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Aldosterone, like ADH also acts on the distant tubules, but also at the kidneyâs collecting ducts. Water retention with the aid of aldosterone is more complex because it has to undergo the Sodium-Potassium exchange channels. In this set-up, potassium is excreted while sodium is retained.
Action of aldosterone on renal collecting tubule cells. Muto S(1). Author information: (1)Department of Nephrology, Jichi Medical School, Tochigi, Japan. Aldosterone is a type of steroid hormone that acts primarily in renal collecting ducts to stimulate reabsorption of Na+ as well as secretion of K+ and H+.It binds with intracellular receptors in the nucleus that stimulate the expression of several genes.ction of aldosterone on renal collecting tubule cells. Muto S(1). Author information: (1)Department of Nephrology, Jichi Medical School, Tochigi, Japan. Aldosterone is a type of steroid hormone that acts primarily in renal collecting ducts to stimulate reabsorption of Na+ as well as secretion of K+ and H+.