Related Experiment Video
Updated: Aug 13, 2026

5/6th Nephrectomy in Combination with High Salt Diet and Nitric Oxide Synthase Inhibition to Induce Chronic Kidney Disease in the Lewis Rat
Published on: July 3, 2013
Leptin blockade attenuates sodium excretion in saline-loaded normotensive rats
Daniel Villarreal1, Garry Reams, Ronald Freeman
1Department of Internal Medicine, SUNY Upstate Medical University, Syracuse, NY 13210, USA. Villarrd@upstate.edu
Abstract:
Previous investigations in normotensive animals have demonstrated a marked natriuretic and diuretic response following the acute administration of supraphysiologic doses of synthetic leptin. However, the importance of endogenous leptin in the regulation of renal sodium and water balance is not yet defined. This study examined the hemodynamic and renal excretory effects of circulating leptin blockade with a specific polyclonal antibody in groups of normotensive, chronically saline-loaded Sprague-Dawley rats. In the experimental group (n = 10), leptin antibody significantly decreased urinary sodium excretion and urinary flow by approximately 30% compared to the control rats (n = 10). Mean arterial pressure remained unchanged. Collectively, these results are interpreted to suggest that leptin is an important renal sodium-regulating factor under conditions of mild sodium and volume expansion.
More Related Videos
Related Concept Videos
Antihypertensive Drugs: Potassium-Sparing Diuretics
Antihypertensive Drugs: Action of Diuretics
Antihypertensive Drugs: Angiotensin II Receptor Blockers
Reabsorption and Secretion in the Loop of Henle
Physiology of the Genitourinary System II: Tubular Reabsorption and Secretion
Nephrotic Syndrome II : Assessment and Medical Management

