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  • Title: Effect of glucose intake on human leucocyte 86Rb influx and [3H]-ouabain binding.
    Author: Turaihi K, Baron DN, Dandona P.
    Journal: Metabolism; 1988 Feb; 37(2):171-4. PubMed ID: 2828822.
    Abstract:
    86Rb influx and [3H] ouabain binding by human leucocytes were measured in eight normal nonobese fasting subjects before and after a challenge with 75 g glucose orally. The mean ouabain-sensitive 86Rb influx increased significantly from 194 to 283 mmol/kg protein/h (P less than .01), and [3H]-ouabain binding increased from 236 to 403 fmol/mg protein. The mean plasma potassium concentration fell from 4.2 to 3.9 mmol/L (P less than .05). Following intravenous glucose infusion, the median 86Rb transport increased from 186 to 267 mmol/kg protein/h, while median plasma potassium concentration fell from 4.3 to 3.9 mmol/L. Therefore, glucose intake acutely increases Na-K ATPase units, stimulates potassium (Rb) transport, and causes a concomitant fall in plasma potassium concentrations. Nutritional intake is probably an important determinant of Na-K ATPase units and activity in the human leucocyte.
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