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Biocompatible nano-gallium/hydroxyapatite nanocomposite with antimicrobial activity

  • Mario KurtjakEmail author
  • Marija Vukomanović
  • Lovro Kramer
  • Danilo Suvorov
Biomaterials Synthesis and Characterization Original Research
Part of the following topical collections:
  1. Biomaterials Synthesis and Characterization

Abstract

Intensive research in the area of medical nanotechnology, especially to cope with the bacterial resistance against conventional antibiotics, has shown strong antimicrobial action of metallic and metal-oxide nanomaterials towards a wide variety of bacteria. However, the important remaining problem is that nanomaterials with highest antibacterial activity generally express also a high level of cytotoxicity for mammalian cells. Here we present gallium nanoparticles as a new solution to this problem. We developed a nanocomposite from bioactive hydroxyapatite nanorods (84 wt %) and antibacterial nanospheres of elemental gallium (16 wt %) with mode diameter of 22 ± 11 nm. In direct comparison, such nanocomposite with gallium nanoparticles exhibited better antibacterial properties against Pseudomonas aeruginosa and lower in-vitro cytotoxicity for human lung fibroblasts IMR-90 and mouse fibroblasts L929 (efficient antibacterial action and low toxicity from 0.1 to 1 g/L) than the nanocomposite of hydroxyapatite and silver nanoparticles (efficient antibacterial action and low toxicity from 0.2 to 0.25 g/L). This is the first report of a biomaterial composite with gallium nanoparticles. The observed strong antibacterial properties and low cytotoxicity make the investigated material promising for the prevention of implantation–induced infections that are frequently caused by P. aeruginosa.

Keywords

Gallium Silver Nanoparticles Surface Plasmon Resonance Peak Human Lung Fibroblast Gallium Oxide 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

The authors appreciate the financial support of the Slovenian Research Agency (financing of young researchers) and the SCOPES (Scientific co-operation between Eastern Europe and Switzerland) project no. IZ73Z0_152327.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

10856_2016_5777_MOESM1_ESM.pdf (816 kb)
Supplementary Information

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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • Mario Kurtjak
    • 1
    • 2
    Email author
  • Marija Vukomanović
    • 1
  • Lovro Kramer
    • 2
    • 3
  • Danilo Suvorov
    • 1
  1. 1.Jožef Stefan Institute, Advanced Materials DepartmentLjubljanaSlovenia
  2. 2.Jozef Stefan International Postgraduate SchoolLjubljanaSlovenia
  3. 3.Jožef Stefan Institute, Department of Biochemistry and Molecular BiologyLjubljanaSlovenia

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