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| Content Provider | frontiers |
|---|---|
| Author | Khan, Faisal Ahmad Söderquist, Bo Jass, Jana |
| Abstract | Antibiotic-resistant Enterobacteriaceae and non-lactose fermenting Gram-negative bacteria are a major cause of nosocomial infections. Antibiotic misuse has fueled the worldwide spread of resistant bacteria and the genes responsible for antibiotic resistance (ARGs). There is evidence that ARGs are ubiquitous in non-clinical environments, especially those affected by anthropogenic activity. However, the emergence and primary sources of ARGs in the environment of countries with strict regulations for antibiotics usage are not fully explored. The aim of the present study was to evaluate the repertoire of ARGs of culturable Gram-negative bacteria from directionally connected sites from the hospital to the wastewater treatment plant (WWTP), and downstream aquatic environments in central Sweden. The antibiotic resistance genes were detected from genomic DNA isolated from a population of selectively cultured coliform and Gram-negative bacteria using qPCR. The results show that hospital wastewater is a reservoir of several class B β-lactamase genes such as blaIMP-1, blaIMP-2, and blaOXA-23, however, most of these genes were not observed in downstream locations. Moreover, β-lactamase genes such as blaOXA-48, blaCTX-M-8 and blaSFC-1, blaVIM-1 and blaVIM-13 were detected in downstream river water but not in the WWTP. The results indicate that the WWTP and hospital wastewaters are reservoirs of most ARGs and contribute to the diversity of ARGs in associated natural environments. However, this study suggests that other factors may also have minor contributions to the prevalence and diversity of ARGs in natural environments. |
| ISSN | 1664302X |
| DOI | 10.3389/fmicb.2019.00688 |
| Volume Number | 10 |
| Journal | Frontiers in Microbiology |
| Language | English |
| Publisher Date | 2019-04-04 |
| Access Restriction | Open |
| Subject Keyword | Antimicrobial resistance gene (ARG) co-occurrence VIM-1 Enterobacteriaceae Surface water Carbapenemase Urban wastewater ESBL - Extended-spectrum beta-lactamase |
| Content Type | Text |
| Resource Type | Article |
| Subject | Microbiology Microbiology (medical) |
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