Abstract
Effect of potassium gluconate (K-GL) on K+ uptake of rat erythrocytes was investigated. K-GL produced a significant increase in active K+ transport of Na+-rich erythrocytes, while Na+,K+-ATPase activity of hemoglobin-free ghosts without a glycolytic system was unaffected. When the experiment was carried out in intact erythrocytes, K-GL increased the lactate production and ATP content, and it promoted the methemoglobin reduction rate. In Na+-rich erythrocytes, the glycolysis inhibitors which produced a marked reduction in lactate content abolished the K-GL-induced increase in K+ and ATP content without affecting the KCl-Induced increase. These results suggest that K-GL enhances K+ transport of erythrocytes through acceleration of glycolytic process.
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