Suppr超能文献

通过共混或物理吸附掺入环丙沙星的聚乳酸-羟基乙酸共聚物(PLGA)电纺支架的抗菌性能

Antibacterial Properties of PLGA Electrospun Scaffolds Containing Ciprofloxacin Incorporated by Blending or Physisorption.

作者信息

Buck Emily, Maisuria Vimal, Tufenkji Nathalie, Cerruti Marta

机构信息

Department of Mining and Materials Engineering, McGill University, Montréal, Québec H3A 0C5, Canada.

Department of Chemical Engineering, McGill University, Montréal, Québec H3A 0C5, Canada.

出版信息

ACS Appl Bio Mater. 2018 Sep 17;1(3):627-635. doi: 10.1021/acsabm.8b00112. Epub 2018 Aug 31.

Abstract

Electrospun fibers are excellent candidates for wound dressings and tissue engineering scaffolds. To actively prevent infection during wound healing, the electrospun fibers can be loaded with antimicrobial agents, such as antibiotics or natural antimicrobials. Different methods have been used to incorporate antimicrobial agents in electrospun fibers during the electrospinning process, including blending, coaxial electrospinning, and emulsion electrospinning, to provide controlled release of the agent. Some evidence suggests that a burst release of antimicrobials through physical adsorption, or physisorption, may offer improved antibacterial properties, but a comparison between physisorbed and blended antimicrobial agents has not been conducted. In this study, the antimicrobial and release properties of poly(lactide--glycolide) electrospun fibers containing either blended or physisorbed ciprofloxacin are compared using disks containing similar initial amounts of ciprofloxacin. The results demonstrate that physically adsorbed ciprofloxacin provides more effective antibacterial properties than blended ciprofloxacin up to 48 h against PA14, , and regardless of initial loading due to a faster release of the antibiotic in the first 6 h. However, beyond 24 h, blended ciprofloxacin retained the clear zones better than physisorbed ciprofloxacin due to a continuous release. Physisorption offers a simple approach for incorporating antibiotics in electrospun fibers for stronger short-term antibacterial effects and may be applied to scaffolds containing blended antibiotics to sustain antibacterial properties for long-term wound dressings.

摘要

电纺纤维是伤口敷料和组织工程支架的理想选择。为了在伤口愈合过程中积极预防感染,电纺纤维可以负载抗菌剂,如抗生素或天然抗菌剂。在静电纺丝过程中,人们采用了不同的方法将抗菌剂掺入电纺纤维中,包括共混、同轴电纺和乳液电纺,以实现抗菌剂的控释。一些证据表明,通过物理吸附(即物理吸附)实现抗菌剂的突发释放可能会提供更好的抗菌性能,但尚未对物理吸附的抗菌剂和共混的抗菌剂进行比较。在本研究中,使用含有相似初始量环丙沙星的圆盘,比较了含有共混或物理吸附环丙沙星的聚(丙交酯-乙交酯)电纺纤维的抗菌性能和释放特性。结果表明,在长达48小时内,物理吸附的环丙沙星比共混的环丙沙星对PA14、、更具有效的抗菌性能,无论初始负载量如何,这是由于抗生素在前6小时释放速度更快。然而,超过24小时后,由于持续释放,共混的环丙沙星比物理吸附的环丙沙星保留的透明区更好。物理吸附为将抗生素掺入电纺纤维中提供了一种简单的方法,以实现更强的短期抗菌效果,并且可应用于含有共混抗生素的支架,以维持长期伤口敷料的抗菌性能。

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍。

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索

文档翻译

学术文献翻译模型,支持多种主流文档格式。

立即体验