通过NO发展的共价有机框架 (COFs) 的力量推动PEEK植入物的多模式疗法
Leizhen Huang1, Meixuan Du1, Dan Sun2
1Analytical & Testing Center, Department of Orthopedic Surgery and Orthopedic Research Institute & West China Hospital, Sichuan University, Chengdu, 610065, China.
Small (Weinheim an der Bergstrasse, Germany)
|November 3, 2023
概括
这项研究引入了新的NO-演变纳米颗粒,集成到3D打印的骨架中,用于先进的骨感染治疗. 这种多模式的方法结合了氧化 (NO) 气体和光热疗法 (PPT) 以加强骨愈合和感染控制.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术 纳米技术
- 整形外科手术 整形外科手术
背景情况:
- 骨感染和骨髓炎带来了重大挑战,通常需要侵入性治疗.
- 目前的治疗方法,包括抗生素,面临着细菌耐药性和局部有效性等局限性.
- 需要创新的骨植入物,提供多模式的治疗策略.
研究的目的:
- 开发和评估用于骨组织工程的新型无NO演变核心纳米粒子 (NC@Fe).
- 为了使3D打印的聚乙乙基 (PEEK) 脚手架与NC@Fe功能化,用于多式模式的骨疗法.
- 研究氧化 (NO) 气体治疗和光热疗法 (PPT) 的联合疗效,用于治疗骨感染并促进骨再生.
主要方法:
- 制造带有BNN6的COF@Fe3O4纳米粒子 (NC@Fe) 作为NO捐赠剂和光热剂.
- 用NC@Fe纳米粒子对3D打印的PEEK支架进行修改.
- 在体外和体内研究,以评估抗菌活性,骨质生成和血管生成.
- 使用近红外 (NIR) 激光照射触发NO释放和光热转换.
主要成果:
- 在NIR照射下,NC@Fe纳米粒子有效释放了NO,并在NIR照射下产生了热量.
- 修改后的支架显示出对与设备相关的感染具有显著的抗菌疗效.
- 在体外和体外的结果显示骨质生成和血管生成的增强.
- 联合NO和PPT疗法在消灭细菌和促进骨愈合方面被证明优于传统治疗方法.
结论:
- 开发的NC@Fe改性PEEK支架代表了骨感染的开创性多式疗法.
- 这种方法为依赖抗生素治疗骨髓炎提供了一个有希望的替代方案.
- 这项研究强调了结合NO气体治疗和光热疗法的潜力,以实现先进的骨再生和感染管理.
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