Epidemiology of bla CTX-M-Positive Salmonella Typhimurium From Diarrhoeal Outpatients in Guangdong, China, 2010-2017
Copyright © 2022 Jiang, Ke, Wu, Wang, Fang, Sun, Wang, Lei, Shao and Liao..
Salmonella enterica can lead to intestinal diarrhea, and the emergence and spread of cephalosporin-resistant Salmonella have brought great challenges to clinical treatment. Therefore, this study investigated the prevalence and transmission of bla CTX-M genes among S. Typhimurium from diarrhoeal outpatients in Guangdong, China, from 2010 to 2017. A total of 221 bla CTX-M-positive isolates were recovered from 1,263 S. Typhimurium isolates from the facal samples of diarrhoea patients in 45 general hospitals from 11 cities. The most popular CTX-M gene was bla CTX-M-55 (39.6%, 72/182) in the CTX-M-1 group, followed by bla CTX-M-14 (22.5%, 41/182) and bla CTX-M-65 (19.2%, 35/182) in the CTX-M-9 group. The isolates that carried bla CTX-M-9G had significantly higher resistance rates to multiple antibacterials compared with bla CTX-M-1G (p < 0.01). Meanwhile, PFGE analysis not only showed the clonal transmission of bla CTX-M-55/14/65-positve isolates of diarrhoeal outpatients' origins from different hospitals in Guangdong province, but also the characteristic of bla CTX-M-55/14/65-positve isolates' bacterial persistence. Multilocus sequence typing (MLST) analysis indicated that these S. Typhimurium isolates possessed ST34 and ST19. Furthermore, genomic Beast phylogenomic analysis provided the evidence of a close relationship of bla CTX-M-positive S. Typhimurium isolates between the outpatients and pork. Most bla CTX-M-55/14/65 genes were transmitted by non-typeable or IncI1/IncFII/IncHI2 plasmids with the size of ranging from ~80 to ~280 kb. Moreover, whole-genome sequencing (WGS) analysis further revealed that bla CTX-M-55/14/65 coexisted with other 25 types of ARGs, of which 11 ARGs were highly prevalent with the detection rates >50%, and it first reported the emergence of bla TEM-141 in S. Typhimurium. This study underscores the importance of surveillance for bla CTX-M-positive microbes in diarrhea patients.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2022 |
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| Erschienen: |
2022 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:13 |
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| Enthalten in: |
Frontiers in microbiology - 13(2022) vom: 27., Seite 865254 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Jiang, Qi [VerfasserIn] |
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| Links: |
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| Themen: |
Bacterial persistence |
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| Anmerkungen: |
Date Revised 16.07.2022 published: Electronic-eCollection Citation Status PubMed-not-MEDLINE |
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| doi: |
10.3389/fmicb.2022.865254 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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NLM343041693 |
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| 245 | 1 | 0 | |a Epidemiology of bla CTX-M-Positive Salmonella Typhimurium From Diarrhoeal Outpatients in Guangdong, China, 2010-2017 |
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| 520 | |a Copyright © 2022 Jiang, Ke, Wu, Wang, Fang, Sun, Wang, Lei, Shao and Liao. | ||
| 520 | |a Salmonella enterica can lead to intestinal diarrhea, and the emergence and spread of cephalosporin-resistant Salmonella have brought great challenges to clinical treatment. Therefore, this study investigated the prevalence and transmission of bla CTX-M genes among S. Typhimurium from diarrhoeal outpatients in Guangdong, China, from 2010 to 2017. A total of 221 bla CTX-M-positive isolates were recovered from 1,263 S. Typhimurium isolates from the facal samples of diarrhoea patients in 45 general hospitals from 11 cities. The most popular CTX-M gene was bla CTX-M-55 (39.6%, 72/182) in the CTX-M-1 group, followed by bla CTX-M-14 (22.5%, 41/182) and bla CTX-M-65 (19.2%, 35/182) in the CTX-M-9 group. The isolates that carried bla CTX-M-9G had significantly higher resistance rates to multiple antibacterials compared with bla CTX-M-1G (p < 0.01). Meanwhile, PFGE analysis not only showed the clonal transmission of bla CTX-M-55/14/65-positve isolates of diarrhoeal outpatients' origins from different hospitals in Guangdong province, but also the characteristic of bla CTX-M-55/14/65-positve isolates' bacterial persistence. Multilocus sequence typing (MLST) analysis indicated that these S. Typhimurium isolates possessed ST34 and ST19. Furthermore, genomic Beast phylogenomic analysis provided the evidence of a close relationship of bla CTX-M-positive S. Typhimurium isolates between the outpatients and pork. Most bla CTX-M-55/14/65 genes were transmitted by non-typeable or IncI1/IncFII/IncHI2 plasmids with the size of ranging from ~80 to ~280 kb. Moreover, whole-genome sequencing (WGS) analysis further revealed that bla CTX-M-55/14/65 coexisted with other 25 types of ARGs, of which 11 ARGs were highly prevalent with the detection rates >50%, and it first reported the emergence of bla TEM-141 in S. Typhimurium. This study underscores the importance of surveillance for bla CTX-M-positive microbes in diarrhea patients | ||
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| 700 | 1 | |a Liao, Xiao-Ping |e verfasserin |4 aut | |
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