Abstract
The pharmacokinetics of teicoplanin, a new glycopeptide antibiotic active against gram-positive aerobic and anaerobic bacteria, was studied in adult male volunteers given 2- and 3- mg/ kg doses by a constant-rate 0.5-hr infusion. Serum and urine samples were collected up to 96 hr. Mean peak serum levels after the two doses were 15.7 and 22.4 μg/ml. Postinfusion serum teicoplanin levels showed triexponential decay. A three-compartment body model gave close values for pharmacokinetic parameters after the two doses. The mean half-life of the λ1 phase was 20.3 min, that of the λ2 phase was 2.9 hr, and the half-life of the estimated λ3 phase was 40.5 hr, in good agreement with that of the λZ phase (45.9 hr) calculated from the last urine data. The mean volume of distribution of the central compartment was 0.09 liter/kg and the steady-state volume of distribution using noncompartmental analysis was 0.84 liter/kg. Total clearance averaged 16.05 ml/hr/kg, with renal clearance arbout half this (9.51 ml/hr/kg), calculated by two different methods. The average total recovery of active teicoplanin in urine over 4 days was 52%, suggesting that both renal and nonrenal mechanisms are involved in elimination of the drug. The concentrations of teicoplanin in serum and urine exceeded the MIC (ranging from 0.02 to 2 μg/ml) on many pathogenic organisms for at least 1 day after administration.
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This work was supported in part by a grant from Gruppo Lepetit, Milan, Italy, and by a CNR (National Research Council, Rome, Italy) grant on “Clinical Pharmacology and Rare Diseases.”
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Traina, G.L., Bonati, M. Pharmacokinetics of teicoplanin in man after intravenous administration. Journal of Pharmacokinetics and Biopharmaceutics 12, 119–128 (1984). https://doi.org/10.1007/BF01059273
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DOI: https://doi.org/10.1007/BF01059273