Combination of CuO nanoparticles and fluconazole: preparation, characterization, and antifungal activity against Candida albicans

  • Iris S. Weitz
  • Michal Maoz
  • Daniel Panitz
  • Sigal Eichler
  • Ester Segal
Research Paper

Abstract

Combination therapy becomes an important strategy in the management of invasive fungal infections and emergence of resistant fungi mutants. In this work, we examine the combination of copper oxide (CuO) nanoparticles (NPs) with fluconazole as potential treatment against the pathogenic fungi, Candidaalbicans. CuO NPs (~7 nm in size) were synthesized with acetate ligands assembled on their surface, as shown by both thermal gravimetric analysis and FTIR spectroscopy. Unlike the commercial CuO (both bulk and 50 nm particles), that are poorly dispersed in water, the interaction with water allows the fine dispersion of the coated CuO NPs and their excellent colloidal stability. The addition of fluconazole to the aqueous CuO dispersion induced spontaneous self-assembly of the NPs into linear pearl-like chains network, shown by cryogenic transmission electron microscopy (cryo-TEM). The antifungal activity of the CuO NPs and their combination with fluconazole (fluconazole–CuO NPs) was studied against C. albicans. The best MIC values were obtained at concentrations as low as 0.2 and 0.3 mg/mL, respectively. The results suggest that fluconazole–CuO NPs can provide a potential alternative treatment for C. albicans infections.

Keywords

Copper oxide Nanoparticles Antifungal Candida albicans Fluconazole Functionalization Health effects 

Supplementary material

11051_2015_3149_MOESM1_ESM.pdf (645 kb)
Supplementary material 1 (PDF 646 kb)

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Copyright information

© Springer Science+Business Media Dordrecht 2015

Authors and Affiliations

  • Iris S. Weitz
    • 1
  • Michal Maoz
    • 1
  • Daniel Panitz
    • 1
  • Sigal Eichler
    • 2
  • Ester Segal
    • 2
    • 3
  1. 1.Department of Biotechnology EngineeringORT Braude CollegeKarmielIsrael
  2. 2.Department of Biotechnology and Food EngineeringTechnion – Israel Institute of TechnologyHaifaIsrael
  3. 3.The Russell Berrie Nanotechnology InstituteTechnion – Israel Institute of TechnologyHaifaIsrael

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