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生物相容的与抗生素结合的-纳米颗粒作为生物医疗设备的潜在涂层材料
Sarah McGlumphy1,2, Aakriti Damai1,2, Lena Salameh1
1Department of Chemistry, Marshall University, Huntington, WV, 25755, USA.
Heliyon
|June 4, 2024
概括
改性尼丁醇 (NiTi) 纳米颗粒通过降低毒性和预防感染,为金属植入物提供解决方案. 这些生物相容的纳米粒子支持神经细胞生长,并对常见的植入物病原体表现出强大的抗菌活性.
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:
- 金属植入物面临诸如离子漏,模块不匹配和感染风险等挑战.
- 尼醇 (NiTi) 提供形状记忆和超弹性,但在生物相容性和抗菌性方面存在局限性.
- 表面修饰和抗生素功能化是提高植入物性能的关键策略.
研究的目的:
- 开发和表征表面修饰的NiTi纳米颗粒,以改善生物医学应用.
- 评估修改的NiTi纳米颗粒的生物相容性和神经再生潜力.
- 评估抗生素功能化NiTi纳米颗粒对常见的植入物相关细菌的抗菌疗效.
主要方法:
- 用酸单层修改了NiTi纳米颗粒,并用triaxone和vancomycin进行了功能化.
- 使用元素分析和显微镜技术证实了表面的修改.
- 通过神经母细胞瘤细胞培养来评估生物相容性,并对大肠杆菌,S. marcescens和B. subtilis进行抗菌活性测试.
主要成果:
- 表面的修改是稳定的,由元素组成 (Ni,Ti,P) 和有序的薄膜形成证实.
- 修改后的NiTi纳米颗粒显示出高生物相容性,支持神经母细胞瘤细胞存活和神经细胞扩展.
- 功能化NiTi纳米粒子对大肠杆菌,S. marcescens和B. subtilis表现出显著的抗菌活性.
结论:
- 表面修饰的NiTi纳米颗粒显示出作为金属骨头和神经植入物的生物相容性涂层的前景.
- 开发的纳米粒子有效地抑制了与植入物感染相关的常见细菌.
- 这种方法解决了重建性手术的关键挑战,提高了植入物安全性和有效性.
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