Natriuretic peptide receptors

Vasonatrin peptide binds with both natriuretic peptide receptor A and B, but with a preference for B. VNP-stimulated cGMP is 11-fold greater in NPRB than NPRA.

The high-fat diet-fed streptozotocin-induced diabetic Sprague-Dawley rats are subjected to ischemia-reperfusion operation. VNP treatment (100 g/kg iv, 10 min before reperfusion) significantly improved the instantaneous first derivation of left ventricle pressure (LV dP/dtmax) and LV systolic pressure and reduced LV end-diastolic pressure, apoptosis index, caspase-3 activity, plasma creatine kinase (CK), and lactate dehydrogenase (LDH) activities. Treatment hypoxia-induced pulmonary hypertension (HPH) with Vasonatrin peptide for 1 week significantly reduceS mean pulmonary arterial pressure, pulmonary vascular resistance, RVH and muscularization of the pulmonary arteries. Acute intravenous administration of 50 microg/kg Vasonatrin peptide significantly ameliorates pulmonary haemodynamics in HPH rats.