The natriuretic peptides: universal volume controllers

Medical Hypotheses
H M Abdulla

Abstract

Since the discovery of the natriuretic effect of atrial natriuretic peptide (ANP), a family of other natriuretic peptides similar to ANP were isolated, including atriopeptin, vessel dilator, long-acting natriuretic peptide, urodilatin, and brain natriuretic peptide (BNP) to name a few. ANP was noted to possess natriuretic and diuretic properties that controlled increases in intravascular volume. ANP was also found to be elevated in conditions of increased intraocular pressure and biliary obstruction. BNP was found to be elevated in conditions of increased intracranial pressure, pointing towards its role in controlling cerebrospinal fluid volume. While at the cellular level, ANP controlled individual cell size. This makes the natriuretic peptides not only controllers of intravascular volume, but also modulators of a myriad of cavity volumes down to the control of individual cell volume.

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Citations

Oct 9, 2004·Clinical Cardiology·Daniel M Spevack, Arthur Schwartzbard
Aug 26, 2009·Geriatrics & Gerontology International·Johji NaitoHirotoshi Watanabe
Apr 24, 2003·American Journal of Physiology. Renal Physiology·Jochen R HirschEberhard Schlatter

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