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Dziegiel AH, Bloomfield SJ, Savva GM, Palau R, Janecko N, Wain J, Mather AE. High Campylobacter diversity in retail chicken: epidemiologically important strains may be missed with current sampling methods. Epidemiol Infect 2024; 152:e101. [PMID: 39168635 DOI: 10.1017/s0950268824000906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2024] Open
Abstract
Campylobacter spp. are leading bacterial gastroenteritis pathogens. Infections are largely underreported, and the burden of outbreaks may be underestimated. Current strategies of testing as few as one isolate per sample can affect attribution of cases to epidemiologically important sources with high Campylobacter diversity, such as chicken meat. Multiple culture method combinations were utilized to recover and sequence Campylobacter from 45 retail chicken samples purchased across Norwich, UK, selecting up to 48 isolates per sample. Simulations based on resampling were used to assess the impact of Campylobacter sequence type (ST) diversity on outbreak detection. Campylobacter was recovered from 39 samples (87%), although only one sample was positive through all broth, temperature, and plate combinations. Three species were identified (Campylobacter jejuni, Campylobacter coli, and Campylobacter lari), and 33% of samples contained two species. Positive samples contained 1-8 STs. Simulation revealed that up to 87 isolates per sample would be required to detect 95% of the observed ST diversity, and 26 isolates would be required for the average probability of detecting a random theoretical outbreak ST to reach 95%. An optimized culture approach and selecting multiple isolates per sample are essential for more complete Campylobacter recovery to support outbreak investigation and source attribution.
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Affiliation(s)
- Agata H Dziegiel
- Microbes and Food Safety, Quadram Institute Bioscience, Norwich, UK
| | | | - George M Savva
- Core Science Resources, Quadram Institute Bioscience, Norwich, UK
| | - Raphaëlle Palau
- Microbes and Food Safety, Quadram Institute Bioscience, Norwich, UK
| | - Nicol Janecko
- Microbes and Food Safety, Quadram Institute Bioscience, Norwich, UK
| | - John Wain
- Microbes and Food Safety, Quadram Institute Bioscience, Norwich, UK
- Norwich Medical School, University of East Anglia, Norwich, UK
| | - Alison E Mather
- Microbes and Food Safety, Quadram Institute Bioscience, Norwich, UK
- Norwich Medical School, University of East Anglia, Norwich, UK
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Schiaffino F, Parker CT, Paredes Olortegui M, Pascoe B, Manzanares Villanueva K, Garcia Bardales PF, Mourkas E, Huynh S, Peñataro Yori P, Romaina Cachique L, Gray HK, Salvatierra G, Silva Delgado H, Sheppard SK, Cooper KK, Kosek MN. Genomic resistant determinants of multidrug-resistant Campylobacter spp. isolates in Peru. J Glob Antimicrob Resist 2024; 36:309-318. [PMID: 38272215 PMCID: PMC11092888 DOI: 10.1016/j.jgar.2024.01.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 12/14/2023] [Accepted: 01/06/2024] [Indexed: 01/27/2024] Open
Abstract
OBJECTIVES Antimicrobial resistant (AMR) Campylobacter is a global health threat; however, there is limited information on genomic determinants of resistance in low- and middle-income countries. We evaluated genomic determinants of AMR using a collection of whole genome sequenced Campylobacter jejuni and C. coli isolates from Iquitos, Peru. METHODS Campylobacter isolates from two paediatric cohort studies enriched with isolates that demonstrated resistance to ciprofloxacin and azithromycin were sequenced and mined for AMR determinants. RESULTS The gyrA mutation leading to the Thr86Ile amino acid change was the only gyrA mutation associated with fluoroquinolone resistance identified. The A2075G mutation in 23S rRNA was present, but three other 23S rRNA mutations previously associated with macrolide resistance were not identified. A resistant-enhancing variant of the cmeABC efflux pump genotype (RE-cmeABC) was identified in 36.1% (35/97) of C. jejuni genomes and 17.9% (12/67) of C. coli genomes. Mutations identified in the CmeR-binding site, an inverted repeat sequence in the cmeABC promoter region that increases expression of the operon, were identified in 24/97 C. jejuni and 14/67 C. coli genomes. The presence of these variants, in addition to RE-cmeABC, was noted in 18 of the 24 C. jejuni and 9 of the 14 C. coli genomes. CONCLUSIONS Both RE-cmeABC and mutations in the CmeR-binding site were strongly associated with the MDR phenotype in C. jejuni and C. coli. This is the first report of RE-cmeABC in Peru and suggests it is a major driver of resistance to the principal therapies used to treat human campylobacteriosis in this setting.
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Affiliation(s)
- Francesca Schiaffino
- Division of Infectious Diseases, University of Virginia, Charlottesville, Virginia; Faculty of Veterinary Medicine, Universidad Peruana Cayetano Heredia, San Martin de Porres, Lima, Peru
| | - Craig T Parker
- Agricultural Research Service, U.S. Department of Agriculture, Produce Safety and Microbiology Research Unit, Albany, California
| | | | - Ben Pascoe
- Ineos Oxford Institute for Antimicrobial Research, Department of Biology, University of Oxford, Oxford, United Kingdom; Centre for Genomic Pathogen Surveillance, Big Data Institute, University of Oxford, Oxford, United Kingdom
| | | | | | - Evangelos Mourkas
- Ineos Oxford Institute for Antimicrobial Research, Department of Biology, University of Oxford, Oxford, United Kingdom
| | - Steven Huynh
- Agricultural Research Service, U.S. Department of Agriculture, Produce Safety and Microbiology Research Unit, Albany, California
| | - Pablo Peñataro Yori
- Division of Infectious Diseases, University of Virginia, Charlottesville, Virginia; Asociacion Benefica Prisma, Iquitos, Peru
| | | | - Hannah K Gray
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Guillermo Salvatierra
- School of Veterinary Medicine, Faculty of Health Sciences, Universidad Peruana de Ciencias Aplicadas, Lima, Peru
| | | | - Samuel K Sheppard
- Ineos Oxford Institute for Antimicrobial Research, Department of Biology, University of Oxford, Oxford, United Kingdom
| | - Kerry K Cooper
- School of Animal and Comparative Biomedical Sciences, University of Arizona, Tucson, Arizona; The BIO5 Institute, University of Arizona, Tucson, Arizona.
| | - Margaret N Kosek
- Division of Infectious Diseases, University of Virginia, Charlottesville, Virginia; Asociacion Benefica Prisma, Iquitos, Peru.
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Jurinović L, Duvnjak S, Humski A, Ječmenica B, Taylor LT, Šimpraga B, Krstulović F, Zelenika TA, Kompes G. Genetic Diversity and Resistome Analysis of Campylobacter lari Isolated from Gulls in Croatia. Antibiotics (Basel) 2023; 12:1310. [PMID: 37627730 PMCID: PMC10451273 DOI: 10.3390/antibiotics12081310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 08/02/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023] Open
Abstract
Campylobacter lari is a thermotolerant bacterium that sporadically causes gastrointestinal diseases in humans and can be found in wildlife and the environment. C. lari is an understudied species, especially in wild birds such as gulls. Gulls are potentially good carriers of pathogens due to their opportunistic behavior and tendency to gather in large flocks. During winter and their breeding period, 1753 gulls were captured, and cloacal swabs were taken to be tested for the presence of C. lari. From isolated bacteria, the DNA was sequenced, and sequence types (ST) were determined. Sixty-four swabs were positive for C. lari, and from those, forty-three different STs were determined, of which thirty-one were newly described. The whole genome was sequenced for 43 random isolates, and the same isolates were tested for antimicrobial susceptibility using the broth microdilution method to compare them to WGS-derived antimicrobial-resistant isolates. All the tested strains were susceptible to erythromycin, gentamicin, and chloramphenicol, and all were resistant to ciprofloxacin. Resistance to ciprofloxacin was attributed to a gyrA_2 T86V mutation. Genes connected to possible beta-lactam resistance (blaOXA genes) were also detected.
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Affiliation(s)
- Luka Jurinović
- Laboratory for Bacteriology, Croatian Veterinary Institute, Poultry Centre, 10000 Zagreb, Croatia; (L.J.); (B.Š.); (F.K.); (T.A.Z.)
| | - Sanja Duvnjak
- Laboratory for Bacterial Zoonoses and Molecular Diagnostics of Bacterial Diseases, Department for Bacteriology and Parasitology, Croatian Veterinary Institute, 10000 Zagreb, Croatia;
| | - Andrea Humski
- Laboratory for Food Microbiology, Department for Veterinary Public Health, Croatian Veterinary Institute, 10000 Zagreb, Croatia
| | - Biljana Ječmenica
- Laboratory for Bacteriology, Croatian Veterinary Institute, Poultry Centre, 10000 Zagreb, Croatia; (L.J.); (B.Š.); (F.K.); (T.A.Z.)
| | | | - Borka Šimpraga
- Laboratory for Bacteriology, Croatian Veterinary Institute, Poultry Centre, 10000 Zagreb, Croatia; (L.J.); (B.Š.); (F.K.); (T.A.Z.)
| | - Fani Krstulović
- Laboratory for Bacteriology, Croatian Veterinary Institute, Poultry Centre, 10000 Zagreb, Croatia; (L.J.); (B.Š.); (F.K.); (T.A.Z.)
| | - Tajana Amšel Zelenika
- Laboratory for Bacteriology, Croatian Veterinary Institute, Poultry Centre, 10000 Zagreb, Croatia; (L.J.); (B.Š.); (F.K.); (T.A.Z.)
| | - Gordan Kompes
- Laboratory for General Bacteriology and Mycology, Department for Bacteriology and Parasitology, Croatian Veterinary Institute, 10000 Zagreb, Croatia;
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Morita D, Arai H, Isobe J, Maenishi E, Kumagai T, Maruyama F, Kuroda T. Whole-Genome and Plasmid Comparative Analysis of Campylobacter jejuni from Human Patients in Toyama, Japan, from 2015 to 2019. Microbiol Spectr 2023; 11:e0265922. [PMID: 36622198 PMCID: PMC9927224 DOI: 10.1128/spectrum.02659-22] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 12/13/2022] [Indexed: 01/10/2023] Open
Abstract
Campylobacter jejuni is a major causative agent of food poisoning, and increasing antimicrobial resistance is a concern. This study investigated 116 clinical isolates of C. jejuni from Toyama, Japan, which were isolated from 2015 to 2019. Antimicrobial susceptibility testing and whole-genome sequencing were used for phenotypic and genotypic characterization to compare antimicrobial resistance (AMR) profiles and phylogenic linkage. The multilocus sequence typing approach identified 37 sequence types (STs) and 15 clonal complexes (CCs), including 7 novel STs, and the high frequency CCs were CC21 (27.7%), CC48 (10.9%), and CC354 (9.9%). The AMR profiles and related resistant factors were as follows: fluoroquinolones (51.7%), mutation in quinolone resistance-determining region (QRDRs) (GyrA T86I); tetracyclines (27.6%), acquisition of tet(O); ampicillin (7.8%), harboring blaOXA184 or a promoter mutation in blaOXA193; aminoglycosides (1.7%), acquisition of ant(6)-Ia and aph(3')-III; chloramphenicol (0.9%), acquisition of cat. The acquired resistance genes tet(O), ant(6)-Ia, aph(3')-III, and cat were located on pTet family plasmids. Furthermore, three pTet family plasmids formed larger plasmids that incorporated additional genes such as the type IV secretion system. Sequence type 4526 (ST4526; 10.9%), which is reported only in Japan, was the most predominant, suggesting continued prevalence. This study reveals the sequences of the pTet family plasmids harbored by C. jejuni in Japan, which had been unclear, and the acquisition of the insertion sequences in a part of the pTet family plasmids. Because pTet family plasmids can be horizontally transmitted and are a major factor in acquired resistance in Campylobacter, the risk of spreading pTet that has acquired further resistance should be considered. IMPORTANCE Campylobacter jejuni is among the major causes of enteritis and diarrhea in humans in many countries. Drug-resistant Campylobacter is increasing in both developing and developed countries, and in particular, fluoroquinolone-resistant Campylobacter was one of the species included on the priority list of antibiotic-resistant bacteria. Campylobacter drug resistance surveillance is important and has been conducted worldwide. In this study, we performed whole-genome analysis of Campylobacter jejuni isolated from diarrhea patients at a hospital in Toyama, Japan. This revealed the continued prevalence of Campylobacter jejuni ST4526, which has been reported to be prevalent in Japan, and the acquisition of resistance and virulence factors in the pTet family plasmids. The diversity of pTet family plasmids, the major resistance transmission factor, is expected to potentially increase the risk of Campylobacter. The usefulness of whole-genome sequencing in Campylobacter surveillance was also demonstrated.
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Affiliation(s)
- Daichi Morita
- Department of Microbiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Hiroki Arai
- Department of Microbiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | | | | | - Takanori Kumagai
- Department of Microbiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Fumito Maruyama
- Section of Microbial Genomics and Ecology, The IDEC Institute, Hiroshima University, Hiroshima, Japan
| | - Teruo Kuroda
- Department of Microbiology, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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Genomic Insights into the Increased Occurrence of Campylobacteriosis Caused by Antimicrobial-Resistant Campylobacter coli. mBio 2022; 13:e0283522. [PMID: 36472434 PMCID: PMC9765411 DOI: 10.1128/mbio.02835-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Campylobacter is the leading bacterial cause of diarrheal illnesses worldwide. Campylobacter jejuni and C. coli are the most common species accounting for campylobacteriosis. Although the proportion of campylobacteriosis caused by C. coli is increasing rapidly in China, the underlying mechanisms of this emergence remain unclear. In this study, we analyzed the whole-genome sequences and associated environments of 1,195 C. coli isolates with human, poultry, or porcine origins from 1980 to 2021. C. coli isolates of human origin were closely related to those from poultry, suggesting that poultry was the main source of C. coli infection in humans. Analysis of antimicrobial resistance determinants indicated that the prevalence of multidrug-resistant C. coli has increased dramatically since the 2010s, coinciding with the shift in abundance from C. jejuni to C. coli in Chinese poultry. Compared with C. jejuni, drug-resistant C. coli strains were better adapted and showed increased proliferation in the poultry production environment, where multiple antimicrobial agents were frequently used. This study provides an empirical basis for the molecular mechanisms that have enabled C. coli to become the dominant Campylobacter species in poultry; we also emphasize the importance of poultry products as sources of campylobacteriosis caused by C. coli in human patients. IMPORTANCE The proportion of campylobacteriosis caused by C. coli is increasing rapidly in China. Coincidentally, the dominant species of Campylobacter occurring in poultry products has shifted from C. jejuni to C. coli. Here, we analyzed the whole-genome sequences of 1,195 C. coli isolates from different origins. The phylogenetic relationship among C. coli isolates suggests that poultry was the main source of C. coli infection in humans. Further analysis indicated that antimicrobial resistance in C. coli strains has increased dramatically since the 2010s, which could facilitate their adaptation in the poultry production environment, where multiple antimicrobial agents are frequently used. Thus, our findings suggest that the judicious use of antimicrobial agents could mitigate the emergence of multidrug-resistant C. coli strains and enhance clinical outcomes by restoring drug sensitivity in Campylobacter.
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Tsiklauri R, Gabashvili E, Kobakhidze S, Tabatadze L, Bobokhidze E, Dadiani K, Koulouris S, Kotetishvili M. In-silico analyses provide strong statistical evidence for intra-species recombination events of the gyrA and CmeABC operon loci contributing to the continued emergence of resistance to fluoroquinolones in natural populations of Campylobacter jejuni. J Glob Antimicrob Resist 2022; 31:22-31. [PMID: 35985623 DOI: 10.1016/j.jgar.2022.08.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 08/11/2022] [Accepted: 08/12/2022] [Indexed: 12/30/2022] Open
Abstract
OBJECTIVES The continued emergence of Campylobacter jejuni strains resistant to fluoroquinolones (FQs) has posed a significant threat to global public health, leading frequently to undesirable outcomes of human campylobacteriosis treatment. The molecular genetic mechanisms contributing to the increased retention of resistance to FQs in natural populations of this species, especially in antibiotic-free environments, are not clearly understood. This study aimed to determine whether genetic recombination could be such a mechanism. METHODS We applied a large array of algorithms, imbedded in the SplitsTree and RDP4 software packages, to analyse the DNA sequences of the chromosomal loci, including the gyrA gene and the CmeABC operon, to identify events of their genetic recombination between C. jejuni strains. RESULTS The SplitsTree analyses of the above genetic loci resulted in several parallelograms with the bootstrap values being in a range of 94.7 to 100, with the high fit estimates being 99.3 to 100. These analyses were further strongly supported by the Phi test results (P ≤ 0.02715) and the RDP4-generated statistics (P ≤ 0.04005). The recombined chromosomal regions, along with the gyrA gene and CmeABC operon loci, were also found to contain the genetic loci that included, but were not limited to, the genes encoding for phosphoribosyltransferase, lipoprotein, outer membrane motility protein, and radical SAM domain protein. CONCLUSION These findings strongly suggest that the genetic recombination of the chromosomal regions involving gyrA, CmeABC, and their adjacent loci may be an additional mechanism underlying the constant emergence of epidemiologically successful FQ-resistant strains in natural populations of C. jejuni.
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Affiliation(s)
- Rusudan Tsiklauri
- Faculty of Medicine, Iv. Javakhishvili Tbilisi State University, Tbilisi, Georgia
| | - Ekaterine Gabashvili
- Bioinformatics Core, Scientific-Research Center of Agriculture, Tbilisi, Georgia
| | - Saba Kobakhidze
- Division of Risk Assessment, Scientific-Research Center of Agriculture, Tbilisi, Georgia
| | - Leila Tabatadze
- Division of Risk Assessment, Scientific-Research Center of Agriculture, Tbilisi, Georgia
| | - Ekaterine Bobokhidze
- Division of Risk Assessment, Scientific-Research Center of Agriculture, Tbilisi, Georgia
| | - Ketevan Dadiani
- Faculty of Medicine, Iv. Javakhishvili Tbilisi State University, Tbilisi, Georgia; G. Natadze Scientific-Research Institute of Sanitation, Hygiene and Medical Ecology, Tbilisi, Georgia
| | - Stylianos Koulouris
- European Commission, Directorate General for Health and Food Safety, Bruxelles/Brussel, Belgium
| | - Mamuka Kotetishvili
- G. Natadze Scientific-Research Institute of Sanitation, Hygiene and Medical Ecology, Tbilisi, Georgia; School of Science and Technology, Scientific Research Institute of the University of Georgia, Tbilisi, Georgia.
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Park M, Kim J, Feinstein J, Lang KS, Ryu S, Jeon B. Development of Fluoroquinolone Resistance through Antibiotic Tolerance in Campylobacter jejuni. Microbiol Spectr 2022; 10:e0166722. [PMID: 36066254 PMCID: PMC9602944 DOI: 10.1128/spectrum.01667-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 08/18/2022] [Indexed: 12/31/2022] Open
Abstract
Antibiotic tolerance not only enables bacteria to survive acute antibiotic exposures but also provides bacteria with a window of time in which to develop antibiotic resistance. The increasing prevalence of Campylobacter jejuni isolates resistant to clinically important antibiotics, particularly fluoroquinolones (FQs), is a global public health concern. Currently, little is known about antibiotic tolerance and its effects on resistance development in C. jejuni. Here, we show that exposure to ciprofloxacin or tetracycline at concentrations 10 and 100 times higher than the MIC induces antibiotic tolerance in C. jejuni, whereas gentamicin or erythromycin treatment causes cell death. Interestingly, FQ resistance rapidly develops in C. jejuni after tolerance induction by ciprofloxacin and tetracycline. Furthermore, after tolerance is induced, alkyl hydroperoxide reductase (AhpC) plays a critical role in reducing FQ resistance development by alleviating oxidative stress. Together, these results demonstrate that exposure of C. jejuni to antibiotics can induce antibiotic tolerance and that FQ-resistant (FQR) C. jejuni clones rapidly emerge after tolerance induction. This study elucidates the mechanisms underlying the high prevalence of FQR C. jejuni and provides insights into the effects of antibiotic tolerance on resistance development. IMPORTANCE Antibiotic tolerance compromises the efficacy of antibiotic treatment by extending bacterial survival and facilitating the development of mutations associated with antibiotic resistance. Despite growing public health concerns about antibiotic resistance in C. jejuni, antibiotic tolerance has not yet been investigated in this important zoonotic pathogen. Here, our results show that exposure of C. jejuni to ciprofloxacin or tetracycline leads to antibiotic tolerance development, which subsequently facilitates the emergence of FQR C. jejuni. Importantly, these antibiotics are commonly used in animal agriculture. Moreover, our study suggests that the use of non-FQ drugs in animal agriculture promotes FQ resistance development, which is crucial because antibiotic-resistant C. jejuni is primarily transmitted from animals to humans. Overall, these findings increase our understanding of the mechanisms of resistance development through the induction of antibiotic tolerance.
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Affiliation(s)
- Myungseo Park
- Division of Environmental Health Sciences, School of Public Health, University of Minnesota, Saint Paul, Minnesota, USA
| | - Jinshil Kim
- Department of Food and Animal Biotechnology, Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea
- Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea
- Center for Food and Bioconvergence, Seoul National University, Seoul, Republic of Korea
| | - Jill Feinstein
- Division of Environmental Health Sciences, School of Public Health, University of Minnesota, Saint Paul, Minnesota, USA
| | - Kevin S. Lang
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, Minnesota, USA
| | - Sangryeol Ryu
- Department of Food and Animal Biotechnology, Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea
- Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea
- Center for Food and Bioconvergence, Seoul National University, Seoul, Republic of Korea
| | - Byeonghwa Jeon
- Division of Environmental Health Sciences, School of Public Health, University of Minnesota, Saint Paul, Minnesota, USA
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Murawska M, Sypecka M, Bartosik J, Kwiecień E, Rzewuska M, Sałamaszyńska-Guz A. Should We Consider Them as a Threat? Antimicrobial Resistance, Virulence Potential and Genetic Diversity of Campylobacter spp. Isolated from Varsovian Dogs. Antibiotics (Basel) 2022; 11:antibiotics11070964. [PMID: 35884218 PMCID: PMC9311969 DOI: 10.3390/antibiotics11070964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 07/14/2022] [Accepted: 07/15/2022] [Indexed: 12/10/2022] Open
Abstract
Campylobacteriosis seems to be a growing problem worldwide. Apart from the most common sources of numerous Campylobacter species, such as poultry and other farm animals, dogs may be an underrated reservoir of this pathogen. Our goal was to establish the frequency of occurrence, antimicrobial resistance, and detection of chosen virulence factor genes in genomes of canine Campylobacter isolates. Campylobacter isolates frequency in dogs from shelters, and private origin was 13%. All of the tested virulence factor genes were found in 28 of 31 isolates. We determined high resistance levels to the ciprofloxacin and ampicillin and moderate tetracycline resistance. For C. jejuni shelter isolates, genetic diversity was also determined using PFGE. Our results indicate that dogs may be the reservoir of potentially diverse, potentially virulent, and antimicrobial-resistant Campylobacter strains.
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Affiliation(s)
- Małgorzata Murawska
- Division of Microbiology, Department of Preclinical Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences, Ciszewskiego 8, 02-786 Warsaw, Poland; (E.K.); (M.R.)
- Correspondence: (M.M.); (A.S.-G.)
| | - Monika Sypecka
- Translational Platform for Regenerative Medicine, Mossakowski Medical Research Institute, Polish Academy of Sciences, Pawińskiego 5, 02-106 Warsaw, Poland;
| | - Justyna Bartosik
- Division of Parasitology and Invasive Diseases, Department of Preclinical Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences, Ciszewskiego 8, 02-786 Warsaw, Poland;
| | - Ewelina Kwiecień
- Division of Microbiology, Department of Preclinical Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences, Ciszewskiego 8, 02-786 Warsaw, Poland; (E.K.); (M.R.)
| | - Magdalena Rzewuska
- Division of Microbiology, Department of Preclinical Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences, Ciszewskiego 8, 02-786 Warsaw, Poland; (E.K.); (M.R.)
| | - Agnieszka Sałamaszyńska-Guz
- Division of Microbiology, Department of Preclinical Sciences, Institute of Veterinary Medicine, Warsaw University of Life Sciences, Ciszewskiego 8, 02-786 Warsaw, Poland; (E.K.); (M.R.)
- Correspondence: (M.M.); (A.S.-G.)
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Genome sequence of a multidrug-resistant Campylobacter coli strain isolated from a newborn with severe diarrhea in Lebanon. Folia Microbiol (Praha) 2022; 67:319-328. [PMID: 34997523 DOI: 10.1007/s12223-021-00921-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 09/18/2021] [Indexed: 11/04/2022]
Abstract
A multidrug-resistant (MDR) Campylobacter coli (C. coli) strain was isolated from a 2-month-old newborn who suffered from severe diarrhea in Lebanon. Here, whole-genome sequencing (WGS) analysis was deployed to determine the genetic basis of antimicrobial resistance and virulence in the C. coli isolate and to identify its epidemiological background (sequence type). The identity of the isolate was confirmed using API® Campy, MALDI-TOF, and 16S rRNA gene sequencing analysis. The antimicrobial susceptibility phenotype was determined using the disk diffusion assay. Our analysis showed that resistance to macrolide and quinolone was potentially associated with the presence of multiple point mutations in antibiotic targets on the chromosomal DNA. Furthermore, tetracycline and aminoglycoside resistance were encoded by genes on a pTet plasmid. The blaOXA-61, which is associated with beta-lactam resistance, was also detected in the C. coli genome. A set of 30 genes associated with the virulence in C. coli was detected using WGS analysis. MLST analysis classified the isolate as belonging to a new sequence type (ST-9588), a member of ST-828 complex which is mainly associated with humans and chickens. Taking together, this study provides the first WGS analysis of Campylobacter isolated from Lebanon. The detection of a variety of AMR and virulence determinants strongly emphasizes the need for studying the burden of Campylobacter in Lebanon and the Middle East and North Africa (MENA) region, where information on campylobacteriosis is scant.
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Mouftah SF, Cobo-Díaz JF, Álvarez-Ordóñez A, Elserafy M, Saif NA, Sadat A, El-Shibiny A, Elhadidy M. High-throughput sequencing reveals genetic determinants associated with antibiotic resistance in Campylobacter spp. from farm-to-fork. PLoS One 2021; 16:e0253797. [PMID: 34166472 PMCID: PMC8224912 DOI: 10.1371/journal.pone.0253797] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 06/12/2021] [Indexed: 11/18/2022] Open
Abstract
Campylobacter species are one of the most common causative agents of gastroenteritis worldwide. Resistance against quinolone and macrolide antimicrobials, the most commonly used therapeutic options, poses a serious risk for campylobacteriosis treatment. Owing to whole genome sequencing advancements for rapid detection of antimicrobial resistance mechanisms, phenotypic and genotypic resistance trends along the "farm-to-fork" continuum can be determined. Here, we examined the resistance trends in 111 Campylobacter isolates (90 C. jejuni and 21 C. coli) recovered from clinical samples, commercial broiler carcasses and dairy products in Cairo, Egypt. Multidrug resistance (MDR) was observed in 10% of the isolates, mostly from C. coli. The prevalence of MDR was the highest in isolates collected from broiler carcasses (13.3%), followed by clinical isolates (10.5%), and finally isolates from dairy products (4%). The highest proportion of antimicrobial resistance in both species was against quinolones (ciprofloxacin and/or nalidixic acid) (68.4%), followed by tetracycline (51.3%), then erythromycin (12.6%) and aminoglycosides (streptomycin and/or gentamicin) (5.4%). Similar resistance rates were observed for quinolones, tetracycline, and erythromycin among isolates recovered from broiler carcasses and clinical samples highlighting the contribution of food of animal sources to human illness. Significant associations between phenotypic resistance and putative gene mutations was observed, with a high prevalence of the gyrA T86I substitution among quinolone resistant isolates, tet(O), tet(W), and tet(32) among tetracycline resistant isolates, and 23S rRNA A2075G and A2074T mutations among erythromycin resistant isolates. Emergence of resistance was attributed to the dissemination of resistance genes among various lineages, with the dominance of distinctive clones. For example, sub-lineages of CC828 in C. coli and CC21 in C. jejuni and the genetically related clonal complexes 'CC206 and CC48' and 'CC464, CC353, CC354, CC574', respectively, propagated across different niches sharing semi-homogenous resistance patterns.
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Affiliation(s)
- Shaimaa F. Mouftah
- Biomedical Sciences Program, University of Science and Technology, Zewail City of Science and Technology, Giza, Egypt
| | - José F. Cobo-Díaz
- Department of Food Hygiene and Technology and Institute of Food Science and Technology, Universidad de León, León, Spain
| | - Avelino Álvarez-Ordóñez
- Department of Food Hygiene and Technology and Institute of Food Science and Technology, Universidad de León, León, Spain
| | - Menattallah Elserafy
- Biomedical Sciences Program, University of Science and Technology, Zewail City of Science and Technology, Giza, Egypt
- Center for Genomics, Helmy Institute for Medical Sciences, Zewail City of Science and Technology, Giza, Egypt
| | - Nehal A. Saif
- Biomedical Sciences Program, University of Science and Technology, Zewail City of Science and Technology, Giza, Egypt
| | - Asmaa Sadat
- Department of Bacteriology, Mycology and Immunology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
| | - Ayman El-Shibiny
- Biomedical Sciences Program, University of Science and Technology, Zewail City of Science and Technology, Giza, Egypt
- Faculty of Environmental Agricultural Sciences, Arish University, Arish, Egypt
| | - Mohamed Elhadidy
- Biomedical Sciences Program, University of Science and Technology, Zewail City of Science and Technology, Giza, Egypt
- Department of Bacteriology, Mycology and Immunology, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
- * E-mail:
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11
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Laconi A, Drigo I, Palmieri N, Carraro L, Tonon E, Franch R, Bano L, Piccirillo A. Genomic analysis of extra-intestinal Campylobacter jejuni and Campylobacter coli isolated from commercial chickens. Vet Microbiol 2021; 259:109161. [PMID: 34214907 DOI: 10.1016/j.vetmic.2021.109161] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Accepted: 06/15/2021] [Indexed: 10/21/2022]
Abstract
Campylobacter jejuni and Campylobacter coli have commonly been considered harmless commensal inhabitants of the chicken gut; however, these Campylobacter spp. are known to be able to multiply in the gut and invade other tissues, negatively affecting host health and performance. In this study, fourteen Campylobacter spp. were isolated from chickens showing foci of necrosis on the liver surface resembling lesions observed in cases of avian vibrionic hepatitis/spotty liver disease. The whole genome sequences of the fourteen isolates were analysed and their virulomes compared to those of Campylobacter reference sequences, aiming to investigate the possible association between virulence genes and the observed pathological lesions. Nine C. jejuni and five C. coli were studied. These Campylobacter shared twelve virulence factors with other isolates originated from chicken livers and hosted a higher number of virulence-associated genes in comparison to the reference genomes, including genes encoding for factors involved in adherence to and invasion of the intestinal epithelial cells. Our findings seem to point out that these twelve common virulence-associated genes, together with the presence of a high number of virulence factors involved in adherence, invasion and motility, might be responsible for the extra-intestinal spread of our isolates and the colonization of parenchymatous tissues, possibly causing the pathological lesions observed.
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Affiliation(s)
- Andrea Laconi
- Department of Comparative Biomedicine and Food Science, University of Padua, Legnaro (PD), 35020, Italy
| | - Ilenia Drigo
- Veterinary Diagnostic Laboratory, Istituto Zooprofilattico Sperimentale delle Venezie, 31020 Villorba (TV), Italy
| | - Nicola Palmieri
- University Clinic for Poultry and Fish Medicine, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine, Vienna, 1210, Austria
| | - Lisa Carraro
- Department of Comparative Biomedicine and Food Science, University of Padua, Legnaro (PD), 35020, Italy
| | - Elena Tonon
- Veterinary Diagnostic Laboratory, Istituto Zooprofilattico Sperimentale delle Venezie, 31020 Villorba (TV), Italy
| | - Raffaela Franch
- Department of Comparative Biomedicine and Food Science, University of Padua, Legnaro (PD), 35020, Italy
| | - Luca Bano
- Veterinary Diagnostic Laboratory, Istituto Zooprofilattico Sperimentale delle Venezie, 31020 Villorba (TV), Italy
| | - Alessandra Piccirillo
- Department of Comparative Biomedicine and Food Science, University of Padua, Legnaro (PD), 35020, Italy.
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12
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Adiguzel MC, Goulart DB, Wu Z, Pang J, Cengiz S, Zhang Q, Sahin O. Distribution of CRISPR Types in Fluoroquinolone-Resistant Campylobacter jejuni Isolates. Pathogens 2021; 10:345. [PMID: 33809410 PMCID: PMC8000906 DOI: 10.3390/pathogens10030345] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 03/10/2021] [Accepted: 03/13/2021] [Indexed: 12/20/2022] Open
Abstract
To aid development of phage therapy against Campylobacter, we investigated the distribution of the clustered regularly interspaced short palindromic repeats (CRISPR) systems in fluoroquinolone (FQ)-resistant Campylobacter jejuni. A total of 100 FQ-resistant C. jejuni strains from different sources were analyzed by PCR and DNA sequencing to determine resistance-conferring mutation in the gyrA gene and the presence of various CRISPR systems. All but one isolate harbored 1-5 point mutations in gyrA, and the most common mutation was the Thr86Ile change. Ninety-five isolates were positive with the CRISPR PCR, and spacer sequences were found in 86 of them. Among the 292 spacer sequences identified in this study, 204 shared 93-100% nucleotide homology to Campylobacter phage D10, 44 showed 100% homology to Campylobacter phage CP39, and 3 had 100% homology with Campylobacter phage CJIE4-5. The remaining 41 spacer sequences did not match with any phages in the database. Based on the results, it was inferred that the FQ-resistant C. jejuni isolates analyzed in this study were potentially resistant to Campylobacter phages D10, CP39, and CJIE4-5 as well as some unidentified phages. These phages should be excluded from cocktails of phages that may be utilized to treat FQ-resistant Campylobacter.
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Affiliation(s)
- Mehmet Cemal Adiguzel
- Department of Microbiology, College of Veterinary Medicine, Ataturk University, Erzurum 25240, Turkey; (M.C.A.); (S.C.)
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA; (D.B.G.); (Z.W.); (J.P.); (Q.Z.)
| | - Debora Brito Goulart
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA; (D.B.G.); (Z.W.); (J.P.); (Q.Z.)
| | - Zuowei Wu
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA; (D.B.G.); (Z.W.); (J.P.); (Q.Z.)
| | - Jinji Pang
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA; (D.B.G.); (Z.W.); (J.P.); (Q.Z.)
| | - Seyda Cengiz
- Department of Microbiology, College of Veterinary Medicine, Ataturk University, Erzurum 25240, Turkey; (M.C.A.); (S.C.)
| | - Qijing Zhang
- Department of Veterinary Microbiology and Preventive Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA; (D.B.G.); (Z.W.); (J.P.); (Q.Z.)
| | - Orhan Sahin
- Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, IA 50011, USA
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13
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Olkkola S, Rossi M, Jaakkonen A, Simola M, Tikkanen J, Hakkinen M, Tuominen P, Huitu O, Niemimaa J, Henttonen H, Kivistö R. Host-Dependent Clustering of Campylobacter Strains From Small Mammals in Finland. Front Microbiol 2021; 11:621490. [PMID: 33584588 PMCID: PMC7873845 DOI: 10.3389/fmicb.2020.621490] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 12/17/2020] [Indexed: 02/02/2023] Open
Abstract
Small mammals are known to carry Campylobacter spp.; however, little is known about the genotypes and their role in human infections. We studied intestinal content from small wild mammals collected in their natural habitats in Finland in 2010-2017, and in close proximity to 40 pig or cattle farms in 2017. The animals were trapped using traditional Finnish metal snap traps. Campylobacter spp. were isolated from the intestinal content using direct plating on mCCDA. A total of 19% of the captured wild animals (n = 577) and 41% of the pooled farm samples (n = 227) were positive for C. jejuni, which was the only Campylobacter species identified. The highest prevalence occurred in yellow-necked mice (Apodemus flavicollis) and bank voles (Myodes glareolus) which carried Campylobacter spp. in 66.3 and 63.9% of the farm samples and 41.5 and 24.4% of individual animals trapped from natural habitats, respectively. Interestingly, all house mouse (Mus musculus) and shrew (Sorex spp.) samples were negative for Campylobacter spp. C. jejuni isolates (n = 145) were further characterized by whole-genome sequencing. Core genome multilocus sequence typing (cgMLST) clustering showed that mouse and vole strains were separated from the rest of the C. jejuni population (636 and 671 allelic differences, 94 and 99% of core loci, respectively). Very little or no alleles were shared with C. jejuni genomes described earlier from livestock or human isolates. FastANI results further indicated that C. jejuni strains from voles are likely to represent a new previously undescribed species or subspecies of Campylobacter. Core-genome phylogeny showed that there was no difference between isolates originating from the farm and wild captured animals. Instead, the phylogeny followed the host species-association. There was some evidence (one strain each) of livestock-associated C. jejuni occurring in a farm-caught A. flavicollis and a brown rat (Rattus norvegicus), indicating that although small mammals may not be the original reservoir of Campylobacter colonizing livestock, they may sporadically carry C. jejuni strains occurring mainly in livestock and be associated with disease in humans.
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Affiliation(s)
| | - Mirko Rossi
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
- European Food Safety Authority (EFSA), Parma, Italy
| | | | | | | | | | | | - Otso Huitu
- Natural Resources Institute Finland (Luke), Helsinki, Finland
| | - Jukka Niemimaa
- Natural Resources Institute Finland (Luke), Helsinki, Finland
| | | | - Rauni Kivistö
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, Helsinki, Finland
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14
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Gahamanyi N, Song DG, Cha KH, Yoon KY, Mboera LE, Matee MI, Mutangana D, Amachawadi RG, Komba EV, Pan CH. Susceptibility of Campylobacter Strains to Selected Natural Products and Frontline Antibiotics. Antibiotics (Basel) 2020; 9:antibiotics9110790. [PMID: 33182474 PMCID: PMC7697650 DOI: 10.3390/antibiotics9110790] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 11/05/2020] [Accepted: 11/05/2020] [Indexed: 12/24/2022] Open
Abstract
Campylobacter species have developed resistance to existing antibiotics. The development of alternative therapies is, therefore, a necessity. This study evaluates the susceptibility of Campylobacter strains to selected natural products (NPs) and frontline antibiotics. Two C. jejuni strains (ATCC® 33560TM and MT947450) and two C. coli strains (ATCC® 33559TM and MT947451) were used. The antimicrobial potential of the NPs, including plant extracts, essential oils, and pure phytochemicals, was evaluated by broth microdilution. The growth was measured by spectrophotometry and iodonitrotetrazolium chloride. Antibiotic resistance genes (tet(O) and gyrA) were characterized at the molecular level. The minimum inhibitory concentrations (MICs) and the minimum bactericidal concentrations (MBCs) ranged from 25 to 1600 µg/mL. Cinnamon oil, (E)-Cinnamaldehyde, clove oil, eugenol, and baicalein had the lowest MIC and MBC values (25-100 µg/mL). MT947450 and MT947451 were sensitive to erythromycin and gentamicin but resistant to quinolones and tetracycline. Mutations in gyrA and tet(O) genes from resistant strains were confirmed by sequencing. The findings show that NPs are effective against drug-sensitive and drug-resistant Campylobacter strains. The resistance to antibiotics was confirmed at phenotypic and genotypic levels. This merits further studies to decipher the action mechanisms and synergistic activities of NPs.
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Affiliation(s)
- Noel Gahamanyi
- Natural Product Informatics Research Center, KIST Gangneung Institute of Natural Products, Gangneung 25451, Korea; (N.G.); (D.-G.S.); (K.H.C.); (K.-Y.Y.)
- SACIDS Foundation for One Health, College of Veterinary Medicine and Biomedical Sciences, Sokoine University of Agriculture, Chuo Kikuu, Morogoro P.O. Box 3015, Tanzania; (L.E.G.M.); (E.V.G.K.)
| | - Dae-Geun Song
- Natural Product Informatics Research Center, KIST Gangneung Institute of Natural Products, Gangneung 25451, Korea; (N.G.); (D.-G.S.); (K.H.C.); (K.-Y.Y.)
| | - Kwang Hyun Cha
- Natural Product Informatics Research Center, KIST Gangneung Institute of Natural Products, Gangneung 25451, Korea; (N.G.); (D.-G.S.); (K.H.C.); (K.-Y.Y.)
| | - Kye-Yoon Yoon
- Natural Product Informatics Research Center, KIST Gangneung Institute of Natural Products, Gangneung 25451, Korea; (N.G.); (D.-G.S.); (K.H.C.); (K.-Y.Y.)
| | - Leonard E.G. Mboera
- SACIDS Foundation for One Health, College of Veterinary Medicine and Biomedical Sciences, Sokoine University of Agriculture, Chuo Kikuu, Morogoro P.O. Box 3015, Tanzania; (L.E.G.M.); (E.V.G.K.)
| | - Mecky I. Matee
- School of Medicine, Muhimbili University of Health and Allied Sciences, Dar es Salaam P.O. Box 65001, Tanzania;
| | - Dieudonné Mutangana
- College of Science and Technology, University of Rwanda, Kigali P.O. Box 3900, Rwanda;
| | - Raghavendra G. Amachawadi
- Department of Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan, KS 66506-5606, USA;
| | - Erick V.G. Komba
- SACIDS Foundation for One Health, College of Veterinary Medicine and Biomedical Sciences, Sokoine University of Agriculture, Chuo Kikuu, Morogoro P.O. Box 3015, Tanzania; (L.E.G.M.); (E.V.G.K.)
| | - Cheol-Ho Pan
- Natural Product Informatics Research Center, KIST Gangneung Institute of Natural Products, Gangneung 25451, Korea; (N.G.); (D.-G.S.); (K.H.C.); (K.-Y.Y.)
- Division of Bio-Medical Science and Technology, KIST School, Korea University of Science and Technology, Seoul 02792, Korea
- Correspondence:
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15
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Rivera-Mendoza D, Martínez-Flores I, Santamaría RI, Lozano L, Bustamante VH, Pérez-Morales D. Genomic Analysis Reveals the Genetic Determinants Associated With Antibiotic Resistance in the Zoonotic Pathogen Campylobacter spp. Distributed Globally. Front Microbiol 2020; 11:513070. [PMID: 33042043 PMCID: PMC7518152 DOI: 10.3389/fmicb.2020.513070] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 08/21/2020] [Indexed: 11/17/2022] Open
Abstract
The genus Campylobacter groups 32 Gram-negative bacteria species, several being zoonotic pathogens and a major cause of human gastroenteritis worldwide. Antibiotic resistant Campylobacter is considered by the World Health Organization as a high priority pathogen for research and development of new antibiotics. Genetic elements related to antibiotic resistance in the classical C. coli and C. jejuni species, which infect humans and livestock, have been analyzed in numerous studies, mainly focused on local geographical areas. However, the presence of these resistance determinants in other Campylobacter species, as well as in C. jejuni and C. coli strains distributed globally, remains poorly studied. In this work, we analyzed the occurrence and distribution of antibiotic resistance factors in 237 Campylobacter closed genomes available in NCBI, obtained from isolates collected worldwide, in different dates, from distinct hosts and comprising 22 Campylobacter species. Our data revealed 18 distinct genetic determinants, genes or point mutations in housekeeping genes, associated with resistance to antibiotics from aminoglycosides, β-lactams, fluoroquinolones, lincosamides, macrolides, phenicols or tetracyclines classes, which are differentially distributed among the Campylobacter species tested, on chromosomes or plasmids. Three resistance determinants, the blaOXA–493 and blaOXA–576 genes, putatively related to β-lactams resistance, as well as the lnu(AN2) gene, putatively related to lincosamides resistance, had not been reported in Campylobacter; thus, they represent novel determinants for antibiotic resistance in Campylobacter spp., which expands the insight on the Campylobacter resistome. Interestingly, we found that some of the genetic determinants associated with antibiotic resistance are Campylobacter species-specific; e.g., the blaOXA–493 gene and the T86V mutation in gyrA were found only in the C. lari group, whereas genes associated with aminoglycosides resistance were found only in C. jejuni and C. coli. Additional analyses revealed how are distributed the resistance and multidrug resistance Campylobacter genotypes assessed, with respect to hosts, geographical locations, and collection dates. Thus, our findings further expand the knowledge on the factors that can determine or favor the antibiotic resistance in Campylobacter species distributed globally, which can be useful to choose a suitable antibiotic treatment to control the zoonotic infections by these bacteria.
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Affiliation(s)
- Daniel Rivera-Mendoza
- Programa de Maestría en Biotecnología, Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Cuernavaca, Mexico
| | - Irma Martínez-Flores
- Programa de Genómica Evolutiva, Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Cuernavaca, Mexico
| | - Rosa I Santamaría
- Programa de Genómica Evolutiva, Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Cuernavaca, Mexico
| | - Luis Lozano
- Programa de Genómica Evolutiva, Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Cuernavaca, Mexico
| | - Víctor H Bustamante
- Departamento de Microbiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Mexico
| | - Deyanira Pérez-Morales
- CONACYT-Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Cuernavaca, Mexico
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16
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Gitahi N, Gathura PB, Gicheru MM, Wandia BM, Nordin A. Multidrug-resistant Campylobacter jejuni, Campylobacter coli and Campylobacter lari isolated from asymptomatic school-going children in Kibera slum, Kenya. F1000Res 2020; 9:92. [PMID: 37363437 PMCID: PMC10285328 DOI: 10.12688/f1000research.21299.2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/25/2020] [Indexed: 10/10/2023] Open
Abstract
Background: The objective of this study was to determine the prevalence of thermophilic Campylobacter spp. in asymptomatic school-going children and establish the antibiotic resistance patterns of the isolates towards the drugs used to treat campylobacteriosis, including macrolides, quinolones and tetracycline. Campylobacter spp. are a leading cause of enteric illness and have only recently shown resistance to antibiotics. Methods: This study isolated Campylobacter spp., including Campylobacter coli, Campylobacter jejuni and Campylobacter lari, in stool samples from asymptomatic school-going children in one of the biggest urban slums in Kenya. The disc diffusion method using EUCAST breakpoints was used to identify antibiotic-resistant isolates, which were further tested for genes encoding for tetracycline resistance using primer-specific polymerase chain reaction. Results: In total, 580 stool samples were collected from 11 primary schools considering both gender and age. Subjecting 294 biochemically characterized Campylobacter spp. isolates to genus-specific PCR, 106 (18.27% of stool samples) isolates were confirmed Campylobacter spp. Out of the 106 isolates, 28 (4.83%) were Campylobacter coli, 44 (7.58%) were Campylobacter jejuni while 11 (1.89%) were Campylobacter lari. Campylobacter jejuni had the highest number of isolates that were multi-drug resistant, with 26 out of the 28 tested isolates being resistant to ciprofloxacin (5 mg), nalidixic acid (30 mg), tetracycline (30 mg) and erythromycin (15 mg). Conclusions: In conclusion, asymptomatic school going children in the study area were found to be carriers of multidrug resistant Campylobacter coli, Campylobacter jejuni and Campylobacter lari at 84%. A one-health approach, which considers overlaps in environment, animals and human ecosystems, is recommended in addressing multidrug resistane in Campylobacter, since animals are the main reservoirs and environmental contamination is evident.
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Affiliation(s)
- Nduhiu Gitahi
- Department of Public Health, Pharmacology & Toxicology, University of Nairobi, Nairobi, 00100, Kenya
| | - Peter B. Gathura
- Department of Public Health, Pharmacology & Toxicology, University of Nairobi, Nairobi, 00100, Kenya
| | - Michael M. Gicheru
- Department of Zoological Sciences, Kenyatta University, Nairobi, 00100, Kenya
| | - Beautice M. Wandia
- Department of Public Health, Pharmacology & Toxicology, University of Nairobi, Nairobi, 00100, Kenya
| | - Annika Nordin
- Department of Energy and Technology, Swedish University of Agricultural Science, Uppsala, Sweden
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17
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Barker CR, Painset A, Swift C, Jenkins C, Godbole G, Maiden MCJ, Dallman TJ. Microevolution of Campylobacter jejuni during long-term infection in an immunocompromised host. Sci Rep 2020; 10:10109. [PMID: 32572150 PMCID: PMC7308304 DOI: 10.1038/s41598-020-66771-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Accepted: 05/18/2020] [Indexed: 02/04/2023] Open
Abstract
Campylobacteriosis typically manifests as a short-lived, self-limiting gastrointestinal infection in humans, however prolonged infection can be seen in cases with underlying immunodeficiency. Public Health England received 25 isolates of Campylobacter jejuni from an individual with combined variable immunodeficiency over a period of 15 years. All isolates were typed and archived at the time of receipt. Whole genome sequencing (WGS) and antimicrobial susceptibility testing were performed to examine the relatedness of the isolates and to investigate the changes in the genome that had taken place over the course of the infection. Genomic typing methods were compared to conventional phenotypic methods, and revealed that the infection was caused by a single, persistent strain of C. jejuni belonging to clonal complex ST-45, with evidence of adaptation and selection in the genome over the course of the infection. Genomic analysis of sequence variants associated with antimicrobial resistance identified the genetic background behind rRNA gene mutations causing variable levels of resistance to erythromycin. This application of WGS to examine a persistent case of campylobacteriosis provides insight into the mutations and selective pressures occurring over the course of an infection, some of which have important clinical relevance.
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Affiliation(s)
- Clare R Barker
- Department of Zoology, Peter Medawar Building, University of Oxford, Oxford, UK
- Gastrointestinal Bacteria Reference Unit, Public Health England, Colindale, London, UK
- NIHR Health Protection Research Unit in Gastrointestinal Infections, Liverpool, UK
| | - Anaïs Painset
- Gastrointestinal Bacteria Reference Unit, Public Health England, Colindale, London, UK
- NIHR Health Protection Research Unit in Gastrointestinal Infections, Liverpool, UK
| | - Craig Swift
- Gastrointestinal Bacteria Reference Unit, Public Health England, Colindale, London, UK
| | - Claire Jenkins
- Gastrointestinal Bacteria Reference Unit, Public Health England, Colindale, London, UK
- NIHR Health Protection Research Unit in Gastrointestinal Infections, Liverpool, UK
| | - Gauri Godbole
- Gastrointestinal Bacteria Reference Unit, Public Health England, Colindale, London, UK
| | - Martin C J Maiden
- Department of Zoology, Peter Medawar Building, University of Oxford, Oxford, UK
- NIHR Health Protection Research Unit in Gastrointestinal Infections, Liverpool, UK
| | - Timothy J Dallman
- Gastrointestinal Bacteria Reference Unit, Public Health England, Colindale, London, UK.
- NIHR Health Protection Research Unit in Gastrointestinal Infections, Liverpool, UK.
- Division of Infection and Immunity, The Roslin Institute and Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh, UK.
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18
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Lynch CT, Lynch H, Burke S, Hawkins K, Buttimer C, Mc Carthy C, Egan J, Whyte P, Bolton D, Coffey A, Lucey B. Antimicrobial Resistance Determinants Circulating among Thermophilic Campylobacter Isolates Recovered from Broilers in Ireland Over a One-Year Period. Antibiotics (Basel) 2020; 9:E308. [PMID: 32521746 PMCID: PMC7344827 DOI: 10.3390/antibiotics9060308] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 06/04/2020] [Accepted: 06/05/2020] [Indexed: 02/07/2023] Open
Abstract
Campylobacteriosis is the leading cause of human bacterial gastroenteritis, very often associated with poultry consumption. Thermophilic Campylobacter (Campylobacter jejuni and Campylobacter coli) isolates (n = 158) recovered from broiler neck skin and caecal contents in Ireland over a one-year period, resistant to at least one of three clinically relevant antimicrobial classes, were screened for resistance determinants. All ciprofloxacin-resistant isolates (n = 99) harboured the C257T nucleotide mutation (conferring the Thr-86-Ile substitution) in conjunction with other synonymous and nonsynonymous mutations, which may have epidemiological value. The A2075G nucleotide mutation and amino acid substitutions in L4 and L22 were detected in all erythromycin-resistant isolates (n = 5). The tetO gene was detected in 100% (n = 119) of tetracycline-resistant isolates and three of which were found to harbour the mosaic tetracycline resistance gene tetO/32/O. Two streptomycin-resistant C. jejuni isolates (isolated from the same flock) harboured ant(6)-Ib, located in a multidrug resistance genomic island, containing aminoglycoside, streptothricin (satA) and tetracycline resistance genes (truncated tetO and mosaic tetO/32/O). The ant(6)-Ie gene was identified in two streptomycin-resistant C. coli isolates. This study highlights the widespread acquisition of antimicrobial resistance determinants among chicken-associated Campylobacter isolates, through horizontal gene transfer or clonal expansion of resistant lineages. The stability of such resistance determinants is compounded by the fluidity of mobile genetic element.
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Affiliation(s)
- Caoimhe T. Lynch
- Department of Biological Sciences, Cork Institute of Technology, Bishopstown, T12 P928 Cork, Ireland; (C.T.L.); (S.B.); (K.H.); (C.M.C.); (A.C.)
| | - Helen Lynch
- NRL Campylobacter, Backweston Laboratory Complex, Young’s Cross, Celbridge, W23 X3PH Kildare, Ireland; (H.L.); (J.E.)
- School of Veterinary Medicine, University College Dublin, Belfield, D04 V1W8 Dublin 4, Ireland;
| | - Sarah Burke
- Department of Biological Sciences, Cork Institute of Technology, Bishopstown, T12 P928 Cork, Ireland; (C.T.L.); (S.B.); (K.H.); (C.M.C.); (A.C.)
| | - Kayleigh Hawkins
- Department of Biological Sciences, Cork Institute of Technology, Bishopstown, T12 P928 Cork, Ireland; (C.T.L.); (S.B.); (K.H.); (C.M.C.); (A.C.)
| | - Colin Buttimer
- APC Microbiome Ireland, University College Cork, T12 YT20 Cork, Ireland;
| | - Conor Mc Carthy
- Department of Biological Sciences, Cork Institute of Technology, Bishopstown, T12 P928 Cork, Ireland; (C.T.L.); (S.B.); (K.H.); (C.M.C.); (A.C.)
| | - John Egan
- NRL Campylobacter, Backweston Laboratory Complex, Young’s Cross, Celbridge, W23 X3PH Kildare, Ireland; (H.L.); (J.E.)
| | - Paul Whyte
- School of Veterinary Medicine, University College Dublin, Belfield, D04 V1W8 Dublin 4, Ireland;
| | - Declan Bolton
- Teagasc Food Research Centre, Ashtown, D15 DY05 Dublin 15, Ireland;
| | - Aidan Coffey
- Department of Biological Sciences, Cork Institute of Technology, Bishopstown, T12 P928 Cork, Ireland; (C.T.L.); (S.B.); (K.H.); (C.M.C.); (A.C.)
- APC Microbiome Ireland, University College Cork, T12 YT20 Cork, Ireland;
| | - Brigid Lucey
- Department of Biological Sciences, Cork Institute of Technology, Bishopstown, T12 P928 Cork, Ireland; (C.T.L.); (S.B.); (K.H.); (C.M.C.); (A.C.)
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19
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Hwang H, Isaacson RE, Singer RS. Comparison of relative expressions of genes involved in iron acquisition and regulation in fluoroquinolone-resistant and wild-type Campylobacter jejuni. Vet Microbiol 2020; 243:108615. [PMID: 32273001 DOI: 10.1016/j.vetmic.2020.108615] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 02/16/2020] [Accepted: 02/17/2020] [Indexed: 11/16/2022]
Abstract
Campylobacteriosis caused by C. jejuni is a serious yet common foodborne disease in the U.S. The prevalence of fluoroquinolone-resistant C. jejuni from poultry has continued to increase despite the withdrawal of fluoroquinolone use in the U.S. poultry industry in 2005. To date, no clear selective pressures that explain this effect have been documented. In this study, we investigated limited bioavailability of iron in poultry and enhanced iron uptake and regulation as potential indirect selective pressures conferring fitness advantages in fluoroquinolone-resistant C. jejuni compared to its susceptible wild-type counterpart. Five fluoroquinolone-susceptible C. jejuni isolates were selected from litter collected from commercial broiler farms. Using antibiotic selection, five fluoroquinolone-resistant strains were created. Relative expressions of six genes involved in iron acquisition and regulation were compared between the resistant and susceptible strains using RT-qPCR under normal and iron-limiting conditions. High variability in the relative gene expressions was observed among the strains, with only one resistant strain showing the consistent upregulation of the measured genes compared to the matching susceptible wild-type. Our results suggest that the hypothesis tested in the study may not be an adequate explanation of the molecular mechanism behind the enhanced fitness of fluoroquinolone-resistant C. jejuni compared to susceptible C. jejuni. This study highlights the need for a better understanding of the complex ecology and dynamics of fluoroquinolone resistance in C. jejuni in poultry environment and warrants an examination of fluoroquinolone-resistant C. jejuni strains recovered from the natural broiler chicken environment.
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Affiliation(s)
- Haejin Hwang
- Division of Environmental Health Sciences, School of Public Health, University of Minnesota, Minneapolis, MN, USA
| | - Richard E Isaacson
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN, USA
| | - Randall S Singer
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN, USA.
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20
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Igwaran A, Okoh AI. Human campylobacteriosis: A public health concern of global importance. Heliyon 2019; 5:e02814. [PMID: 31763476 PMCID: PMC6861584 DOI: 10.1016/j.heliyon.2019.e02814] [Citation(s) in RCA: 148] [Impact Index Per Article: 29.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 06/07/2019] [Accepted: 11/07/2019] [Indexed: 01/18/2023] Open
Abstract
Campylobacter species are among the leading cause of bacterial foodborne and waterborne infections. In addition, Campylobacter is one of the major causative agent of bacterial gastrointestinal infections and the rise in the incidence of Campylobacter infections have been reported worldwide. Also, the emergence of some Campylobacter species as one of the main causative agent of diarrhea and the propensity of these bacteria species to resist the actions of antimicrobial agents; position them as a serious threat to the public health. This paper reviews Campylobacter pathogenicity, infections, isolation and diagnosis, their reservoirs, transmission pathways, epidemiology of Campylobacter outbreaks, prevention and treatment option, antibiotics resistance and control of antibiotics use.
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Affiliation(s)
- Aboi Igwaran
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, 5700, South Africa
- Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Private Bag X1314, Alice, 5700, Eastern Cape, South Africa
| | - Anthony Ifeanyi Okoh
- SAMRC Microbial Water Quality Monitoring Centre, University of Fort Hare, Alice, 5700, South Africa
- Applied and Environmental Microbiology Research Group (AEMREG), Department of Biochemistry and Microbiology, University of Fort Hare, Private Bag X1314, Alice, 5700, Eastern Cape, South Africa
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21
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Abstract
Campylobacter is a major foodborne pathogen and has become increasingly resistant to clinically important antimicrobials. To cope with the selection pressure from antimicrobial use in both veterinary and human medicine, Campylobacter has developed multiple mechanisms for antibiotic resistance, including modification or mutation of antimicrobial targets, modification or inactivation of antibiotics, and reduced drug accumulation by drug efflux pumps. Some of these mechanisms confer resistance to a specific class of antimicrobials, while others give rise to multidrug resistance. Notably, new antibiotic resistance mechanisms continuously emerge in Campylobacter, and some examples include the recently discovered multidrug resistance genomic islands harboring multiple genes involved in the resistance to aminoglycosides and macrolides, a novel Cfr(C) conferring resistance to phenicols and other drugs, and a potent multidrug efflux pump CmeABC variant (RE-CmeABC) that shows a significantly enhanced function in multidrug resistance and is associated with exceedingly high-level resistance to fluoroquinolones. These newly emerged resistance mechanisms are horizontally transferable and greatly facilitate the adaptation of Campylobacter in the food-producing environments where antibiotics are frequently used. In this article, we will discuss how Campylobacter resists the action of various classes of antimicrobials, with an emphasis on newly discovered mechanisms.
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22
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Fluoroquinolone resistance in Campylobacter jejuni and Campylobacter coli from poultry and human samples assessed by PCR-restriction fragment length polymorphism assay. PLoS One 2018; 13:e0199974. [PMID: 29979715 PMCID: PMC6034818 DOI: 10.1371/journal.pone.0199974] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 06/17/2018] [Indexed: 11/19/2022] Open
Abstract
The objective of this study was to determine fluoroquinolone resistance in Campylobacter spp from poultry and human isolates. Forty-one Campylobacter jejuni isolates (30 of poultry origin and 11 of human origin) and 11 Campylobacter coli isolates (10 of human origin and 1 of poultry origin) were examined for ciprofloxacin, norfloxacin, and nalidixic acid resistance using the minimal inhibitory concentration (MIC) method. Thereafter, the isolates were analyzed by PCR-Restriction Fragment Length Polymorphism (RFLP) assay for detection of Thr-86 mutation. Finally, DNA sequencing was performed for confirmation of gyrA gene mutation. A complete correlation was observed between MICs, PCR-RFLP assay, and sequencing. The results revealed high quinolone resistance rates for C. jejuni (100%) and C. coli (100%) isolates obtained from poultry and moderate resistance for C. jejuni (9.1%) and C. coli (40%) samples of human origin. A mutation in codon 86 of the gyrA gene with a Thr-to-Ile substitution is reported to be the main cause of high resistance to quinolones. This mutation can be analyzed by PCR-RFLP assay, which has been proven to be a simple and fast method for the detection of fluoroquinolone resistance in Campylobacter spp.
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23
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Yang W, Zhang M, Zhou J, Pang L, Wang G, Hou F. The Molecular Mechanisms of Ciprofloxacin Resistance in Clinical Campylobacter jejuni and Their Genotyping Characteristics in Beijing, China. Foodborne Pathog Dis 2018; 14:386-392. [PMID: 28696791 DOI: 10.1089/fpd.2016.2223] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
We assessed the susceptibility of 182 Campylobacter jejuni isolates from patients with diarrhea to eight antibiotics and analyzed the molecular mechanisms of ciprofloxacin resistance as well as the genetic characteristics based on multilocus sequence typing (MLST). The C257T mutation was found on the quinolone resistance-determining region (QRDR) of the gyrA gene in all ciprofloxacin-resistant strains. Mutations on the QRDR of the gyrB gene were silent. A total of 74 strains had 7 inverted repeat (IR) (a 16-bp IR on the intergenic region between cmeR and cmeABC) mutation polymorphisms. Compared with strains without the IR mutations, strains with the IR mutations had higher resistance rates to ciprofloxacin (94.6% vs. 83.3%), nalidixic acid (94.6% vs. 83.3%), tetracycline (98.6% vs. 85.2%), doxycycline (91.9% vs. 71.3%), florfenicol (59.5% vs. 17.6%), chloramphenicol (25.7% vs. 4.6%), gentamicin (16.2% vs. 3.7%), and multidrug resistance than those without IR mutations (all p < 0.05). With C257T mutation alone, 89.9% strains with minimum inhibitory concentration (MIC) values focused on 16, 32, and 64 μg/mL, whereas strains with C257T mutation in combination with the IR mutations had a higher ciprofloxacin resistance level with 88.6% MIC values focused on 64, 128, and 512 μg/mL (p < 0.0001). The strains in this study showed a high genetic variability based on MLST with 117 sequence types (STs), 37 of which were novel. CC-21 was the most common clonal complex (CC) followed by CC-353 and CC-45. No association was found between STs and ciprofloxacin resistance. In conclusion, the C257T mutation on gyrA was the major mechanism for ciprofloxacin resistance, and the C257T mutation in combination with the IR mutations might result in more severe ciprofloxacin resistance to C. jejuni.
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Affiliation(s)
- Wanna Yang
- 1 Department of Infectious Diseases and the Center for Liver Diseases, Peking University First Hospital , Beijing, China
| | - Maojun Zhang
- 2 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 .,3 Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University , Hangzhou, Zhejiang, China
| | - Jiyuan Zhou
- 1 Department of Infectious Diseases and the Center for Liver Diseases, Peking University First Hospital , Beijing, China
| | - Lili Pang
- 1 Department of Infectious Diseases and the Center for Liver Diseases, Peking University First Hospital , Beijing, China
| | - Guiqiang Wang
- 1 Department of Infectious Diseases and the Center for Liver Diseases, Peking University First Hospital , Beijing, China .,3 Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University , Hangzhou, Zhejiang, China .,4 Department of Infectious Diseases, Peking University International Hospital , Beijing, China
| | - Fengqin Hou
- 1 Department of Infectious Diseases and the Center for Liver Diseases, Peking University First Hospital , Beijing, China .,4 Department of Infectious Diseases, Peking University International Hospital , Beijing, China
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24
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Mehla K, Ramana J. Molecular Dynamics Simulations of Quinolone Resistance-Associated T86I and P104S Mutations in Campylobacter jejunigyrA: Unraveling Structural Repercussions. Microb Drug Resist 2018; 24:232-243. [DOI: 10.1089/mdr.2017.0020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Kusum Mehla
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Solan, India
| | - Jayashree Ramana
- Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Solan, India
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25
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Woźniak-Biel A, Bugla-Płoskońska G, Kielsznia A, Korzekwa K, Tobiasz A, Korzeniowska-Kowal A, Wieliczko A. High Prevalence of Resistance to Fluoroquinolones and Tetracycline Campylobacter Spp. Isolated from Poultry in Poland. Microb Drug Resist 2018; 24:314-322. [PMID: 28628752 PMCID: PMC5905868 DOI: 10.1089/mdr.2016.0249] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Campylobacter spp. is a major cause of foodborne diseases in humans, particularly when transmitted by the handling or consumption of undercooked poultry meat. Most Campylobacter infections are self-limiting, but antimicrobial treatment (e.g., fluoroquinolones and macrolides) is necessary in severe or prolonged cases. The indiscriminate use of these drugs, both in clinical medicine and animal production, has a major impact on public health. The aim of the present study was to identify Campylobacter strains, isolated from turkey and broilers, using both PCR and the matrix-assisted laser desorption-ionization time-of-flight (MALDI-TOF) methods to reveal the accuracy of identification, as well to evaluate the antimicrobial and genetic resistance of the investigated strains. MALDI-TOF and PCR methods were used to show differences, if any, in the specificity of that test. In this study, MALDI-TOF mass spectrometry gave the same results as multiplex PCR, in all cases. The highest rate of resistance (i.e., 100% of turkey and broiler strains) was detected against ciprofloxacin, whereas 58.1% of turkey and 78.6% of broiler strains were resistant to tetracycline. Multidrug-resistant isolates were not found in the study. All ciprofloxacin-resistant strains had a mutation in the gyrA gene, at the Thr-86 position. The presence of the tetO gene was found in 71% of turkey and in 100% of broiler strains. All resistant to tetracycline strains included tetO gene. Additionally, in five turkey and three broiler strains, susceptible to tetracycline, tetO gene was present. These results indicate the high prevalence of Campylobacter strains, which are phenotypically and genetically resistant to fluoroquinolones and tetracycline.
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Affiliation(s)
- Anna Woźniak-Biel
- Department of Epizootiology with Clinic of Bird and Exotic Animals, Wroclaw University of Environmental and Life Sciences, Wrocław, Poland
| | - Gabriela Bugla-Płoskońska
- Department of Microbiology, Institute of Genetics and Microbiology, University of Wroclaw, Wrocław, Poland
| | - Alicja Kielsznia
- Department of Microbiology, Institute of Genetics and Microbiology, University of Wroclaw, Wrocław, Poland
| | - Kamila Korzekwa
- Department of Microbiology, Institute of Genetics and Microbiology, University of Wroclaw, Wrocław, Poland
| | - Anna Tobiasz
- Department of Immunology of Infectious Diseases, Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
| | - Agnieszka Korzeniowska-Kowal
- Department of Immunology of Infectious Diseases, Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland
| | - Alina Wieliczko
- Department of Epizootiology with Clinic of Bird and Exotic Animals, Wroclaw University of Environmental and Life Sciences, Wrocław, Poland
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26
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Sahin O, Shen Z, Zhang Q. Methods to Study Antimicrobial Resistance in Campylobacter jejuni. Methods Mol Biol 2018; 1512:29-42. [PMID: 27885596 DOI: 10.1007/978-1-4939-6536-6_4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Campylobacter jejuni is a leading bacterial cause of foodborne gastroenteritis worldwide and is increasingly resistant to clinically important antibiotics. Detection of antibiotic resistance in C. jejuni can be performed with both phenotypic and genotypic methods. In this chapter, we describe the most commonly used molecular biology methods for detection of resistance to clinically important antibiotics. These methods can be employed in both clinical and research settings to facilitate clinical therapy and to monitor the emergence and dissemination of antibiotic-resistant C. jejuni.
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Affiliation(s)
- Orhan Sahin
- Department of Veterinary Microbiology and Preventive Medicine, Iowa State University, 1116 Veterinary Medicine Complex, 1600 S. 16th Street, Ames, IA, 50011, USA.,Department of Veterinary Diagnostic and Production Animal Medicine, Iowa State University, 1116 Veterinary Medicine Complex, 1600 S. 16th Street, Ames, IA, 50011, USA
| | - Zhangqi Shen
- Department of Veterinary Microbiology and Preventive Medicine, Iowa State University, 1116 Veterinary Medicine Complex, 1600 S. 16th Street, Ames, IA, 50011, USA
| | - Qijing Zhang
- Department of Veterinary Microbiology and Preventive Medicine, Iowa State University, 1116 Veterinary Medicine Complex, 1600 S. 16th Street, Ames, IA, 50011, USA.
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27
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Kang M, Wei B, Choi SW, Cha SY, Jang HK. Molecular Characterization of Fluoroquinolone Resistance Mechanisms of Campylobacter Isolates from Duck Meats. J Food Prot 2017; 80:2056-2059. [PMID: 29148878 DOI: 10.4315/0362-028x.jfp-17-219] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The purpose of this study was to identify the molecular basis of quinolone resistance of Campylobacter isolates recovered from duck meats. Sixty-one isolates from duck meat samples were studied using sequence analysis of the gyrA gene, and PCR assays were used to identify the presence of the CmeABC efflux pump and its restored sensitivity in the presence of efflux-pump inhibitors. High-level resistance to nalidixic acid and ciprofloxacin was attributed to amino acid substitutions Thr-86-Ile in some isolates. The PCR assay confirmed the presence of the cmeB gene in 29 (47.5%) of the 61 Campylobacter isolates. Phenylalanine arginine β-naphthylamide reduced the MICs of ciprofloxacin and nalidixic acid in 16 (55.2%) and 26 (89.7%) isolates, respectively. The Thr-86-Ile substitution in the gyrA was the primary contributor to the high-level quinolone resistance in Campylobacter isolates from duck meats.
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Affiliation(s)
- Min Kang
- Department of Veterinary Infectious Diseases and Avian Diseases, College of Veterinary Medicine and Center for Poultry Diseases Control, Chonbuk National University, South Korea
| | - Bai Wei
- Department of Veterinary Infectious Diseases and Avian Diseases, College of Veterinary Medicine and Center for Poultry Diseases Control, Chonbuk National University, South Korea
| | - Sung-Woon Choi
- Department of Veterinary Infectious Diseases and Avian Diseases, College of Veterinary Medicine and Center for Poultry Diseases Control, Chonbuk National University, South Korea
| | - Se-Yeoun Cha
- Department of Veterinary Infectious Diseases and Avian Diseases, College of Veterinary Medicine and Center for Poultry Diseases Control, Chonbuk National University, South Korea
| | - Hyung-Kwan Jang
- Department of Veterinary Infectious Diseases and Avian Diseases, College of Veterinary Medicine and Center for Poultry Diseases Control, Chonbuk National University, South Korea
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28
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Antibiotic resistance trends and mechanisms in the foodborne pathogen,Campylobacter. Anim Health Res Rev 2017; 18:87-98. [DOI: 10.1017/s1466252317000135] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
AbstractCampylobacteris a major foodborne pathogen and is commonly present in food producing animals. This pathogenic organism is highly adaptable and has become increasingly resistant to various antibiotics. Recently, both the Centers for Disease Control and Prevention and the World Health Organization have designated antibiotic-resistantCampylobacteras a serious threat to public health. For the past decade, multiple mechanisms conferring resistance to clinically important antibiotics have been described inCampylobacter, and new resistance mechanisms constantly emerge in the pathogen. Some of the recent examples include theerm(B)gene conferring macrolide resistance, thecfr(C)genes mediating resistance to florfenicol and other antimicrobials, and a functionally enhanced variant of the multidrug resistance efflux pump, CmeABC. The continued emergence of new resistance mechanisms illustrates the extraordinary adaptability ofCampylobacterto antibiotic selection pressure and demonstrate the need for innovative strategies to control antibiotic-resistantCampylobacter. In this review, we will briefly summarize the trends of antibiotic resistance inCampylobacterand discuss the mechanisms of resistance to antibiotics used for animal production and important for clinical therapy in humans. A special emphasis will be given to the newly discovered antibiotic resistance.
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29
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Moré E, Ayats T, Ryan PG, Naicker PR, Keddy KH, Gaglio D, Witteveen M, Cerdà-Cuéllar M. Seabirds (Laridae) as a source of Campylobacter spp., Salmonella spp. and antimicrobial resistance in South Africa. Environ Microbiol 2017; 19:4164-4176. [PMID: 28752962 DOI: 10.1111/1462-2920.13874] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Accepted: 07/24/2017] [Indexed: 11/28/2022]
Abstract
Zoonotic thermophilic Campylobacter and nontyphoidal Salmonella enterica are a major cause of foodborne human gastroenteritis worldwide. There is little information about reservoirs of these zoonotic agents in Africa. Thus, chicks of kelp gulls (Larus dominicanus, n = 129) and greater crested terns (Thalasseus bergii, n = 100) were studied at five colonies on the Western Cape coast (South Africa) during summer 2013/2014. Campylobacter spp. occurrence was 14.0% (CI95% : 9.9-19.3), with C. jejuni the most frequently isolated species, whilst that of Salmonella was 27.5% (CI95% : 21.9-33.9) overall, with a higher prevalence in gulls (43.0%, CI95% : 34.8-52.4) than terns (7.0%, CI95% : 3.1-14.4). Among the 16 different S. enterica serovars found, Anatum, Enteritidis and Hadar were the most frequent. The same or highly similar pulsed-field gel electrophoresis genotype was found in some Salmonella isolates from seabirds and humans presenting with salmonellosis in Cape Town hospitals. Both Campylobacter and Salmonella isolates exhibited antimicrobial resistance to several agents, including critically important antimicrobials (quinolones, tetracyclines and β-lactams) and multidrug resistance in Salmonella serovars from kelp gulls. Our results highlight the importance of seabirds as reservoirs of Campylobacter and Salmonella resistant strains and their role in the maintenance and transmission of these bacteria in the environment, with implications for public health.
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Affiliation(s)
- Elisabet Moré
- Centre de Recerca en Sanitat Animal (CReSA), IRTA, Campus Universitat Autònoma de Barcelona, Bellaterra 08193, Barcelona, Spain
| | - Teresa Ayats
- Centre de Recerca en Sanitat Animal (CReSA), IRTA, Campus Universitat Autònoma de Barcelona, Bellaterra 08193, Barcelona, Spain
| | - Peter G Ryan
- FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, University of Cape Town, Rondebosch 7701, South Africa
| | - Preneshni R Naicker
- Division of Medical Microbiology, University of Cape Town, National Health Laboratory Service (NHLS) Groote Schuur Hospital, Cape Town 7925, South Africa
| | - Karen H Keddy
- National Institute for Communicable Diseases and Faculty of Health Sciences, University of the Witwatersrand, Centre for Enteric Diseases (CED), Johannesburg 2131, South Africa
| | - Davide Gaglio
- FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, University of Cape Town, Rondebosch 7701, South Africa
| | - Minke Witteveen
- FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, University of Cape Town, Rondebosch 7701, South Africa
| | - Marta Cerdà-Cuéllar
- Centre de Recerca en Sanitat Animal (CReSA), IRTA, Campus Universitat Autònoma de Barcelona, Bellaterra 08193, Barcelona, Spain
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30
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Thomrongsuwannakij T, Blackall PJ, Chansiripornchai N. A Study on Campylobacter jejuni and Campylobacter coli through Commercial Broiler Production Chains in Thailand: Antimicrobial Resistance, the Characterization of DNA Gyrase Subunit A Mutation, and Genetic Diversity by Flagellin A Gene Restriction Fragment Length Polymorphism. Avian Dis 2017; 61:186-197. [PMID: 28665716 DOI: 10.1637/11546-120116-reg.1] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Contaminated poultry meat is regarded as the main source of human campylobacteriosis. During September 2014 and February 2015, breeder flocks, hatcheries, and broiler farms from two chicken production chains were investigated chronologically. Five commercial breeder flocks (Breeder Flocks 1-5), two hatcheries (Hatcheries A and B), and five broiler flocks (Broiler Flocks 1-5) were sampled in this study. Campylobacter colonization of both breeder and broiler flocks was determined from cloacal swabs and environmental samples (pan feeders, footwear, darkling beetles, flies, feed, and water). The eggs from the breeder flocks were followed to hatcheries. At the hatcheries, early embryonic deaths, egg trays, eggshells, hatchers, and water were investigated. Cloacal swabs were taken from broilers at Days 1, 14, and 28 (all broiler flocks), and either 35 (Broiler Flocks 1 and 2) or 43 (Broiler Flocks 3-5). Thirty-six Campylobacter jejuni and 94 Campylobacter coli isolates collected through two broiler production chains were tested by twofold agar dilution for their susceptibility to antimicrobial agents. Most Campylobacter isolates were multidrug resistant (MDR), defined as being resistant to three or more antimicrobial classes ( C. jejuni : 100%; C. coli : 98.9%), and exhibited high resistance to enrofloxacin ( C. jejuni : 100%; C. coli : 98.9%). The vast majority of C. coli were resistant to tetracycline (97.9%), trimethoprim-sulfamethoxazole (81.9%), and doxycycline (79.8%), but only 55.6%, 36.1%, and 50% of C. jejuni isolates revealed resistance to these antimicrobial agents, respectively. A selected subset of 24 C. jejuni and 24 C. coli were characterized for their mutations in the quinolone resistance determining region of the DNA gyrase subunit A gene by nucleotide sequence analysis. The Thr-86-Ile substitution (ACA-ATA in C. jejuni or ACT-ATT in C. coli ) was found in all isolates. Moreover, a total of 130 Campylobacter isolates were typed with the use of polymerase chain reaction-restriction fragment length polymorphism of the flagellin A gene (flaA-RFLP) to determine their genetic relationships. Ten distinct clusters were recognized by flaA-RFLP typing. The results showed that horizontal transmission was the major route of Campylobacter transmission in this study. In conclusion, the emergence of MDR and high resistance rates to several antimicrobials are major concerns identified in this study. The prudent use of these agents and active surveillance of resistance at the farm level are essential steps to reduce the public health risks identified in this work.
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Affiliation(s)
- Thotsapol Thomrongsuwannakij
- A Avian Health Research Unit, Department of Veterinary Medicine, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Patrick J Blackall
- B Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St. Lucia 4067, Australia
| | - Niwat Chansiripornchai
- A Avian Health Research Unit, Department of Veterinary Medicine, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand
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Correlation between gyrA and CmeR Box Polymorphism and Fluoroquinolone Resistance in Campylobacter jejuni Isolates in China. Antimicrob Agents Chemother 2017; 61:AAC.00422-17. [PMID: 28438942 DOI: 10.1128/aac.00422-17] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 04/15/2017] [Indexed: 12/13/2022] Open
Abstract
Sequence analysis of 79 ciprofloxacin-resistant Campylobacter jejuni isolates collected in China showed resistance-related sequence variations in gyrA and CmeR-Box. All the isolates contain an identical Thr-86-Ile substitution in GyrA. Several novel CmeR-Box variations, including point substitutions, deletion, and insertion, were identified. The point insertion or deletion led to dramatically reduced binding of CmeR to the cmeABC promoter, which significantly increases the expression of cmeABC and contributes to the high fluoroquinolone resistance.
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The European Union summary report on antimicrobial resistance in zoonotic and indicator bacteria from humans, animals and food in 2015. EFSA J 2017; 15:e04694. [PMID: 32625402 PMCID: PMC7009883 DOI: 10.2903/j.efsa.2017.4694] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
The data on antimicrobial resistance in zoonotic and indicator bacteria in 2015, submitted by 28 EU Member States (MSs), were jointly analysed by EFSA and ECDC. Resistance in zoonotic Salmonella and Campylobacter from humans, animals and food, and resistance in indicator Escherichia coli as well as meticillin‐resistant Staphylococcus aureus in animals and food were addressed. ‘Microbiological’ resistance was assessed using epidemiological cut‐off (ECOFF) values; for some countries, qualitative data on human isolates were interpreted in a way which corresponds closely to the ECOFF‐defined ‘microbiological’ resistance. In Salmonella from humans, high proportions of isolates were resistant to ampicillin, sulfonamides and tetracyclines, whereas resistance to third‐generation cephalosporins was low. In Salmonella and Escherichia coli isolates from fattening pigs and calves under one year of age, resistance to ampicillin, tetracyclines and sulfonamides was frequently detected, whereas resistance to third‐generation cephalosporins was uncommon. For the first time, presumptive extended‐spectrum beta‐lactamase (ESBL)‐/AmpC‐/carbapenemase‐production in Salmonella and Escherichia coli was monitored in humans (Salmonella), meat (pork and beef), fattening pigs and calves. Varying occurrence/prevalence rates of ESBL‐/AmpC‐producers were observed between countries, and carbapenemase‐producing Escherichia coli were detected in single samples of pig meat and from fattening pigs from two MSs. Resistance to colistin was observed at low levels in Salmonella and Escherichia coli from fattening pigs and calves under one year of age and meat thereof. In Campylobacter from humans, high to extremely high proportions of isolates were resistant to ciprofloxacin and tetracyclines, particularly in C. coli. In a few countries, a third to half of C. coli in humans were resistant also to erythromycin, leaving few options for treatment of severe Campylobacter infections. High resistance to ciprofloxacin and tetracyclines was observed in C. coli isolates from fattening pigs, whereas much lower levels were recorded for erythromycin. Co‐resistance to critically important antimicrobials in both human and animal isolates was generally uncommon.
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Kassem II, Kehinde O, Kumar A, Rajashekara G. Antimicrobial-ResistantCampylobacterin Organically and Conventionally Raised Layer Chickens. Foodborne Pathog Dis 2017; 14:29-34. [DOI: 10.1089/fpd.2016.2161] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Issmat I. Kassem
- Food Animal Health Research Program, Ohio Agricultural Research and Development Center, Department of Veterinary Preventive Medicine, The Ohio State University, Wooster, Ohio
| | - Olugbenga Kehinde
- Food Animal Health Research Program, Ohio Agricultural Research and Development Center, Department of Veterinary Preventive Medicine, The Ohio State University, Wooster, Ohio
| | - Anand Kumar
- Food Animal Health Research Program, Ohio Agricultural Research and Development Center, Department of Veterinary Preventive Medicine, The Ohio State University, Wooster, Ohio
| | - Gireesh Rajashekara
- Food Animal Health Research Program, Ohio Agricultural Research and Development Center, Department of Veterinary Preventive Medicine, The Ohio State University, Wooster, Ohio
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34
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Schwarz S, Enne VI, van Duijkeren E. 40 years of veterinary papers inJAC– what have we learnt? J Antimicrob Chemother 2016; 71:2681-90. [DOI: 10.1093/jac/dkw363] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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35
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The European Union summary report on antimicrobial resistance in zoonotic and indicator bacteria from humans, animals and food in 2014. EFSA J 2016. [DOI: 10.2903/j.efsa.2016.4380] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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36
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Sierra-Arguello YM, Faulkner O, Tellez G, Hargis BM, Pinheiro do Nascimento V. The use of FTA cards for transport and detection of gyrA mutation of Campylobacter jejuni from poultry. Poult Sci 2016; 95:798-801. [PMID: 26769268 DOI: 10.3382/ps/pev384] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 10/29/2015] [Indexed: 11/20/2022] Open
Abstract
The purpose of the present study was to evaluate a technique involving the use of commercially available FTA classic card (Whatman) for transporting and detection of DNA to use in PCR analysis and genetic sequencing of Campylobacter jejuni of poultry origin. Fifty isolates of Campylobacter jejuni were obtained from broiler carcasses in Rio Grande do Sul, Brazil. Antimicrobial susceptibility testing to ciprofloxacin revealed that all 50 isolates were resistant to ciprofloxacin. Each isolate was transferred to Brucella broth tubes and incubated overnight at 41.5°C. Cell cultures were diluted to match a McFarland Turbidity Standard 0.5, and 110 μL of the cell suspension were applied to one circle on Whatman FTA classic cards. The samples were then covered and allowed to dry at room temperature. Cards were identified and stored at room temperature until further use (3 mo after collection). FTA cards were shipped for analysis to the Department of Poultry Science, University of Arkansas. Amplification of the Campylobacter gyrA gene was successful and demonstrated strong bands for a large amplicon for all 50 samples preserved on FTA cards. Mutations present in each gene were confirmed by DNA sequencing. Then, 7 samples were chosen for the sequencing. The detection of a mutation regarding ciprofloxacin-resistant isolates revealed that 7 samples had a mutation in the gyrA gene. In conclusion, the characteristics of the profiles suggest that the DNA has maintained its integrity after 3 mo of storage at room temperature and is a suitable template for PCR and sequencing from Campylobacter samples. The application of this technology has potential in numerous methodologies, especially when working in remote areas and in developing countries where access to laboratory facilities and equipment is limited.
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Affiliation(s)
- Y M Sierra-Arguello
- Center for Diagnostics and Research in Avian Pathology, College of Veterinary Medicine, Federal University of Rio Grande do Sul, Av. Bento Gonçalves, 8824, Agronomia, Porto Alegre, Rio Grande do Sul, Brazil
| | - O Faulkner
- Department of Poultry Science, University of Arkansas, Fayetteville
| | - G Tellez
- Department of Poultry Science, University of Arkansas, Fayetteville
| | - B M Hargis
- Department of Poultry Science, University of Arkansas, Fayetteville
| | - V Pinheiro do Nascimento
- Center for Diagnostics and Research in Avian Pathology, College of Veterinary Medicine, Federal University of Rio Grande do Sul, Av. Bento Gonçalves, 8824, Agronomia, Porto Alegre, Rio Grande do Sul, Brazil
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37
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Kashoma IP, Kassem II, John J, Kessy BM, Gebreyes W, Kazwala RR, Rajashekara G. Prevalence and Antimicrobial Resistance of Campylobacter Isolated from Dressed Beef Carcasses and Raw Milk in Tanzania. Microb Drug Resist 2015; 22:40-52. [PMID: 26153978 DOI: 10.1089/mdr.2015.0079] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Campylobacter species are commonly transmitted to humans through consumption of contaminated foods such as milk and meat. The aim of this study was to investigate the prevalence, antimicrobial resistance, and genetic determinants of resistance of Campylobacter isolated from raw milk and beef carcasses in Tanzania. The antimicrobial resistance genes tested included blaOXA-61 (ampicillin), aph-3-1 (aminoglycoside), tet(O) (tetracycline), and cmeB (multi-drug efflux pump). The prevalence of Campylobacter was 9.5% in beef carcasses and 13.4% in raw milk, respectively. Using multiplex-polymerase chain reaction (PCR), we identified 58.1% of the isolates as Campylobacter jejuni, 30.7% as Campylobacter coli, and 9.7% as other Campylobacter spp. One isolate (1.6%) was positive for both C. jejuni and C. coli specific PCR. Antimicrobial susceptibility testing using the disk diffusion assay and the broth microdilution method showed resistance to: ampicillin (63% and 94.1%), ciprofloxacin (9.3% and 11.8%), erythromycin (53.7% and 70.6%), gentamicin (0% and 15.7%), streptomycin (35.2% and 84.3%), and tetracycline (18.5% and 17.7%), respectively. Resistance to azithromycin (42.6%), nalidixic acid (64.8%), and chloramphenicol (13%) was determined using the disk diffusion assay only, while resistance to tylosin (90.2%) was quantified using the broth microdilution method. The blaOXA-61 (52.6% and 28.1%), cmeB (26.3% and 31.3%), tet(O) (26.3% and 31.3%), and aph-3-1 (5.3% and 3.0%) were detected in C. coli and C. jejuni. These findings highlight the extent of antimicrobial resistance in Campylobacter occurring in important foods in Tanzania. The potential risks to consumers emphasize the need for adequate control approaches, including the prudent use of antimicrobials to minimize the spread of antimicrobial-resistant Campylobacter.
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Affiliation(s)
- Isaac P Kashoma
- 1 Faculty of Veterinary Medicine, Sokoine University of Agriculture , Morogoro, Tanzania .,2 VPH-Biotec Global Consortium , Columbus, Ohio
| | - Issmat I Kassem
- 3 Food Animal Health Research Program, Ohio Agricultural Research and Development Center, The Ohio State University , Wooster, Ohio
| | - Julius John
- 1 Faculty of Veterinary Medicine, Sokoine University of Agriculture , Morogoro, Tanzania .,2 VPH-Biotec Global Consortium , Columbus, Ohio
| | - Beda M Kessy
- 1 Faculty of Veterinary Medicine, Sokoine University of Agriculture , Morogoro, Tanzania
| | - Wondwossen Gebreyes
- 2 VPH-Biotec Global Consortium , Columbus, Ohio.,4 Department of Veterinary Preventive Medicine, College of Veterinary Medicine, The Ohio State University , Columbus, Ohio
| | - Rudovick R Kazwala
- 1 Faculty of Veterinary Medicine, Sokoine University of Agriculture , Morogoro, Tanzania .,2 VPH-Biotec Global Consortium , Columbus, Ohio
| | - Gireesh Rajashekara
- 1 Faculty of Veterinary Medicine, Sokoine University of Agriculture , Morogoro, Tanzania .,2 VPH-Biotec Global Consortium , Columbus, Ohio.,3 Food Animal Health Research Program, Ohio Agricultural Research and Development Center, The Ohio State University , Wooster, Ohio
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38
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Frasão BS, Côrtes LR, Nascimento ER, Cunha NC, Almeida VL, Aquino MHC. Detecção de resistência às fluoroquinolonas em Campylobacter isolados de frangos de criação orgânica. PESQUISA VETERINARIA BRASILEIRA 2015. [DOI: 10.1590/s0100-736x2015000700003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Resumo Estudos têm revelado que a resistência às quinolonas em cepas de Campylobacter está relacionada à presença da mutação Treonina-86 para Isoleucina. Com o objetivo de investigar a presença dessa mutação em cepas de Campylobacter sensíveis e resistentes à ciprofloxacina e enrofloxacina, o conteúdo cecal de 80 frangos de corte de criação orgânica, abatidos sob Serviço de Inspeção Estadual (S.I.E.) do Estado do Rio de Janeiro, foram coletados e investigados para a presença de Campylobacter. A determinação da resistência à ciprofloxacina e enrofloxacina foi feita pela técnica de difusão em disco e de diluição em ágar para determinação da Concentração Inibitória Mínima (CIM). A detecção da mutação na Região Determinante de Resistencia às Quinolonas (RDRQ) no gene gyrA foi realizada através de sequenciamento. Campylobacter foi isolado a partir de 100% das amostras avaliadas, sendo 68,75% correspondente à C. jejuni e 31,25% à C. coli. No teste de difusão em disco, 100% das cepas foram resistentes à ciprofloxacina e 56,25% das cepas foram resistentes à enrofloxacina. No teste de diluição em ágar, todas as cepas foram resistentes à ciprofloxacina apresentando CIM variando de ≥ 16-64μg/mL, e resistência ou resistência intermediaria à enrofloxacina foi detectada em 42,50% (CIM ≥ 4-32μg/mL) e 38,75% (CIM = 2μg/mL) das cepas, respectivamente. A mutação Tre-86-Ile, foi observada em 100% das cepas analisadas. Além dessa mutação, foram observadas outras mutações não silenciosas (Val-73-Glu, Ser-114-Leu, Val-88-Asp, Ala-75-Asp, Ser-119-Gli, Arg-79-Lis) e mutações silenciosas (His-81-His, Ser-119-Ser, Ala-120-Ala, Fen-99-Fen, Ala-122-Ala, Gli-74-Gli, Ile-77-Ile, Ala-91-Ala, Leu-92-Leu, Val-93-Val, Ile-106-Ile, Tre-107-Tre, Gli-113-Gli, Ile-115-Ile, Gli-110-Gli). A observação de que cepas sensíveis à enrofloxacina pelos testes fenotípicos apresentavam a substituição Tre-86 para Ile sugere que outros mecanismos podem contribuir para a resistência à enrofloxacina em Campylobacter.
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39
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Pérez-Boto D, Herrera-León S, García-Peña FJ, Abad-Moreno JC, Echeita MA. Molecular mechanisms of quinolone, macrolide, and tetracycline resistance among Campylobacter isolates from initial stages of broiler production. Avian Pathol 2015; 43:176-82. [PMID: 24689432 DOI: 10.1080/03079457.2014.898245] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The aim of this study was to investigate the resistance mechanisms of quinolones, macrolides and tetracycline in campylobacter isolates from grandparent and parent broiler breeders in Spain. Twenty-six isolates were investigated for quinolone resistance, three isolates for macrolide resistance and 39 for tetracycline resistance. All of the quinolone-resistant isolates possessed the mutation Thr86Ile in the quinolone resistance-determining region of gyrA and one isolate possessed the mutation Pro104Ser. Only one Campylobacter coli population (defined by restriction fragment length polymorphism-polymerase chain reaction of flaA and pulsed field gel electrophoresis) was resistant to erythromycin, and the mutation A2075G (23S rDNA) was responsible for macrolide resistance. The tetO gene was found in all of the tetracycline-resistant isolates. Twenty-two out of the 39 isolates investigated by Southern blot possessed chromosomic location of tetO and 17 were located on plasmids. Most of the plasmids with tetO were of around 60 kb and conjugation was demonstrated in a selection of them. In conclusion, we showed that Thr86Ile is highly prevalent in quinolone-resistant isolates as well as mutation A2075G in macrolide-resistant isolates of poultry origin. More variability was found for tetO. The possibility of horizontal transmission of tetO among campylobacter isolates is also an issue of concern in public health.
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Affiliation(s)
- D Pérez-Boto
- a Unidad de Enterobacterias, Centro Nacional de Microbiología , Instituto de Salud Carlos III , Majadahonda , Madrid , Spain
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40
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EU Summary Report on antimicrobial resistance in zoonotic and indicator bacteria from humans, animals and food in 2013. EFSA J 2015. [DOI: 10.2903/j.efsa.2015.4036] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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41
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Wei B, Cha SY, Kang M, Roh JH, Seo HS, Yoon RH, Jang HK. Antimicrobial susceptibility profiles and molecular typing of Campylobacter jejuni and Campylobacter coli isolates from ducks in South Korea. Appl Environ Microbiol 2014; 80:7604-10. [PMID: 25261524 PMCID: PMC4249223 DOI: 10.1128/aem.02469-14] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Accepted: 09/23/2014] [Indexed: 12/30/2022] Open
Abstract
Campylobacter is a food-borne zoonotic pathogen that causes human gastroenteritis worldwide. Campylobacter bacteria are commensal in the intestines of many food production animals, including ducks and chickens. The objective of the study was to determine the prevalence of Campylobacter species in domestic ducks, and the agar dilution method was used to determine resistance of the isolates to eight antibiotics. In addition, multilocus sequence typing (MLST) was performed to determine the sequence types (STs) of selected Campylobacter isolates. Between May and September 2012, 58 duck farms were analyzed, and 56 (96.6%) were positive for Campylobacter. Among the isolates, 82.1% were Campylobacter jejuni, 16.1% were C. coli, and one was unidentified by PCR. Of the 46 C. jejuni isolates, 87.0%, 10.9%, and 21.7% were resistant to ciprofloxacin, erythromycin, and azithromycin, respectively. Among the C. coli isolates, all 9 strains were resistant to ampicillin, and 77.8% and 33.3% were resistant to ciprofloxacin and azithromycin, respectively. The majority of the Campylobacter isolates were classified as multidrug resistant. Twenty-eight STs were identified, including 20 STs for C. jejuni and 8 STs for C. coli. The most common clonal complexes in C. jejuni were the ST-21 complex and the ST-45 complex, while the ST-828 complex predominated in C. coli. The majority of isolates were of STs noted in ducks and humans from earlier studies, along with seven STs previously associated only with human disease. These STs overlapped between duck and human isolates, indicating that Campylobacter isolates from ducks should be considered potential sources of human infection.
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Affiliation(s)
- Bai Wei
- Departments of Infectious Diseases & Avian Diseases, College of Veterinary Medicine and Korea Zoonosis Research Institute, Chonbuk National University, Iksan, South Korea
| | - Se-Yeoun Cha
- Departments of Infectious Diseases & Avian Diseases, College of Veterinary Medicine and Korea Zoonosis Research Institute, Chonbuk National University, Iksan, South Korea
| | - Min Kang
- Departments of Infectious Diseases & Avian Diseases, College of Veterinary Medicine and Korea Zoonosis Research Institute, Chonbuk National University, Iksan, South Korea
| | - Jae-Hee Roh
- Departments of Infectious Diseases & Avian Diseases, College of Veterinary Medicine and Korea Zoonosis Research Institute, Chonbuk National University, Iksan, South Korea
| | - Hye-Suk Seo
- Departments of Infectious Diseases & Avian Diseases, College of Veterinary Medicine and Korea Zoonosis Research Institute, Chonbuk National University, Iksan, South Korea
| | - Ran-Hee Yoon
- Departments of Infectious Diseases & Avian Diseases, College of Veterinary Medicine and Korea Zoonosis Research Institute, Chonbuk National University, Iksan, South Korea
| | - Hyung-Kwan Jang
- Departments of Infectious Diseases & Avian Diseases, College of Veterinary Medicine and Korea Zoonosis Research Institute, Chonbuk National University, Iksan, South Korea
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42
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Characterization of antimicrobial resistance and application of RFLP for epidemiological monitoring of thermophilic Campylobacter spp. isolated from dogs and humans in Korea. ACTA ACUST UNITED AC 2014. [DOI: 10.14405/kjvr.2014.54.2.91] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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43
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The European Union Summary Report on antimicrobial resistance in zoonotic and indicator bacteria from humans, animals and food in 2012. EFSA J 2014. [DOI: 10.2903/j.efsa.2014.3590] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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44
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Di Giannatale E, Di Serafino G, Zilli K, Alessiani A, Sacchini L, Garofolo G, Aprea G, Marotta F. Characterization of antimicrobial resistance patterns and detection of virulence genes in Campylobacter isolates in Italy. SENSORS 2014; 14:3308-22. [PMID: 24556669 PMCID: PMC3958300 DOI: 10.3390/s140203308] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 02/12/2014] [Accepted: 02/14/2014] [Indexed: 01/20/2023]
Abstract
Campylobacter has developed resistance to several antimicrobial agents over the years, including macrolides, quinolones and fluoroquinolones, becoming a significant public health hazard. A total of 145 strains derived from raw milk, chicken faeces, chicken carcasses, cattle faeces and human faeces collected from various Italian regions, were screened for antimicrobial susceptibility, molecular characterization (SmaI pulsed-field gel electrophoresis) and detection of virulence genes (sequencing and DNA microarray analysis). The prevalence of C. jejuni and C. coli was 62.75% and 37.24% respectively. Antimicrobial susceptibility revealed a high level of resistance for ciprofloxacin (62.76%), tetracycline (55.86%) and nalidixic acid (55.17%). Genotyping of Campylobacter isolates using PFGE revealed a total of 86 unique SmaI patterns. Virulence gene profiles were determined using a new microbial diagnostic microarray composed of 70-mer oligonucleotide probes targeting genes implicated in Campylobacter pathogenicity. Correspondence between PFGE and microarray clusters was observed. Comparisons of PFGE and virulence profiles reflected the high genetic diversity of the strains examined, leading us to speculate different degrees of pathogenicity inside Campylobacter populations.
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Affiliation(s)
| | | | - Katiuscia Zilli
- LNR Campylobacter, IZSAM G.Caporale, via Campo Boario 64100 Teramo, Italy.
| | | | - Lorena Sacchini
- LNR Campylobacter, IZSAM G.Caporale, via Campo Boario 64100 Teramo, Italy.
| | - Giuliano Garofolo
- LNR Campylobacter, IZSAM G.Caporale, via Campo Boario 64100 Teramo, Italy.
| | - Giuseppe Aprea
- LNR Campylobacter, IZSAM G.Caporale, via Campo Boario 64100 Teramo, Italy.
| | - Francesca Marotta
- LNR Campylobacter, IZSAM G.Caporale, via Campo Boario 64100 Teramo, Italy.
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Hyytiäinen H, Juntunen P, Scott T, Kytömäki L, Venho R, Laiho A, Junttila S, Gyenesei A, Revez J, Hänninen ML. Effect of ciprofloxacin exposure on DNA repair mechanisms in Campylobacter jejuni. Microbiology (Reading) 2013; 159:2513-2523. [DOI: 10.1099/mic.0.069203-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Affiliation(s)
- Heidi Hyytiäinen
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, P.O. Box 66, University of Helsinki 00014, Finland
| | - Pekka Juntunen
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, P.O. Box 66, University of Helsinki 00014, Finland
| | - Thomas Scott
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, P.O. Box 66, University of Helsinki 00014, Finland
| | - Leena Kytömäki
- Finnish Microarray and Sequencing Centre (FMSC), Turku Centre for Biotechnology (BTK), University of Turku and Åbo Akademi University, Tykistökatu 6 A, Turku 20521, Finland
| | - Reija Venho
- Finnish Microarray and Sequencing Centre (FMSC), Turku Centre for Biotechnology (BTK), University of Turku and Åbo Akademi University, Tykistökatu 6 A, Turku 20521, Finland
| | - Asta Laiho
- Finnish Microarray and Sequencing Centre (FMSC), Turku Centre for Biotechnology (BTK), University of Turku and Åbo Akademi University, Tykistökatu 6 A, Turku 20521, Finland
| | - Sini Junttila
- Finnish Microarray and Sequencing Centre (FMSC), Turku Centre for Biotechnology (BTK), University of Turku and Åbo Akademi University, Tykistökatu 6 A, Turku 20521, Finland
| | - Attila Gyenesei
- Finnish Microarray and Sequencing Centre (FMSC), Turku Centre for Biotechnology (BTK), University of Turku and Åbo Akademi University, Tykistökatu 6 A, Turku 20521, Finland
| | - Joana Revez
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, P.O. Box 66, University of Helsinki 00014, Finland
| | - Marja-Liisa Hänninen
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, P.O. Box 66, University of Helsinki 00014, Finland
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46
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Bolton D, Patriarchi A, Fox Á, Fanning S. A study of the molecular basis of quinolone and macrolide resistance in a selection of Campylobacter isolates from intensive poultry flocks. Food Control 2013. [DOI: 10.1016/j.foodcont.2012.06.044] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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47
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Abstract
Campylobacter jejuni is a major cause of food-borne gastroenteritis worldwide. While mortality is low, morbidity imparted by post-infectious sequelae such as Guillain-Barré syndrome, Reiter syndrome/reactive arthritis and irritable bowel syndrome is significant. In addition, the economic cost is high due to lost productivity. Food animals, particularly poultry, are the main reservoirs of C. jejuni. The over-use of antibiotics in the human population and in animal husbandry has led to an increase in antibiotic-resistant infections, particularly with fluoroquinolones. This is problematic because C. jejuni gastroenteritis is clinically indistinguishable from that caused by other bacterial pathogens, and such illnesses are usually treated empirically with fluoroquinolones. Since C. jejuni is naturally transformable, acquisition of additional genes imparting antibiotic resistance is likely. Therefore, an understanding of the antibiotic resistance mechanisms in C. jejuni is needed to provide proper therapy both to the veterinary and human populations.
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Affiliation(s)
- Nicole M Iovine
- University of Florida and the Malcom Randall VA Medical Center, Gainesville, FL, USA.
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48
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Asakura H, Brüggemann H, Sheppard SK, Ekawa T, Meyer TF, Yamamoto S, Igimi S. Molecular evidence for the thriving of Campylobacter jejuni ST-4526 in Japan. PLoS One 2012; 7:e48394. [PMID: 23144873 PMCID: PMC3492356 DOI: 10.1371/journal.pone.0048394] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2012] [Accepted: 10/01/2012] [Indexed: 12/19/2022] Open
Abstract
Campylobacter jejuni is a leading cause of human gastroenteritis worldwide. This study aimed at a better understanding of the genetic diversity of this pathogen disseminated in Japan. We performed multilocus sequence typing (MLST) of Campylobacter jejuni isolated from different sources (100 human, 61 poultry, and 51 cattle isolates) in Japan between 2005 and 2006. This approach identified 62 sequence types (STs) and 19 clonal complexes (CCs), including 11 novel STs. These 62 STs were phylogenetically divided into 6 clusters, partially exhibiting host association. We identified a novel ST (ST-4526) that has never been reported in other countries; a phylogenetic analysis showed that ST-4526 and related STs showed distant lineage from the founder ST, ST-21 within CC-21. Comparative genome analysis was performed to investigate which properties could be responsible for the successful dissemination of ST-4526 in Japan. Results revealed that three representative ST-4526 isolates contained a putative island comprising the region from Cj0737 to Cj0744, which differed between the ST-4526 isolates and the reference strain NCTC11168 (ST-43/CC-21). Amino acid sequence alignment analyses showed that two of three ST-4526 isolates expressed 693aa- filamentous hemagglutination domain protein (FHA), while most of other C. jejuni strains whose genome were sequenced exhibited its truncation. Correspondingly, host cell binding of FHA-positive C. jejuni was greater than that of FHA-truncated strains, and exogenous administration of rFHA protein reduced cell adhesion of FHA-positive bacteria. Biochemical assays showed that this putative protein exhibited a dose-dependent binding affinity to heparan sulfate, indicating its adhesin activity. Moreover, ST-4526 showed increased antibiotic-resistance (nalidixic acid and fluoroquinolones) and a reduced ability for DNA uptake. Taken together, our data suggested that these combined features contributed to the clonal thriving of ST-4526 in Japan.
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MESH Headings
- Adhesins, Bacterial/chemistry
- Adhesins, Bacterial/metabolism
- Animals
- Bacterial Adhesion
- Base Sequence
- Biological Evolution
- Campylobacter jejuni/classification
- Campylobacter jejuni/genetics
- Campylobacter jejuni/growth & development
- Campylobacter jejuni/isolation & purification
- Cattle
- DNA, Bacterial/metabolism
- Databases, Genetic
- Drug Resistance, Microbial/genetics
- Electrophoresis, Gel, Pulsed-Field
- Genetic Linkage
- Genetic Loci
- Genetic Variation
- Genome, Bacterial/genetics
- Humans
- Japan
- Lipopolysaccharides/metabolism
- Multilocus Sequence Typing/methods
- N-Acetylneuraminic Acid/metabolism
- Phylogeography
- Poultry/microbiology
- Recombination, Genetic/genetics
- Transformation, Genetic
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Affiliation(s)
- Hiroshi Asakura
- Division of Biomedical Food Research, National Institute of Health Sciences, Tokyo, Japan.
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49
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Kurinčič M, Klančnik A, Smole Možina S. Effects of efflux pump inhibitors on erythromycin, ciprofloxacin, and tetracycline resistance in Campylobacter spp. isolates. Microb Drug Resist 2012; 18:492-501. [PMID: 22741576 DOI: 10.1089/mdr.2012.0017] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The aim was to assess the potency of the efflux pump inhibitors (EPIs) phenylalanine-arginine ß-naphthylamide (PAßN) and 1-(1-naphthylmethyl)-piperazine (NMP) and the putative natural EPI phenolic (-)-epigallocatechin gallate (EGCG) for the reversal of erythromycin, ciprofloxacin, and tetracycline resistance in Campylobacter jejuni and Campylobacter coli isolates. We investigated target mutations and resistant genes involved in erythromycin and tetracycline resistance and determined the roles of the bacterial drug efflux systems (cmeB, cmeF, and cmeR) in antimicrobial resistance. Our data show that most of the high-level erythromycin resistance and all of the tetracycline resistance can be explained through mutations in 23S rRNA and the presence of the tetO gene, respectively. The EPIs show the ability to partly reverse drug resistance in these Campylobacter isolates. Based on a fourfold or greater reduction in the erythromycin minimal inhibitory concentration (MIC), PAßN and NMP had clear effects in almost of all of the isolates tested. PAßN had a highly selective action on the ciprofloxacin and tetracycline MICs. Inactivation of cmeB increased susceptibility to all of the antimicrobials tested, whereas inactivation of cmeF and cmeR had no effects. A notable decrease in resistance to erythromycin and ciprofloxacin in the presence of subinhibitory concentrations of EGCG demonstrates the resistance-modifying activities of this natural EPI, and indicates its potential use in the control of Campylobacter spp. in the food chain.
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Affiliation(s)
- Marija Kurinčič
- Department of Food Science and Technology, University of Ljubljana, Ljubljana, Slovenia
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50
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Han J, Wang Y, Sahin O, Shen Z, Guo B, Shen J, Zhang Q. A fluoroquinolone resistance associated mutation in gyrA Affects DNA supercoiling in Campylobacter jejuni. Front Cell Infect Microbiol 2012; 2:21. [PMID: 22919613 PMCID: PMC3417464 DOI: 10.3389/fcimb.2012.00021] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2011] [Accepted: 02/14/2012] [Indexed: 01/23/2023] Open
Abstract
The prevalence of fluoroquinolone (FQ)-resistant Campylobacter has become a concern for public health. To facilitate the control of FQ-resistant (FQR) Campylobacter, it is necessary to understand the impact of FQR on the fitness of Campylobacter in its natural hosts as understanding fitness will help to determine and predict the persistence of FQRCampylobacter. Previously it was shown that acquisition of resistance to FQ antimicrobials enhanced the in vivo fitness of FQRCampylobacter. In this study, we confirmed the role of the Thr-86-Ile mutation in GyrA in modulating Campylobacter fitness by reverting the mutation to the wild-type (WT) allele, which resulted in the loss of the fitness advantage. Additionally, we determined if the resistance-conferring GyrA mutations alter the enzymatic function of the DNA gyrase. Recombinant WT gyrase and mutant gyrases with three different types of mutations (Thr-86-Ile, Thr-86-Lys, and Asp-90-Asn), which are associated with FQR in Campylobacter, were generated in E. coli and compared for their supercoiling activities using an in vitro assay. The mutant gyrase with the Thr-86-Ile change showed a greatly reduced supercoiling activity compared with the WT gyrase, while other mutant gyrases did not show an altered supercoiling. Furthermore, we measured DNA supercoiling within Campylobacter cells using a reporter plasmid. Consistent with the results from the in vitro supercoiling assay, the FQR mutant carrying the Thr-86-Ile change in GyrA showed much less DNA supercoiling than the WT strain and the mutant strains carrying other mutations. Together, these results indicate that the Thr-86-Ile mutation, which is predominant in clinical FQRCampylobacter, modulates DNA supercoiling homeostasis in FQRCampylobacter.
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Affiliation(s)
- Jing Han
- Department of Veterinary Microbiology and Preventive Medicine, Iowa State University Ames, IA, USA
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