艰难克洛斯特里迪奥伊德的抗微生物敏感性对奥马达环素和比较抗微生物药物
Andrew M Skinner1,2, Laurica A Petrella2, Adam Cheknis2
1Department of Medicine, Loyola University Medical Center, Maywood, IL, USA.
The Journal of antimicrobial chemotherapy
|June 6, 2023
概括
奥马达环素在体外显示出强烈的抗 Clostridioides difficile 活性,这是感染的常见原因. 这种新型抗生素可能会降低患者治疗肺炎或皮肤感染的C. difficile感染的风险.
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:
- 奥马达环素是一种新型氨基甲基环素四环环素,于2018年批准用于社区相关的细菌性肺炎 (CABP) 和急性细菌性皮肤和皮肤结构感染 (ABSSSI).
- 以前的研究表明,奥马达环素可能对Clostridioides difficile具有活性,可能降低感染风险.
研究的目的:
- 为了比较omadacycline的体外抗菌活性与用于CABP和ABSSSI的常用抗菌剂.
- 评估omadacycline在抑制流行Clostridioides difficile菌株中的有效性.
主要方法:
- 使用阿格拉稀释法对八种已批准的抗微生物药物进行了对奥马达环素的测试.
- 分析了200个临床相关的当代Clostridioides difficile分离物,这些分离物代表着不同的菌株类型.
主要成果:
- 奥马达环素显示出低几何平均MIC为0.07毫克/升对抗Clostridioides difficile.
- 在特定菌株中观察到其他抗生素的高耐药率,包括 ceftriaxone (>50%),azithromycin (92%),moxifloxacin (86%),和clindamycin (78%).
- 即使在对多西环素耐药的分离物中,也保持了低的MIC (<0.5 mg/L).
结论:
- 奥马达环素在体外表现出强烈的活性,对抗广泛的当代Clostridioides difficile分离物.
- 没有观察到奥马达环素MIC的显著升高,支持其在管理C. difficile令人担忧的感染中的潜在作用.
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