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RESEARCH PRODUCT

Rapid-Acting Insulin Analogues in Basal-Bolus Regimens in Type 1 Diabetes Mellitus

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ABSTRACT Objective To compare rapid-acting insulin analogues with regular human insulin in terms of hemoglobin A1c, hypoglycemia, and insulin dose when used in a basal-bolus regimen in patients with type 1 diabetes mellitus. Methods MEDLINE and congress proceedings were searched for randomized controlled trials comparing pran- dial insulins in a basal-bolus regimen in adults or children/ adolescents with type 1 diabetes. Studies in pregnancy, ob- servational studies, studies that compared premixed insulin or continuous subcutaneous insulin infusion/insulin pumps, and studies where the basal insulin was also changed were excluded. Only studies reporting baseline-endpoint change in insulin dose, or baseline and/or endpoint values, were included. Results Twenty-eight studies were identified (insulin glulisine, 4; insulin aspart, 7; insulin lispro, 17). Twenty- five studies compared a rapid-acting insulin analogue with regular human insulin, and 3 trials compared 2 rapid-acting insulin analogues. Overall, rapid-acting insulin analogues in a basal-bolus regimen provided similar or greater im- provements in glycemic control than regular human insulin at similar insulin doses, as well as a lower incidence of hypoglycemia. Conclusions Results of the studies identified in this literature review indicate that a basal-bolus regimen with prandial rapid-acting insulin analogue provides advan- tages over basal-bolus regimens using prandial regular hu- man insulin, providing improvements in glycemic control comparable to those obtained with regular human insulin, as well as a lower incidence of hypoglycemia. (Endocr Pract. 2010;16:486-505)