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+.