Pharmacokinetics and pharmacodynamics of lispro-insulin in hemodialysis patients with diabetes mellitus.
2003
Objective: Lispro-insulin, after subcutaneous injection in patients with normal renal function, is absorbed faster and has a faster onset of action when compared to regular insulin. However, the pharmacokinetics and pharmacodynamics of lispro-insulin in renal failure have not yet been investigated. Patients and methods: Eight patients with diabetes mellitus on long-term hemodialysis received an individualized dose of regular insulin or lispro-insulin in a crossover design. Blood glucose and insulin concentrations were measured before and after the subcutaneous insulin injections. Results: Plasma insulin concentrations increased faster (time of maximum concentration t max 20 vs 40 minutes, p = 0.01) and were higher (standardized maximum concentration C max / D 13.6 vs 6.1 μU/ml/U, p = 0.01) after lispro-insulin compared to regular insulin. The area under the curve, clearance and parameters of the hypoglycemic action for the 2 insulin products did not differ significantly, but there was a trend to minimum blood glucose level (time of the blood glucose minimum, Gt min ) to occur earlier with lispro-insulin (120 vs 210 minutes, p > 0.05). Differences in elimination half-life and volume of distribution were explained by flip-flop pharmacokinetics in the case of regular insulin. Conclusions: In hemodialysis patients with diabetes mellitus, lispro-insulin is absorbed faster than regular insulin. Differences in the effects of lispro-and regular insulin can be explained by the differences in pharmacokinetics.
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