Abstract
A 23 amino acid synthetic peptide fragment of atrial natriuretic factor (ANF) stimulated guanylate cyclase activity in isolated human glomeruli in a concentration- and time-dependent manner. ANF activated particulate guanylate cyclase whereas it had no effect on soluble guanylate cyclase. These results demonstrate that the glomerulus is a target structure for ANF in humans. They also suggest that ANF-induced increase in glomerular filtration rate is due to a direct effect of this peptide on the glomerular cells mediated by activation of glomerular guanylate cyclase. Atrial natriuretic factor Isolated glomerulus Guanylate cyclase Cyclic GMP
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