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    Título
    Distribution of Tetracycline Resistance Genes in Actinobacillus pleuropneumoniae Isolates from Spain
    Autor
    Blanco, Mónica
    Gutiérrez Martín, César BernardoAutoridad BuleriaORCID
    Rodríguez Ferri, Elías FernandoAutoridad BuleriaORCID
    Roberts, Marilyn C.
    Navas, Jesús
    Facultad/Centro
    Facultad de Veterinaria
    Área de conocimiento
    Sanidad Animal
    Datos de la obra
    Antimicrobial Agents and Chemotherapy, febrero 2006, vol. 50, n. 2
    Editor
    American Society for Microbiology
    Fecha
    2006-02-14
    Abstract
    Actinobacillus pleuropneumoniae is the etiological agent of porcine pleuropneumonia. Tetracycline is used for therapy of this disease, and A. pleuropneumoniae carrying the tet(B) gene, coding for an efflux protein that reduces the intercellular tetracycline level, has been described previously. Of the 46 tetracycline-resistant (Tcr) Spanish A. pleuropneumoniae isolates used in this study, 32 (70%) carried the tet(B) gene, and 30 of these genes were associated with plasmids. Eight (17%) isolates carried the tet(O) gene, two (4%) isolates carried either the tet(H) or the tet(L) gene, and all these genes were associated with plasmids. This is the first description of these tet genes in A. pleuropneumoniae. The last two Tcr isolates carried none of the tet genes examined. Except for tet(O)-containing plasmids, the other 34 Tcr plasmids were transformable into an Escherichia coli recipient. Two plasmids were completely sequenced. Plasmid p11745, carrying the tet(B) gene, was 5,486 bp and included a rep gene, encoding a replication-related protein, and two open reading frames (ORFs) with homology to mobilization genes of Neisseria gonorrhoeae plasmid pSJ7.4. Plasmid p9555, carrying the tet(L) gene, was 5,672 bp and, based on its G C content, consisted of two regions, one of putative gram-positive origin containing the tet(L) gene and the other comprising four ORFs organized in an operon-like structure with homology to mobilization genes in other plasmids of gram-negative bacteria
    Materia
    Sanidad animal
    Palabras clave
    Spain
    Tetracycline
    Actinobacillus pleuropneumoniae
    Peer review
    SI
    URI
    http://hdl.handle.net/10612/6451
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