Copper-containing mesoporous bioactive glass coatings on orbital implants for improving drug delivery capacity and antibacterial activity

Biotechnol Lett. 2014 May;36(5):961-8. doi: 10.1007/s10529-014-1465-x. Epub 2014 Feb 22.

Abstract

Anophthalmic orbit restoration with artificial implants is usually accompanied with the risks of bacterial penetration and implant exposure. Here, we develop a facile evaporation-inducing self-assembly approach to modify the porous hydroxyapatite (pHA) orbital implants by using sol-gel derived CuO-containing mesoporous bioactive glass (Cu-MBG). The Cu-MBG coatings with 0-5 mol% CuO were prepared in the pore wall of pHA by immersion-evaporation-ageing route in the sol precursor of Cu-MBG. Brunauer-Emmett-Teller and Barrette-Joyner-Halenda analyses showed that the specific surface area and pore volume were slightly decreased with increasing CuO content, while the Cu-MBG-modified pHA maintained a sustained release of ofloxacin and significantly inhibited the bacterial viability (Staphylococcus aureus and Escherichia coli). These studies demonstrate that the Cu-MBG modification provides an effective and facile strategy to endow combined biological performances of pHA orbital implants and potentially reduce implant-related side effects.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anti-Bacterial Agents / chemistry*
  • Anti-Bacterial Agents / pharmacokinetics
  • Copper / chemistry*
  • Drug Delivery Systems / methods*
  • Glass / chemistry*
  • Orbital Implants*
  • Porosity

Substances

  • Anti-Bacterial Agents
  • Copper