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从中国上海的 12 种水产品中分离得到的 的毒力、抗性和基因组指纹特征。

Virulence, Resistance, and Genomic Fingerprint Traits of Isolated from 12 Species of Aquatic Products in Shanghai, China.

机构信息

Key Laboratory of Quality and Safety Risk Assessment for Aquatic Products on Storage and Preservation (Shanghai), China Ministry of Agriculture, College of Food Science and Technology, Shanghai Ocean University, Shanghai, People's Republic of China.

National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, People's Republic of China.

出版信息

Microb Drug Resist. 2020 Dec;26(12):1526-1539. doi: 10.1089/mdr.2020.0269. Epub 2020 Nov 6.

Abstract

is a waterborne bacterium and can cause epidemic cholera disease worldwide. Continuous monitoring of contamination in aquatic products is imperative for assuring food safety. In this study, we determined virulence, antimicrobial susceptibility, heavy metal tolerance, and genomic fingerprints of 370 isolates recovered from 12 species of commonly consumed aquatic products collected from July to September of 2018 in Shanghai, China. Among the species, , , , and were for the first time detected for . Toxin genes , , , and were absent from all the isolates. However, high occurrence of virulence-associated genes was detected, such as (82.7%), (81.4%), (81.4%, 24.3%, 80.3%, and 80.8%, respectively), and (80.5%). Approximately 62.2% of the 370 isolates exhibited resistance to streptomycin, followed by ampicillin (60.3%), rifampicin (53.8%), trimethoprim (38.4%), and sulfamethoxazole-trimethoprim (37.0%). Moreover, ∼57.6% of the isolates showed multidrug resistant phenotypes with 57 resistance profiles, which was significantly different among the 12 species (multiple antimicrobial resistance index,  < 0.001). Meanwhile, high incidence of tolerance to heavy metals Hg (69.5%), Ni (32.4%), and Cd (30.8%) was observed among the isolates. The enterobacterial repetitive intergenic consensus-polymerase chain reaction (ERIC-PCR)-based fingerprinting profiles classified the 370 isolates into 239 different ERIC-genotypes, which demonstrated diverse genomic variation among the isolates. Overall, the results in this study meet the increasing need of food safety risk assessment of aquatic products.

摘要

是一种水生细菌,可在全球范围内引发流行性霍乱病。持续监测水产品污染对于确保食品安全至关重要。本研究从 2018 年 7 月至 9 月在中国上海采集的 12 种常见食用水产品中分离得到 370 株分离株,对其进行了毒力、抗菌药物敏感性、重金属耐受性和基因组指纹图谱分析。在所检测的物种中,首次在 、 、 、 中检测到 。所有分离株均未检测到毒素基因 、 、 。然而,检测到高频率的毒力相关基因,如 (82.7%)、 (81.4%)、 (81.4%、24.3%、80.3%和 80.8%)和 (80.5%)。大约 62.2%的 370 株分离株对链霉素表现出耐药性,其次是氨苄西林(60.3%)、利福平(53.8%)、甲氧苄啶(38.4%)和磺胺甲恶唑-甲氧苄啶(37.0%)。此外,约 57.6%的分离株表现出多药耐药表型,有 57 种耐药谱,在 12 种物种之间存在显著差异(多重抗菌药物耐药指数,  < 0.001)。同时,分离株对重金属 Hg(69.5%)、Ni(32.4%)和 Cd(30.8%)的耐受性较高。基于肠杆菌重复基因间一致性-聚合酶链反应(ERIC-PCR)的指纹图谱将 370 株分离株分为 239 种不同的 ERIC 基因型,表明分离株之间存在广泛的基因组变异。总的来说,本研究结果满足了对水产品食品安全风险评估的日益增长的需求。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/161e/7757592/c61717104f00/mdr.2020.0269_figure1.jpg

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