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Characterization of quinolone resistance in Salmonella spp. isolates from food products and human samples in Brazil

Pribul, Bruno Rocha; Festivo, Marcia Lima; Souza, Miliane Moreira Soares de; Rodrigues, Dalia dos Prazeres.
Braz. J. Microbiol.; 47(1): 196-201, 2016. tab
Artigo em Inglês | VETINDEX | ID: vti-688338


Non-typhoidal salmonellosis is an important zoonotic disease caused by Salmonella enterica. The aim of this study was to investigate the prevalence of plasmid-mediated quinolone resistance in Salmonella spp. and its association with fluoroquinolone susceptibility in Brazil. A total of 129 NTS isolates (samples from human origin, food from animal origin, environmental, and animal) grouped as from animal (n = 62) and human (n = 67) food were evaluated between 2009 and 2013. These isolates were investigated through serotyping, antimicrobial susceptibility testing, and the presence of plasmid-mediated quinolone resistance (PMQR) genes (qnr, aac(6')-Ib) and associated integron genes (integrase, and conserved integron region). Resistance to quinolones and/or fluoroquinolones, from first to third generations, was observed. Fifteen isolates were positive for the presence of qnr genes (8 qnrS, 6 qnrB, and 1 qnrD) and twenty three of aac(6')-Ib. The conserved integron region was detected in 67 isolates as variable regions, from ±600 to >1000 pb. The spread of NTS involving PMQR carriers is of serious concern and should be carefully monitored. (AU)
Biblioteca responsável: BR68.1
Localização: BR68.1