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  • Title: Atrial natriuretic peptide inhibits water and sodium intake in rabbits.
    Author: Tarjan E, Denton DA, Weisinger RS.
    Journal: Regul Pept; 1988 Oct; 23(1):63-75. PubMed ID: 2976957.
    Abstract:
    The effect of atrial natriuretic peptide (ANP) on water and sodium intake was investigated in wild rabbits, a species which does not drink water following i.c.v. or i.v. administration of angiotensin II but develops sodium appetite following i.c.v. infusion of angiotensin II. ANP was given during or after depletion of extracellular fluid volume: hemorrhage, fluid deprivation and administration of furosemide. Systemically administered ANP reduced the water, but not the sodium intake of wild rabbits. I.c.v. administration of ANP inhibited both water and sodium intake. The suppression of thirst following both i.v. and i.c.v. administration of ANP indicates that inhibition of the effect of angiotensin II is not the exclusive mechanism and the circumventricular organs are probably not the exclusive sites of action for ANP. The inhibition of sodium appetite in wild rabbits was consistent with earlier proposals that ANP acts through the inhibition of the effects of angiotensin II. Reduction of food intake coincident with administration of ANP was also noted, but dose-dependent decrease was not observed.
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