D-Glucose and D-galactose influx and efflux rates in human erythrocytes were studied using infinite-cis and zero-trans assay methods. It was found that insulin decreased the infinite-cis Km for both D-glucose and D-galactose influx by 44 and 56%, respectively, while the Vmax was unchanged. The Km for D-glucose efflux in the presence of insulin decreased by 47% when compared to controls, and the change in Vmax was statistically insignificant. If insulin receptors were first down regulated, and...Expand abstract
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Effects of insulin receptor down-regulation on hexose transport in human erythrocytes.
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