PB/CeO2纳米颗粒调节反应性氧物种用于控制Enterococcus faecalis根通道感染
Huiwen Wang1,2,3, Yuting Wu1,2,3, Mingrui Dai1,2,3
1Department of Endodontics, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, People's Republic of China.
概括
普鲁士蓝/二氧化 (PB/CeO2) 纳米颗粒对Enterococcus faecalis及其生物膜,特别是过氧化具有强大的抗菌作用. 这些纳米颗粒为根管治疗提供了一个生物相容的消毒策略.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 生物医学工程 生物医学工程
背景情况:
- 菌 (Enterococcus faecalis) (E. faecalis) 由于其耐药性,在内牙感染中构成了重大挑战.
- 开发具有较低细胞毒性的新型抗菌剂对于有效的根管消毒至关重要.
研究的目的:
- 调查普鲁士蓝/二氧化 (PB/CeO2) 纳米颗粒对E. faecalis及其生物膜的抗菌疗效,作用机制和细胞毒性.
- 评估PB/CeO2纳米颗粒作为根管治疗的消毒策略的潜力.
主要方法:
- PB/CeO2纳米颗粒的合成和表征.
- 使用殖民地形成单位 (CFU) 试验评估抗菌活性.
- 通过反应性氧物种 (ROS) 和抗氧化剂系统分析对抗菌机制的研究.
- 使用共聚焦激光扫描显微镜 (CLSM) 和扫描电子显微镜 (SEM) 评估生物膜破坏.
- 使用细胞计数工具-8 (CCK-8) 测定和体内组织学检查进行细胞毒性评估.
主要成果:
- PB/CeO2纳米颗粒对E. faecalis表现出显著的抗菌活性,增强了过氧化 (H2O2).
- 这些纳米颗粒有效地破坏了牙切片上的E. faecalis生物膜.
- PB/CeO2纳米颗粒诱导了ROS的产生,破坏了细菌的抗氧化剂防御系统,并损坏了细胞膜,导致细菌死亡.
- 在适当的度下,纳米粒子在体外和体内表现出良好的生物相容性.
结论:
- PB/CeO2纳米颗粒呈现出一种新的多功能纳米复合物,具有强大的抗菌作用,对抗E. faecalis及其生物膜.
- PB/CeO2纳米颗粒的低细胞毒性和良好的生物相容性使它们成为根管道消毒的有希望的候选者.
- 这项研究提供了一种新的消毒策略,用于使用先进的纳米材料进行根管治疗.
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