2000, 28: 2420-2424.
10Rosenzweig EB, Kerstein D, Barst R J . Long-term prostacyclin for pulmonary hypertension with associated congenital heart defects[J]. Circulation , 1999, 99 : 1858-1865.