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Su Y, Xin L, Zhang F, Peng C, Li Z, Liu C, Wang F. Drug resistance analysis of three types of avian-origin carbapenem-resistant Enterobacteriaceae in Shandong Province, China. Poult Sci 2023; 102:102483. [PMID: 36682131 PMCID: PMC9876955 DOI: 10.1016/j.psj.2023.102483] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/29/2022] [Accepted: 01/03/2023] [Indexed: 01/09/2023] Open
Abstract
Animal-derived Enterobacteriaceae bacteria such as Escherichia coli (E. coli), Proteus mirabilis (P. mirabilis), and Klebsiella pneumoniae (K. pneumoniae) are important food-borne zoonotic bacilli that exist widely in the broiler-breeding industry. Although carbapenem antibiotics are considered to be the last line of defense against multidrug-resistant bacteria, carbapenem-resistant Enterobacteriaceae (CRE) break through them. In our study, we therefore, examined the prevalence of CRE and characteristics of antimicrobial resistance in 6 conventional broiler-fattening farms in Shandong Province, China. Our study revealed isolation rates of 3.57% (6/168) for carbapenem-resistant E. coli, 10% (5/50) for carbapenem-resistant P. mirabilis, and 3.03% (1/33) for carbapenem-resistant K. pneumoniae. All 12 CRE bacterial strains showed varying degrees of resistance to 27 antibiotics in 8 classes and were multidrug-resistant. The rate of the strains containing blaNDM genes, at 91.67% (11/12), was especially high. Among other results, the carrying rate of integrons in CRE bacteria was 91.67% (11/12), and 2 strains carried both class I and class II integrons, which accelerated the lateral transmission of resistant bacteria. Our first-ever finding of the 3 CRE bacteria E. coli, P. mirabilis, and K. pneumoniae on the same broiler farm suggests that poultry-derived CRE strains may pose a risk to humans. Moreover, our findings from surveillance can inform current understandings of the prevalence and characteristics of multidrug-resistant CRE in Shandong Province and, in turn, help to curb threats to food safety and public health and better prevent and control infectious zoonotic diseases.
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Affiliation(s)
- Yaxin Su
- Department of Veterinary Public Health, College of Veterinary Medicine & Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Taian City, 271018, Shandong, PR China
| | - Li Xin
- Department of Internal Medicine-Cardiovascular, The Affiliated Tai'an City Central Hospital of Qingdao University, Taian City, 271000, Shandong, PR China
| | - Feng Zhang
- Department of Ultrasonic Diagnosis and Treatment Center, The Affiliated Tai'an City Central Hospital of Qingdao University, Taian City, 271000, Shandong, PR China
| | - Chong Peng
- Department of Veterinary Public Health, College of Veterinary Medicine & Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Taian City, 271018, Shandong, PR China
| | - Zixuan Li
- Department of Veterinary Public Health, College of Veterinary Medicine & Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Taian City, 271018, Shandong, PR China
| | - Cong Liu
- Department of Veterinary Public Health, College of Veterinary Medicine & Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Taian City, 271018, Shandong, PR China
| | - Fangkun Wang
- Department of Veterinary Public Health, College of Veterinary Medicine & Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Shandong Agricultural University, Taian City, 271018, Shandong, PR China.
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Baraka K, Abozahra R, Haggag MM, Abdelhamid SM. Genotyping and molecular investigation of plasmid-mediated carbapenem resistant clinical Klebsiella pneumoniae isolates in Egypt. AIMS Microbiol 2023; 9:228-244. [PMID: 37091821 PMCID: PMC10113168 DOI: 10.3934/microbiol.2023014] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 03/14/2023] [Accepted: 03/17/2023] [Indexed: 04/25/2023] Open
Abstract
Klebsiella pneumoniae is a multidrug-resistant nosocomial pathogen. Carbapenem resistance is mediated mainly by enzymes carried on transmissible plasmids causing their dissemination among other members of Enterobacteriaceae. This study aimed to molecularly detect carbapenem resistance genes in K. pneumoniae clinical isolates, genotype them using ERIC-PCR, and investigate plasmid transformation of resistant genes by using ERIC-PCR and sequencing. Methods Antimicrobial resistance of sixty carbapenem-resistant K. pneumoniae strains was evaluated by using the disc diffusion method. Five carbapenemases' genes were amplified by conventional PCR. Genotyping was performed using ERIC-PCR. Gene transformation was performed for the five genes to sensitive isolates. Wild and transformed isolates were genetically investigated using ERIC-PCR and sequencing. Results Carbapenem resistance in our isolates was associated with high resistance to all tested antibiotics. The 60 K. pneumoniae isolates were divided into 6 resistor types. The prevalence of KPC, IMP, VIM, NDM, and OXA-48 genes were 17%, 63%, 93%, 85% and 100%, respectively. Dendrogram analysis showed 57 distinct patterns, arranged in three clusters. The five genes were transformed successfully into sensitive isolates. ERIC profiles of wild and transformed isolates showed cluster A contained all the wild isolates, and cluster B contained all transformed isolates. Genetic sequences of the 5 genes reflected high genetic similarity with the GenBank reference genes before plasmid transformation; however, a distinguishable decrease of genetic similarity was observed after transformation. Conclusion Plasmid-mediated carbapenem resistance in K. pneumoniae and its dissemination among different strains is a real threat to public health.
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Affiliation(s)
- Kholoud Baraka
- Microbiology and Immunology Department, Faculty of Pharmacy, Damanhour University, El Behira, Egypt
- * Correspondence: ; Tel: +21006878989
| | - Rania Abozahra
- Microbiology and Immunology Department, Faculty of Pharmacy, Damanhour University, El Behira, Egypt
| | - Marwa Mohammed Haggag
- Microbiology and Immunology Department, Faculty of Pharmacy, Sinai University, Arish Campus, Sinai, Egypt
| | - Sarah M Abdelhamid
- Microbiology and Immunology Department, Faculty of Pharmacy, Damanhour University, El Behira, Egypt
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Ando S, Nakano R, Kuchibiro T, Yamasaki K, Suzuki Y, Nakano A, Mizuno T, Kasahara K, Yano H. Emergence of VIM-2-producing Citrobacter freundii in Japan. Infect Dis (Lond) 2018; 50:862-863. [PMID: 30317906 DOI: 10.1080/23744235.2018.1498592] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Affiliation(s)
- Sayaka Ando
- a Department of Microbiology and Infectious Diseases, Nara Medical University , Kashihara , Nara , Japan
| | - Ryuichi Nakano
- a Department of Microbiology and Infectious Diseases, Nara Medical University , Kashihara , Nara , Japan
| | - Tomokazu Kuchibiro
- b Department of Clinical Laboratory, Naga Municipal Hospital , Kinokawa , Wakayama , Japan
| | - Katsutoshi Yamasaki
- c Department of Medical Life Science, Kurashiki University of Science and Arts , Kurashiki , Okayama , Japan
| | - Yuki Suzuki
- a Department of Microbiology and Infectious Diseases, Nara Medical University , Kashihara , Nara , Japan
| | - Akiyo Nakano
- a Department of Microbiology and Infectious Diseases, Nara Medical University , Kashihara , Nara , Japan
| | - Tomoki Mizuno
- a Department of Microbiology and Infectious Diseases, Nara Medical University , Kashihara , Nara , Japan
| | - Kei Kasahara
- d Center of Infectious Diseases Nara Medical University , Kashihara , Nara , Japan
| | - Hisakazu Yano
- a Department of Microbiology and Infectious Diseases, Nara Medical University , Kashihara , Nara , Japan
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De Belder D, Lucero C, Rapoport M, Rosato A, Faccone D, Petroni A, Pasteran F, Albornoz E, Corso A, Gomez SA. Genetic Diversity of KPC-Producing Escherichia coli, Klebsiella oxytoca, Serratia marcescens, and Citrobacter freundii Isolates from Argentina. Microb Drug Resist 2017; 24:958-965. [PMID: 29236574 DOI: 10.1089/mdr.2017.0213] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The predominance of Klebsiella pneumoniae carbapenemase (KPC)-producing K. pneumoniae was caused by the spread of ST258 clone. In Latin America, KPC was reported in 2006, with the isolation of genetically unrelated K. pneumoniae in Colombia. Since then, the expansion of blaKPC in either K. pneumoniae ST258 or other Enterobacteriaceae (ETB) species was increasingly reported. In this study, we characterized 89 KPC-producing Escherichia coli, Klebsiella oxytoca, Serratia marcescens, and Citrobacter freundii that were received between 2010 and 2014. The results revealed that all isolates harbored blaKPC-2. Moreover, the dissemination of KPC by non-K. pneumoniae was mainly caused by the dispersion of ETB mostly genetically unrelated. E. coli is a community pathogen that may serve as the vehicle for the spread of KPC into community settings. Recently, KPC was detected in E. coli ST131, an international epidemic and multidrug-resistant clone. We found that 5/29 KPC-producing E. coli belonged to ST131 and four were blaCTXM-15 producers. The detection of blaKPC in ST131 should be closely monitored to prevent further dissemination. The blaKPC is generally located within Tn4401 transposon capable of mobilization through transposition found in plasmids in ST258. Less is known about the diversity of blaKPC genetic elements that disseminate horizontally among other species of ETB. We found that 16/29 E. coli and 2/18 S. marcescens harbored blaKPC-2 in Tn4401a. In 71 isolates, blaKPC-2 was located amidst diverse Tn3-derived genetic elements bearing non-Tn4401 structure. Further studies on the plasmids that encode blaKPC-2 in these clinical isolates may provide additional insight into its transmission mechanisms.
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Affiliation(s)
- Denise De Belder
- 1 Servicio Antimicrobianos, Dpto. Bacteriología, Instituto Nacional de Enfermedades Infecciosas , ANLIS "Dr. Carlos G. Malbrán," Buenos Aires, Argentina .,2 Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Buenos Aires, Argentina.
| | - Celeste Lucero
- 1 Servicio Antimicrobianos, Dpto. Bacteriología, Instituto Nacional de Enfermedades Infecciosas , ANLIS "Dr. Carlos G. Malbrán," Buenos Aires, Argentina
| | - Melina Rapoport
- 1 Servicio Antimicrobianos, Dpto. Bacteriología, Instituto Nacional de Enfermedades Infecciosas , ANLIS "Dr. Carlos G. Malbrán," Buenos Aires, Argentina
| | - Adriana Rosato
- 3 Department of Pathology and Genomic Medicine, Center for Molecular and Translational Human Infectious Diseases Research, Houston Methodist Research Institute, Houston, Texas
| | - Diego Faccone
- 1 Servicio Antimicrobianos, Dpto. Bacteriología, Instituto Nacional de Enfermedades Infecciosas , ANLIS "Dr. Carlos G. Malbrán," Buenos Aires, Argentina .,2 Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Buenos Aires, Argentina.
| | - Alejandro Petroni
- 1 Servicio Antimicrobianos, Dpto. Bacteriología, Instituto Nacional de Enfermedades Infecciosas , ANLIS "Dr. Carlos G. Malbrán," Buenos Aires, Argentina
| | - Fernando Pasteran
- 1 Servicio Antimicrobianos, Dpto. Bacteriología, Instituto Nacional de Enfermedades Infecciosas , ANLIS "Dr. Carlos G. Malbrán," Buenos Aires, Argentina
| | - Ezequiel Albornoz
- 1 Servicio Antimicrobianos, Dpto. Bacteriología, Instituto Nacional de Enfermedades Infecciosas , ANLIS "Dr. Carlos G. Malbrán," Buenos Aires, Argentina
| | - Alejandra Corso
- 1 Servicio Antimicrobianos, Dpto. Bacteriología, Instituto Nacional de Enfermedades Infecciosas , ANLIS "Dr. Carlos G. Malbrán," Buenos Aires, Argentina
| | - Sonia A Gomez
- 1 Servicio Antimicrobianos, Dpto. Bacteriología, Instituto Nacional de Enfermedades Infecciosas , ANLIS "Dr. Carlos G. Malbrán," Buenos Aires, Argentina .,2 Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Buenos Aires, Argentina.
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Ye S, Ni L, Wang S, Dai W. Identification of an NDM-1-producing Klebsiella pneumoniae from diabetic foot ulcer in China. Infect Dis (Lond) 2017; 50:460-462. [PMID: 29161945 DOI: 10.1080/23744235.2017.1407038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Affiliation(s)
- Shuai Ye
- a Department of Endocrinology , The Second People's Hospital of Hefei , Hefei , Anhui , China
| | - Li Ni
- b Department of Endocrinology , Anqing Hospital Affiliated to Anhui Medical University , Anqing , Anhui , China
| | - Sihu Wang
- b Department of Endocrinology , Anqing Hospital Affiliated to Anhui Medical University , Anqing , Anhui , China
| | - Wu Dai
- a Department of Endocrinology , The Second People's Hospital of Hefei , Hefei , Anhui , China
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Jiang X, Poirel L, Nordmann P. Lack of polymyxin resistance among carbapenemase-producing Enterobacteriaceae in a university hospital in China. Infect Dis (Lond) 2017; 49:556-557. [DOI: 10.1080/23744235.2017.1292543] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Affiliation(s)
- Xiaofei Jiang
- Emerging Antibiotic Resistance Unit, Medical and Molecular Microbiology, Department of Medicine, University of Fribourg, Fribourg, Switzerland
- French INSERM European Unit, University of Fribourg (LEA-IAME), Fribourg, Switzerland
- National Reference Center for Emerging Antibiotic Resistance, Switzerland
- Department of Laboratory Medicine, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Laurent Poirel
- Emerging Antibiotic Resistance Unit, Medical and Molecular Microbiology, Department of Medicine, University of Fribourg, Fribourg, Switzerland
- French INSERM European Unit, University of Fribourg (LEA-IAME), Fribourg, Switzerland
- National Reference Center for Emerging Antibiotic Resistance, Switzerland
| | - Patrice Nordmann
- Emerging Antibiotic Resistance Unit, Medical and Molecular Microbiology, Department of Medicine, University of Fribourg, Fribourg, Switzerland
- French INSERM European Unit, University of Fribourg (LEA-IAME), Fribourg, Switzerland
- National Reference Center for Emerging Antibiotic Resistance, Switzerland
- Department of Laboratory Medicine, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
- University of Lausanne and University Hospital Center, Lausanne, Switzerland
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Yu J, Wang Y, Chen Z, Zhu X, Tian L, Li L, Sun Z. Outbreak of nosocomial NDM-1-producing Klebsiella pneumoniae ST1419 in a neonatal unit. J Glob Antimicrob Resist 2017; 8:135-139. [PMID: 28109845 DOI: 10.1016/j.jgar.2016.10.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Revised: 10/16/2016] [Accepted: 10/26/2016] [Indexed: 12/08/2022] Open
Abstract
OBJECTIVES The aim of this study was to characterise carbapenem-resistant Klebsiella pneumoniae isolates recovered from neonatal clinical specimens over a 4-month period. METHODS Seven carbapenem-resistant K. pneumoniae isolates were analysed. Antibiotic susceptibilities of the isolates were determined by the agar dilution method, and the drug resistance genes were evaluated by PCR. Clonal relatedness of the isolates was assessed using pulsed-field gel electrophoresis (PFGE) and multilocus sequence typing (MLST). Conjugation experiments and Southern blot hybridisation were performed to determine the transferability of the plasmids. RESULTS All of the K. pneumoniae isolates carried the blaNDM-1 gene but were negative for all other carbapenemases tested. All of the isolates harboured blaSHV-12, and five isolates also carried blaCTX-M-15 and/or blaTEM-1. All of the isolates exhibited multidrug resistance. The isolates belonged to sequence types ST1419 and ST101 and formed three different PFGE patterns. Plasmids carrying blaNDM-1 were successfully transferred from six of the seven isolates to the Escherichia coli recipient. These six NDM-1-producing K. pneumoniae were clonal and carried blaNDM-1 on the same plasmid, but one isolate possibly carried chromosomal blaNDM-1. CONCLUSIONS This is the first report of NDM-1-positive K. pneumoniae ST1419 from neonates in China. Closer attention should be paid to monitoring blaNDM-1 gene dissemination because it is potentially transferred horizontally.
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Affiliation(s)
- Jing Yu
- Department of Clinical Laboratory, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Road 1095#, Wuhan 430030, China
| | - Yue Wang
- Department of Clinical Laboratory, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Road 1095#, Wuhan 430030, China
| | - Zhongju Chen
- Department of Clinical Laboratory, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Road 1095#, Wuhan 430030, China
| | - Xuhui Zhu
- Department of Clinical Laboratory, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Road 1095#, Wuhan 430030, China
| | - Lei Tian
- Department of Clinical Laboratory, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Road 1095#, Wuhan 430030, China
| | - Li Li
- Department of Clinical Laboratory, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Road 1095#, Wuhan 430030, China
| | - Ziyong Sun
- Department of Clinical Laboratory, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Jiefang Road 1095#, Wuhan 430030, China.
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Markovska R, Stoeva T, Boyanova L, Stankova P, Pencheva D, Kaneva R, Mitev V, Mitov I. Isolation of Escherichia coli ST131 producing KPC-2 in Bulgaria. Infect Dis (Lond) 2017; 49:429-431. [DOI: 10.1080/23744235.2016.1270464] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Affiliation(s)
- Rumyana Markovska
- Medical University-Sofia, Bulgaria, Medical Faculty, Department of Medical Microbiology
| | - Temenuga Stoeva
- Medical University of Varna, Department of Microbiology, Varna, Bulgaria
| | - Lyudmila Boyanova
- Medical University-Sofia, Bulgaria, Medical Faculty, Department of Medical Microbiology
| | - Petya Stankova
- Medical University-Sofia, Bulgaria, Medical Faculty, Department of Medical Microbiology
| | | | - Radka Kaneva
- Medical University- Sofia, Bulgaria, Molecular Medicine Center
| | - Vanyo Mitev
- Medical University- Sofia, Bulgaria, Molecular Medicine Center
| | - Ivan Mitov
- Medical University-Sofia, Bulgaria, Medical Faculty, Department of Medical Microbiology
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Chen H, Cao J, Zhou C, Liu H, Zhang X, Zhou T. Biofilm Formation Restrained by Subinhibitory Concentrations of Tigecyclin in Acinetobacter baumannii Is Associated with Downregulation of Efflux Pumps. Chemotherapy 2016; 62:128-133. [PMID: 27816975 DOI: 10.1159/000450537] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Accepted: 08/21/2016] [Indexed: 11/19/2022]
Abstract
BACKGROUND Tigecycline, one of the few therapeutic options against multidrug-resistant Acinetobacter baumannii, reaches subinhibitory serum concentrations only with cautious clinical dosing and pharmacokinetics. Subinhibitory concentrations of tigecycline might induce an A. baumannii biofilm. METHODS Biofilm formation was assessed via the crystal violet staining method. We further analyzed the main biofilm components with NaIO4, proteinase K, and DNase. Real-time RT-PCR was applied for quantitative detection of biofilm potential-associated genes. RESULTS In this study, A. baumannii proved to be a strong biofilm producer, and we found that proteins and extracellular DNA are crucial components of the A. baumannii biofilm. Quantitative real-time RT-PCR revealed positive correlations between biofilm formation restrained by subinhibitory concentrations of tigecycline and the expression of biofilm potential-associated genes, especially the AdeFGH efflux pump gene. CONCLUSION Our results suggest that downregulation of efflux pumps, especially the AdeFGH efflux pump, is probably responsible for the decline in biofilm formation in A. baumannii treated with subinhibitory concentrations of tigecyclin.
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Affiliation(s)
- Huale Chen
- Department of Clinical Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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10
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Sbrana F, Malcarne P, Bernardeschi G, Ripoli A, Tascini C. Appropriateness of empirical therapy in carbapenem-resistant Klebsiella pneumoniae intensive care unit acquired infection: role of surveillance cultures. Infect Dis (Lond) 2016; 48:643-5. [DOI: 10.3109/23744235.2016.1172107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Francesco Sbrana
- U.O. Lipoaferesi, Fondazione Toscana Gabriele Monasterio, Via Moruzzi,1 - Pisa, Italy
| | - Paolo Malcarne
- U.O. Anestesia e Rianimazione VI° – Pronto Soccorso, Azienda Ospedaliera Universitaria Pisana, Pisa, Italy
| | - Gaia Bernardeschi
- U.O. Anestesia e Rianimazione VI° – Pronto Soccorso, Azienda Ospedaliera Universitaria Pisana, Pisa, Italy
| | - Andrea Ripoli
- U.O. Lipoaferesi, Fondazione Toscana Gabriele Monasterio, Via Moruzzi,1 - Pisa, Italy
| | - Carlo Tascini
- U.O. Malattie Infettive, Azienda Ospedaliera Universitaria Pisana, Pisa, Italy
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He Q, Chen W, Huang L, Lin Q, Zhang J, Liu R, Li B. Performance evaluation of three automated identification systems in detecting carbapenem-resistant Enterobacteriaceae. Ann Clin Microbiol Antimicrob 2016; 15:40. [PMID: 27328762 PMCID: PMC4915035 DOI: 10.1186/s12941-016-0154-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 06/08/2016] [Indexed: 01/04/2023] Open
Abstract
Background Carbapenem-resistant Enterobacteriaceae (CRE) is prevalent around the world. Rapid and accurate detection of CRE is urgently needed to provide effective treatment. Automated identification systems have been widely used in clinical microbiology laboratories for rapid and high-efficient identification of pathogenic bacteria. However, critical evaluation and comparison are needed to determine the specificity and accuracy of different systems. The aim of this study was to evaluate the performance of three commonly used automated identification systems on the detection of CRE. Methods A total of 81 non-repetitive clinical CRE isolates were collected from August 2011 to August 2012 in a Chinese university hospital, and all the isolates were confirmed to be resistant to carbapenems by the agar dilution method. The potential presence of carbapenemase genotypes of the 81 isolates was detected by PCR and sequencing. Using 81 clinical CRE isolates, we evaluated and compared the performance of three automated identification systems, MicroScan WalkAway 96 Plus, Phoenix 100, and Vitek 2 Compact, which are commonly used in China. To identify CRE, the comparator methodology was agar dilution method, while the PCR and sequencing was the comparator one to identify CPE. Results PCR and sequencing analysis showed that 48 of the 81 CRE isolates carried carbapenemase genes, including 23 (28.4 %) IMP-4, 14 (17.3 %) IMP-8, 5 (6.2 %) NDM-1, and 8 (9.9 %) KPC-2. Notably, one Klebsiella pneumoniae isolate produced both IMP-4 and NDM-1. One Klebsiellaoxytoca isolate produced both KPC-2 and IMP-8. Of the 81 clinical CRE isolates, 56 (69.1 %), 33 (40.7 %) and 77 (95.1 %) were identified as CRE by MicroScan WalkAway 96 Plus, Phoenix 100, and Vitek 2 Compact, respectively. The sensitivities/specificities of MicroScan WalkAway, Phoenix 100 and Vitek 2 were 93.8/42.4 %, 54.2/66.7 %, and 75.0/36.4 %, respectively. Conclusions The MicroScan WalkAway and Viteck2 systems are more reliable in clinical identification of CRE, whereas additional tests are required for the Pheonix 100 system. Our study provides a useful guideline for using automated identification systems for CRE identification.
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Affiliation(s)
- Qingwen He
- Department of Clinical Laboratory, Fujian Medical University Union Hospital, 29 Xinquan Rd., Fuzhou, 350001, Fujian, People's Republic of China
| | - Weiyuan Chen
- Medical Technology and Engineering College, Fujian Medical University, Fuzhou, 350004, Fujian, People's Republic of China
| | - Liya Huang
- Medical Technology and Engineering College, Fujian Medical University, Fuzhou, 350004, Fujian, People's Republic of China
| | - Qili Lin
- Medical Technology and Engineering College, Fujian Medical University, Fuzhou, 350004, Fujian, People's Republic of China
| | - Jingling Zhang
- Medical Technology and Engineering College, Fujian Medical University, Fuzhou, 350004, Fujian, People's Republic of China
| | - Rui Liu
- Medical Technology and Engineering College, Fujian Medical University, Fuzhou, 350004, Fujian, People's Republic of China
| | - Bin Li
- Department of Clinical Laboratory, Fujian Medical University Union Hospital, 29 Xinquan Rd., Fuzhou, 350001, Fujian, People's Republic of China.
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Thomson GK, Snyder JW, McElheny CL, Thomson KS, Doi Y. Coproduction of KPC-18 and VIM-1 Carbapenemases by Enterobacter cloacae: Implications for Newer β-Lactam-β-Lactamase Inhibitor Combinations. J Clin Microbiol 2016; 54:791-4. [PMID: 26719440 PMCID: PMC4767958 DOI: 10.1128/jcm.02739-15] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2015] [Accepted: 12/22/2015] [Indexed: 01/04/2023] Open
Abstract
Enterobacter cloacae strain G6809 with reduced susceptibility to carbapenems was identified from a patient in a long-term acute care hospital in Kentucky. G6809 belonged to sequence type (ST) 88 and carried two carbapenemase genes, bla(KPC-18) and bla(VIM-1). Whole-genome sequencing localized bla(KPC-18) to the chromosome and bla(VIM-1) to a 58-kb plasmid. The strain was highly resistant to ceftazidime-avibactam. Insidious coproduction of metallo-β-lactamase with KPC-type carbapenemase has implications for the use of next-generation β-lactam-β-lactamase inhibitor combinations.
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Affiliation(s)
- Gina K Thomson
- Department of Microbiology, University of Louisville Hospital, Louisville, Kentucky, USA Department of Pathology and Laboratory Medicine, University of Louisville, Louisville, Kentucky, USA
| | - James W Snyder
- Department of Pathology and Laboratory Medicine, University of Louisville, Louisville, Kentucky, USA
| | - Christi L McElheny
- Division of Infectious Diseases, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
| | - Kenneth S Thomson
- Department of Pathology and Laboratory Medicine, University of Louisville, Louisville, Kentucky, USA
| | - Yohei Doi
- Division of Infectious Diseases, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania, USA
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Wang Y, Mi Z, Niu W, An X, Yuan X, Liu H, Li P, Liu Y, Feng Y, Huang Y, Zhang X, Zhang Z, Fan H, Peng F, Tong Y, Bai C. Intranasal treatment with bacteriophage rescues mice from Acinetobacter baumannii-mediated pneumonia. Future Microbiol 2016; 11:631-41. [PMID: 26925593 DOI: 10.2217/fmb.16.11] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIM With the emergence of drug-resistant bacteria, finding alternative agents to treat antibiotic-resistant bacterial infections is imperative. MATERIALS & METHODS A mouse pneumonia model was developed by combining cyclophosphamide pretreatment and Acinetobacter baumannii challenge, and a lytic bacteriophage was evaluated for its therapeutic efficacy in this model by examining the survival rate, bacterial load in the lung and lung pathology. RESULTS Intranasal instillation with bacteriophage rescued 100% of mice following lethal challenge with A. baumannii. Phage treatment reduced bacterial load in the lung. Microcomputed tomography indicated a reduction in lung inflammation in mice given phage. CONCLUSION This research demonstrates that intranasal application of bacteriophage is viable, and could provide complete protection from pneumonia caused by A. baumannii.
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Affiliation(s)
- Yong Wang
- Department of Respiratory Medicine, PLA Hospital 307, Beijing 100071, China
| | - Zhiqiang Mi
- State Key Laboratory of Pathogen & Biosecurity, Beijing Institute of Microbiology & Epidemiology, Beijing 100071, China
| | - Wenkai Niu
- Department of Respiratory Medicine, PLA Hospital 307, Beijing 100071, China
| | - Xiaoping An
- State Key Laboratory of Pathogen & Biosecurity, Beijing Institute of Microbiology & Epidemiology, Beijing 100071, China
| | - Xin Yuan
- Department of Respiratory Medicine, PLA Hospital 307, Beijing 100071, China
| | - Huiying Liu
- Department of Respiratory Medicine, PLA Hospital 307, Beijing 100071, China
| | - Puyuan Li
- Department of Respiratory Medicine, PLA Hospital 307, Beijing 100071, China
| | - Yannan Liu
- Department of Respiratory Medicine, PLA Hospital 307, Beijing 100071, China
| | - Yuzhong Feng
- Department of Respiratory Medicine, PLA Hospital 307, Beijing 100071, China
| | - Yong Huang
- State Key Laboratory of Pathogen & Biosecurity, Beijing Institute of Microbiology & Epidemiology, Beijing 100071, China
| | - Xianglilan Zhang
- State Key Laboratory of Pathogen & Biosecurity, Beijing Institute of Microbiology & Epidemiology, Beijing 100071, China
| | - Zhiyi Zhang
- State Key Laboratory of Pathogen & Biosecurity, Beijing Institute of Microbiology & Epidemiology, Beijing 100071, China
| | - Hang Fan
- State Key Laboratory of Pathogen & Biosecurity, Beijing Institute of Microbiology & Epidemiology, Beijing 100071, China
| | - Fan Peng
- Department of Respiratory Medicine, the First Hospital of Changsha, 410000, China
| | - Yigang Tong
- Department of Respiratory Medicine, PLA Hospital 307, Beijing 100071, China
| | - Changqing Bai
- State Key Laboratory of Pathogen & Biosecurity, Beijing Institute of Microbiology & Epidemiology, Beijing 100071, China
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