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秘鲁携带 和 基因的高风险 ST147 克隆的全基因组分析。

Whole-Genome Analysis of a High-Risk Clone of ST147 Carrying Both and Genes in Peru.

机构信息

Facultad de Farmacia y Bioquímica, Instituto de Investigaciones en Bacteriología y Virología Molecular (IBaViM), Universidad de Buenos Aires, Buenos Aires, Argentina.

Centro de Investigaciones Tecnológicas, Biomédicas y Medioambientales - CITBM, Universidad Nacional Mayor de San Marcos, Lima, Perú.

出版信息

Microb Drug Resist. 2022 Feb;28(2):171-179. doi: 10.1089/mdr.2021.0128. Epub 2021 Oct 25.

Abstract

The increasing prevalence and dissemination of carbapenemase-producing represent a serious concern for public health. We studied the genetic features of a multidrug-resistant isolate of high-risk clone ST147 coharboring -1 and recovered from a human clinical urine sample in 2017 in Peru. Whole-genome sequencing and conjugation assays identified and genes on two different conjugative plasmids, which belong to IncI2 and IncFIB/HI1B incompatibility groups, respectively. The presence of (in the studied isolate, located on the chromosome) and mutations in GyrA S83I and ParC S80I were detected, as expected for ST147. In addition, other β-lactamases ( and ) and PMQR ( and ) among several resistance determinants were identified. The coexistence not previously described of these genes in the same high-risk clone is a cause for serious concern that supports the need for implementation of genomic surveillance studies.

摘要

产碳青霉烯酶的不断增加和传播对公共卫生构成了严重威胁。我们研究了 2017 年在秘鲁从人类临床尿液样本中分离出的一株高风险克隆 ST147 型多药耐药株的遗传特征,该菌同时携带-1 和 。全基因组测序和接合试验鉴定出两个不同的接合质粒上的 和 基因,它们分别属于 IncI2 和 IncFIB/HI1B 不相容群。在研究的分离株中,发现了染色体上的 (位于染色体上)和 GyrA S83I 和 ParC S80I 的突变,这与 ST147 预期的情况相符。此外,还在几个耐药决定因素中发现了其他β-内酰胺酶(和)和 PMQR(和)。在同一高危克隆中同时存在这些以前未描述的基因,这令人严重关切,支持有必要开展基因组监测研究。

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