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  • Title: Enhanced distal absorption of potassium by magnesium-deficient rats.
    Author: Wong NL, Sutton RA, Mavichak V, Quamme GA, Dirks JH.
    Journal: Clin Sci (Lond); 1985 Nov; 69(5):625-30. PubMed ID: 4053516.
    Abstract:
    The effect of acute potassium infusion on renal tubular reabsorption of potassium by magnesium-deficient and pair-fed control rats has been studied by the recollection micropuncture method. During potassium chloride infusion, the amount of potassium remaining in the distal tubule is lower in magnesium-deficient than in pair-fed rats. This could be due to a reduction in potassium secretion or to an enhancement of potassium reabsorption. The present study demonstrates enhanced renal potassium retention in the magnesium-deficient rat, and is in contrast to previous reports of renal potassium wasting in this circumstance.
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