对Ceftibuten和Avibactam组合的稀释敏感性测试方法评价,针对肠道细菌
O N Walser1, J Howland1, K Jankowski1
1Microbiologics Antibiotic and Microbiome Research Center, Kalamazoo, Michigan, USA.
Journal of clinical microbiology
|October 21, 2025
概括
一种新的口服抗生素组合,ceftibuten和avibactam,显示出治疗耐药格兰氏阴性感染的前景. 敏感性测试方法证实了它对肠杆菌的可靠性能,为IV疗法提供了重要的替代方案.
科学领域:
- 微生物学 微生物学
- 药理学 药理学是指药理学的学科.
- 临床科学 临床科学
背景情况:
- 抗微生物药物耐药性的增加需要新的治疗选择.
- 静脉注射抗生素可能会给医疗保健系统带来压力,不适合所有患者.
- 产生扩展谱β-乳糖酶 (ESBL) 的肠杆菌感染正在增加,需要新的治疗策略.
研究的目的:
- 开发和验证口服塞夫提布/阿维巴克坦 (CTB/AVI) 的敏感性测试方法.
- 评估非标准测试条件对CTB/AVI活动的影响.
- 为了评估CTB/AVI的汁微稀和阿加稀方法之间的相关性.
主要方法:
- 遵循了CLSI M23一级指南,用于参考方法开发.
- 在各种非标准条件下研究了的微稀释试验.
- 与 153 Enterobacterales 分离物使用的阿加稀释方法相关的微稀释结果.
主要成果:
- 在CTB/AVI中,汁微稀和阿加稀方法之间存在很高的相关性 (基本一致性≥90%).
- 在21个交替的汁微稀释试验条件下,CTB/AVI活性基本上不受影响.
- 稳定性的例外包括100倍增加的注射剂密度和5.0的pH值.
结论:
- 口服CTB/AVI在对肠杆菌的敏感性测试中显示出可靠的性能.
- 已确立的测试参数支持CTB/AVI的临床开发,作为IV抗生素的口服替代品.
- 这种组合解决了对抗多药耐药格拉姆阴性感染的有效口服治疗的关键需求.
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