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. 1984 Jan;25(1):105–108. doi: 10.1128/aac.25.1.105

Comparative pharmacokinetics of apalcillin and piperacillin.

H Lode, A Elvers, P Koeppe, K Borner
PMCID: PMC185444  PMID: 6703672

Abstract

The pharmacokinetics of apalcillin and piperacillin, each administered intravenously as a single 2-g dose, were compared in 10 volunteers in a randomized study of crossover design using bioassay and high-pressure liquid chromatographic procedures. The concentrations of both penicillins in serum were determined over a period of 12 h and in urine over 24 h. Concentrations of apalcillin and piperacillin at the end of the 15-min infusion were similar; however, at 8 h, concentrations of piperacillin were below measurable levels, whereas concentrations of apalcillin were still measurable at 10 h. Pharmacokinetic parameters were calculated according to a two-compartment open model. The area under the curve and the half-life for apalcillin were larger than for piperacillin. On the other hand, renal clearance of piperacillin was substantially greater than that of apalcillin. Of the apalcillin excreted via the kidneys, approximately one-fifth was eliminated as two microbiologically inactive penicilloic acid derivatives. The nonrenal clearance of apalcillin was 79% of total clearance. Binding of apalcillin to serum protein was almost twice that of piperacillin.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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