RESUMEN
Urinary tract infections (UTI) are considered one of the most important diseases of sows due to its close relationship with reproductive problems such as reduced litter size, increase in the rate of return to estrous, vulvar discharge, abortion, mastitis and anestrus. Actinobaculum suis is one of the main agents involved in porcine urinary tract infection and is responsible for the most severe and fatal cases in sows. In the present report, 23 A. suis strains isolated from a sow and boars in Brazil were identified by PCR and further characterized by broth microdilution, molecular typing by pulsed-field gel electrophoresis (PFGE), single-enzyme amplified fragment length polymorphism (SE-AFLP), and whole-genome sequencing. All strains were sensitive to ceftiofur, linezolid, nitrofurantoin, quinupristin-dalfopristin and vancomycin. Ciprofloxacin, daptomycin, lincomycin, erythromycin and tylosin resistance was observed in 100% of tested strains. Tetracycline and tigecycline also presented high resistance rates (87% and 30.4%, respectively). PFGE with eight different restriction enzymes and three programs did not enable strain characterization; however, all strains were typed by SE-AFLP that clustered strains according to their origin, thus proving an effective tool for A. suis genotyping. Whole-genome sequencing and comparative analysis enabled species differentiation from closely related genus. This is the first report of genomic characterization of A. suis.
Asunto(s)
Actinomycetaceae/genética , Actinomycetaceae/aislamiento & purificación , Infecciones por Actinomycetales/veterinaria , Genotipo , Fenotipo , Enfermedades de los Porcinos/microbiología , Actinomycetaceae/clasificación , Actinomycetaceae/fisiología , Infecciones por Actinomycetales/microbiología , Análisis del Polimorfismo de Longitud de Fragmentos Amplificados , Animales , Antibacterianos/farmacología , Brasil , Farmacorresistencia Bacteriana , Electroforesis en Gel de Campo Pulsado , Genómica , Pruebas de Sensibilidad Microbiana , Tipificación Molecular , Reacción en Cadena de la Polimerasa , Porcinos , Secuenciación Completa del GenomaRESUMEN
Leptospira interrogans serovar Pomona is one of the most important serovars associated with worldwide porcine leptospirosis, and its infection is characterized by high antibody titers and the establishment of a renal carrier state. Here, we present the draft genome sequence of Leptospira interrogans serovar Pomona strain GR5 isolated from apparently healthy gilt in Brazil.