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  • Title: Reduced glucose transport and increased binding of insulin in adipocytes from diabetic and fasted rats.
    Author: Wieringa T, Krans HM.
    Journal: Biochim Biophys Acta; 1978 Feb 01; 538(3):563-70. PubMed ID: 626754.
    Abstract:
    1. Animals made diabetic by injection of streptozotocin or animals after 3 days of fasting show decreased insulin levels and a decrease in mean cell diameter of adipocytes from epidydymal fat pads in comparison with cells from normal animals. 2. 14CO2 production from D-[U-14C]glucose is impaired in diabetic and fasted animals both in presence or in absence of a concentration of insulin stimulating 14CO2 production maximally. 3. Insulin binding is increased in adipocytes from diabetic and fasted animals due to changes in affinity. 4. Transport studies show that basal and insulin stimulated 2-deoxy[1-14C]-glucose transport is decreased in absolute terms due to a decrease in V and an increase in Km. 5. The relative stimulatory effect of insulin is impaired in adipocytes of diabetic and fasted animals. 6. A shift of the maximal effect of insulin to lower insulin levels is seen in these cells.
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