基于药动学/药效学理论和蒙特卡罗模拟的硫酸黏菌素给药方案效果评价 点击下载
论文标题: 基于药动学/药效学理论和蒙特卡罗模拟的硫酸黏菌素给药方案效果评价
英文标题:
中文摘要: 目的 基于药动学(PK)/药效学(PD)理论和蒙特卡罗模拟(MCS)评价5种硫酸黏菌素给药方案用于常见革兰氏阴性菌感染的治疗效果。方法收集2023年中国细菌耐药监测网中硫酸黏菌素对鲍曼不动杆菌、铜绿假单胞菌、肺炎克雷伯菌、大肠埃希菌、阴沟肠杆菌的最小抑菌浓度(MIC)数据,以游离浓度24h药时曲线下面积与MIC的比值(fAUC0-24h/MIC)≥15为目标靶值进行MCS,获得5种硫酸黏菌素给药方案在不同MIC下达到目标靶值的达标概率(PTA),并进一步计算各给药方案在特定细菌群体中的预期群体PTA,即累积反应分数(CFR),以评价5种硫酸黏菌素给药方案的治疗效果。结果当细菌MIC≤0.5μg/mL时,硫酸黏菌素所有给药方案(50万单位、q12h,50万单位、q8h,75万单位、q12h,75万单位、q8h,100万单位、q12h)的PTA均超过90%;当MIC=1μg/mL时,75万单位、q8h的给药方案用于鲍曼不动杆菌、肺炎克雷伯菌、铜绿假单胞菌、大肠埃希菌、阴沟肠杆菌,以及100万单位、q12h的给药方案用于除铜绿假单胞菌外其余4种细菌的PTA仍可达90%以上;当MIC≥2μg/mL时,硫酸黏菌素上述5种给药方案的PTA均低于90%。对于大肠埃希菌感染,仅50万单位、q12h给药方案的CFR低于90%;对于肺炎克雷伯菌感染,仅75万单位、q8h和100万单位、q12h给药方案的CFR大于90%;对于其他3种细菌,硫酸黏菌素上述5种给药方案的CFR均低于90%。结论当革兰氏阴性菌MIC≤0.5µg/mL时,可选择硫酸黏菌素常规剂量治疗;当MIC=1µg/mL时,则需要增加给药剂量或给药频次。经验性治疗时,除大肠埃希菌外,对于其余4种细菌感染,均需使用超说明书剂量。
英文摘要: OBJECTIVE To evaluate the therapeutic efficacy of 5 regimens of colistin sulfate for common Gram-negative bacilli infection based on pharmacokinetics (PK)/pharmacodynamics (PD) theory and Monte Carlo simulation. METHODS Minimal inhibitory concentration (MIC) data of colistin sulfate against Acinetobacter baumannii, Pseudomonas aeruginosa, Klebsiella pneumoniae, Escherichia coli and Enterobacter cloacae in 2023 were collected from the China Antimicrobial Resistance Surveillance System. Monte Carlo simulation was conducted with the ratio of the area under the concentration-time curve from 0 to 24 hours in the unbound state to the MIC (fAUC0-24 h/MIC) ≥15 as the target value, the probabilities of target attainment (PTA) of 5 regimens of colistin sulfate to achieve the target ratio were obtained at different MIC; and the expected population PTA, specifically the cumulative fraction of response (CFR), for each regimen within a specific bacterial population was further calculated, to evaluate the therapeutic efficacy of the five colistin sulfate regimens. RESULTS When bacterial MIC≤0.5 µg/mL, PTA of all colistin sulfate regimens (500 000 IU, q12 h; 500 000 IU, q8 h; 750 000 IU, q12 h; 750 000 IU, q8 h; 1 000 000 IU, q12 h) were all more than 90%. When bacterial MIC=1 µg/mL, PTA for regimen (750 000 IU, q8 h) against A. baumannii, K. pneumoniae, P. aeruginosa, E. coli and E. cloacae, and for regimen (1 000 000 IU, q12 h) against the other four bacterial species (excluding P. aeruginosa) remained above 90%. When bacterial MIC≥2 µg/mL, PTA of 5 colistin sulfate regimens were all lower than 90%. For E. coli, the CFR of only colistin sulfate regimen (500 000 IU, q12 h) was less than 90%; for K. pneumoniae, the CFR of only colistin sulfate regimen (750 000 IU, q8 h and 1 000 000 IU, q12 h) was greater than 90%; for the other three bacteria, CFR of 5 regimens were all less than 90%. CONCLUSIONS When the MIC of Gram-negative bacteria is less than 0.5 µg/mL, colistin sulfate regimen with a routine dose can be selected for treatment. When MIC was 1 µg/mL, an increase in the dosing amount or frequency is required. The empirical treatment of the other four bacterial infections excluding E. coli requires the use of off-label doses.
期刊: 2025年第36卷第04期
作者: 马颖超;吴瑕;王永静;顾建军;杨秀岭
英文作者: MA Yingchao,WU Xia,WANG Yongjing,GU Jianjun,YANG Xiuling
关键字: 硫酸黏菌素;革兰氏阴性菌;药动学/药效学理论;蒙特卡罗模拟
KEYWORDS: colistin sulfate; Gram-negative bacteria; pharmacokinetics/pharmacodynamics theory; Monte Carlo simulation
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