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ABSTRACT: Full size-fractionated antibiotic resistome in wastewater treatment plants

PROVIDER: PRJNA639397 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR12011400_1.fastq.gz	Fastqsanger.gz
	SRR12011400_2.fastq.gz	Fastqsanger.gz
	SRR12011401_1.fastq.gz	Fastqsanger.gz
	SRR12011401_2.fastq.gz	Fastqsanger.gz
	SRR12011402_1.fastq.gz	Fastqsanger.gz

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Antibiotic Resistance Profile and Genomic Characteristics of Multidrug-Resistant Bacteria from the Sludge of a Pharmaceutical Wastewater Treatment Plant

Project description:Incomplete antibiotic removal in pharmaceutical wastewater treatment plants (PWWTPs) could lead to the development and spread of antibiotic-resistant bacteria (ARBs) and genes (ARGs) in the environment, posing a growing public health threat. In this study, two multiantibiotic-resistant bacteria, Ochrobactrum intermedium (N1) and Stenotrophomonas acidaminiphila (N2), were isolated from the sludge of a PWWTP in Guangzhou, China. The N1 strain was highly resistant to ampicillin, cefazolin, chloramphenicol, tetracycline, and norfloxacin, while the N2 strain exhibited high resistance to ampicillin, chloramphenicol, and cefazolin. Whole-genome sequencing revealed that N1 and N2 had genome sizes of 0.52 Mb and 0.37 Mb, respectively, and harbored 33 and 24 ARGs, respectively. The main resistance mechanism in the identified ARGs included efflux pumps, enzymatic degradation, and target bypass, with the N1 strain possessing more multidrug-resistant efflux pumps than the N2 strain (22 vs 12). This also accounts for the broader resistance spectrum of N1 than of N2 in antimicrobial susceptibility tests. Additionally, both genomes contain numerous mobile genetic elements (89 and 21 genes, respectively) and virulence factors (276 and 250 factors, respectively), suggesting their potential for horizontal transfer and pathogenicity. Overall, this research provides insights into the potential risks posed by ARBs in pharmaceutical wastewater and emphasizes the need for further studies on their impact and mitigation strategies.

2024-10-20 | E-MTAB-14497 | biostudies-arrayexpress

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