多微生物周围假肢关节感染:用不同的抗微生物药物进行根除
Daniyil Semeshchenko1, Alicia Farinati2, Iván Huespe3
1Hospital Italiano de Buenos Aires, Institute of Orthopaedics 'Carlos E. Ottolenghi', Buenos Aires, Argentina.
Biofouling
|December 15, 2025
概括
将酸银和利醇添加到带有抗生素的骨水泥中,可以增强抗微生物活性,对抗具有挑战性的多微生物生物膜. 与单独使用抗生素相比,这种组合在消除感染方面显示出更好的疗效.
科学领域:
- 生物材料科学 生物材料科学
- 传染性疾病 传染性疾病
- 微生物学 微生物学
背景情况:
- 装有抗生素的骨水泥间隔器用于骨科感染,但不能保证完全根除.
- 多微生物生物膜由于其复杂的结构和对抗微生物药物的耐药性而构成重大挑战.
研究的目的:
- 为了比较抗生素装载骨水泥的体外抗菌活性,与多微生物生物膜相比,有或没有额外的抗菌分子.
- 为了评估不同组合的万科米辛,伊米,银酸盐 (SN) 和酸醇的疗效.
主要方法:
- 甲素耐药黄金葡萄球菌 (MRSA),Pseudomonas aeruginosa (PA) 和Candida albicans (CA) 用于在聚氨海绵上创建单微生物和多微生物生物膜.
- 骨头水泥装满了各种组合的万科米,伊米,SN和西利.
- 在体外对开发的生物膜进行了评估,对抗微生物活性进行了评估.
主要成果:
- 范科米辛 + SN + 克西利托尔的组合显示出对MRSA单微生物生物膜的优越活性.
- 对于多微生物生物膜来说,阿密胺+万科米辛+西立醇,阿密胺+万科米辛+SN,以及阿密胺+万科米辛+SN+西立醇对PA最有效.
- 所有测试组合都实现了MRSA的完全根除,但CA的根除仍然不完整.
- 在水泥配方中添加SN和xylitol提高了整体抗菌性能.
结论:
- 将酸银和利醇纳入带有抗生素的骨质水泥中,可以提高其对抗多微生物生物膜的有效性.
- 这些辅助剂提供了一个有前途的策略,以改善具有挑战性的骨科感染的治疗.
- 需要进一步的研究来优化组合,以彻底消灭所有微生物物种,包括Candida albicans.
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