Atrial natriuretic peptide (ANP) acutely promotes water and sodium excretion, whereas subchronic effects involve water retention. Renal hemodynamics, water and sodium excretion, and aquaporin-2 (AQP2) and epithelial Na channel (ENaC) subcellular trafficking were determined in response to continuous ANP infusion in conscious rats, where body sodium and fluid balance was constantly maintained. AN...

Our previous studies have shown that stimulation of the anteroventral third ventricle (AV3V) region of the brain increases atrial natriuretic peptide (ANP) release, whereas lesions of the AV3V region or median eminence of the tuber cinereum block the release of ANP caused by blood volume expansion. These results suggest that participation of the central nervous system is critical to this respon...

UNLABELLED Animal studies have reported a cardioprotective effect for atrial natriuretic peptide (ANP) or brain natriuretic peptide (BNP) administration in the setting of acute myocardial infarction (AMI). However, previous trials performed on AMI patients have reported differences in the cardiac function protection for ANP/BNP infusion, making it diffi cult to confirm the beneficial effect of ...

OBJECTIVES The exact role of atrial natriutetic peptide (ANP) in the pathogenesis of edema in nephrotic syndrome (NS) has not been fully elucidated. We aimed to investigate the possible contribution of ANP to edema formation in NS. METHODS We subjected 18 nephrotic subjects and 20 healthy volunteers to supine bicycle exercise (SBE), a maneuver that seemed to increase venous return and to enha...

BACKGROUND The atrial natriuretic peptide (ANP) family is a complex system consisting of at least three polypeptides and at least three types of receptor. Each peptide interacts with different types of receptor at varying degrees of affinity. To determine if natriuretic peptide levels influence natriuretic peptide receptor expression and regulation, we examined the expression of guanylyl cyclas...

At least two types of receptors for natriuretic peptides have been reported: biologically active receptors coupled with guanylate cyclase (atrial natriuretic peptide [ANP]-B receptors) and clearance receptors (ANP-C receptors). To elucidate the role of protein kinase C (PKC) in the regulation of ANP-B receptors, vascular smooth muscle cells in culture were treated with phorbol ester. Incubation...

The proliferation of cultured astrocytes is positively and negatively regulated, respectively, by the endogenous neuropeptides, endothelin-3 (ET-3) and atrial natriuretic peptide (ANP). Here, we determined the important steps for the modulation by ET and ANP of G1 to S phase cell cycle progression. ET-3 stimulated an increased number of fetal rat diencephalic astrocytes to progress through G1/S...

This review focuses on the relation between atrial fibrillation (AF) and atrial natriuretic peptide (ANP). ANP is produced by the atria secondary to atrial stretch. By causing atrial stretch, acute AF leads to an increase in plasma ANP concentration, which serves to normalize haemodynamics through natriuresis and vasodilation. However, data have been reported suggesting that prolonged AF, by in...

Cardiac gene expression of atrial natriuretic peptide (ANP) and that of brain natriuretic peptide (BNP) are markedly elevated after myocardial infarction. The cellular distribution and temporal responses of ANP and BNP messenger RNA (mRNA) expression were compared by in situ hybridization for 5 weeks after left coronary artery ligation in sheep. Ligation resulted in highly reproducible, transmu...

Plasma atrial natriuretic peptide (ANP) is an endogenous vasodilator, which might counteract pulmonary hypertension due to hypoxaemia. The aim of this study was to investigate the influence of acute and chronic hypoxia on plasma (ANP) concentrations in humans. Venous plasma ANP concentrations in six healthy subjects were measured before and after inhalation of hypoxic air (11% O2) at rest for 3...