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体外动态模型中抗菌作用动力学的定量分析。

Quantitative analysis of antimicrobial effect kinetics in an in vitro dynamic model.

作者信息

Firsov A A, Chernykh V M, Navashin S M

机构信息

Department of Pharmacokinetics, National Research Institute of Antibiotics, Moscow, USSR.

出版信息

Antimicrob Agents Chemother. 1990 Jul;34(7):1312-7. doi: 10.1128/AAC.34.7.1312.

Abstract

Variants of the available methods for estimating antimicrobial effect kinetics in an in vitro dynamic model were analyzed. Two integral parameters characterizing antimicrobial effect duration (TE) and intensity (IE) are suggested to define and analyze the concentration-effect relationships in these models, irrespective of the method of recording. TE is defined by the time from the moment of antibiotic administration to the movement when the bacterial count again reaches its initial level. IE is defined by the area between the microbial growth curves in the presence and absence of an antibiotic. TE and IE were used to quantify the antimicrobial effects of sisomicin on Pseudomonas aeruginosa 58, Escherichia coli 93, and Klebsiella pneumoniae 5056, simulating the pharmacokinetic profiles of the drugs observed following intramuscular administration in therapeutic doses, including the variability of aminoglycoside concentrations in human blood.

摘要

分析了体外动态模型中估计抗菌作用动力学的现有方法的变体。建议使用两个表征抗菌作用持续时间(TE)和强度(IE)的积分参数来定义和分析这些模型中的浓度-效应关系,而不管记录方法如何。TE定义为从给予抗生素的时刻到细菌数量再次达到其初始水平时的移动时间。IE定义为存在和不存在抗生素时微生物生长曲线之间的面积。使用TE和IE来量化西索米星对铜绿假单胞菌58、大肠杆菌93和肺炎克雷伯菌5056的抗菌作用,模拟治疗剂量肌内给药后观察到的药物药代动力学特征,包括人血中氨基糖苷类浓度的变异性。

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