消毒剂的度,组合和暴露时间对细菌和真菌生物膜的消灭产生影响
Emanuela Roscetto1, Donato Di Gennaro2, Tiziana Ascione3
1Department Molecular Medicine and Medical Biotechnology, "Federico II" University, Naples, Italy.
Arthroplasty today
|August 14, 2024
概括
波维- (PI) 和过氧化 (H2O2) 溶液有效地减少了周围假肢关节感染 (PJI) 中的微生物生物膜. 建议5%PI用于1分钟的暴露,而0.3%PI + 0.5%H2O2在3分钟的灌中对格兰氏阳性细菌有效.
科学领域:
- 微生物学 微生物学
- 传染性疾病 传染性疾病
- 生物医学工程 生物医学工程
背景情况:
- 周围假肢关节感染 (PJI) 是关节置换手术的严重并发症.
- 植入物上的微生物生物膜在PJI治疗中构成了重大挑战.
- 消毒剂解决方案对于管理PJI至关重要,需要有效性研究.
研究的目的:
- 评估波维- (PI) 和过氧化 (H2O2) 溶液的抗生物膜活性.
- 为了比较PI和H2O2单独或组合的疗效与PJI相关的微生物生物膜.
- 在PJI管理中确定这些杀菌剂的最佳度和暴露时间.
主要方法:
- 在2天和5天的格拉姆阳性细菌,格拉姆阴性细菌和真菌生物膜上测试消毒剂溶液.
- 使用XTT减小试验量化生物膜代谢活性.
- 评估细菌生存能力与殖民地形成单位数量为老化生物膜.
主要成果:
- 无论PI和H2O2都显示出度依赖的抗生物膜活性,除了E. faecalis等例外.
- 在所有测试的微生物中,5%PI对2天的生物膜最有效.
- 0.3%的PI + 0.5%的H2O2在3分钟内显示出显著的疗效,特别是在5天的生物膜中对格拉姆阳性细菌具有显著的疗效,在降低代谢活动方面表现优于5%的PI.
结论:
- 对于由格拉姆阳性细菌引起的PJI,建议用0.3%PI + 0.5%H2O2进行3分钟的伤口灌.
- 对于具有不同或未知病因的PJI,建议使用5%PI进行1分钟的暴露.
- 这些发现为PJI治疗中消毒剂的使用提供了指导,优化了基于致病剂和生物膜年龄的疗效.
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