Plasmid-mediated quinolone resistance in Aeromonas allosaccharophila recovered from a Swiss lake
Objectives: To search for plasmid-mediated qnr genes among waterborne environmental Aeromonas spp. recovered from Switzerland.Methods: Isolates presenting MICs of nalidixic acid or ciprofloxacin >= 1 mg/L were screened for qnr genes by a multiplex PCR approach followed by sequencing. Plasmids wer...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2008 |
| País: | Brasil |
| Institución: | Universidade Federal de São Paulo (UNIFESP) |
| Repositorio: | Repositório Institucional da UNIFESP |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.unifesp.br:11600/30979 |
| Acceso en línea: | http://dx.doi.org/10.1093/jac/dkn341 http://repositorio.unifesp.br/handle/11600/30979 |
| Access Level: | acceso abierto |
| Palabra clave: | A. allosaccharophila QnrS2 environment |
| Sumario: | Objectives: To search for plasmid-mediated qnr genes among waterborne environmental Aeromonas spp. recovered from Switzerland.Methods: Isolates presenting MICs of nalidixic acid or ciprofloxacin >= 1 mg/L were screened for qnr genes by a multiplex PCR approach followed by sequencing. Plasmids were transferred by transformation, and further analysis of the genetic structures surrounding the qnrS2 gene was carried out by PCR and sequencing.Results: A qnrS2 gene was identified from a single Aeromonas allosaccharophila isolate (Lugano lake, Lugano), as part of a mobile insertion cassette located on a broad host range IncU-type plasmid. This plasmid co-harboured a class 1 integron containing the aac(6 ')-Ib-cr, bla(OXA-1), catB3 and arr-3 gene cassettes.Conclusions: These findings strengthen further the role of Aeromonas spp. as a reservoir of antimicrobial resistance determinants in the environment. |
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