间歇性的交替磁场在体内减少金属相关生物膜
Sumbul Shaikh1, Norman A Lapin2,3, Bibin Prasad4
1Texas Prostate, Addison, TX, USA.
Scientific reports
|December 17, 2023
概括
使用间歇交替磁场 (iAMF) 的新型非侵入性方法有效地消除了假肢关节感染生物膜. 将iAMF与抗生素结合起来,显著提高了体内生物膜的减少,提供了一个新的治疗范式.
科学领域:
- 生物医学工程 生物医学工程
- 传染性疾病 传染性疾病
- 材料科学 材料科学 材料科学
背景情况:
- 假肢关节感染 (PJI) 是关节整形术的严重并发症,由于具有挑战性的生物膜形成,往往需要切除假肢.
- 目前对PJI的治疗方法有限,特别是从金属植入物表面消除生物膜.
研究的目的:
- 评估间歇交替磁场 (iAMF) 的 in vivo 疗效,以消除金属植入物中的生物膜.
- 评估iAMF与抗生素结合在治疗植入物相关细菌感染中的协同效应.
主要方法:
- 开发一种非侵入性iAMF技术,在植入物表面诱导有针对性的高热.
- 在体内植入生物膜感染模型的建立,使用金黄色葡萄球菌和 Pseudomonas aeruginosa.
- 单独使用iAMF,单独使用抗生素和联合治疗之间的治疗结果的比较.
主要成果:
- 与抗生素相结合的iAMF与单独治疗相比显著减少生物膜负担 (>1日志减少).
- 组合疗法对S. aureus和P. aeruginosa生物膜均显示出有效性,而不论使用了哪种抗生素.
- 治疗的有效性取决于温度,较高的温度与较大的生物膜减少相关,同时限制组织损伤<1毫米.
结论:
- 非侵入性iAMF治疗,特别是与抗生素相结合时,为治疗假肢关节感染提供了一个有希望的新策略.
- 这种方法为PJI的生物膜根除提供了手术干预的潜在替代方案.
- 温度依赖的疗效和最小的组织损伤突显了iAMF在临床应用中的安全性和潜力.
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