优化针对侵入性Cryptococcus感染的抗真菌剂量:最小抑制度分布和2010-2023年间的药理动力学/药理动力学见解 抗菌检测领导和监测数据
Chia-Ying Liu1,2, Chih-Cheng Lai3,4, Chun-Chung Hsueh5
1Department of Infectious Diseases and Department of Hospitalist, Far Eastern Memorial Hospital, New Taipei City, Taiwan.
Frontiers in pharmacology
|October 27, 2025
概括
这项研究分析了针对加密球菌病的抗真菌耐药性和药物有效性,发现可纳和沃里可纳对中枢神经系统透是最佳的. 确定了治疗脑膜炎的最佳剂量策略.
科学领域:
- 医学真菌学 医学真菌学
- 传染性疾病 传染性疾病
- 药理学 药理学是指药理学的学科.
背景情况:
- 目前的2024年指导方针建议在全身性密码球菌病中配合脂质体安福特 B (AMB) 和5-素 (5-FC) 进行可纳 (FLC) 治疗.
- 沃里科纳 (VRC),波萨科纳 (POS) 和伊萨武科纳 (ISA) 是替代品,但全球CryptococcusMIC分布和抗真菌PK/PD的数据有限.
- 优化抗真菌剂量需要将MIC数据与PK/PD参数整合起来.
研究的目的:
- 分析全球Cryptococcus分离物与关键抗真菌药物的MIC分布.
- 为了确定主要的Cryptococcus物种的流行病学值.
- 评估抗真菌PK/PD指数的应用,以优化系统性加密球菌病的治疗.
主要方法:
- 从2010-2023年抗真菌抗微生物测试领导和监督数据库中分析MIC分布.
- 确定主要Cryptococcus物种的流行病学截止值.
- 对针对Cryptococcus的抗真菌药物 (azoles和AMB) 的PK-PD关系进行25项研究的综述,重点关注中枢神经系统透.
主要成果:
- 大多数侵袭性菌 (>90%) 隔离物是野生型.
- 可纳 (FLC) 和伏利可纳 (VRC) 显示出更强的中枢神经系统透,这使得它们成为最佳选择.
- 最佳的FLC剂量为800-1,200毫克/天;VRC和ISA剂量不需要调整,但建议进行VRC监测. POS不适合用于诱导疗法. 在Cryptococcus脑膜炎/脑膜大脑炎 (MME) 的整合疗法中,ISA优先于POS.
- 一个具有成本效益的诱导方案,用于菌MME涉及单个10毫克/千克剂量的脂质体AMB与1,200毫克/天的FLC和5-FC,或另类VRC结合.
结论:
- 这项研究为MME治疗提供了新的见解,与2024年的指导方针有所不同.
- 结果基于MIC分布和PK-PD指数,为抗真菌选择和剂量提供基于证据的建议.
- 优化治疗策略可以改善系统性加密球菌病患者,特别是MME患者的治疗结果.
相关概念视频
Determination of Multiple Dosing Parameters: Steady-State, Minimum and Maximum Concentrations
231
Gentamicin, an aminoglycoside antibiotic, is commonly administered via intermittent intravenous infusion to treat severe infections. An intermittent one-hour infusion of gentamicin, administered at eight-hour intervals, allows for precise control of plasma drug concentrations, minimizing toxicity while ensuring therapeutic efficacy. Pharmacokinetic principles govern the dynamics of plasma concentrations and can be mathematically described using specific equations.The plasma drug concentration...
231
Pharmacokinetics in Pediatric Patients: Drug Excretion
207
In pediatric medicine, understanding the renal function and drug elimination nuances is crucial for administering safe and effective treatments. Newborns, in particular, display markedly slower renal functions than adults, profoundly affecting how drugs are cleared from their bodies. This slower drug clearance requires clinicians to extend the dosing intervals for many medications to prevent drug accumulation and toxicity while ensuring therapeutic efficacy.One key area where these adjustments...
207
Antimicrobial Effectiveness
897
The effectiveness of antimicrobial agents depends on various factors influencing their ability to eliminate microbial populations. Larger microbial populations require more time for complete eradication, emphasizing the importance of population size analysis when evaluating antimicrobial efficacy.Microbial resistance to antimicrobial agents varies significantly. Highly resilient microorganisms include endospores, gram-negative bacteria, and non-enveloped viruses, while prions are exceptionally...
897
Dosage Regimens: Partial Pharmacokinetic Parameters
147
It is not uncommon for complete drug pharmacokinetic profiles to remain elusive in pharmacokinetics. This necessitates certain educated assumptions by pharmacokineticists to determine appropriate dosage regimens without comprehensive pharmacokinetic data from animal or human studies. One prevalent assumption is setting the bioavailability factor, denoted as F, to 1 or 100%. This assumption caters to the scenario where a drug doesn't achieve full systemic absorption, resulting in the patient...
147
Estimation of k and VD of Aminoglycosides
212
Aminoglycosides are a class of antibiotics used to treat various bacterial infections. Clinicians must determine the elimination rate constant (k) and volume of distribution (VD) to optimize therapeutic efficacy and minimize toxicity. The k value represents the rate at which the drug is removed from the body, and the VD reflects the degree to which the drug distributes into body tissues. Accurately estimating these parameters allows healthcare professionals to tailor drug dosing to individual...
212
Dosage Interval and Administration Route: Determination Methods
220
A medication’s effectiveness largely depends on its appropriate dosage and the route of administration. Dosage ensures that a sufficient drug concentration is maintained in the bloodstream to elicit the desired therapeutic effect without causing toxicity. The route of administration affects the drug's bioavailability, rate of absorption, and onset of action, which are crucial for achieving optimal therapeutic outcomes. Drug dosage calculations are critical to tailoring therapy to...
220


