Population Semiphysiologic Kinetic Modeling and Simulation of Plasma Triglyceride Levels After Soybean Oil–Based Intravenous Lipid Emulsion Administration in Rats:
2017
Background: Soybean oil–based intravenous lipid emulsion (SO-ILE) has clinical utility as an energy source and in lipid rescue therapy. However, an excessive infusion rate of SO-ILE in routine use and in lipid rescue therapy may cause serious side effects. There is little information about plasma triglyceride (TG) kinetics following SO-ILE administration. The present study aimed to develop a population semiphysiologic kinetic model of TG and to predict the TG kinetics even at extremely high concentrations in rats. Materials and Methods: TG concentration profiles after intravenous bolus (0.1, 0.25, 0.5, 1.0, 1.5, and 2.0 g/kg) or infusion (3.0 g/kg/h for 1 hour) of SO-ILE to rats were analyzed by a kinetic model constructed with 4 pathways: apolipoprotein acquisitions, zero-order catabolism, first-order uptake to storage sites, and zero-order secretion from storage sites. The developed model was subjected to internal and external validation. Results: Plasma TG concentrations appeared to decline in a biphas...
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