ArticleScientific reports2024
Characterization of antibiotic resistance genes and mobile genetic elements in Escherichia coli isolated from captive black bears.
Article in Scientific reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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7 citing papers in PubMed, 6 citations in OpenAlex.
- Recombination, mobile genetic elements, and genetic transfer contribute to the adaptation of Streptococcus uberis causing mastitis.Veterinary research · 2026Article
- Intersite differences in gut microbiome are associated with habitat quality in a limestone forest-dwelling langur.BMC microbiology · 2026Article
- High prevalence of class 1 integron, biofilm formation, and antimicrobial resistance profiles of Escherichia coli isolated from cattle, water, and soil in Bangladesh.BMC microbiology · 2026Article
- Antimicrobial Resistance: Enzymes, Proteins, and Computational Resources.Current pharmaceutical design · 2026Review
- ESBL-ProducingVeterinary sciences · 2025Article
- Diversity of mobile genetic elements in carbapenem-resistant Enterobacterales isolated from the intensive care units of a tertiary care hospital in Northeast India.Frontiers in microbiology · 2025Article
- Genotypic Antimicrobial Resistance Profiles of DiarrheagenicInfection and drug resistance · 2024Article
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Authors and funding
16 authors at 3 institutions in 1 country.
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Abstract
The objective of this study was to analyze the antimicrobial resistance (AMR) characteristics produced by antibiotic resistance genes (ARGs), mobile genetic elements (MGEs) and gene cassettes in Escherichia coli isolated from the feces of captive black bears. Antimicrobial susceptibility testing was performed by using the disk diffusion method, and both MGEs and integron gene cassettes were detected by polymerase chain reaction. Our results showed that 43.7% (62/142) of the isolates were multidrug resistant strains and 97.9% (139/142) of the isolates were resistant to at least one antibiotic. The highest AMR phenotype was observed for tetracycline (79.6%, 113/142), followed by ampicillin (50.0%, 71/142), trimethoprim-sulfamethoxazole (43.7%, 62/142) and cefotaxime (35.9%, 51/142). However, all isolates were susceptible to tobramycin. tetA had the highest occurrence in 6 ARGs in 142 E. coli isolates (76.8%, 109/142). Ten mobile genetic elements were observed and IS26 was dominant (88.0%, 125/142). ISECP1 was positively associated with five β-lactam antibiotics. ISCR3/14, IS1133 and intI3 were not detected. Seventy-five E. coli isolates (65 intI1-positive isolates, 2 intI2-positive isolates and 8 intI1 + intI2-positive isolates) carried integrons. Five gene cassettes (dfrA1, aadA2, dfrA17-aadA5, aadA2-dfrA12 and dfrA1-aadA1) were identified in the intI1-positive isolates and 2 gene cassettes (dfrA1-catB2-sat2-aadA1 and dfrA1-catB2-sat1-aadA1) were observed in the intI2-positive isolates. Monitoring of ARGs, MGEs and gene cassettes is important to understand the prevalence of AMR, which may help to introduce measures to prevent and control of AMR in E. coli for captive black bears.
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