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The Journal of General Physiology, Vol 53, 487-497, Copyright © 1969 by The Rockefeller University Press

ARTICLE

Accumulation of Iron in the Rabbit Erythroid Cell As Affected by Ouabain, Sodium and Potassium Ions, and Temperature

W. C. Wise 1 and J. W. Archdeacon 1

1 From the Department of Physiology and Biophysics, University of Kentucky, Lexington, Kentucky 40506.

Dr. Wise's present address is Department of Physiology, Medical College of South Carolina, Charleston, South Carolina 29401

Reticulocytosis was induced in rabbits with phenylhydrazine. The accumulation of a small part of 59Fe in blood cells of these animals was inhibited by ouabain and related to changes in extracellular sodium and potassium concentrations. Sodium increases movement from the cell surface into the cell, whereas potassium and ouabain decrease this movement. 59Fe movement was found to be temperature-dependent. Thus, the Na-K ATPase system appears to be important in the movement of iron from the cell membrane (stroma) to the cell interior, but influences only a small part of the total iron transport.

Submitted on June 7, 1968


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