Reperfusion lung injury is attenuated by natriuretic peptide receptor antagonist in in-vivo mouse model

Materials and methods The NPR-A antagonist anantin was utilized in an in vivo mouse model of unilateral left lung IR (30 min:150 min), and pulmonary vascular permeability was assessed by Evans blue dye (EBD)-labeled albumin escape. The NPRA signalling cascade was assessed by measurements of circulating and lung tissue levels of ANP, cGMP and phosphorylation of lung vasodilator-stimulated phosphoprotein (VASP). Additionally the effect of exogenous ANP administration on capillary filtration coefficient was determined in an in situ isolated perfused mouse model of lung IR.