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Yuan D, Wang M, Jia R, Chen S, Liu M, Zhao X, Yang Q, Wu Y, Zhang S, Huang J, Ou X, Mao S, Gao Q, Sun D, Tian B, Zhu D, Cheng A. Emergence of a floR-carrying Plasmid in Extended Spectrum β-lactamase (ESBL) Producing Pasteurella aerogenes, Isolated from an Avian Species in China. Poult Sci 2022; 101:102207. [PMID: 36274437 PMCID: PMC9593741 DOI: 10.1016/j.psj.2022.102207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 08/25/2022] [Accepted: 09/07/2022] [Indexed: 11/25/2022] Open
Abstract
Identification and analysis of the antimicrobial resistance of Pasteurella aerogenes (P. aerogenes) isolated from poultry. For susceptibility testing in accordance with the CLSI, plasmids were extracted via alkaline lysis and transferred by CaCl2 treatment. Genomic DNA of a representative P. aerogenes isolate was subjected to whole genome sequencing. CCCP was utilized to determine whether SF190908 contains an efflux pump. The blaVEB gene was ligated with the pET-28 plasmid and transferred to Escherichia coli to verify it as an ESBL gene. SF190908 isolated from poultry was identified as P. aerogenes based upon biochemical and 16s rRNA results. The isolate showed high MIC values for eight antimicrobials. Sequencing results showed that the mobile element-mediated antimicrobial resistance gene cluster conferred antimicrobial resistance on the strain, and a single 5,105-bp plasmid, designated pRCAD0752PA-1, was isolated. Four antimicrobial resistance gene clusters were identified in the SF190908 chromosome; one antimicrobial resistance gene cluster carried the blaVEB gene, which was verified as ESBL according to the CLSI and was detected in Pasteurellaceae for the first time, to the best of our knowledge. The efflux pump may confer antimicrobial resistance to SF190908. P. aerogenes isolated from poultry showed resistance genes encoded in mobile elements that confer multi-antimicrobial resistance to SF190908. The antimicrobial-resistant plasmid pRCAD0752PA-1 was isolated in SF190908 and conferred resistance to florfenicol. This study indicates an urgent need to increase efforts to monitor the spread of P. aerogenes multi-antimicrobial-resistant strains and plasmids, especially in newly discovered at-risk species such as poultry.
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Elsayed MSAE, Eldsouky SM, Roshdy T, Said L, Thabet N, Allam T, Mohammed ABA, Nasr GM, Basiouny MSM, Akl BA, Nader MM, Hasan AS, Salah A. Virulence Determinants and Antimicrobial Profiles of Pasteurella multocida Isolated from Cattle and Humans in Egypt. Antibiotics (Basel) 2021; 10:480. [PMID: 33921977 DOI: 10.3390/antibiotics10050480] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 04/12/2021] [Accepted: 04/15/2021] [Indexed: 11/24/2022] Open
Abstract
Pasteurella multocida is a Gram-negative bacterium that causes drastic infections in cattle and humans. In this study, 55 isolates were recovered from 115 nasal swabs from apparently healthy and diseased cattle and humans in Minufiya and Qalyubia, Egypt. These isolates were confirmed by kmt1 existence, and molecular classification of the capsular types showed that types B, D, and E represented 23/55 (41.8%), 21/55 (38.1%), and 11/55 (20.0%), respectively. The isolates were screened for five virulence genes with hgbA, hgbB, and ptfA detected in 28/55 (50.9%), 30/55 (54.5%), and 25/55 (45.5%), respectively. We detected 17 capsular and virulence gene combinations with a discriminatory power (DI) of 0.9286; the most prevalent profiles were dcbF type D and dcbF type D, hgbA, hgbB, and ptfA, which represented 8/55 (14.5%) each. These strains exhibited high ranges of multiple antimicrobial resistance indices; the lowest resistances were against chloramphenicol, ciprofloxacin, amoxicillin/clavulanic acid, and levofloxacin. The macrolide–lincosamide–streptogramin B methylase gene erm(Q), with erm(42) encoding MLSB monomethyltransferase, mph(E) encoding a macrolide efflux pump, and msr(E) encoding macrolide-inactivating phosphotransferase were present. The class 1 and 2 integrons and extended-spectrum β-lactamase genes intl1, intl2, blaCTX-M, blaCTX-M-1, and blaTEM were detected. It is obvious to state that co-occurrence of resistance genes resulted in multiple drug-resistant phenotypes. The identified isolates were virulent, genetically diverse, and resistant to antimicrobials, highlighting the potential risk to livestock and humans.
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López-Ochoa AJ, Sánchez-Alonso P, Vázquez-Cruz C, Horta-Valerdi G, Negrete-Abascal E, Vaca-Pacheco S, Mejía R, Pérez-Márquez M. Molecular and genetic characterization of the pOV plasmid from Pasteurella multocida and construction of an integration vector for Gallibacterium anatis. Plasmid 2019; 103:45-52. [PMID: 31022414 DOI: 10.1016/j.plasmid.2019.04.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Revised: 04/18/2019] [Accepted: 04/21/2019] [Indexed: 11/16/2022]
Abstract
BACKGROUND The pOV plasmid isolated from the Pasteurella multocida strain PMOV is a new plasmid, and its molecular characterization is important for determining its gene content and its replicative properties in Pasteurellaceae family bacteria. METHODS Antimicrobial resistance mediated by the pOV plasmid was tested in bacteria. Purified pOV plasmid DNA was used to transform E. coli DH5α and Gallibacterium anatis 12656-12, including the pBluescript II KS(-) plasmid DNA as a control for genetic transformation. The pOV plasmid was digested with EcoRI for cloning fragments into the pBluescript II KS(-) vector to obtain constructs and to determine the full DNA sequence of pOV. RESULTS The pOV plasmid is 13.5 kb in size; confers sulfonamide, streptomycin and ampicillin resistance to P. multocida PMOV; and can transform E. coli DH5α and G. anatis 12656-12. The pOV plasmid was digested for the preparation of chimeric constructs and used to transform E. coli DH5α, conferring resistance to streptomycin (plasmid pSEP3), ampicillin (pSEP4) and sulfonamide (pSEP5) on the bacteria; however, similar to pBluescript II KS(-), the chimeric plasmids did not transform G. anatis 12656-12. A 1.4 kb fragment of the streptomycin cassette from pSEP3 was amplified by PCR and used to construct pSEP7, which in turn was used to interrupt a chromosomal DNA locus of G. anatis by double homologous recombination, introducing strA-strB into the G. anatis chromosome. CONCLUSION The pOV plasmid is a wide-range, low-copy-number plasmid that is able to replicate in some gamma-proteobacteria. Part of this plasmid was integrated into the G. anatis 12656-12 chromosome. This construct may prove to be a useful tool for genetic studies of G. anatis.
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Affiliation(s)
- Ana Jaqueline López-Ochoa
- Centro de Investigaciones en Ciencias Microbiológicas, Instituto de Ciencias, Universidad Autónoma de Puebla, 72570 Puebla, Pue, México
| | - Patricia Sánchez-Alonso
- Centro de Investigaciones en Ciencias Microbiológicas, Instituto de Ciencias, Universidad Autónoma de Puebla, 72570 Puebla, Pue, México
| | - Candelario Vázquez-Cruz
- Centro de Investigaciones en Ciencias Microbiológicas, Instituto de Ciencias, Universidad Autónoma de Puebla, 72570 Puebla, Pue, México.
| | - Guillermo Horta-Valerdi
- Centro de Investigaciones en Ciencias Microbiológicas, Instituto de Ciencias, Universidad Autónoma de Puebla, 72570 Puebla, Pue, México
| | - Erasmo Negrete-Abascal
- Carrera de Biología, Facultad de Estudios Superiores de Iztacala UNAM, Tlalnepantla, Edo de México 54090, México
| | - Sergio Vaca-Pacheco
- Carrera de Biología, Facultad de Estudios Superiores de Iztacala UNAM, Tlalnepantla, Edo de México 54090, México
| | - Ricardo Mejía
- Carrera de Biología, Facultad de Estudios Superiores de Iztacala UNAM, Tlalnepantla, Edo de México 54090, México
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Niemann L, Feudi C, Eichhorn I, Hanke D, Müller P, Brauns J, Nathaus R, Schäkel F, Höltig D, Wendt M, Kadlec K, Schwarz S. Plasmid-located dfrA14 gene in Pasteurella multocida isolates from three different pig-producing farms in Germany. Vet Microbiol 2019; 230:235-240. [PMID: 30827394 DOI: 10.1016/j.vetmic.2019.01.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Revised: 01/15/2019] [Accepted: 01/16/2019] [Indexed: 11/15/2022]
Abstract
Pasteurella multocida is an important respiratory tract pathogen in intensive livestock farming, especially in pigs. Antimicrobial agents are frequently used to combat infections caused by this pathogen. In a study on antimicrobial resistance among respiratory tract pathogens of pigs from 30 German pig-producing farms, P. multocida isolates (n = 9) with high minimal inhibitory concentration (MIC) values of 16/304 mg/L (n = 2), 32/608 mg/L (n = 3) or ≥64/1216 mg/L (n = 4) for trimethoprim/sulfamethoxazole (1:19) and of ≥512 mg/L (n = 9) for trimethoprim (TMP) were detected in three of these farms. The genetic relatedness of the isolates was investigated via capsule-specific PCR and macrorestriction analyses with ApaI and SmaI. Pulsed-field gel electrophoresis revealed indistinguishable restriction patterns per farm, with slight differences between the three farms. All isolates represented capsular type A. Four representative isolates, that were subjected to whole genome sequencing, shared the multi-locus sequence type (ST) 3. Their plasmids were transformed into E. coli TOP10 with subsequent selection on TMP-containing agar plates. Antimicrobial susceptibility testing and plasmid analysis of the transformants confirmed that they were resistant to sulfonamides and trimethoprim and carried only a single small plasmid. This plasmid was completely sequenced and revealed a size of 6050 bp. Sequence analyses identified the presence of a resistance gene cluster comprising the genes sul2-ΔstrA-dfrA14-ΔstrA-ΔstrB. Further analysis identified a dfrA14 gene cassette being integrated into the strA reading frame. Neither the gene dfrA14 nor this gene cluster have been detected before in P. multocida.
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Affiliation(s)
- Lisa Niemann
- Institute of Microbiology and Epizootics, Freie Universität Berlin, Berlin, Germany; Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut (FLI), Neustadt-Mariensee, Germany
| | - Claudia Feudi
- Institute of Microbiology and Epizootics, Freie Universität Berlin, Berlin, Germany
| | - Inga Eichhorn
- Institute of Microbiology and Epizootics, Freie Universität Berlin, Berlin, Germany
| | - Dennis Hanke
- Institute of Microbiology and Epizootics, Freie Universität Berlin, Berlin, Germany
| | - Petra Müller
- Department of Pharmacology, Toxicology and Pharmacy, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
| | - Jasmin Brauns
- Clinic for Swine and Small Ruminants and forensic Medicine and Ambulatory Services, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
| | | | - Franziska Schäkel
- Institute for Biometry, Epidemiology and Information Processing, WHO Collaborating Centre for Research and Training for Health at the Human-Animal-Environment Interface, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
| | - Doris Höltig
- Clinic for Swine and Small Ruminants and forensic Medicine and Ambulatory Services, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
| | - Michael Wendt
- Clinic for Swine and Small Ruminants and forensic Medicine and Ambulatory Services, University of Veterinary Medicine Hannover, Foundation, Hannover, Germany
| | - Kristina Kadlec
- Institute of Farm Animal Genetics, Friedrich-Loeffler-Institut (FLI), Neustadt-Mariensee, Germany
| | - Stefan Schwarz
- Institute of Microbiology and Epizootics, Freie Universität Berlin, Berlin, Germany.
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Abstract
Members of the highly heterogeneous family Pasteurellaceae cause a wide variety of diseases in humans and animals. Antimicrobial agents are the most powerful tools to control such infections. However, the acquisition of resistance genes, as well as the development of resistance-mediating mutations, significantly reduces the efficacy of the antimicrobial agents. This article gives a brief description of the role of selected members of the family Pasteurellaceae in animal infections and of the most recent data on the susceptibility status of such members. Moreover, a review of the current knowledge of the genetic basis of resistance to antimicrobial agents is included, with particular reference to resistance to tetracyclines, β-lactam antibiotics, aminoglycosides/aminocyclitols, folate pathway inhibitors, macrolides, lincosamides, phenicols, and quinolones. This article focusses on the genera of veterinary importance for which sufficient data on antimicrobial susceptibility and the detection of resistance genes are currently available (Pasteurella, Mannheimia, Actinobacillus, Haemophilus, and Histophilus). Additionally, the role of plasmids, transposons, and integrative and conjugative elements in the spread of the resistance genes within and beyond the aforementioned genera is highlighted to provide insight into horizontal dissemination, coselection, and persistence of antimicrobial resistance genes. The article discusses the acquisition of diverse resistance genes by the selected Pasteurellaceae members from other Gram-negative or maybe even Gram-positive bacteria. Although the susceptibility status of these members still looks rather favorable, monitoring of their antimicrobial susceptibility is required for early detection of changes in the susceptibility status and the newly acquired/developed resistance mechanisms.
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Wang M, Xiong W, Liu P, Xie X, Zeng J, Sun Y, Zeng Z. Metagenomic Insights Into the Contribution of Phages to Antibiotic Resistance in Water Samples Related to Swine Feedlot Wastewater Treatment. Front Microbiol 2018; 9:2474. [PMID: 30459724 PMCID: PMC6232670 DOI: 10.3389/fmicb.2018.02474] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 09/27/2018] [Indexed: 12/21/2022] Open
Abstract
In this study, we examined the types of antibiotic resistance genes (ARGs) possessed by bacteria and bacteriophages in swine feedlot wastewater before and after treatment using a metagenomics approach. We found that the relative abundance of ARGs in bacterial DNA in all water samples was significantly higher than that in phages DNA (>10.6-fold), and wastewater treatment did not significantly change the relative abundance of bacterial- or phage-associated ARGs. We further detected the distribution and diversity of the different types of ARGs according to the class of antibiotics to which they confer resistance, the tetracycline resistance genes were the most abundant resistance genes and phages were more likely to harbor ATP-binding cassette transporter family and ribosomal protection genes. Moreover, the colistin resistance gene mcr-1 was also detected in the phage population. When assessing the contribution of phages in spreading different groups of ARGs, β-lactamase resistance genes had a relatively high spreading ability even though the abundance was low. These findings possibly indicated that phages not only could serve as important reservoir of ARG but also carry particular ARGs in swine feedlot wastewater, and this phenomenon is independent of the environment.
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Affiliation(s)
- Mianzhi Wang
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Wenguang Xiong
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Peng Liu
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Xiying Xie
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Jiaxiong Zeng
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Yongxue Sun
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
| | - Zhenling Zeng
- National Risk Assessment Laboratory for Antimicrobial Resistance of Animal Original Bacteria, South China Agricultural University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, College of Veterinary Medicine, South China Agricultural University, Guangzhou, China
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Chainier D, Barraud O, Masson G, Couve-Deacon E, François B, Couquet CY, Ploy MC. Integron Digestive Carriage in Human and Cattle: A "One Health" Cultivation-Independent Approach. Front Microbiol 2017; 8:1891. [PMID: 29021787 PMCID: PMC5624303 DOI: 10.3389/fmicb.2017.01891] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 09/15/2017] [Indexed: 01/14/2023] Open
Abstract
Objectives: Dissemination of antimicrobial resistance (AMR) is a global issue that requires the adoption of a "One-Health" approach promoting integration of human and animal health. Besides culture-dependent techniques frequently used for AMR surveillance, cultivation-independent methods can give additional insights into the diversity and reservoir of AMR genetic determinants. Integrons are molecular markers that can provide overall and reliable estimation of AMR dissemination. In this study, considering the "One-Health" approach, we have analyzed the integron digestive carriage from stools of humans and cattle living in a same area and exposed to different antibiotic selection pressures. Methods: Three collections of human [general population (GP) and intensive care unit patients (ICUs)] and bovine (BOV) stool samples were analyzed. The three main classes of integrons were detected using a multiplex qPCR both from total DNA extracted from stools, and from Gram-negative bacteria obtained by culture after an enrichment step. Results: With the cultivation-independent approach, integron carriage was 43.8, 52.7, and 65.6% for GP, ICU, and BOV respectively, percentages being at least twofold higher to those obtained with the cultivation-dependent approach. Class 1 integrons were the most prevalent; class 2 integrons seemed more associated to cattle than to humans; no class 3 integron was detected. The integron carriage was not significantly different between GP and ICU populations according to the antibiotic consumption, whatever the approach. Conclusion: The cultivation-independent approach constitutes a complementary exploratory method to investigate the integron digestive carriage of humans and bovines, notably within subjects under antibiotic treatment. The high frequency of carriage of integrons in the gut is of clinical significance, integrons being able to easily acquire and exchange resistant genes under antibiotic selective pressure and so leading to the dissemination of resistant bacteria.
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Affiliation(s)
| | - Olivier Barraud
- INSERM, CHU Limoges, UMR 1092, Université Limoges, Limoges, France
| | - Geoffrey Masson
- INSERM, CHU Limoges, UMR 1092, Université Limoges, Limoges, France
| | | | - Bruno François
- INSERM, CHU Limoges, UMR 1092, Université Limoges, Limoges, France.,INSERM, CIC1435, CHU Limoges, Limoges, France
| | - Claude-Yves Couquet
- Laboratoire Départemental d'Analyses et de Recherches de la Haute-Vienne, Limoges, France
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Toulouse JL, Edens TJ, Alejaldre L, Manges AR, Pelletier JN. Integron-Associated DfrB4, a Previously Uncharacterized Member of the Trimethoprim-Resistant Dihydrofolate Reductase B Family, Is a Clinically Identified Emergent Source of Antibiotic Resistance. Antimicrob Agents Chemother 2017; 61:e02665-16. [PMID: 28242670 DOI: 10.1128/AAC.02665-16] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 02/11/2017] [Indexed: 01/01/2023] Open
Abstract
Whole-genome sequencing of trimethoprim-resistant Escherichia coli clinical isolates identified a member of the trimethoprim-resistant type II dihydrofolate reductase gene family (dfrB). The dfrB4 gene was located within a class I integron flanked by multiple resistance genes. This arrangement was previously reported in a 130.6-kb multiresistance plasmid. The DfrB4 protein conferred a >2,000-fold increased trimethoprim resistance on overexpression in E. coli Our results are consistent with the finding that dfrB4 contributes to clinical trimethoprim resistance.
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Bossé JT, Li Y, Walker S, Atherton T, Fernandez Crespo R, Williamson SM, Rogers J, Chaudhuri RR, Weinert LA, Oshota O, Holden MTG, Maskell DJ, Tucker AW, Wren BW, Rycroft AN, Langford PR. Identification of dfrA14 in two distinct plasmids conferring trimethoprim resistance in Actinobacillus pleuropneumoniae. J Antimicrob Chemother 2015; 70:2217-22. [PMID: 25957382 PMCID: PMC4500777 DOI: 10.1093/jac/dkv121] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2014] [Accepted: 04/05/2015] [Indexed: 11/30/2022] Open
Abstract
Objectives The objective of this study was to determine the distribution and genetic basis of trimethoprim resistance in Actinobacillus pleuropneumoniae isolates from pigs in England. Methods Clinical isolates collected between 1998 and 2011 were tested for resistance to trimethoprim and sulphonamide. The genetic basis of trimethoprim resistance was determined by shotgun WGS analysis and the subsequent isolation and sequencing of plasmids. Results A total of 16 (out of 106) A. pleuropneumoniae isolates were resistant to both trimethoprim (MIC >32 mg/L) and sulfisoxazole (MIC ≥256 mg/L), and a further 32 were resistant only to sulfisoxazole (MIC ≥256 mg/L). Genome sequence data for the trimethoprim-resistant isolates revealed the presence of the dfrA14 dihydrofolate reductase gene. The distribution of plasmid sequences in multiple contigs suggested the presence of two distinct dfrA14-containing plasmids in different isolates, which was confirmed by plasmid isolation and sequencing. Both plasmids encoded mobilization genes, the sulphonamide resistance gene sul2, as well as dfrA14 inserted into strA, a streptomycin-resistance-associated gene, although the gene order differed between the two plasmids. One of the plasmids further encoded the strB streptomycin-resistance-associated gene. Conclusions This is the first description of mobilizable plasmids conferring trimethoprim resistance in A. pleuropneumoniae and, to our knowledge, the first report of dfrA14 in any member of the Pasteurellaceae. The identification of dfrA14 conferring trimethoprim resistance in A. pleuropneumoniae isolates will facilitate PCR screens for resistance to this important antimicrobial.
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Affiliation(s)
- Janine T Bossé
- Section of Paediatrics, Department of Medicine, Imperial College London, St Mary's Campus, London W2 1PG, UK
| | - Yanwen Li
- Section of Paediatrics, Department of Medicine, Imperial College London, St Mary's Campus, London W2 1PG, UK
| | - Stephanie Walker
- Section of Paediatrics, Department of Medicine, Imperial College London, St Mary's Campus, London W2 1PG, UK
| | - Tom Atherton
- Section of Paediatrics, Department of Medicine, Imperial College London, St Mary's Campus, London W2 1PG, UK
| | - Roberto Fernandez Crespo
- Section of Paediatrics, Department of Medicine, Imperial College London, St Mary's Campus, London W2 1PG, UK
| | - Susanna M Williamson
- Animal and Plant Health Agency (APHA) Bury St Edmunds, Rougham Hill, Bury St Edmunds, Suffolk IP33 2RX, UK
| | - Jon Rogers
- Animal and Plant Health Agency (APHA) Bury St Edmunds, Rougham Hill, Bury St Edmunds, Suffolk IP33 2RX, UK
| | - Roy R Chaudhuri
- Department of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge CB3 0ES, UK
| | - Lucy A Weinert
- Department of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge CB3 0ES, UK
| | - Olusegun Oshota
- Department of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge CB3 0ES, UK
| | - Matt T G Holden
- The Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, Cambridge CB10 1SA, UK
| | - Duncan J Maskell
- Department of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge CB3 0ES, UK
| | - Alexander W Tucker
- Department of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge CB3 0ES, UK
| | - Brendan W Wren
- Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, Keppel Street, London WC1E 7HT, UK
| | - Andrew N Rycroft
- Department of Pathology and Pathogen Biology, The Royal Veterinary College, Hawkshead Campus, Hatfield, Hertfordshire AL9 7TA, UK
| | - Paul R Langford
- Section of Paediatrics, Department of Medicine, Imperial College London, St Mary's Campus, London W2 1PG, UK
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Bastien D, Ebert MCCJC, Forge D, Toulouse J, Kadnikova N, Perron F, Mayence A, Huang TL, Vanden Eynde JJ, Pelletier JN. Fragment-Based Design of Symmetrical Bis-benzimidazoles as Selective Inhibitors of the Trimethoprim-Resistant, Type II R67 Dihydrofolate Reductase. J Med Chem 2012; 55:3182-92. [DOI: 10.1021/jm201645r] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dominic Bastien
- Département de Biochimie, Université de Montréal, C.P. 6128, Succ.
Centre-ville Montréal, Québec H3C 3J7, Canada
| | - Maximilian C. C. J. C. Ebert
- Département de Biochimie, Université de Montréal, C.P. 6128, Succ.
Centre-ville Montréal, Québec H3C 3J7, Canada
| | - Delphine Forge
- Laboratoire de Chimie Organique, Université de Mons-UMONS, 20 Place du Parc,
B-7000 Mons, Belgium
| | - Jacynthe Toulouse
- Département de Biochimie, Université de Montréal, C.P. 6128, Succ.
Centre-ville Montréal, Québec H3C 3J7, Canada
| | - Natalia Kadnikova
- Département
de Chimie, Université de Montréal, C.P. 6128, Succursale
Centre-ville Montréal, Québec H3C 3J7, Canada
| | - Florent Perron
- Laboratoire de Chimie Organique, Université de Mons-UMONS, 20 Place du Parc,
B-7000 Mons, Belgium
| | - Annie Mayence
- Division of Basic Pharmaceutical
Sciences, Xavier University of Louisiana, 1 Drexel Drive, New Orleans, Louisiana 70125, United States
| | - Tien L. Huang
- Division of Basic Pharmaceutical
Sciences, Xavier University of Louisiana, 1 Drexel Drive, New Orleans, Louisiana 70125, United States
| | | | - Joelle N. Pelletier
- Département de Biochimie, Université de Montréal, C.P. 6128, Succ.
Centre-ville Montréal, Québec H3C 3J7, Canada
- Département
de Chimie, Université de Montréal, C.P. 6128, Succursale
Centre-ville Montréal, Québec H3C 3J7, Canada
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