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Biofilm formation at the solid-liquid and air-liquid interfaces by Acinetobacter species


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dc.creator Martí, Sara
dc.creator Rodríguez-Baño, Jesús
dc.creator Catel-Ferreira, Manuella
dc.creator Jouenne, Thierry
dc.creator Vila, Jordi
dc.creator Seifert, Harald
dc.creator Dé, Emmanuelle 2016-02-18T15:12:31Z 2016-02-18T15:12:31Z 2011
dc.identifier.issn 1756-0500 es
dc.description.abstract Abstract Background: The members of the genus Acinetobacter are Gram-negative cocobacilli that are frequently found in the environment but also in the hospital setting where they have been associated with outbreaks of nosocomial infections. Among them, Acinetobacter baumannii has emerged as the most common pathogenic species involved in hospital-acquired infections. One reason for this emergence may be its persistence in the hospital wards, in particular in the intensive care unit; this persistence could be partially explained by the capacity of these microorganisms to form biofilm. Therefore, our main objective was to study the prevalence of the two main types of biofilm formed by the most relevant Acinetobacter species, comparing biofilm formation between the different species. Findings: Biofilm formation at the air-liquid and solid-liquid interfaces was investigated in different Acinetobacter spp. and it appeared to be generally more important at 25°C than at 37°C. The biofilm formation at the solid-liquid interface by the members of the ACB-complex was at least 3 times higher than the other species (80-91% versus 5-24%). In addition, only the isolates belonging to this complex were able to form biofilm at the air-liquid interface; between 9% and 36% of the tested isolates formed this type of pellicle. Finally, within the ACB-complex, the biofilm formed at the air-liquid interface was almost 4 times higher for A. baumannii and Acinetobacter G13TU than for Acinetobacter G3 (36%, 27% & 9% respectively). Conclusions: Overall, this study has shown the capacity of the Acinetobacter spp to form two different types of biofilm: solid-liquid and air-liquid interfaces. This ability was generally higher at 25°C which might contribute to their persistence in the inanimate hospital environment. Our work has also demonstrated for the first time the ability of the members of the ACB-complex to form biofilm at the air-liquid interface, a feature that was not observed in other Acinetobacter species. es
dc.format application/pdf es
dc.language.iso eng es
dc.publisher BioMed Central es
dc.relation.ispartof Biomed Central Research Notes, 4(5), 1-4 es
dc.rights Attribution-NonCommercial-NoDerivatives 4.0 Internacional *
dc.rights.uri *
dc.subject Acinetobacter es
dc.subject Hospital-acquired infections es
dc.subject Biofilm es
dc.title Biofilm formation at the solid-liquid and air-liquid interfaces by Acinetobacter species es
dc.type info:eu-repo/semantics/article es
dc.type.version info:eu-repo/semantics/publishedVersion es
dc.rights.accessrights info:eu-repo/semantics/openAccess es
dc.contributor.affiliation Universidad de Sevilla. Departamento de Medicina es
dc.relation.publisherversion es
dc.identifier.doi 10.1186/1756-0500-4-5
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