Nanomaterials (Jan 2022)

Activity of <i>Fusarium oxysporum</i>-Based Silver Nanoparticles on <i>Candida</i> spp. Oral Isolates

  • Maísa Santos Fonseca,
  • Daniela Méria Rodrigues,
  • Ana Rita Sokolonski,
  • Danijela Stanisic,
  • Luiz Marcelo Tomé,
  • Aristóteles Góes-Neto,
  • Vasco Azevedo,
  • Roberto Meyer,
  • Danilo Barral Araújo,
  • Ljubica Tasic,
  • Ricardo Dias Portela

DOI
https://doi.org/10.3390/nano12030501
Journal volume & issue
Vol. 12, no. 3
p. 501

Abstract

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Candida spp. resistant to commercially available antifungals are often isolated from patients with oral candidiasis, a situation that points to the need for the development of new therapies. Thus, we evaluated the activity of Fusarium oxysporum-based silver nanoparticles (AgNPs) on Candida spp. isolated from denture stomatitis lesions. Candida isolates were molecularly identified and submitted to susceptibility assays using AgNPs and commercial fungicides. The interference on biofilm formation and the mechanisms of action of AgNPs on Candida spp. were also investigated. Scanning electron microscopy was used to evaluate the morphology of AgNP-treated Candida. Candida albicans was the most frequent species isolated from denture stomatitis cases. All Candida spp. were susceptible to AgNPs at low concentrations, except Candida parapsilosis. AgNPs caused surface damage, cell disruption, and biofilm formation inhibition. The ergosterol supplementation protected C. albicans against the AgNP action. AgNPs are effective against Candida spp. and can be faced as a promising new therapeutic agent against oral candidiasis.

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