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Ruiz de Alegría Puig C, Fernández Martínez M, Pablo Marcos D, Agüero Balbín J, Calvo Montes J. Outbreak of Arcobacter butzleri? An emerging enteropathogen. ENFERMEDADES INFECCIOSAS Y MICROBIOLOGIA CLINICA (ENGLISH ED.) 2023; 41:169-172. [PMID: 36870733 DOI: 10.1016/j.eimce.2021.10.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 10/14/2021] [Indexed: 03/06/2023]
Abstract
BACKGROUND Arcobacter butzleri is a gram-negative rod, with microaerobic growth at an optimal temperature of 37°C. It was reported to be the fourth most common Campylobacter-like organism isolated from patients with diarrhoea. OBJECTIVE Characterise a potential outbreak of A. butzleri detected in a short period of time in the University Hospital Marqués de Valdecilla. METHODS Eight strains of A. butzleri were detected in our hospital in only two months. Isolates were identified by MALDI-TOF MS system and 16S rDNA sequencing. Enterobacterial repetitive intergenic consensus-PCR (ERIC-PCR) and Pulsed Field Gel Electrophoresis (PFGE) were carried out to assess clonal relationship. Gradient strips (Etest) were used to determine susceptibility by agar diffusion. RESULTS ERIC-PCR and PFGE confirmed the lack of clonal relationship between strains. Erythromycin or ciprofloxacin might be appropriate for antibiotic treatment of infections. CONCLUSIONS A. butzleri is an emerging pathogen with increasing incidence, and may be underestimated.
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Affiliation(s)
| | | | - Daniel Pablo Marcos
- Service of Microbiology, University Hospital Marqués de Valdecilla-IDIVAL, Santander, Spain
| | - Jesús Agüero Balbín
- Service of Microbiology, University Hospital Marqués de Valdecilla-IDIVAL, Santander, Spain; Department of Molecular Biology, University of Cantabria, Santander, Spain
| | - Jorge Calvo Montes
- Service of Microbiology, University Hospital Marqués de Valdecilla-IDIVAL, Santander, Spain
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Ruiz de Alegría Puig C, Fernández Martínez M, Pablo Marcos D, Agüero Balbín J, Calvo Montes J. Outbreak of Arcobacter butzleri? An emerging enteropathogen. Enferm Infecc Microbiol Clin 2021. [DOI: 10.1016/j.eimc.2021.10.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Isolation, characterization and antibiotic resistance of Proteus mirabilis from Belgian broiler carcasses at retail and human stool. Food Microbiol 2020; 96:103724. [PMID: 33494897 DOI: 10.1016/j.fm.2020.103724] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 11/27/2020] [Accepted: 12/22/2020] [Indexed: 11/20/2022]
Abstract
Proteus mirabilis is an important pathogen involved in human urinary tract infections, and also more isolated from stools of patients with diarrheal disease than from healthy patients. The role of food, especially poultry products as source for human infection and multi-resistant strains remains unclear. As a resident in broilers' intestines, P. mirabilis can contaminate broiler carcasses due to slaughter practices, and be a risk for human infection. The present study evaluated the performance of five isolation media, and subsequently examined the presence of P. mirabilis on broiler carcasses at retail. Additionally, isolates were characterized by the Dienes' test, repetitive element PCR fingerprinting and pulsed-field gel electrophoresis, and their antibiotic resistance profile determined. Using a combined isolation protocol on blood agar, xylose lysine deoxycholate agar and violet red bile glucose agar, P. mirabilis was isolated from 29 out of 80 broiler carcasses (36.25%) with a mean contamination level of 2.25 ± 0.50 log10 CFU/g. A high strain heterogeneity was present in isolates from broilers and human stool. The same strains were not shared, but the antibiotic resistance profiling was similar. A role of poultry products as source for human infection should be taken into account.
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Caruso M, Latorre L, Santagada G, Fraccalvieri R, Difato LM, Miccolupo A, Capozzi L, Bonerba E, Mottola A, Parisi A. Arcobacter spp. in bovine milk: An emerging pathogen with potential zoonotic risk. Ital J Food Saf 2019; 7:7685. [PMID: 30854340 PMCID: PMC6379690 DOI: 10.4081/ijfs.2018.7685] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Accepted: 10/17/2018] [Indexed: 11/23/2022] Open
Abstract
The aim of the present study was to assess the prevalence and genetic characteristics of Arcobacter spp. in bovine bulk tank milk produced in Apulia Region (Italy). Samples collected from 396 dairy farms, after enrichment in a selective broth, were subjected to an Arcobacter genus - specific Real Time PCR. Positive broths, previously filtered, were seeded on Karmali, MCCD and Columbia Blood Agar plates; presumptive Arcobacter spp. colonies were identified using an amplification and sequencing method and then characterized by Multi-Locus Sequence Typing (MLST). Prevalence of Arcobacter spp. in bovine milk samples was 5% (20/396); A. butzleri was the only isolated species, in agreement with previous studies that reported A. butzleri as the most commonly recovered species in milk and dairy products. MLST analysis of the 20 A. butzleri strains identified 81 alleles and 16 STs. Consistent with previous studies, MLST revealed a high level of heterogeneity between the A. butzleri isolates and confirmed the high discriminatory power of this method and its suitability for epidemiological investigations. This study confirmed the importance of raw milk as a possible source of Arcobacter spp. for humans.
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Affiliation(s)
- Marta Caruso
- Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata, Foggia.,Anthrax Reference Institute of Italy, Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata, Foggia
| | - Laura Latorre
- Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata, Foggia
| | | | - Rosa Fraccalvieri
- Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata, Foggia
| | - Laura Maria Difato
- Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata, Foggia
| | - Angela Miccolupo
- Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata, Foggia
| | - Loredana Capozzi
- Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata, Foggia
| | | | - Anna Mottola
- Department of Veterinary Medicine, University of Bari, Italy
| | - Antonio Parisi
- Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata, Foggia
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5
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Van den Abeele AM, Vogelaers D, Vandamme P, Vanlaere E, Houf K. Filling the gaps in clinical proteomics: a do-it-yourself guide for the identification of the emerging pathogen Arcobacter by matrix-assisted laser desorption ionization-time of flight mass spectrometry. J Microbiol Methods 2018; 152:92-97. [PMID: 30017851 DOI: 10.1016/j.mimet.2018.07.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Revised: 06/24/2018] [Accepted: 07/11/2018] [Indexed: 12/01/2022]
Abstract
Arcobacters are considered emerging gastrointestinal pathogens. Rapid, reliable and species-specific identification of these bacteria is important. Biochemical tests commonly yield negative or variable results. Molecular methods prove more reliable but are time consuming and lack specificity. Matrix assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF MS) is a fast, cheap and robust technique that has revolutionized genus and species identification in clinical microbiology. The performance of an in vitro diagnostic (RUO) spectral database of MALDI-TOF MS for the identification of human clinically relevant Arcobacter isolates was validated and compared to an in house created Reference Spectral database (RS) containing a representative set of deposited Arcobacter strains of zoonotic interest. A challenge panel of clinical, human and veterinary, unique Campylobacteraceae strains was used to test accuracy. Using direct colony transfer, sensitivity with RS was significantly better than with RUO for A. butzleri and A. cryaerophilus identification (100% and 92% versus 74% and 16%). For A. skirrowii, sensitivity remained low (21% versus 0%). Reanalysis using formic acid overlay (on-target extraction) augmented sensitivity for the latter species to 64%. Specificity of RS database remained excellent without any misidentifications of human clinical strains including Campylobacter fetus and C. jejuni/coli. The use of an enriched database for MALDI-TOF MS identification of Arcobacter spp. of human interest produced high-confidence identifications to species level resulting in a significantly improved sensitivity with conservation of excellent specificity. Misidentifications, which can have therapeutic and public health consequences, were not encountered.
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Affiliation(s)
| | - Dirk Vogelaers
- Department of General Internal Medicine, Ghent University Hospital, De Pintelaan 185, Ghent, Belgium
| | - Peter Vandamme
- Department of Biochemistry and Microbiology, Ghent University, Faculty of Sciences, Ghent, Belgium
| | - Elke Vanlaere
- Microbiology Laboratory, Saint-Lucas Hospital, Groenebriel 1, 9000 Ghent, Belgium
| | - Kurt Houf
- Department of Veterinary Public Health and Food Safety, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820 Merelbeke, Belgium
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6
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Ferreira S, Correia DR, Oleastro M, Domingues FC. Arcobacter butzleri Ciprofloxacin Resistance: Point Mutations in DNA Gyrase A and Role on Fitness Cost. Microb Drug Resist 2018; 24:915-922. [PMID: 29336679 DOI: 10.1089/mdr.2017.0295] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Arcobacter butzleri is a widely distributed emerging pathogen resistant to various classes of antimicrobial agents, namely fluoroquinolones. A. butzleri resistance to fluoroquinolones is conferred by point mutations at the antibiotic target. The aim of this study was to evaluate mutations at gyrA associated with ciprofloxacin resistance and evaluate whether acquisition of resistance impacts on fitness and stress tolerance of A. butzleri. A. butzleri ciprofloxacin mutants were generated by laboratory induction. Identification of mutations associated with ciprofloxacin resistance was performed by gyrA sequencing. Growth kinetics, cost of fitness, biofilm formation ability, and stress tolerance were assessed. Two amino acid substitutions in the quinolone resistance-determining region of GyrA were identified in the mutant strains, one previously described (Thr-85-Ile) and a new substitution (Asp-89-Tyr). No differences in growth kinetics were recorded between parental and mutant strains; however, fitness cost was variable, according to the genetic background of the strains, and independently of ciprofloxacin resistance. Overall, the ciprofloxacin resistance development did not significantly affect stress tolerance, motility, or biofilm-forming ability. In conclusion, acquisition of ciprofloxacin resistance in A. butzleri is associated with mutations in gyrA and is likely well compensated, with cost of fitness reflecting the diversity in genetic background of this bacterium.
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Affiliation(s)
- Susana Ferreira
- 1 CICS-UBI-Health Sciences Research Center, University of Beira Interior , Covilhã, Portugal
| | - Daniela R Correia
- 1 CICS-UBI-Health Sciences Research Center, University of Beira Interior , Covilhã, Portugal
| | - Mónica Oleastro
- 2 Department of Infectious Diseases, National Institute of Health Dr. Ricardo Jorge , National Reference Laboratory for Gastrointestinal Infections, Lisbon, Portugal
| | - Fernanda C Domingues
- 1 CICS-UBI-Health Sciences Research Center, University of Beira Interior , Covilhã, Portugal
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7
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Ramees TP, Dhama K, Karthik K, Rathore RS, Kumar A, Saminathan M, Tiwari R, Malik YS, Singh RK. Arcobacter: an emerging food-borne zoonotic pathogen, its public health concerns and advances in diagnosis and control - a comprehensive review. Vet Q 2017; 37:136-161. [PMID: 28438095 DOI: 10.1080/01652176.2017.1323355] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Arcobacter has emerged as an important food-borne zoonotic pathogen, causing sometimes serious infections in humans and animals. Newer species of Arcobacter are being incessantly emerging (presently 25 species have been identified) with novel information on the evolutionary mechanisms and genetic diversity among different Arcobacter species. These have been reported from chickens, domestic animals (cattle, pigs, sheep, horses, dogs), reptiles (lizards, snakes and chelonians), meat (poultry, pork, goat, lamb, beef, rabbit), vegetables and from humans in different countries. Arcobacters are implicated as causative agents of diarrhea, mastitis and abortion in animals, while causing bacteremia, endocarditis, peritonitis, gastroenteritis and diarrhea in humans. Three species including A. butzleri, A. cryaerophilus and A. skirrowii are predominantly associated with clinical conditions. Arcobacters are primarily transmitted through contaminated food and water sources. Identification of Arcobacter by biochemical tests is difficult and isolation remains the gold standard method. Current diagnostic advances have provided various molecular methods for efficient detection and differentiation of the Arcobacters at genus and species level. To overcome the emerging antibiotic resistance problem there is an essential need to explore the potential of novel and alternative therapies. Strengthening of the diagnostic aspects is also suggested as in most cases Arcobacters goes unnoticed and hence the exact epidemiological status remains uncertain. This review updates the current knowledge and many aspects of this important food-borne pathogen, namely etiology, evolution and emergence, genetic diversity, epidemiology, the disease in animals and humans, public health concerns, and advances in its diagnosis, prevention and control.
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Affiliation(s)
- Thadiyam Puram Ramees
- a Division of Veterinary Public Health , ICAR-Indian Veterinary Research Institute (IVRI) , Bareilly , India
| | - Kuldeep Dhama
- b Division of Pathology , ICAR-Indian Veterinary Research Institute (IVRI) , Bareilly , India
| | - Kumaragurubaran Karthik
- c Central University Laboratory , Tamil Nadu Veterinary and Animal Sciences University , Chennai , India
| | - Ramswaroop Singh Rathore
- a Division of Veterinary Public Health , ICAR-Indian Veterinary Research Institute (IVRI) , Bareilly , India
| | - Ashok Kumar
- a Division of Veterinary Public Health , ICAR-Indian Veterinary Research Institute (IVRI) , Bareilly , India
| | - Mani Saminathan
- b Division of Pathology , ICAR-Indian Veterinary Research Institute (IVRI) , Bareilly , India
| | - Ruchi Tiwari
- d Department of Veterinary Microbiology and Immunology, College of Veterinary Sciences , UP Pandit Deen Dayal Upadhayay Pashu Chikitsa Vigyan Vishwavidyalay Evum Go-Anusandhan Sansthan (DUVASU) , Mathura , India
| | - Yashpal Singh Malik
- e Division of Biological Standardization , ICAR-Indian Veterinary Research Institute (IVRI) , Bareilly , India
| | - Raj Kumar Singh
- f ICAR-Indian Veterinary Research Institute (IVRI) , Bareilly , India
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Rovetto F, Carlier A, Van den Abeele AM, Illeghems K, Van Nieuwerburgh F, Cocolin L, Houf K. Characterization of the emerging zoonotic pathogen Arcobacter thereius by whole genome sequencing and comparative genomics. PLoS One 2017; 12:e0180493. [PMID: 28671965 PMCID: PMC5495459 DOI: 10.1371/journal.pone.0180493] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 06/17/2017] [Indexed: 11/24/2022] Open
Abstract
Four Arcobacter species have been associated with human disease, and based on current knowledge, these Gram negative bacteria are considered as potential food and waterborne zoonotic pathogens. At present, only the genome of the species Arcobacter butzleri has been analysed, and still little is known about their physiology and genetics. The species Arcobacter thereius has first been isolated from tissue of aborted piglets, duck and pig faeces, and recently from stool of human patients with enteritis. In the present study, the complete genome and analysis of the A. thereius type strain LMG24486T, as well as the comparative genome analysis with 8 other A. thereius strains are presented. Genome analysis revealed metabolic pathways for the utilization of amino acids, which represent the main source of energy, together with the presence of genes encoding for respiration-associated and chemotaxis proteins. Comparative genome analysis with the A. butzleri type strain RM4018 revealed a large correlation, though also unique features. Furthermore, in silico DDH and ANI based analysis of the nine A. thereius strains disclosed clustering into two closely related genotypes. No discriminatory differences in genome content nor phenotypic behaviour were detected, though recently the species Arcobacter porcinus was proposed to encompass part of the formerly identified Arcobacter thereius strains. The report of the presence of virulence associated genes in A. thereius, the presence of antibiotic resistance genes, verified by in vitro susceptibility testing, as well as other pathogenic related relevant features, support the classification of A. thereius as an emerging pathogen.
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Affiliation(s)
- Francesca Rovetto
- Department of Veterinary Public Health and Food Safety, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, Merelbeke, Belgium
- Department of Forestry, Agriculture and Food Sciences, University of Torino, Largo Braccini 2, Grugliasco, Italy
| | - Aurélien Carlier
- Laboratory of Microbiology, Faculty of Sciences, Ghent University, K. L. Ledeganckstraat 35, Ghent, Belgium
| | | | - Koen Illeghems
- Department of Veterinary Public Health and Food Safety, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, Merelbeke, Belgium
| | - Filip Van Nieuwerburgh
- Laboratory of Pharmaceutical Biotechnology, Faculty of Pharmaceutical Sciences, Ghent University, Harelbekestraat 72, Ghent, Belgium
| | - Luca Cocolin
- Department of Forestry, Agriculture and Food Sciences, University of Torino, Largo Braccini 2, Grugliasco, Italy
| | - Kurt Houf
- Department of Veterinary Public Health and Food Safety, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, Merelbeke, Belgium
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Piva S, Gariano GR, Bonilauri P, Giacometti F, Decastelli L, Florio D, Massella E, Serraino A. Occurrence of putative virulence genes on Arcobacter butzleri isolated from three different environmental sites throughout the dairy chain. J Appl Microbiol 2017; 122:1071-1077. [PMID: 28106302 DOI: 10.1111/jam.13403] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 01/10/2017] [Accepted: 01/13/2017] [Indexed: 11/29/2022]
Abstract
AIMS This comparative study investigated the occurrence of cadF, cj1349, ciaB, pldA, tlyA, hecA, hecB, mviN, irgA and IroE genes in 212 Arcobacter butzleri isolated from three different environmental sites linked to the dairy chain (farms, industrial and artisanal dairy plants) located in three Italian regions (Lombardy, Emilia-Romagna and Calabria). METHODS AND RESULTS According to the presence of these genes, different pathotypes (P-types) were determined. The main genes detected were ciaB, mviN, tlyA, cj1349, pldA and cadF, while the least common genes were iroE, hecA, hecB and irgA. TlyA, irgA, hecA, hecB and iroE, which were significantly more frequent in isolates recovered in industrial dairy plants. Twelve P-types were detected. The occurrence of the most frequently detected P-types (P-types 1, 2, 3 and 5) differed significantly (P < 0·001) in relation to both the environmental site and geographical area of isolation. The highest diversity in P-types was observed in industrial dairy plants and in the Calabria region. CONCLUSIONS The results of this study show a correlation between the occurrence of putative virulence genes and virulence genotype variability depending on the environmental site and geographical origin of the isolates. SIGNIFICANCE AND IMPACT OF THE STUDY The present study provides insights into the similar distribution of putative virulence genes in a dairy chain and other sources' isolates and also into a geographical distribution of some P-types. We have shown that industrial dairy plants may represent an environmental site favouring a selection of the isolates with a higher pathogenetic pattern.
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Affiliation(s)
- S Piva
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
| | - G R Gariano
- Experimental Institute for Zooprophylaxis in Piedmont, Liguria and Valle D'Aosta, Turin, Italy
| | - P Bonilauri
- Experimental Institute for Zooprophylaxis in Lombardy and Emilia Romagna, Reggio Emilia, Italy
| | - F Giacometti
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
| | - L Decastelli
- Experimental Institute for Zooprophylaxis in Piedmont, Liguria and Valle D'Aosta, Turin, Italy
| | - D Florio
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
| | - E Massella
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
| | - A Serraino
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano Emilia, Bologna, Italy
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Lee M, Seo DJ, Jeon SB, Ok HE, Jung H, Choi C, Chun HS. Detection of Foodborne Pathogens and Mycotoxins in Eggs and Chicken Feeds from Farms to Retail Markets. Korean J Food Sci Anim Resour 2016; 36:463-8. [PMID: 27621686 PMCID: PMC5018505 DOI: 10.5851/kosfa.2016.36.4.463] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Revised: 06/22/2016] [Accepted: 06/26/2016] [Indexed: 11/06/2022] Open
Abstract
Contamination by foodborne pathogens and mycotoxins was examined in 475 eggs and 20 feed samples collected from three egg layer farms, three egg-processing units, and five retail markets in Korea. Microbial contamination with Salmonella species, Escherichia coli, and Arcobacter species was examined by bacterial culture and multiplex polymerase chain reaction (PCR). The contamination levels of aflatoxins, ochratoxins, and zearalenone in eggs and chicken feeds were simultaneously analyzed with high-performance liquid chromatography coupled with fluorescence detection after the post-derivatization. While E. coli was isolated from 9.1% of eggs, Salmonella species were not isolated. Arcobacter species were detected in 0.8% of eggs collected from egg layers by PCR only. While aflatoxins, ochratoxins, and zearalenone were found in 100%, 100%, and 85% of chicken feeds, their contamination levels were below the maximum acceptable levels (1.86, 2.24, and 147.53 μg/kg, respectively). However, no eggs were contaminated with aflatoxins, ochratoxins, or zearalenone. Therefore, the risk of contamination by mycotoxins and microbes in eggs and chicken feeds is considered negligible and unlikely to pose a threat to human health.
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Affiliation(s)
- Minhwa Lee
- Department of Food and Nutrition, College of Biotechnology and Natural Resources, Chung-Ang University, Anseong 17546, Korea
| | - Dong Joo Seo
- Department of Food and Nutrition, College of Biotechnology and Natural Resources, Chung-Ang University, Anseong 17546, Korea
| | - Su Been Jeon
- Department of Food and Nutrition, College of Biotechnology and Natural Resources, Chung-Ang University, Anseong 17546, Korea
| | - Hyun Ee Ok
- Advanced Food Safety Research Group, BK21 Plus, Department of Food Science and Technology, College of Biotechnology and Natural Resources, Chung-Ang University, Anseong 17546, Korea
| | - Hyelee Jung
- Advanced Food Safety Research Group, BK21 Plus, Department of Food Science and Technology, College of Biotechnology and Natural Resources, Chung-Ang University, Anseong 17546, Korea
| | - Changsun Choi
- Department of Food and Nutrition, College of Biotechnology and Natural Resources, Chung-Ang University, Anseong 17546, Korea
| | - Hyang Sook Chun
- Advanced Food Safety Research Group, BK21 Plus, Department of Food Science and Technology, College of Biotechnology and Natural Resources, Chung-Ang University, Anseong 17546, Korea
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Van den Abeele AM, Vogelaers D, Vanlaere E, Houf K. Antimicrobial susceptibility testing ofArcobacter butzleriandArcobacter cryaerophilusstrains isolated from Belgian patients. J Antimicrob Chemother 2016; 71:1241-4. [DOI: 10.1093/jac/dkv483] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Accepted: 12/17/2015] [Indexed: 11/13/2022] Open
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12
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De Cesare A, Parisi A, Giacometti F, Serraino A, Piva S, Caruso M, De Santis EPL, Manfreda G. Multilocus sequence typing of Arcobacter butzleri isolates collected from dairy plants and their products, and comparison with their PFGE types. J Appl Microbiol 2015; 120:165-74. [PMID: 26481316 DOI: 10.1111/jam.12977] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2015] [Revised: 10/09/2015] [Accepted: 10/09/2015] [Indexed: 11/26/2022]
Abstract
AIMS The present study aimed to determine, by multilocus sequence type (MLST), the heterogeneity level of Arcobacter butzleri isolates and to compare MLST and pulsed-field gel electrophoresis (PFGE) in terms of discriminatory power (DI) as well as unidirectional and bi-directional concordance. METHODS AND RESULTS Arcobacter butzleri isolates (N = 133) from dairy products and environmental samples, collected from dairy plants, were characterized by MLST and PFGE with SacII and classified in 29 sequence types (STs), 47 PFGE and 62 type strains (TS). Among the 119 alleles, 19 were previously unreported and the same for all the STs but two. A significant linkage disequilibrium was detected when the complete ST data set was analysed The DIs of MLST, PFGE and their combination were 0·937, 0·953 and 0·965 respectively. The adjusted Wallace coefficients between MLST and PFGE as well as PFGE and MLST were 0·535 and 0·720 respectively; the adjusted Rand coefficient was 0·612. CONCLUSIONS The A. butzleri studied population showed recombination to some degree. PFGE showed a DI higher than MLST. Both methods presented good concordance. The TS analysis seems to show persistence of the same strain on time and possible cross-contaminations between food and environmental sites. SIGNIFICANCE AND IMPACT OF THE STUDY This study provides insights in the A. butzleri population found in raw milk, cheese, and dairy production plants. The data suggest that MLST and PFGE genotypes correlate reasonably well, although their combination results in optimal resolution.
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Affiliation(s)
- A De Cesare
- Department of Agricultural and Food Sciences, University of Bologna, Ozzano dell'Emilia, Italy
| | - A Parisi
- Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata, Putignano, Italy
| | - F Giacometti
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano dell'Emilia, Italy
| | - A Serraino
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano dell'Emilia, Italy
| | - S Piva
- Department of Veterinary Medical Sciences, University of Bologna, Ozzano dell'Emilia, Italy
| | - M Caruso
- Istituto Zooprofilattico Sperimentale della Puglia e della Basilicata, Putignano, Italy
| | - E P L De Santis
- Department of Veterinary Medicine, University of Sassari, Sassari, Italy
| | - G Manfreda
- Department of Agricultural and Food Sciences, University of Bologna, Ozzano dell'Emilia, Italy
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Giacometti F, Losio M, Daminelli P, Cosciani-Cunico E, Dalzini E, Serraino A. Short communication: Arcobacter butzleri and Arcobacter cryaerophilus survival and growth in artisanal and industrial ricotta cheese. J Dairy Sci 2015; 98:6776-81. [DOI: 10.3168/jds.2015-9560] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Accepted: 06/17/2015] [Indexed: 11/19/2022]
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Webb AL, Kruczkiewicz P, Selinger LB, Inglis GD, Taboada EN. Development of a comparative genomic fingerprinting assay for rapid and high resolution genotyping of Arcobacter butzleri. BMC Microbiol 2015; 15:94. [PMID: 25947176 PMCID: PMC4424573 DOI: 10.1186/s12866-015-0426-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2014] [Accepted: 04/15/2015] [Indexed: 02/07/2023] Open
Abstract
Background Molecular typing methods are critical for epidemiological investigations, facilitating disease outbreak detection and source identification. Study of the epidemiology of the emerging human pathogen Arcobacter butzleri is currently hampered by the lack of a subtyping method that is easily deployable in the context of routine epidemiological surveillance. In this study we describe a comparative genomic fingerprinting (CGF) method for high-resolution and high-throughput subtyping of A. butzleri. Comparative analysis of the genome sequences of eleven A. butzleri strains, including eight strains newly sequenced as part of this project, was employed to identify accessory genes suitable for generating unique genetic fingerprints for high-resolution subtyping based on gene presence or absence within a strain. Results A set of eighty-three accessory genes was used to examine the population structure of a dataset comprised of isolates from various sources, including human and non-human animals, sewage, and river water (n=156). A streamlined assay (CGF40) based on a subset of 40 genes was subsequently developed through marker optimization. High levels of profile diversity (121 distinct profiles) were observed among the 156 isolates in the dataset, and a high Simpson’s Index of Diversity (ID) observed (ID > 0.969) indicate that the CGF40 assay possesses high discriminatory power. At the same time, our observation that 115 isolates in this dataset could be assigned to 29 clades with a profile similarity of 90% or greater indicates that the method can be used to identify clades comprised of genetically similar isolates. Conclusions The CGF40 assay described herein combines high resolution and repeatability with high throughput for the rapid characterization of A. butzleri strains. This assay will facilitate the study of the population structure and epidemiology of A. butzleri. Electronic supplementary material The online version of this article (doi:10.1186/s12866-015-0426-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Andrew L Webb
- Agriculture and Agri-Food Canada, 5403 - 1st Avenue S, Lethbridge, AB, Canada. .,Department of Biological Sciences, University of Lethbridge, Lethbridge, AB, Canada.
| | - Peter Kruczkiewicz
- Public Health Agency of Canada, Township Rd. 9-1, Lethbridge, AB, Canada.
| | - L Brent Selinger
- Department of Biological Sciences, University of Lethbridge, Lethbridge, AB, Canada.
| | - G Douglas Inglis
- Agriculture and Agri-Food Canada, 5403 - 1st Avenue S, Lethbridge, AB, Canada.
| | - Eduardo N Taboada
- Public Health Agency of Canada, Township Rd. 9-1, Lethbridge, AB, Canada.
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Arcobacter butzleri in sheep ricotta cheese at retail and related sources of contamination in an industrial dairy plant. Appl Environ Microbiol 2014; 80:7036-41. [PMID: 25192995 DOI: 10.1128/aem.02491-14] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
This study aimed to evaluate Arcobacter species contamination of industrial sheep ricotta cheese purchased at retail and to establish if the dairy plant environment may represent a source of contamination. A total of 32 sheep ricotta cheeses (1.5 kg/pack) packed in a modified atmosphere were purchased at retail, and 30 samples were collected in two sampling sessions performed in the cheese factory from surfaces in contact with food and from surfaces not in contact with food. Seven out of 32 samples (21.9%) of ricotta cheese collected at retail tested positive for Arcobacter butzleri at cultural examination; all positive samples were collected during the same sampling and belonged to the same batch. Ten surface samples (33.3%) collected in the dairy plant were positive for A. butzleri. Cluster analysis identified 32 pulsed-field gel electrophoresis (PFGE) patterns. The same PFGE pattern was isolated from more than one ricotta cheese sample, indicating a common source of contamination, while more PFGE patterns could be isolated in single samples, indicating different sources of contamination. The results of the environmental sampling showed that A. butzleri may be commonly isolated from the dairy processing plant investigated and may survive over time, as confirmed by the isolation of the same PFGE pattern in different industrial plant surface samples. Floor contamination may represent a source of A. butzleri spread to different areas of the dairy plant, as demonstrated by isolation of the same PFGE pattern in different production areas. Isolation of the same PFGE pattern from surface samples in the dairy plant and from ricotta cheese purchased at retail showed that plant surfaces may represent a source of A. butzleri postprocessing contamination in cheeses produced in industrial dairy plants.
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