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Antimicrobial susceptibility profiles of multidrug-resistant aeromonads isolated from Northern Portugal freshwater ecosystem

2021Conference object Open access
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dc.contributor.authorVarandas, Simone
dc.contributor.authorFernandes, Conceição
dc.contributor.authorGomes, Sónia
dc.contributor.authorMonteiro, Sandra Mariza
dc.contributor.authorCabecinha, Edna
dc.contributor.authorTeixeira, Amílcar
dc.contributor.authorSaavedra, Maria José
dc.date.accessioned2022-10-17T15:18:18Z
dc.date.available2022-10-17T15:18:18Z
dc.date.issued2021
dc.description.abstractThe inappropriate use of antibiotics, one of the causes of the high incidence of antimicrobial-resistant bacteria isolated from aquatic ecosystems, represents a risk for aquatic organisms and the welfare of humans. This study aimed to determine the antimicrobial resistance rates among riverine Aeromonas, taken as representative of autochthonous microbiota, to evaluate the level of antibacterial resistance in the Tua River (Douro basin). The prevalence and degree of antibiotic resistance were examined using motile aeromonads as a potential indicator of antimicrobial susceptibility for the aquatic environment. Water samples were collected from the middle sector of the river, which is impacted by several anthropogenic pressures. Water samples were plated on an Aeromonas-selective agar, with and without antibiotics. The activity of 19 antibiotics was studied against 30 isolates of Aeromonas spp. using the standard agar dilution susceptibility test. Antibiotic resistance rates were fosfomycin (FOS) 83.33%, nalidixic acid (NA) 60%, cefotaxime (CTX) 40%, gentamicin (CN) 26.67%, tobramycin (TOB) 26.67%, cotrimoxazole (SXT) 26.67%, chloramphenicol (C) 16.67%, and tetracycline (TE) 13.33%. Some of the nalidixic acid-resistant strains were susceptible to fluoroquinolones. Multiple resistance was also observed (83.33%). The environmental ubiquity, the natural susceptibility to antimicrobials and the zoonotic potential of Aeromonas spp. make them optimal candidates for studying antimicrobial resistance in aquatic ecosystems. Aquatic environments may provide an ideal setting for the acquisition and dissemination of antibiotic resistance because anthropogenic activities frequently impact them. The potential risk of multi- and pan-resistant bacteria transmission between animals and humans should be considered in a “One Health-One World” concept.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationVarandas, Simone; Fernandes, Conceição; Gomes, Sónia; Monteiro, Sandra Mariza; Cabecinha, Edna; Teixeira, Amílcar; Saavedra, Maria José (2021). Antimicrobial susceptibility profiles of multidrug-resistant aeromonads isolated from Northern Portugal freshwater ecosystem. In SEFS12- Symposium for European Freshwater Sciences: Book of abstracts. Onlinept_PT
dc.identifier.urihttp://hdl.handle.net/10198/26024
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherIrish Freshwater Sciences Associationpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectMultidrug-resistant aeromonadspt_PT
dc.titleAntimicrobial susceptibility profiles of multidrug-resistant aeromonads isolated from Northern Portugal freshwater ecosystempt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceOnlinept_PT
oaire.citation.endPage449pt_PT
oaire.citation.startPage449pt_PT
oaire.citation.titleSEFS12- Symposium for European Freshwater Sciences: Book of abstractspt_PT
person.familyNameFernandes
person.familyNameTeixeira
person.givenNameConceição
person.givenNameAmilcar
person.identifier15483
person.identifier2153193
person.identifier.ciencia-id6514-3D41-4534
person.identifier.ciencia-id9510-3CF3-0393
person.identifier.orcid0000-0003-2873-501X
person.identifier.orcid0000-0001-5336-1174
person.identifier.scopus-author-id23018336600
person.identifier.scopus-author-id7202385393
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
relation.isAuthorOfPublicationd9c26c54-5e10-4ccb-b7f7-528af9eb9950
relation.isAuthorOfPublication4f0753fd-4b4f-46f6-8e2f-20c7f835a32a
relation.isAuthorOfPublication.latestForDiscovery4f0753fd-4b4f-46f6-8e2f-20c7f835a32a

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