Genotype diversity and antibiotic resistance risk in Aeromonas hydrophila in Sichuan, China

Sichuan is a significant aquaculture province in China, with a total aquaculture output of 1.72 × 10 6 tons in 2022. One of the most significant microorganisms hurting the Sichuan aquaculture is Aeromonas hydrophila , whose genotype and antibiotic resistance are yet unknown. This study isolated a to...

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Veröffentlicht in:Brazilian journal of microbiology 2024-03, Vol.55 (1), p.901-910
Hauptverfasser: Peng, Kun, Chen, Mengzhu, Wang, Yilin, Tian, Ziqi, Deng, Longjun, Li, Tiancai, Feng, Yang, Ouyang, Ping, Huang, Xiaoli, Chen, Defang, Geng, Yi
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container_issue 1
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container_title Brazilian journal of microbiology
container_volume 55
creator Peng, Kun
Chen, Mengzhu
Wang, Yilin
Tian, Ziqi
Deng, Longjun
Li, Tiancai
Feng, Yang
Ouyang, Ping
Huang, Xiaoli
Chen, Defang
Geng, Yi
description Sichuan is a significant aquaculture province in China, with a total aquaculture output of 1.72 × 10 6 tons in 2022. One of the most significant microorganisms hurting the Sichuan aquaculture is Aeromonas hydrophila , whose genotype and antibiotic resistance are yet unknown. This study isolated a total of 64 strains of A. hydrophila from various regions during September 2019 to June 2021 within Sichuan province, China. The technique of Multi-Locus Sequence Typing (MLST) was used for the purpose of molecular typing. Meanwhile, identification of antibiotic resistance phenotype and antibiotic resistance gene was performed. The findings of the study revealed that 64 isolates exhibited 29 sequence types (ST) throughout different regions in Sichuan, with 25 of these ST types being newly identified. Notably, the ST251 emerged as the predominant sequence type responsible for the pandemic. The resistance rate of isolated strains to roxithromycin was as high as 98.3%, followed by co-trimoxazole (87.5%), sulfafurazole (87.5%), imipenem (80%), amoxicillin (60%), and clindamycin (57.8%). Fifteen strains of A. hydrophila exhibited resistance to medicines across a minimum of three categories, suggesting the development of multidrug resistance in these isolates. A total of 63 ARGs were detected from the isolates, which mediated a range of antibiotic resistance mechanisms, with deactivation and efflux potentially serving as the primary mechanisms of antibiotic resistance. This study revealed the diversity of A. hydrophila genotypes and the risk of antibiotic resistance in Sichuan, providing reference for scientific and effective control of A. hydrophila infection.
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subjects Aeromonas - genetics
Aeromonas hydrophila
Aeromonas hydrophila - genetics
Amoxicillin
Anti-Bacterial Agents - pharmacology
Antibiotic resistance
Antibiotics
Aquaculture
Biomedical and Life Sciences
China
Clindamycin
Cotrimoxazole
Drug resistance
Drug Resistance, Microbial
Efflux
Food Microbiology
Genotype
Genotypes
Imipenem
Life Sciences
Medical Microbiology
Microbial Ecology
Microbial Genetics and Genomics
Microbiology
Microorganisms
Multidrug resistance
Multilocus Sequence Typing
Mycology
Phenotype
Phenotypes
Roxithromycin
Strains (organisms)
Sulfisoxazole
Veterinary Microbiology - Research Paper
title Genotype diversity and antibiotic resistance risk in Aeromonas hydrophila in Sichuan, China
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