ArticleBrazilian journal of microbiology : [publication of the Brazilian Society for Microbiology]
Characterization of the variable region in the class 1 integron of antimicrobial-resistant Escherichia coli isolated from surface water.
Article in Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology]. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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16 citing papers in PubMed, 43 citations in OpenAlex.
- Occurrence of antimicrobial resistance, integrons and virulence genes in Escherichia coli isolated from drinking water in Van, Turkiye: a cross-sectional study.BMC microbiology · 2025Article
- Prevalence of Antibiotic Resistance Determinants in Carbapenem-ResistantInternational journal of molecular and cellular medicine · 2025Article
- Prevalence of blaBMC infectious diseases · 2024Article
- Detecting Class 1 Integrons and Their Variable Regions inAntibiotics (Basel, Switzerland) · 2024Article
- Gut Colonization by ESBL-Producing Escherichia coli in Dogs Is Associated with a Distinct Microbiome and Resistome Composition.Microbiology spectrum · 2023Article
- Distribution pattern of antibiotic resistance genes inVeterinary world · 2023Article
- Profile of Bacterial Community and Antibiotic Resistance Genes in Typical Vegetable Greenhouse Soil.International journal of environmental research and public health · 2022Article
- Occurrence of Pharmaceuticals and Endocrine Disrupting Compounds in Brazilian Water and the Risks They May Represent to Human Health.International journal of environmental research and public health · 2021Article
- Characterization of Integrons and Quinolone Resistance in ClinicalInternational journal of microbiology · 2021Article
- Antibiotic resistance inVeterinary world · 2020Review
- Removal of antibiotic resistance genes in an algal-based wastewater treatment system employing Galdieria sulphuraria: A comparative study.The Science of the total environment · 2020Article
- Dissemination of Multidrug-Resistant CommensalFrontiers in microbiology · 2019Article
- Genetic Environment ofFrontiers in microbiology · 2018Article
- Article
- Serotyping, antibiotic susceptibility, and virulence genes screening ofVeterinary world · 2017Article
- Antimicrobial resistance and integron gene cassette arrays in commensal Escherichia coli from human and animal sources in IRI.Gut pathogens · 2016Article
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Fecal bacteria are considered to be a potential reservoir of antimicrobial resistance genes in the aquatic environment and could horizontally transfer these genes to autochthonous bacteria when carried on transferable and/or mobile genetic elements. Such circulation of resistance genes constitutes a latent public health hazard. The aim of this study was to characterize the variable region of the class 1 integron and relate its genetic content to resistance patterns observed in antimicrobial-resistant Escherichia coli isolated from the surface waters of Patos Lagoon, Southern Brazil. Genetic diversity of the isolates and presence of the qacEΔ1 gene, which confers resistance to quaternary ammonium compounds, were also investigated. A total of 27 isolates were analyzed. The variable region harbored dfrA17, dfrA1 and dfrA12 genes, which confer resistance to trimethoprim, and aadA1, aadA5 and aadA22 genes that encode resistance to streptomycin/spectinomycin. Most of the isolates were considered resistant to quaternary ammonium compounds and all of them carried the qacEΔ1 gene at the 3' conserved segment of the integron. ERIC-PCR analyses of E. coli isolates that presented the integrons showed great genetic diversity, indicating diverse sources of contamination in this environment. These results suggest that fecal bacteria with class 1 integrons in aquatic environments are potentially important reservoirs of antibiotic-resistance genes and may transfer these elements to other bacteria that are capable of infecting humans.
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