重新利用塞拉麦丁作为抗菌药物,用于治疗医院获得的黄金葡萄球菌感染
Veronica Folliero1, Federica Dell'Annunziata1,2, Biagio Santella1
1Department of Medicine Surgery and Dentistry, University of Salerno, 84081 Baronissi, Italy.
Microorganisms
|September 28, 2023
概括
塞拉墨丁显示强大的抗菌活性对金黄色葡萄球菌,包括耐药菌株. 这种阿弗梅克丁衍生物有效地减少了细菌生长和生物膜的形成,这表明它有可能成为治疗黄金菌感染的新疗法.
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.
- 传染性疾病 传染性疾病
背景情况:
- 多抗药性细菌的兴起需要开发新的抗菌剂.
- 主要被称为杀虫剂的阿维尔麦克丁,尚未广泛研究其抗菌性质.
研究的目的:
- 为了评估selamectin的抗菌活性,一种avermectin,对格拉姆阳性和格拉姆阴性细菌.
- 调查塞拉麦克丁对黄金葡萄球菌的临床分离物,包括耐药菌株和生物膜的疗效.
主要方法:
- 抗菌查对抗菌株的阿弗梅克丁.
- 确定最小抑制度 (MIC90) 和最小生物膜消除度 (MBEC50).
- 扫描电子显微镜 (SEM) 用于细胞表面分析,与安培的协同作用测试,以及细胞内细菌负载减轻的评估.
主要成果:
- 塞拉墨丁抑制了格拉姆阳性细菌,特别是黄金葡萄球菌 (MIC90为6.2μg/mL),但没有抑制格拉姆阴性细菌.
- 塞拉墨丁证明了S. aureus生物膜生物质的剂量依赖性减少 (MBEC50在5.89μg/mL).
- 与安皮西林对抗抗甲基西林的黄金色杆菌观察到协同效应,并显著减少细胞内细菌负载 (81.3%).
结论:
- 塞拉墨丁对黄金葡萄球菌 (Staphylococcus aureus) 具有有前途的抗菌活性,包括多种耐药菌株.
- 塞拉梅克丁有效向金黄色细菌的生物膜,并与安培素表现出协同作用.
- 塞拉墨丁具有较低的毒性,是S. aureus感染的潜在治疗候选物.
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