Interaction between atypical microorganisms and E. coli in catheter-associated urinary tract biofilms

• Tipo: Artigo em Revista Científica Internacional
• Data: 2014

Autores

Andreia S. Azevedo (Autor) Outra; Carina Almeida (Autor) Outra; Luís F. Melo (Autor) FEUP; Nuno F. Azevedo (Autor) FEUP

Revista

Título: Biofouling

Vol. 30 Nº 8

Páginas: 893-902

ISSN: 0892-7014

Editora: Taylor & Francis

Indexação

ISI Web of Knowledge - 16 Citações

ISI Web of Science

Scopus - 18 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Ciências biológicas

Projetos Associados

DNA mimics - Desenvolvimento e aplicação de mímicos de DNA para a rápida identificação de microrganismos patogénicos

Outras Informações

ID Authenticus: P-009-WNA

DOI: 10.1080/08927014.2014.944173

Abstract (EN): Most biofilms involved in catheter-associated urinary tract infections (CAUTIs) are polymicrobial, with disease causing (eg Escherichia coli) and atypical microorganisms (eg Delftia tsuruhatensis) frequently inhabiting the same catheter. Nevertheless, there is a lack of knowledge about the role of atypical microorganisms. Here, single and dual-species biofilms consisting of E. coli and atypical bacteria (D. tsuruhatensis and Achromobacter xylosoxidans), were evaluated. All species were good biofilm producers (Log 5.84-7.25 CFU cm(-2) at 192 h) in artificial urine. The ability of atypical species to form a biofilm appeared to be hampered by the presence of E. coli. Additionally, when E. coli was added to a pre-formed biofilm of the atypical species, it seemed to take advantage of the first colonizers to accelerate adhesion, even when added at lower concentrations. The results suggest a greater ability of E. coli to form biofilms in conditions mimicking the CAUTIs, whatever the pre-existing microbiota and the inoculum concentration.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 10