Distribution of oxytetracycline resistance genes in E. coli isolated from pigeon faecal samples |
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| Institution: | 1. Department of Veterinary Pathology, São Paulo State University (UNESP), Jaboticabal, São Paulo, Brazil;2. Department of Genetics, Evolution and Bioagents, Institute of Biology, University of Campinas (UNICAMP), Campinas, São Paulo, Brazil;3. Biological Institute, Advanced Center for Technological Research of Poultry Agribusiness, Bastos, São Paulo, Brazil;4. Department of Veterinary and Biomedical Sciences, Pennsylvania State University, University Park, Pennsylvania, USA;1. Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Oklahoma State University, Stillwater, OK 74078, USA;2. Oklahoma Animal Disease Diagnostic Laboratory, College of Veterinary Medicine, Oklahoma State University, Stillwater, OK 74078, USA;1. Department of Comparative Biomedical Sciences, Baton Rouge, LA, USA;2. Department of Veterinary Clinical Sciences, School of Veterinary Medicine, Baton Rouge, LA, USA;3. Department of Pathobiological Sciences, Louisiana State University, Baton Rouge, LA, USA;1. Clinic for Birds and Reptiles, Faculty of Veterinary Medicine, University of Leipzig, Leipzig, Germany;2. Department of Equine and Small Animal Medicine, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland;3. 4Pharma Ltd, Helsinki, Finland;4. Pharmacology, Faculty of Medicine, University of Helsinki, Helsinki, Finland;5. Education and Training Unit, Comparative Medicine, Karolinska Institute, Stockholm, Sweden |
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| Abstract: | Tetracycline- resistant bacteria have emerged due to the selective pressure of antimicrobial use. The aim of this study was to determine the prevalence of oxytetracycline resistance of Escherichia coli from pigeon faecal samples. All strains were examined for the presence and types of oxytetracycline resistance determinants using disc diffusion and polymerase chain reaction methods. Of 50 faecal E. coli isolates, 30 (60%) were resistant to oxytetracycline. Polymerase chain reaction analyses indicated that the most common genes found in these isolates were tetB (43.3%) and tetA (30%). Only 10% and 3.3% of the isolates contained otrA and otrB, respectively. In conclusion, our findings suggest that oxytetracycline-resistant strains of E. coli are disseminated in pigeons. |
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