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  • Title: Changes in some aspects of platelet function with improvement of glycaemic control over 6 months.
    Author: Collier A, Tymkewycz PM, Matthews DM, Jones RL, Clarke BF.
    Journal: Diabetes Res; 1987 Jun; 5(2):79-82. PubMed ID: 2443296.
    Abstract:
    Numerous platelet abnormalities, particularly hyperaggregation, have been described in diabetic patients, and it has been suggested that these may contribute towards the pathogenesis of microvascular complications. In the present study, the changes that occur in ADP-induced aggregation, sensitivity to a stable prostacyclin analogue (Iloprost), aggregation-induced thromboxane B2 production and platelet cyclic AMP levels were investigated in 9 young insulin-dependent diabetics, in which the glycaemic control significantly improved in one group (n = 5; HbA1 from 11.9-9.0%) over a 6 month period. With improvement of glycaemic control there was no significant change in the concentration of ADP required to produce 50 percent of the maximum aggregation wave response. However, there was a significant increase in the responsiveness of platelets to Iloprost and increased platelet thromboxane B2 production. There was no significant difference between the basal platelet cAMP levels before or after exposure to Iloprost. This study suggests that with improved short-term glycaemic control, although there are changes in platelet function, there may be no alteration in the homeostatic balance.
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