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通过对植入物表面的pH敏感智能涂层进行有针对性的感染控制和组织集成
Marta Maria Alves Pereira1,2, Rodolfo Debone Piazza3, Paula Aboud Barbugli1
1Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University (UNESP), Araraquara, São Paulo 14801-903, Brazil.
ACS applied materials & interfaces
|December 23, 2025
概括
植入物的新型刺激反应涂层可以提供抗感染和炎症的药物. 这种智能涂层增强了组织的整合,并显示出有希望的抗微生物和抗炎作用,以获得更好的植入结果.
科学领域:
- 生物材料科学 生物材料科学
- 药物输送系统 药物输送系统
- 植入物学 植入物学
背景情况:
- 环植入物感染和炎症对 (Ti) 植入物构成重大挑战.
- 目前的治疗方法往往缺乏局部控制,并可能导致不良反应.
- 需要先进的涂层,可以提供有针对性的药物输送,并促进组织融合.
研究的目的:
- 为Ti植入物开发和评估一种对刺激有反应的药物输送涂层.
- 评估涂层控制药物释放的能力,表现出抗微生物活性,并促进软组织密封.
- 为了研究涂层的细胞相容性和in vivo免疫调节作用.
主要方法:
- 一层一层 (LbL) 涂层的制造,其中包括四环素 (TC) 复合与β环极 (βCD) 和对pH反应的聚甲酸 (PMAA) 薄膜.
- 涂料性能的表征,包括药物释放,水友性和表面粗性.
- 在实验室中使用细胞培养和原基质进行细胞兼容性测试.
- 对人类唾液衍生的生物膜进行抗菌疗效测试.
- 在老鼠皮下模型中进行体内评估,以评估免疫反应.
主要成果:
- LbL/TCβCD/PMAA涂层显示药物释放受控,并且具有有利的表面特性.
- 在体外研究中没有观察到细胞毒性作用;观察到增强的细胞相互作用.
- 广泛的抗微生物活性被证实对牙植入物感染的关键病原体.
- 活体研究显示,炎症显著减少,原沉积增加,CD206表达升高,表明组织修复.
结论:
- 刺激反应性涂层有效地在局部输送药物,以对抗感染和炎症.
- 涂层促进了有利的细胞相互作用,并增强了软组织的整合.
- 这种先进的涂层策略有望改善Ti植入物的性能和患者的治疗结果.
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