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中国真菌学杂志 2023, Vol. 18  Issue (2): 135-139.

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蒙特卡洛模拟法评价念珠菌性尿路感染时氟康唑的给药方案

张梦翔, 徐玥玮, 杨满琴   

  1. 安徽中医药大学第二附属医院药学部, 合肥 230061
  • 收稿日期:2022-06-17 出版日期:2023-04-28 发布日期:2023-05-26
  • 通讯作者: 杨满琴,E-mail:282059179@qq.com E-mail:282059179@qq.com
  • 作者简介:张梦翔,男(汉族),硕士研究生,主管药师.E-mail:tojosaki@qq.com
  • 基金资助:
    安徽中医药大学校级科研项目(2019zryb23)

Clinical dosage regimens of fluconazole evaluated by Monte Carlo simulation in candidal urinary tract infection

ZHANG Mengxiang, XU Yuewei, YANG Manqin   

  1. Department of Pharmacy, The second Affiliated Hospital of Anhui University of Traditional Chinese Medicine, Hefei 230061, China
  • Received:2022-06-17 Online:2023-04-28 Published:2023-05-26

摘要: 目的 结合氟康唑的药动/药效(PK/PD)模型,运用蒙特卡洛模拟2种氟康唑给药方案对白念珠菌及光滑念珠菌引起的真菌性尿路感染的治疗效果以提示临床在不同情况下选择有效地给药方案。方法 回顾性收集我院2020年1月至2021年12月这两年内通过PHOENIX100全自动微生物鉴定药敏分析系统检测过氟康唑对其最小抑菌浓度(minimum inhibitory concentration,MIC)值的真菌性尿路感染患者尿液标本中分离出的白念珠菌及光滑念珠菌,并运用蒙特卡洛模拟法分别模拟两种常见的氟康唑给药方案对"5 000名念珠菌致真菌性尿路感染患者"的临床疗效,得到达标概率(probability of target attainment,PTA),并计算各方案以AUIC≥25抗感染成功为目标阈值的累计反应分数(cumulative fraction of response,CFR)。结果 共计分离出白念珠菌、光滑念珠菌分别73株与108株(共计181株),其对氟康唑的耐药率分别为12.3%、57.4%。200 mg/d给药方案的氟康唑对于白念珠菌及光滑念珠菌的CFR均小于90%(分别为85.85%和38.08%),400 mg/d给药方案的氟康唑对于白念珠菌的CFR>90%(为90.15%),对光滑念珠菌的CFR<90%(为45.54%)。当白念珠菌及光滑念珠菌的MIC≤4 mg/L时,2种给药方案的PTA均大于90%,当白念珠菌及光滑念珠菌的MIC≤8 mg/L时,400 mg/d的给药方案PTA均大于90%。结论 400 mg/d的氟康唑对于白念珠菌感染导致的尿路感染能达到满意的抗感染治疗效果,而对于光滑念珠菌导致的尿路感染时,两种治疗方案均不能达到满意的抗感染治疗效果,存在较大治疗失败风险。对于此类耐氟康唑念珠菌感染导致的尿路感染,氟康唑治疗成功概率低,建议采用相关指南推荐的其他药物例如两性霉素B进行治疗。

关键词: 真菌性尿路感染, 蒙特卡洛模拟, 给药方案, 念珠菌属

Abstract: Objective To provide reference for clinical individual medication of fluconazole by combining PK/PD and Monte Carlo simulation. Methods Candida albicans and Candida glabrata strains isolated from urine samples of patients with urinary tract infection in our hospital from January 2020 to December 2021 were collected. The distributions of MICs(minimum inhibitory concentrations,MICs) of fluconazole to Candida albicans and Candida glabrata were summarized as well as the pharmacokinetic parameters of fluconazole. Using probability of target attainment (probability of target attainment,PTA) and cumulative fraction of response(cumulative fraction of response,CFR)as indexes,crystal ball software 11.1.2.4 was used for Monte Carlo simulation of different dosage regimens. Results A total of 73 strains of Candida albicans and 108 strains of Candida glabrata were isolated (181 strains in total). The resistance rates to fluconazole were 12.3% and 57.4% respectively. The CFRs of 200 mg/d fluconazole for Candida albicans and Candida glabrata were both less than 90%(85.85% and 38.08% respectively). The CFR of 400 mg/d fluconazole for Candida albicans was more than 90%(90.15%), and that for Candida glabrata was less than 90%(45.54%). When the MICs of Candida albicans and Candida glabrata were ≤4 mg / L, the PTAs of 200 mg/d were greater than 90%; and when the MICs of Candida albicans and Candida glabrata were ≤8 mg / L, the PTAs of 400 mg/d were greater than 90%. Conclusions 400 mg/d fluconazole can be up to standard for urinary tract infection caused by Candida albicans infection,conversely, both 2 of dosage regimens can not be up to standard in Candida glabrata urinary tract infection. It is recommended to use other drugs recommended by relevant guidelines, such as amphotericin B.

Key words: fungal urinary tract infection, Monte Carlo simulation, dosage regimens, Candida spp.

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