抗生素对人工唾液介质中的Burkholderia cepacia复合物的活性
Anusha Shukla1, Shade Rodriguez2, Thea Brennan-Krohn1,3,4
1Department of Pathology, Beth Israel Deaconess Medical Center, Boston, MA, USA.
The Journal of antimicrobial chemotherapy
|September 3, 2024
概括
在囊性纤维化 (CF) 患者中,标准的抗生素测试对Burkholderia cepacia复合体 (Bcc) 感染失败. 需要新的方法来准确预测这些耐药细菌的治疗成功.
科学领域:
- 微生物学 微生物学
- 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:
- 伯克霍德里亚塞帕西亚复合体 (Bcc) 细菌本质上具有耐药性,在囊性纤维化 (CF) 患者中引起严重的肺部感染.
- 目前的抗微生物敏感性测试方法对BCC感染的预测价值有限.
- 试验室条件可能不会准确地反映CF患者体内肺环境.
研究的目的:
- 在标准实验室条件下对抗Bcc的抗生素活性进行比较,与模拟CF肺环境的条件进行比较.
- 评估不同细菌生长条件对抗生素疗效的影响.
主要方法:
- 用标准和人工唾液介质中的两种Bcc菌株进行了时间杀死试验.
- 对标准和高密度细菌注射剂进行了抗生素活性测试.
- 细菌生长通过殖民地计数和resazurin减少来监测.
主要成果:
- 在标准敏感性测试和模拟肺部条件中的活性之间观察到显著的差异.
- 尽管MICs很低,但Ceftazidime在杀时测试中显示出较差的活性.
- 与标准测定相比,托布拉米辛在高密度生长条件下表现出增强的活性.
结论:
- 现有的敏感性测试方法对于Bcc感染是不够的.
- 迫切需要开发出更具临床相关性的Bcc.敏感性测试方法.
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