Brain Natriuretic Peptide-45, rat (BNP-45, rat; 0.1, 0.2, 0.5, 1.0 and 2.0 nmol/kg, i.v.) shows potent natriuretic and hypotensive activities in anesthetized spontaneously hypertensive rats (SHR) and Wistar-Kyoto rats (WKY). Brain Natriuretic Peptide-45, rat with high concentration decreases blood pressure in SHR. But WKY is more susceptible than SHR to BNP-45 for diuresis, natriuresis and urinary cGMP excretion. In addition, high dose of Brain Natriuretic Peptide-45, rat cuases prolonged lowering of blood pressure and urinary cGMP excretion in WKY[1].
