natriuretic peptide

A peptide which is involved in the maintenance of electrolyte-fluid balance and vascular tone. It induces natriuresis and diuresis, resulting in excretion of sodium and water by the kidneys, thereby lowering blood volume and blood pressure.

The family comprises three principal members which are released in response to hypervolaemic and hypertensive states.
● Atrial natriuretic peptide (ANP)
● B-type natriuretic peptide (BNP)
● C-type natriuretic peptide (CNP)