Please use this identifier to cite or link to this item:

TitleThe effect of silver nanoparticles and nystatin on mixed biofilms of Candida glabrata and Candida albicans on acrylic
Author(s)Silva, Sónia Carina
Pires, Diana Priscila Penso
Henriques, Mariana
Monteiro, D. R.
Negri, M.
Gorup, L. F.
Camargo, E. R.
Barbosa, D. B.
Williams, D. W.
Oliveira, Rosário
Azeredo, Joana
KeywordsOral candidosis
silver nanoparticles
Issue date2013
PublisherInforma Healthcare
JournalMedical Mycology
Abstract(s)The purpose of this study was to examine the effect of silver nanoparticles (SN) and nystatin on pre-formed biofilms (single and dual species combinations of Candida glabrata and Candida albicans). Thus, adhesion and biofilm assays were performed on acrylic surface in presence of artificial saliva (AS), during 2 h and 48 h, respectively. Candida glabrata and C. albicans adhered cells were determined by counting recovered colony forming units (CFUs) on CHROMagar® Candida. In addition, crystal violet (CV) staining, as an indicator of biomass, was used to quantify biofilm formation ability. Furthermore, pre-formed biofilms were treated either with SN or nystatin and its effects on biofilms evaluated after 24 h. The results showed that both Candidia species adhered to, and formed biofilms on acrylic. Candida glabrata biofilms had significantly higher CFUs compared with biofilms of C. albicans (P<0.05). In the case of dual species biofilms, the number of CFUs for each species was equivalent to that encountered in the single species studies. SN or nystatin was able to reduce the biomass and CFUs of single and dual species biofilms (P<0.05). SN had a significantly greater reduction of C. glabrata biofilm biomass comparatively to C. albicans biofilms (P<0.05). Furthermore, nystatin was more effective in reducing the CFUs of dual species biofilms compared with single species biofilms (P<0.05). In summary, C. glabrata and C. albicans can co-exist in biofilms without apparent antagonism towards each other and SN and nystatin were able to destroy pre-formed Candida biofilms.
AccessRestricted access (UMinho)
Appears in Collections:CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series

Files in This Item:
File Description SizeFormat 
Med mycol 2013.pdf
  Restricted access
257,05 kBAdobe PDFView/Open

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu ORCID