从阿根廷肠杆菌中回收的 blaNDM-5-harbouring 质粒的整体基因组描述。

IF 3.7 3区 医学 Q2 INFECTIOUS DISEASES Journal of global antimicrobial resistance Pub Date : 2024-10-28 DOI:10.1016/j.jgar.2024.10.258
González-Espinosa Francisco, Di Pilato Vincenzo, Calabrese Luca, Costa Elisa, Costa Agustina, Gutkind Gabriel, Cejas Daniela, Radice Marcela
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引用次数: 0

摘要

目的鉴定在阿根廷分离的肠杆菌中发现的四种与 blaNDM-5 相关的质粒:DNA由Illumina和牛津纳米孔技术测序,用Unicycler组装,用PlasmidFinder、MOB-Typer、IslandViewer4和Resfinder分析,用Proksee和Clinker可视化。结果:两个质粒属于不相容组IncFII,其中blaNDM-5位于先前描述的遗传背景中,浸没在抗菌药耐药性岛(ARI)中。本地 IncFII 质粒与 PLSDB 中的 4 个质粒具有高度相似性(共享哈希值(sh)≥ 90%)。另外两个本地质粒属于多复制子组 IncFIB-HI1B,以一种新的基因变异形式携带 blaNDM-5。这两个多复制子质粒都有两个ARI,其中一个含有blaNDM-5和其他ARM;第二个ARI含有blaCTX-M-15和一个1类整合子。存入 PLSDB 的质粒与本地多重复制质粒的相似度较低。最相似的质粒(n:5)的相似度低于 60%,显示出相同的 Inc 群,但缺乏 ARM:这项研究拓宽了人们对拉丁美洲 blaNDM-5 相关质粒的有限了解。此外,该研究首次描述了blaNDM-5在共同遗传平台中的新型变体及其在多重复制的IncFIB-IncHI1B质粒中的位置,而这些质粒以前未与任何抗菌药耐药性标记(ARM)相关联。
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Integral genomic description of blaNDM-5-harbouring plasmids recovered from Enterobacterales in Argentina.

Objective: To characterise four blaNDM-5-harbouring plasmids recovered in Enterobacterales isolated in Argentina.

Methods: DNA was sequenced by Illumina and Oxford Nanopore technologies, assembled using Unicycler, analysed using PlasmidFinder, MOB-Typer, IslandViewer4 and Resfinder, and visualised by Proksee and Clinker. blaNDM-5-harbouring plasmids were compared with deposited similar ones using PLSDB.

Results: two plasmids belonged to incompatibility group IncFII where blaNDM-5 was located in a previously described genetic context, immersed in an antimicrobial resistance island (ARI). Local IncFII plasmids displayed high similarity (≥ 90% shared hashes (sh)) with four deposited in PLSDB. The other two local plasmids belonged to the multi-replicon group IncFIB-HI1B, harbouring blaNDM-5 in a novel variant of the genetic context. Both multi-replicon plasmids, presented two ARI, one containing blaNDM-5 in addition to other ARM; and the second ARI carrying blaCTX-M-15 and a class 1 integron. Plasmids deposited in PLSDB showed low similarity to local multi-replicon plasmids. The most similar plasmids (n:5) displayed less than 60% sh showing the same Inc groups but lacking ARM.

Conclusion: This study broadens the limited understanding of blaNDM-5-harbouring plasmids in Latin America. Furthermore, it represents the first description of blaNDM-5 in a novel variant of the common genetic platform and its location in multi-replicon IncFIB-IncHI1B plasmids, which were not previously associated with any antimicrobial resistance marker (ARM).

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来源期刊
Journal of global antimicrobial resistance
Journal of global antimicrobial resistance INFECTIOUS DISEASES-PHARMACOLOGY & PHARMACY
CiteScore
8.70
自引率
2.20%
发文量
285
审稿时长
34 weeks
期刊介绍: The Journal of Global Antimicrobial Resistance (JGAR) is a quarterly online journal run by an international Editorial Board that focuses on the global spread of antibiotic-resistant microbes. JGAR is a dedicated journal for all professionals working in research, health care, the environment and animal infection control, aiming to track the resistance threat worldwide and provides a single voice devoted to antimicrobial resistance (AMR). Featuring peer-reviewed and up to date research articles, reviews, short notes and hot topics JGAR covers the key topics related to antibacterial, antiviral, antifungal and antiparasitic resistance.
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