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Xu Y, Bai X, Zhao A, Zhang W, Ba P, Liu K, Jin Y, Wang H, Guo Q, Sun H, Xu J, Xiong Y. Genetic Diversity of Intimin Gene of Atypical Enteropathogenic Escherichia coli Isolated from Human, Animals and Raw Meats in China. PLoS One 2016; 11:e0152571. [PMID: 27031337 PMCID: PMC4816571 DOI: 10.1371/journal.pone.0152571] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 03/16/2016] [Indexed: 01/08/2023] Open
Abstract
Atypical enteropathogenic Escherichia coli (aEPEC) is considered to be an emerging enteropathogen that is more prevalent than typical EPEC in developing and developed countries. The major adherence factor, intimin, an outer membrane protein encoded by eae, plays a pivotal role in the pathogenesis of aEPEC. This study investigated the distribution and polymorphisms of intimin subtypes of 143 aEPEC strains from diarrheal patients, healthy carriers, animals, and raw meats in China. These aEPEC strains belonged to more than 71 different serotypes, which comprised 52 O serogroups and 24 H types. Sixty-eight different eae genotypes and 19 intimin subtypes were detected. Eighteen, eight, seven, and five intimin subtypes were identified from 86 diarrheal patients, 14 healthy carriers, 19 animals, and 24 raw meats strains, respectively. Intimin β1 was the most prevalent subtype in strains from diarrheal patients (34.88%) and animals (47.37%). There was a statistically significant difference in the distribution of eae-β1 between diarrheal patients and healthy carriers (P = 0.004). Intimin-θ was more predominant among raw meat strains (50%) than among diarrheal patients strains (12.79%, P = 0.0003), healthy carrier strains (7.14%, P = 0.007), or animal strains (15.79%, P = 0.020). The two predominant subtypes (eae-β1 and eae-θ) had considerable polymorphisms with no significant differences among the four sources. PFGE analysis revealed 119 distinct patterns and the strains were clustered into 11 groups with similarity indices ranging from 63% to 100%. These results suggest that in China, aEPEC strains from different sources are highly heterogeneous. Animals and raw meats are important sources of genetically diverse intimin-harboring aEPEC, which might serve as important transmission vehicles of these bacteria.
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Affiliation(s)
- Yanmei Xu
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Xiangning Bai
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Ailan Zhao
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Wang Zhang
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Pengbin Ba
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Kai Liu
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Yujuan Jin
- Longgang Center for Disease Control and Prevention, Shenzhen, Guangdong Province, China
| | - Hong Wang
- Zigong Center for Disease Control and Prevention, Zigong, Sichuan Province, China
| | - Qiusheng Guo
- Suixian Center for Disease Control and Prevention, Shangqiu, Henan Province, China
| | - Hui Sun
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Jianguo Xu
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Yanwen Xiong
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
- * E-mail:
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Bai X, Zhang W, Tang X, Xin Y, Xu Y, Sun H, Luo X, Pu J, Xu J, Xiong Y, Lu S. Shiga Toxin-Producing Escherichia coli in Plateau Pika (Ochotona curzoniae) on the Qinghai-Tibetan Plateau, China. Front Microbiol 2016; 7:375. [PMID: 27047483 PMCID: PMC4802371 DOI: 10.3389/fmicb.2016.00375] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Accepted: 03/08/2016] [Indexed: 01/01/2023] Open
Abstract
Shiga toxin-producing Escherichia coli (STEC) are an emerging group of zoonotic pathogens. Ruminants are the natural reservoir of STEC. In this study we determined the prevalence and characteristics of the STEC in plateau pika (Ochotona curzoniae) on the Qinghai-Tibetan Plateau, China. A total of 1116 pika samples, including 294 intestinal contents samples, 317 fecal samples, and 505 intestinal contents samples, were collected from May to August in the years 2012, 2013, and 2015, respectively. Twenty-one samples (1.88%) yielded at least one STEC isolate; in total, 22 STEC isolates were recovered. Thirteen different O serogroups and 14 serotypes were identified. One stx 1 subtype (stx 1a) and three stx 2 subtypes (stx 2a, stx 2b, and stx 2d) were present in the STEC isolates. Fifteen, fourteen, and three STEC isolates harbored the virulence genes ehxA, subA, and astA, respectively. Adherence-associated genes iha and saa were, respectively, present in 72.73 and 68.18% of the STEC isolates. Twenty antibiotics were active against all the STEC isolates; all strains were resistant to penicillin G, and some to cephalothin or streptomycin. The 22 STEC isolates were divided into 16 pulsed-field gel electrophoresis patterns and 12 sequence types. Plateau pikas may play a role in the ongoing circulation of STEC in the Qinghai-Tibetan plateau. This study provides the first report on STEC in plateau pikas and new information about STEC reservoirs in wildlife. Based on the serotypes, virulence gene profiles and multi-locus sequence typing (MLST) analysis, the majority of these pika STECs may pose a low public health risk.
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Affiliation(s)
- Xiangning Bai
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention Beijing, China
| | - Wang Zhang
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention Beijing, China
| | - Xinyuan Tang
- Qinghai Institute for Endemic Disease Prevention and Control Xining, China
| | - Youquan Xin
- Qinghai Institute for Endemic Disease Prevention and Control Xining, China
| | - Yanmei Xu
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention Beijing, China
| | - Hui Sun
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention Beijing, China
| | - Xuelian Luo
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention Beijing, China
| | - Ji Pu
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention Beijing, China
| | - Jianguo Xu
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and PreventionBeijing, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesHangzhou, China
| | - Yanwen Xiong
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and PreventionBeijing, China; Collaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesHangzhou, China
| | - Shan Lu
- State Key Laboratory for Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention Beijing, China
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Li S, Zhu Z, Wang L, Zhou Y, Tang Y, Miao Z. Prevalence and characterization of extended-spectrum beta-lactamase-producing Enterobacteriaceae in spring waters. Lett Appl Microbiol 2015; 61:544-8. [PMID: 26347372 DOI: 10.1111/lam.12489] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2015] [Revised: 08/20/2015] [Accepted: 09/02/2015] [Indexed: 11/27/2022]
Affiliation(s)
- S. Li
- College of Basic Medicine; Taishan Medical University; Tai'an China
| | - Z.C. Zhu
- Affiliated Hospital of Taishan Medical University; Tai'an China
| | - L. Wang
- Maternal and Child Health Hospital of Laiwu; Laiwu China
| | - Y.F. Zhou
- College of Animal Science and Technology; Shanxi Agricultural University; Taigu China
- Disease Controlling Center; Veterinary Bureau of Daiyue; Tai'an China
| | - Y.J. Tang
- College of Life Sciences; Taishan Medical University; Tai'an China
| | - Z.M. Miao
- College of Life Sciences; Taishan Medical University; Tai'an China
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Zhang H, Zhou Y, Guo S, Chang W. Prevalence and characteristics of extended-spectrum beta-lactamase (ESBL)-producing Enterobacteriaceae isolated from rural well water in Taian, China, 2014. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:11488-11492. [PMID: 25821088 DOI: 10.1007/s11356-015-4387-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Accepted: 03/16/2015] [Indexed: 06/04/2023]
Abstract
The production of extended-spectrum beta-lactamase (ESBL) is one of the major antimicrobial resistance mechanisms in Enterobacteriaceae, and the increasing number of ESBL-producing Enterobacteriaceae isolated from water environments has posed a serious threat to the public health. The study aimed to analyze prevalence and characterization of ESBL-producing Enterobacteriaceae from rural well waters in Taian, China. A total of 10 isolates expressing an ESBL phenotype, including 9 Escherichia coli (E. coli) and 1 Klebsiella pneumoniae (K. pneumoniae) was obtained from 4 (4%) out of the 100 sampled wells. ESBL genotype revealed that 9 expressed CTX-M-15 and 1 produced CTX-M-27. Five out of 8 ESBL-producing E. coli expressing CTX-M-15 belonged to ST10, which are mostly detected from human feces in China. Importantly, the only strain of CTX-M-27-producing E. coli belonged to multi-locus sequence type B2:131 (ST131), which may be related with severe infection in humans and animals.
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Affiliation(s)
- Hongna Zhang
- College of Animal Science and Technology, Shandong Agricultural University, Daizong Street 61, Taian, 271000, China,
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55
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Current perspectivesin pathogenesis and antimicrobial resistance of enteroaggregative Escherichia coli. Microb Pathog 2015; 85:44-9. [PMID: 26057827 DOI: 10.1016/j.micpath.2015.06.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Revised: 05/28/2015] [Accepted: 06/05/2015] [Indexed: 02/08/2023]
Abstract
Enteroaggregative Escherichia coli (EAEC) is an emerging pathogen that causes acute and persistent diarrhea in children and adults. While the pathogenic mechanisms of EAEC intestinal colonization have been uncovered (including bacterial adhesion, enterotoxin and cytotoxin secretion, and stimulation of mucosal inflammation), those of severe extraintestinal infections remain largely unknown. The recent emergence of multidrug resistant EAEC represents an alarming public health threat and clinical challenge, and research on the molecular mechanisms of resistance is urgently needed.
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Vandecasteele SJ, Ombelet S, Blumental S, Peetermans WE. The ABC of pneumococcal infections and vaccination in patients with chronic kidney disease. Clin Kidney J 2015; 8:318-24. [PMID: 26034594 PMCID: PMC4440476 DOI: 10.1093/ckj/sfv030] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Accepted: 04/13/2015] [Indexed: 01/04/2023] Open
Abstract
Background In the general population, pneumococcal polysaccharide vaccines (PPV) decrease the incidence of invasive pneumococcal disease (IPD) whereas the impact on the prevention of noninvasive pneumococcal disease is less clear. As compared with PPV, pneumococcal conjugate vaccines (PCV) provoke a higher, longer-lasting immune response resulting in a 45% decreased incidence in vaccine-type pneumonia, and a 75% decrease in vaccine-type IPD. Methods Literature review on pneumococcal vaccination in end-stage renal disease. Results As compared with the general population, patients with chronic kidney disease (CKD) suffer increased mortality and morbidity from pneumococcal disease (PD), being up to 10-fold for those treated with dialysis. Numerous, usually small and methodological heterogeneous studies demonstrate that PPV provokes a serological response in dialysis patients, kidney transplant recipients, children with nephrotic syndrome and CKD patients receiving immunosuppressive medication. This response is of less intensity and duration than in healthy controls. Similar observations were made for the PCV. The protective value of these vaccine-elicited anti-pneumococcal antibodies in the CKD population remains to be substantiated. For patients treated with dialysis, epidemiological data demonstrate a correlation—which does not equal causality—between pneumococcal vaccination status and a slightly decreased total mortality. Clinical outcome data on the effectiveness of pneumococcal vaccination in the prevention of morbidity and mortality in the CKD population are lacking. Conclusions Awaiting better evidence, pneumococcal vaccination should be advocated in all patients with CKD, as early in their disease course as possible. The ACIP schedule recommends a PCV-13 prime vaccination followed by a PPV-23 repeated vaccine at least 8 weeks later in pneumococcal non-vaccinated patients, and a PCV-13 vaccine at least 1 year after the latest PPV vaccine in previously vaccinated patients. In the UK, vaccination with PPV-23 only is recommended. There exist no good data supporting re-vaccination after 5 years in the dialysis population.
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Affiliation(s)
- Stefaan J. Vandecasteele
- Department of Nephrology and Infectious Diseases, AZ Sint-Jan Brugge-Oostende, Brugge 8000, Belgium
| | - Sara Ombelet
- Department of Nephrology and Infectious Diseases, AZ Sint-Jan Brugge-Oostende, Brugge 8000, Belgium
| | - Sophie Blumental
- Paediatric Infectious Diseases, Hôpital Universitaire des Enfants Reine Fabiola, Brussels, Belgium
| | - Willy E. Peetermans
- Department of Internal Medicine and Infectious Diseases, University Hospital Leuven, Leuven, Belgium
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Bai X, Wang H, Xin Y, Wei R, Tang X, Zhao A, Sun H, Zhang W, Wang Y, Xu Y, Zhang Z, Li Q, Xu J, Xiong Y. Prevalence and characteristics of Shiga toxin-producing Escherichia coli isolated from retail raw meats in China. Int J Food Microbiol 2015; 200:31-8. [DOI: 10.1016/j.ijfoodmicro.2015.01.018] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 12/31/2014] [Accepted: 01/24/2015] [Indexed: 12/19/2022]
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Molecular analysis and antimicrobial susceptibility of enterotoxigenic Escherichia coli from diarrheal patients. Diagn Microbiol Infect Dis 2014; 81:126-31. [PMID: 25533613 DOI: 10.1016/j.diagmicrobio.2014.10.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2014] [Revised: 10/10/2014] [Accepted: 10/20/2014] [Indexed: 11/23/2022]
Abstract
A total of 123 enterotoxigenic Escherichia coli (ETEC) isolates from diarrheal patients from June to December 2012 in Shanghai, China, were examined to determine their genetic relatedness using multilocus sequence typing and pulsed-field gel electrophoresis (PFGE) and for the presence of virulence genes and antimicrobial susceptibility. Twenty-nine sequence types (STs) and 63 PFGE patterns were identified, and results from the 2 subtyping methods correlated well. The 12 isolates of PFGE cluster B all belonged to ST-2332 and were associated with nosocomial neonatal diarrhea. Isolates of a cluster usually had the same set of virulence factors, whereas isolates of different PFGE clusters carried diverse combinations of virulence determinants. Isolates belonging to ST-2332 and ST-182 (n=9) were resistant to at least 6 antimicrobials. Our findings highlighted the need of active surveillance programs for infectious diseases collecting data at both epidemiological and genetic levels that can detect high-risk lineages of pathogens in order to rapidly identify disease outbreaks.
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Haque A, Yoshizumi A, Saga T, Ishii Y, Tateda K. ESBL-producing Enterobacteriaceae in environmental water in Dhaka, Bangladesh. J Infect Chemother 2014; 20:735-7. [PMID: 25103169 DOI: 10.1016/j.jiac.2014.07.003] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2014] [Revised: 05/08/2014] [Accepted: 07/08/2014] [Indexed: 12/14/2022]
Abstract
Pathogens encoding extended-spectrum β-lactamase (ESBL) genes represent a threat for failure of empirical antibiotic therapy and are associated with high mortality, morbidity and expenses. We examined surface water in Dhaka, capital of Bangladesh and isolated ESBL-producing Escherichia coli, Klebsiella pneumoniae and Enterobacter cloacae, suggesting the potential role of water for the dissemination and transmission of resistant genes among microorganisms. E. coli found most prevalent among isolated Enterobacteriaceae from environmental water. Molecular and genetic analysis revealed CTX-M-type and SHV-type ESBL genes in isolates that may influence the spread of multidrug resistant pathogenic bacteria causing human and animal infections in Bangladesh.
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Affiliation(s)
- Anwarul Haque
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16 Omori-Nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Ayumi Yoshizumi
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16 Omori-Nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Tomoo Saga
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16 Omori-Nishi, Ota-ku, Tokyo 143-8540, Japan
| | - Yoshikazu Ishii
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16 Omori-Nishi, Ota-ku, Tokyo 143-8540, Japan.
| | - Kazuhiro Tateda
- Department of Microbiology and Infectious Disease, Toho University School of Medicine, 5-21-16 Omori-Nishi, Ota-ku, Tokyo 143-8540, Japan
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Cao X, Zhang Z, Shen H, Ning M, Chen J, Wei H, Zhang K. Genotypic characteristics of multidrug-resistant Escherichia coli isolates associated with urinary tract infections. APMIS 2014; 122:1088-95. [PMID: 24698634 DOI: 10.1111/apm.12260] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Accepted: 01/07/2014] [Indexed: 01/18/2023]
Abstract
Escherichia coli is an important pathogen involved in community-acquired urinary tract infections (CA-UTIs). In this study, we analyzed the prevalence of frequently occurring genes and the distribution of integrons in 51 multidrug-resistant (MDR) E. coli isolates associated with CA-UTIs. The clonality of these strains was investigated by phylogrouping, multi-locus sequence typing, and pulsed-field gel electrophoresis (PFGE). All these strains were found to produce two or more resistance determinants, ceftazidime-hydrolyzing CTX-M-type extended-spectrum β-lactamases (ESBLs) and plasmid-mediated quinolone resistance determinants were the most prevalent (92.2% and 51.0%, respectively). A sulfhydryl variable-61-producing E. coli strain was identified for the first time in China. The prevalence of class 1 integrons was 54.9%, class 2 integrons were detected in three isolates but no isolate contained a class 3 integron. Phylogenetic group D was the dominant, observed in 70.6% of the isolates. PFGE analysis revealed a high level of diversity. Twenty-four distinctive sequence types (STs) including four major STs (ST648, ST224, ST38, and ST405) were identified. To our knowledge, this is the first report on the characterization of MDR E. coli isolates associated with CA-UTIs in China; our results suggest that an MDR D-ST648 clone producing CTX-M-ESBLs has emerged as a major clone in the community setting.
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Affiliation(s)
- Xiaoli Cao
- Department of Laboratory Medicine, The affiliated Nanjing Drum Tower Hospital of Nanjing University Medical School, Jiangsu, China
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Ferreira JC, Penha Filho RAC, Andrade LN, Berchieri A, Darini ALC. Detection of chromosomal bla(CTX-M-2) in diverse Escherichia coli isolates from healthy broiler chickens. Clin Microbiol Infect 2014; 20:O623-6. [PMID: 24438126 DOI: 10.1111/1469-0691.12531] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2013] [Revised: 01/08/2014] [Accepted: 01/09/2014] [Indexed: 11/27/2022]
Abstract
The rise of extended-spectrum beta-lactamase (ESBL)-producing Escherichia coli in food-producing animals is a growing concern for public health. We investigated ESBL producers isolated from broiler chickens in Brazil and characterized 19 CTX-M-2-producing E. coli. The ISCR1 was detected upstream of the chromosome-located gene bla(CTX-M-2), associated with sul-1 type integron structure. CTX-M-2-producing E. coli exhibited different PFGE-types and phylogenetic groups, showing a non-clonal dissemination. The sequence types found (ST93, ST155 and ST2309) have been associated with humans and animals worldwide. Herein, we report the chromosomal location of bla(CTX-M-2) on E. coli, highlighting the risks of multidrug-resistant bacteria in food-producing animals.
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Affiliation(s)
- J C Ferreira
- School of Pharmaceutical Sciences of Ribeirão Preto - São Paulo University (USP), Ribeirão Preto, SP, Brazil
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Chen X, Chen Y, Yang Q, Kong H, Yu F, Han D, Zheng S, Cui D, Li L. Plesiomonas shigelloides infection in Southeast China. PLoS One 2013; 8:e77877. [PMID: 24223738 PMCID: PMC3817182 DOI: 10.1371/journal.pone.0077877] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Accepted: 09/06/2013] [Indexed: 01/06/2023] Open
Abstract
Background Plesiomonas shigelloides can cause gastroenteritis and extra-intestinal diseases in humans. However, the prevalence of P. shigelloides infections has not been investigated in China. Methods Consecutive fecal specimens from outpatients with acute diarrhea and non-diarrheal patients at nine sentinel hospitals in southeast China were collected from March 2010 to May 2012. Bacterial pathogens were detected by culture, and P. shigelloides isolates were subjected to antimicrobial susceptibility testing. We also retrospectively reviewed the hospital microbiology laboratory and infection-control databases for all P. shigelloides isolates identified from 2001–2012 at our institution in addition to data on the patients' clinical and demographic characteristics. Results A total of 3,536 outpatients with acute diarrhea were enrolled in the study. P. shigelloides was isolated from 104 (2.9%) patients and accounted for 7.3% of bacterial isolates. Single-pathogen infections with P. shigelloides were present in 76 (73.1%) patients. No strain of P. shigelloides was isolated from the 478 non-diarrheal patients. Based on 444,684 nonfecal specimens, eight patients developed P. shigelloides-related extra-intestinal infections over the 12-year period. All eight patients had underlying diseases, including four with biliary tract diseases and three with liver diseases. Six cases were classified as nosocomial, and five cases were polymicrobial. P. shigelloides was sensitive to most antimicrobial drugs, except ampicillin. Conclusions In southeast China, P. shigelloides has significant clinical relevance, although the isolation rate is low.
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Affiliation(s)
- Xiao Chen
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yu Chen
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Qing Yang
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Haishen Kong
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Fei Yu
- Center of Clinical Laboratory, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Dongsheng Han
- Center of Clinical Laboratory, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Shufa Zheng
- Center of Clinical Laboratory, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Dawei Cui
- Center of Clinical Laboratory, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
| | - Lanjuan Li
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang, China
- * E-mail:
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