带有抗生素的超高分子量聚乙烯
Sashank Lekkala1, Nicoletta Inverardi1,2, Jean Yuh1
1Harris Orthopaedic Laboratory, Massachusetts General Hospital, Boston, MA, 02114, USA.
Macromolecular bioscience
|December 14, 2023
概括
这项研究探讨了将抗生素加载到用于关节置换植入物的超高分子量聚乙烯 (UHMWPE) 中. 结果显示,UHMWPE可以提供有效的抗生素剂量来对抗周围假肢关节感染 (PJI).
科学领域:
- 生物材料科学 生物材料科学
- 整形外科手术 整形外科手术
- 传染性疾病 传染性疾病
背景情况:
- 周围假肢关节感染 (PJI) 是全面关节置换后的一个重大并发症.
- 目前的治疗方法通常涉及带有抗生素的聚甲基甲酸 (PMMA) 间隔器,这些间隔器不承载载荷.
- 需要功能性植入物材料,也可以提供抗生素来预防或治疗PJI.
研究的目的:
- 研究将各种抗生素纳入超高分子量聚乙烯 (UHMWPE) 的可行性.
- 评估充满抗生素的UHMWPE的稳定性和药物释放特性.
- 评估UHMWPE对常见PJI病原体的体外抗菌疗效.
主要方法:
- 抗生素被纳入UHMWPE通过压缩成型与不同的负载度.
- 使用热重力学分析和核磁共振光谱学分析药物稳定性.
- 在体外测试了抗菌功效对抗PJI的主要原因 - - 葡萄球菌.
主要成果:
- UHMWPE成功地结合了一系列抗生素,保持了药物稳定性.
- 预测的关节内药物度至少在3周内保持在最低抑制度以上.
- 在体外试验中,从植入物表面的一小部分表现出足够的抗菌活性来对抗葡萄球菌.
结论:
- UHMWPE是一种可行的材料,用于开发功能性,抗生素排泄的植入物,用于预防或治疗PJI.
- 这种方法提供了一个有前途的策略,将承载功能与局部抗生素输送相结合.
- 从UHMWPE表面向的抗生素化显示出有效打击葡萄球菌PJI的潜力.
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