Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/25968
Título: | Candida tropicalis biofilms : artificial urine, urinary catheters and flow model |
Autor(es): | Negri, Melyssa Silva, Sónia Carina Henriques, Mariana Azeredo, Joana Svidzinski, Terezinha Oliveira, Rosário |
Palavras-chave: | Candida tropicalis Urinary catheter Flow conditions Biofilm Cell detachment |
Data: | 2011 |
Editora: | International Society for Human and Animal Mycology (isham) |
Revista: | Medical mycology |
Resumo(s): | Adhesion to medical devices and biofilm formation are considered important virulence factors of Candida tropicalis. This work aimed to use artificial urine (AU) and urinary catheters, under flow conditions, for the study of C. tropicalis biofilms. Adhesion and biofilm formation on silicone and latex urinary catheters was quantified by crystal violet staining and colony forming units determination. Candida surface hydrophobicity was also evaluated, as well as the biofilms’ matrix content in terms of proteins and carbohydrates. Candida tropicalis was able to adhere and to form biofilms in the entire length of the catheters under flow conditions. It was verified that the isolate U69 adhered significantly more to both types of catheters,than the reference strain. However, biofilms formed by that isolate contained significantly less cultivable cells and higher biofilm biomass than biofilms of the reference strain. Detachment of cells from biofilms on latex catheter was lower compared to silicone catheter. The model with AU showed to be suitable for studies mimicking the real body conditions. Additionally, C. tropicalis was in fact able to colonize urinary catheters in the presence of AU and to detach from these catheters, showing their capacity to colonize distal sites. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/25968 |
DOI: | 10.3109/13693786.2011.560619 |
ISSN: | 1369-3786 1460-2709 |
Arbitragem científica: | yes |
Acesso: | Acesso restrito UMinho |
Aparece nas coleções: | CEB - Publicações em Revistas/Séries Internacionais / Publications in International Journals/Series |
Ficheiros deste registo:
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pp.pdf Acesso restrito! | 761,37 kB | Adobe PDF | Ver/Abrir |