2022
DOI: 10.1016/j.scitotenv.2022.155321
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Occurrence and transfer characteristics of blaCTX-M genes among Escherichia coli in anaerobic digestion systems treating swine waste

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Cited by 12 publications
(6 citation statements)
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“…The remaining 18 ST types, comprising 25 E. coli strains, were found to be associated with bla CTX-M-55 for the first time, with ST6707 being detected in 6 stains. Previous reports have indicated that regions with a high detection rate of bla CTX-M often exhibited ST10 and ST48 as the most prevalent types ( He et al, 2021 ; Tian et al, 2022 ). In our study, ST10 was the most common type, while only one E. coli strain was identified as ST48.…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…The remaining 18 ST types, comprising 25 E. coli strains, were found to be associated with bla CTX-M-55 for the first time, with ST6707 being detected in 6 stains. Previous reports have indicated that regions with a high detection rate of bla CTX-M often exhibited ST10 and ST48 as the most prevalent types ( He et al, 2021 ; Tian et al, 2022 ). In our study, ST10 was the most common type, while only one E. coli strain was identified as ST48.…”
Section: Resultsmentioning
confidence: 99%
“…Study shows that in 2019, cephalosporin-resistant Escherichia coli ( E. coli ) and Klebsiella pneumoniae resulted in tens of thousands of deaths ( Antimicrobial Resistance Collaborators, 2022 ). Meanwhile, the World Health Organization has classified third-generation cephalosporins as “highest-priority critically important antimicrobials” for human medicine ( Tian et al, 2022 ). Third-generation cephalosporins are widely used in food animals ( Hayer et al, 2022 ).…”
Section: Introductionmentioning
confidence: 99%
“…The resistance genes detected in the ESBL-EC isolates via PCR revealed that the CTX-M gene was the most prevalent β-lactam gene (23.3%; 7/30), which corresponds to the phenotypic resistance to the third and fourth generation cephalosporins. Usually, bla CTX-M genes are located on transferable plasmids, which could spread among animal, environmental and human E. coli isolates [ 31 ]. Regarding the genes associated with resistance to non-β-lactam antibiotics, tet A was the most prevalent gene in the ESBL-EC strains.…”
Section: Discussionmentioning
confidence: 99%
“…The abundance of ARGs in the biological treatment units could be reduced by >80%, and the biological wastewater treatment systems could be operated under stable conditions. In addition, hydrothermal treatment based on enhanced hydrolysis was also applied in Chinese full-scale plants for recycling waste erythromycin and cephalosporin fermentation residues (20). β Similarly, livestock waste is another major source of ARGs in the environment.…”
Section: Environmental Engineering Approaches and Practicesmentioning
confidence: 99%
“…Similarly, livestock waste is another major source of ARGs in the environment. Some prevalent high-risk ARGs in animal manure, such as CTX-M-type extended spectrum \begin{document}$\beta$\end{document} -lactamase genes ( bla CTX-M ), the ABC transporter gene conferring resistance to florfenicol and linezolid ( optrA ), and mobile tigecycline resistance gene [ tet (X) variants], were found to persist in animal manure, mesophilic anaerobic digestion and composting systems, and the related environment ( 21 - 23 ). Hyperthermophilic anaerobic treatment or composting could reduce the abundance of most high-risk ARGs and inactivate the fecal bacteria effectively, indicating that effective management of operating temperatures in anaerobic digestion or composting might be an effective way to prevent the discharge of the high-risk ARGs from animal manure treatment systems.…”
Section: Progress In the Containment Of Environmental Amr Developmentmentioning
confidence: 99%