Fig. 1From: Hypertrophic pyloric stenosis following persistent pulmonary hypertension of the newborn: a case report and literature reviewDiagram showing the mechanism of nitric oxide production that mediates vasodilation and smooth muscle relaxation. ADMA, asymmetric dimethylarginine; NOS, nitric oxide synthase; NO, nitric oxide; GTP, guanosine triphosphate; cGMP, cyclic guanosine monophosphate. ADMA is an inhibitor of endothelial NOS activityBack to article page