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  • Title: Multiple mealtime administration of biphasic insulin aspart 30 versus traditional basal-bolus human insulin treatment in patients with type 1 diabetes.
    Author: Chen JW, Lauritzen T, Bojesen A, Christiansen JS.
    Journal: Diabetes Obes Metab; 2006 Nov; 8(6):682-9. PubMed ID: 17026493.
    Abstract:
    AIM: The aim of this study was to compare the effect of multiple mealtime injections of biphasic insulin aspart 30 (30% fast-acting insulin aspart in the formulation, BIAsp30) to traditional basal-bolus human insulin regimen (HI) on glycaemic control in patients with type 1 diabetes. METHODS: Twenty-three patients (eight women and 15 men) aged 44.8 (20.6-62.5) years (median and range) with a diabetes duration of 19.5 (1.6-44.6) years completed the study. All eligible patients were randomly assigned to BIAsp30 thrice daily supplied with bedtime NPH insulin when necessary, or basal-bolus HI for 12 weeks and then switched to the alternative regimen for another 12 weeks. The insulin dose adjustments were made by patients on the basis of advice from a diabetes nurse. At end of each treatment period, the patients attended two profile days, 1 week apart for pharmacodynamic and pharmacokinetic assessments. HbA1C was measured at baseline and at the end of each treatment period. A seven-point self-monitored blood glucose (SMBG) was obtained twice weekly. RESULTS: In comparison with HI, multiple mealtime injections of BIAsp30 resulted in a significant reduction in HbA1C[HI vs. BIAsp30 (%, geometric mean and range): 8.6 (7.4-11.4) vs. 8.3 (6.7-9.8), p = 0.013]. During treatment with BIAsp30, nighttime glycaemic control was significantly improved. Day-to-day variation in pharmacodynamics and pharmacokinetics and the rate of hypoglycaemia were not increased with BIAsp30 compared with HI. CONCLUSIONS: In type 1 diabetics, multiple mealtime administration of BIAsp30 compared with traditional basal-bolus human insulin treatment significantly improves long-term glycaemic control without increasing the risk of hypoglycaemia. Despite a higher proportion of intermediate-acting insulin, thrice-daily injections with BIAsp30 do not increase the day-to-day variations in insulin pharmacokinetics and pharmacodynamics.
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