Environmental biofilms, consequences for health and disease

Morgado, Patrícia I.; Reis, Lucia; Matias, Rui; Grossinho, Jose; Rebelo, Helena; Rodrigues, Joao; Jordao, Luisa

Publication

Environmental biofilms, consequences for health and disease

2017-09Conference object

dc.contributor.author	Morgado, Patrícia I.
dc.contributor.author	Reis, Lucia
dc.contributor.author	Matias, Rui
dc.contributor.author	Grossinho, Jose
dc.contributor.author	Rebelo, Helena
dc.contributor.author	Rodrigues, Joao
dc.contributor.author	Jordao, Luisa
dc.date.accessioned	2018-02-14T16:29:51Z
dc.date.available	2018-02-14T16:29:51Z
dc.date.issued	2017-09
dc.description.abstract	Ornamental waters of easy access and populated with animals are quite attractive and can hide threats to human health. Here we evaluated, during one year, the microbiota of ornamental waters in a Lisbon park in order to assess the risk for human health. A total of 26 different bacterial species were identified during the study. Among these are potential human pathogens such as Aeromonas, E. coli, K. pneumoniae, Pseudomonas and Raoutella. Aeromonas sobria is a resident bacterium whereas other species such as A. hydrophila and A. veronii were sporadically identified. A possible explanation for this result is the presence of a fish population. The presence of E. coli indicates water contamination with fecal materials. We first isolate this bacterium in June when the water temperature increased and then after it was a resident despite the natural temperature drop in the autumn. This might be explained by the replace of the fish population by ducks in October which lead to an increase in water tubirdity and total carbon content. Pseudomonas fluorescens, P. putida and P. oryzihabitans have been considered low-virulence bacteria but recently have been identified as ethiological agents of healthcare assotiated infections (HAI) mostly in immunosupressed individuals. Another recognized HAI agent present is K. pneumoniae. The same bacteria species were isolated from biofilm and water suggesting the existence of an equilibrium between planktonic and biofilm organized bacteria. The role played by biofilm assembly on the emergence of antibiotic resistance is still ongoing for the isolated bacteria, as well as the possible interaction between water chemical composition and bacteria isolates. Potential pathogens (biofilm or planktonic) represent a significant cause of acute bacterial infections mainly in specific populations (paediatric and geriatric). These results support a periodic control of ornamental water microbiota as simple preventive measure to avoid potential health issues.	pt_PT
dc.description.version	info:eu-repo/semantics/publishedVersion	pt_PT
dc.identifier.uri	http://hdl.handle.net/10400.18/4957
dc.language.iso	eng	pt_PT
dc.peerreviewed	yes	pt_PT
dc.rights.uri	http://creativecommons.org/licenses/by-nc/4.0/	pt_PT
dc.subject	Biofilms	pt_PT
dc.subject	Ornamental Waters	pt_PT
dc.subject	Bacterial Infections	pt_PT
dc.subject	Biofilmes	pt_PT
dc.subject	Águas Ornamentais	pt_PT
dc.subject	Saude Publica	pt_PT
dc.subject	Agentes Microbianos e Ambiente
dc.title	Environmental biofilms, consequences for health and disease	pt_PT
dc.type	conference object
dspace.entity.type	Publication
oaire.citation.conferencePlace	Amsterdão, The Netherlands	pt_PT
oaire.citation.title	5th Eurobiofilms congress, 19-22 September 2017	pt_PT
rcaap.rights	openAccess	pt_PT
rcaap.type	conferenceObject	pt_PT