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产超广谱碳青霉烯酶高毒力.的分子流行病学

Molecular Epidemiology of Hypervirulent Carbapenemase-Producing .

机构信息

Department of Laboratory Medicine, Huashan Hospital, Fudan University, Shanghai, China.

Department of Intensive Care Unit, Huashan Hospital, Fudan University, Shanghai, China.

出版信息

Front Cell Infect Microbiol. 2021 Apr 7;11:661218. doi: 10.3389/fcimb.2021.661218. eCollection 2021.

DOI:10.3389/fcimb.2021.661218
PMID:33898334
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8058458/
Abstract

OBJECTIVE

To investigate the overall distributions of key virulence genes in , especially the hypervirulent -positive (Hv-(+)-KP).

METHODS

A total of 521 complete genomes of from GenBank were collected and analyzed. Multilocus sequence typing, molecular serotyping, antibiotic-resistance, virulence genes and plasmid replicon typing were investigated.

RESULTS

Positive rates of virulence genes highly varied, ranging from 2.9 () to 99.6% (). Totally 207 strains presented positive , , and and 190 showed positive , , , and , which were the two primary modes. A total of 94, 165 and 29 strains were denoted as hypervirulent (HvKP), (+)-KP and Hv-(+)-KP. ST11 accounted for 17 among the 29 Hv-(+)-KP strains; Genes , and were positive in 28, 26 and 18 Hv-(+)-KP strains respectively. Among the 29 Hv-(+)-KP strains exhibiting four super clusters from GenBank, IncHI1B plasmids carrying virulence genes and IncFII ones with were responsible for both 23 strains respectively.

CONCLUSIONS

Positive rates of virulence genes vary remarkably in . Genes , and were primary ones inducing Hv-(+)-KP. IncHI1B plasmids carrying virulence genes and IncFII ones with constitute the primary combination responsible for Hv-(+)-KP. The making of Hv-(+)-KP is mostly (+)-KP acquiring another plasmid harboring virulence genes.

摘要

目的

研究 中关键毒力基因的总体分布情况,尤其是高毒力 - 阳性(Hv-(+)-KP)。

方法

从 GenBank 中收集了 521 株完整的 基因组进行分析。对多位点序列分型、分子血清型、抗生素耐药性、毒力基因和质粒复制子类型进行了研究。

结果

毒力基因的阳性率差异很大,范围从 2.9()到 99.6()。共有 207 株呈阳性、、和,190 株呈阳性、、、和,这是两种主要模式。共有 94、165 和 29 株被定义为高毒力(HvKP)、(+)-KP 和 Hv-(+)-KP。在 29 株 Hv-(+)-KP 株中,ST11 占 17 株;28 株、26 株和 18 株 Hv-(+)-KP 株分别呈阳性。在来自 GenBank 的 29 株 Hv-(+)-KP 株中表现出四个超级聚类的菌株中,携带毒力基因的 IncHI1B 质粒和带有 的 IncFII 质粒分别负责 23 株。

结论

毒力基因在 中的阳性率差异很大。基因、和是诱导 Hv-(+)-KP 的主要因素。携带毒力基因的 IncHI1B 质粒和带有 的 IncFII 质粒构成了导致 Hv-(+)-KP 的主要组合。Hv-(+)-KP 的形成主要是(+)-KP 获得另一个携带毒力基因的质粒。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a793/8058458/5c4f862e9380/fcimb-11-661218-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a793/8058458/40d15b40f0b2/fcimb-11-661218-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a793/8058458/69edb895ce97/fcimb-11-661218-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a793/8058458/9887edd4e6a2/fcimb-11-661218-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a793/8058458/7821d3817373/fcimb-11-661218-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a793/8058458/2ea05871131a/fcimb-11-661218-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a793/8058458/36c4c5c4912a/fcimb-11-661218-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a793/8058458/95f2fc893604/fcimb-11-661218-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a793/8058458/5c4f862e9380/fcimb-11-661218-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a793/8058458/40d15b40f0b2/fcimb-11-661218-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a793/8058458/69edb895ce97/fcimb-11-661218-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a793/8058458/9887edd4e6a2/fcimb-11-661218-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a793/8058458/7821d3817373/fcimb-11-661218-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a793/8058458/2ea05871131a/fcimb-11-661218-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a793/8058458/36c4c5c4912a/fcimb-11-661218-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a793/8058458/95f2fc893604/fcimb-11-661218-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a793/8058458/5c4f862e9380/fcimb-11-661218-g008.jpg

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