定制涂层,以提高-合金在可吸收植入物中的性能
David Hernández-Escobar1, Natalia Pajares-Chamorro1, Xanthippi Chatzistavrou1,2
1Department of Chemical Engineering and Materials Science, Michigan State University, East Lansing, Michigan 48824, United States.
ACS biomaterials science & engineering
|December 18, 2023
概括
-植入物的可生物降解涂层提高了生物相容性和抗菌性质. 这些可增强吸收的金属植入物为永久装置提供了有希望的替代品,减少了后续手术的需要.
科学领域:
- 生物材料科学 生物材料科学
- 材料工程 材料工程 材料工程
- 医疗器械技术 医疗器械技术
背景情况:
- 可吸收的金属对临时医疗植入物来说是有前途的,但实现最佳的机械性能和降解率仍然具有挑战性.
- (Mg) 和铁 (Fe) 已被广泛研究,但 (Zn) 和其合金由于其生物相容性和降解概况而提供了有利的替代品.
- 生物降解涂料可以显著提高生物性能,并控制可吸收金属植入物的降解.
研究的目的:
- 研究各种生物降解涂料对Zn-3Mg基质体内降解,细胞相容性和抗菌活性的影响.
- 评估酸 (ZnP),原蛋白 (Col) 和添加银的生物活性玻璃纳米粒子 (AgBGNs) 涂层在增强可吸收植入物性能方面的潜力.
- 探索战略性材料-涂层组合,以应对当前医疗植入物技术中的挑战.
主要方法:
- 在 Zn-3Mg 基板上合成四种不同的生物降解涂层 (ZnP,Col,AgBGNs),使用化学转化和旋转涂层技术.
- 在生理条件下评估体外降解行为,包括体重减轻和腐蚀率.
- 通过细胞活力测定评估细胞相容性,并评估针对相关病原体的抗菌活性.
主要成果:
- 酸 (ZnP) 涂层证明了控制的体重减轻和降低腐蚀率,保持生理pH值.
- 来自未涂层,ZnP涂层和Col-AgBGN涂层样本的提取物在增加度时支持更高的细胞活力.
- 所有测试的涂层都显著降低了细菌活力,而Col-AgBGN涂层显示出最明显的效果.
结论:
- 可生物降解涂料与Zn-3Mg基板的战略组合可以有效地定制植入物特性,以改善患者治疗.
- 涂层Zn-3Mg合金显示出下一代临时医疗植入物的潜力,具有增强的生物相容性和抗菌功效.
- 这种方法提供了一种途径,可以缓解与永久植入物相关的并发症,并减少修复手术的需要.
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