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lüll Nitric oxide-independent stimulation of soluble guanylate cyclase with BAY 41-2272 in cardiovascular disease Boerrigter G; Burnett JC JrCardiovasc Drug Rev 2007[Spr]; 25 (1): 30-45The nitric oxide (NO)-soluble guanylate cyclase (sGC)-cyclic 3',5'-guanosine monophosphate (cGMP) pathway plays an important role in cardiovascular regulation by promoting vasodilation and inhibiting vascular smooth muscle cell growth, platelet aggregation, and leukocyte adhesion. In pathophysiological states with endothelial dysfunction this signaling pathway is impaired. Activation of sGC has traditionally been achieved with nitrovasodilators; however, these drugs are associated with the development of tolerance and potentially deleterious cGMP-independent actions. In this review the actions of BAY 41-2272, the prototype of a new class of NO-independent sGC stimulators, in cardiovascular disease models is discussed. BAY 41-2272 binds to a regulatory site on the alpha-subunit of sGC and stimulates the enzyme synergistically with NO. BAY 41-2272 had antihypertensive actions and attenuated remodeling in models of systemic arterial hypertension. It also unloaded the heart in experimental congestive heart failure. BAY 41-2272 reduced pulmonary vascular resistance in acute and chronic experimental pulmonary arterial hypertension. Furthermore, BAY 41-2272 inhibited platelet aggregation in vitro and leukocyte adhesion in vivo. These findings make direct sGC stimulation with BAY 41-2272 a promising new therapeutic strategy for cardiovascular diseases and warrant further studies. Finally, the significance of the novel NO- and heme-independent sGC activator BAY 58-2667, which activates two forms of NO-insensitive sGC, is briefly discussed.|Animals[MESH]|Antihypertensive Agents/*pharmacology/therapeutic use[MESH]|Benzoates/pharmacology[MESH]|Cardiovascular Diseases/*drug therapy/metabolism/physiopathology[MESH]|Cell Adhesion/drug effects[MESH]|Cyclic GMP/metabolism[MESH]|Disease Models, Animal[MESH]|Endothelium, Vascular/*drug effects/metabolism/physiopathology[MESH]|Enzyme Activation/drug effects[MESH]|Enzyme Activators/*pharmacology/therapeutic use[MESH]|Guanylate Cyclase/*metabolism[MESH]|Heart Failure/drug therapy/metabolism[MESH]|Heme/metabolism[MESH]|Humans[MESH]|Hypertension, Pulmonary/drug therapy/metabolism[MESH]|Hypertension/drug therapy/metabolism[MESH]|Inflammation/drug therapy/metabolism[MESH]|Leukocytes/drug effects[MESH]|Nitric Oxide/*metabolism[MESH]|Platelet Aggregation/drug effects[MESH]|Pyrazoles/*pharmacology/therapeutic use[MESH]|Pyridines/*pharmacology/therapeutic use[MESH]|Receptors, Cytoplasmic and Nuclear/*metabolism[MESH]|Soluble Guanylyl Cyclase[MESH]|Vasodilator Agents/*pharmacology/therapeutic use[MESH] |