• 文献标题:   Synergistic antibacterial effect of graphene-coated titanium loaded with levofloxacin
  • 文献类型:   Article
  • 作  者:   SUN JY, LIU XL, LYU CQ, HU YH, ZOU DR, HE YS, LU JY
  • 作者关键词:   graphene, coating, antibacterial, levofloxacin, drug delivery
  • 出版物名称:   COLLOIDS SURFACES BBIOINTERFACES
  • ISSN:   0927-7765 EI 1873-4367
  • 通讯作者地址:  
  • 被引频次:   7
  • DOI:   10.1016/j.colsurfb.2021.112090 EA SEP 2021
  • 出版年:   2021

▎ 摘  要

In this study, graphene coating was introduced to the modified titanium surface to prevent bacterial infection in oral implants. We modified the titanium surface through SLA and silanization treatment and then coated the surface with graphene. The structure and surface properties were characterized by XPS and SEM. Graphenecoated titanium sheet was incubated with bacteria to test the antibacterial property, which was enhanced by adsorption and release of levofloxacin. We further implanted the graphene-coated titanium sheet loaded with levofloxacin into rabbits to test the antibacterial properties in vivo. The graphene coating exhibited inherent antibacterial properties through membrane stress and the generation of reactive oxygen species (ROS). When loaded with levofloxacin, the graphene coating exhibited a synergistic antibacterial effect and effectively prevented bacterial infections following the implantation. The graphene coating is promising to improve the antibacterial functions of oral implant surfaces to prevent bacterial infection.