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  • Title: Activation of erythrocyte aldose reductase in man in response to glycaemic challenge.
    Author: Lyons PA, Gould S, Wise PH, Palmer TN.
    Journal: Diabetes Res Clin Pract; 1991 Oct; 14(1):9-13. PubMed ID: 1748066.
    Abstract:
    Flux via the polyol pathway, which comprises the enzymes aldose reductase (AR) and sorbitol dehydrogenase (SDH), has been implicated in the debilitating complications of diabetes. Previous studies in this laboratory have indicated that erythrocyte AR activities are increased (by 72%) in insulin-dependent diabetic patients. To investigate the mechanism underlying this activation, the response of AR activity to oral glucose challenge was investigated in eight overnight-fasted human volunteers. Glucose consumption led to a transient activation (by 76%: P less than 0.01) of erythrocyte AR, which paralleled the rise and subsequent fall in blood glucose concentrations. It is concluded that erythrocyte AR activity is acutely modulated in response to hyperglycaemia by an as yet unknown mechanism.
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