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Wang Y, Meng F, Deng X, Yang Y, Li S, Jiao X, Li S, Liu M. Genomic epidemiology of hypervirulent Listeria monocytogenes CC619: Population structure, phylodynamics and virulence. Microbiol Res 2024; 280:127591. [PMID: 38181481 DOI: 10.1016/j.micres.2023.127591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 12/07/2023] [Accepted: 12/18/2023] [Indexed: 01/07/2024]
Abstract
Listeria monocytogenes is a ubiquitous foodborne pathogen causing human and animal listeriosis with high mortality. Neurological and maternal-neonatal listeriosis outbreaks in Europe and the United States were frequently associated with clonal complexes CC1, CC2 and CC6 harboring Listeria Pathogenicity Island-1 (LIPI-1), as well as CC4 carrying both LIPI-1 and LIPI-4. However, human listeriosis in China was predominantly linked to CC87 and CC619 from serotype 1/2b. To understand the genetic evolution and distribution patterns of CC619, we characterized the epidemic history, population structure, and transmission feature of CC619 strains through analysis of 49,421 L. monocytogenes genomes globally. We found that CC619 was uniquely distributed in China, and closely related with perinatal infection. As CC619 strains were being mainly isolated from livestock and poultry products, we hypothesized that pigs and live chicken were the reservoirs of CC619. Importantly, all CC619 strains not only harbored the intact LIPI-1 and LIPI-4, but these also carried LIPI-3 that could facilitate host colonization and invasion. The deficiency of LIPI-3 or LIPI-4 markedly decreased L. monocytogenes colonization capacity in a model of intragastric infection in the mouse. Altogether, our findings suggest that the hypervirulent CC619 harboring three pathogenicity islands LIPI-1, LIPI-3 and LIPI-4 is a putatively persistent population in various foods, environment, and human population, warranting the further research for deciphering its pathogenicity and strengthening epidemiological surveillance.
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Affiliation(s)
- Yiqian Wang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China; College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Fanzeng Meng
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China
| | - Xia Deng
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Yuheng Yang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China
| | - Shaowen Li
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Xin'an Jiao
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China
| | - Shaoting Li
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, China.
| | - Mei Liu
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China.
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Hong S, Moon JS, Yoon SS, Kim HY, Lee YJ. Genetic and Phenotypic Diversity of Listeria monocytogenes in Pig Slaughterhouses in Korea. Foodborne Pathog Dis 2024; 21:1-9. [PMID: 37819680 DOI: 10.1089/fpd.2023.0053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023] Open
Abstract
Listeria monocytogenes is a foodborne pathogen that has variable subtypes associated with human listeriosis and occurs in food and processing environments. This study was conducted to provide the genetic and phenotypic characterization of L. monocytogenes in pig carcasses and environments of slaughterhouses in Korea. A total of 22 L. monocytogenes were isolated from eight of 26 pig slaughterhouses between 2020 and 2022, and the most common serotype was 1/2c (40.9%), followed by serotypes 1/2b (31.8%) and 1/2a (27.3%). The isolates showed a significantly high prevalence of virulence genes located in Listeria pathogenicity island-1 (LIPI-1) and internalins (90.9-100%; p < 0.05). However, the prevalence rates of llsX, ptsA, and stress survival islet-1 (SSI-1) located in LIPI-3, LIPI-4, and SSI were only 9.1%, 22.7%, and 31.8%, respectively. In addition, among the epidemic clones (EC), ECI, ECII, ECIII, and ECV, only one isolate was represented as ECV. Isolates identified from the same slaughterhouses were divided into two or more pulsotypes, except for two slaughterhouses. Furthermore, the seven STs were classified into seven clonal complexes (CCs) (CC8, CC9, CC37, CC87, CC121, CC155, and CC288), and all CCs belonged to lineages I (31.8%) and II (68.1%). Interestingly, the isolates showed a high prevalence of oxacillin resistance (59.1%), and most isolates of the serotypes 1/2a and 1/2b exhibited oxacillin resistance, whereas only one of nine serotype 1/2c isolates exhibited oxacillin resistance. These results provide the genetic diversity of L. monocytogenes in pig carcasses and environments of slaughterhouses, and continuous monitoring will be helpful in predicting food safety risks.
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Affiliation(s)
- Serim Hong
- College of Veterinary Medicine and Zoonoses Research Institute, Kyungpook National University, Daegu, Republic of Korea
| | - Jin-San Moon
- Bacterial Disease Division, Animal and Plant Quarantine Agency, Gimcheon, Republic of Korea
| | - Soon-Seek Yoon
- Bacterial Disease Division, Animal and Plant Quarantine Agency, Gimcheon, Republic of Korea
| | - Ha-Young Kim
- Bacterial Disease Division, Animal and Plant Quarantine Agency, Gimcheon, Republic of Korea
| | - Young Ju Lee
- College of Veterinary Medicine and Zoonoses Research Institute, Kyungpook National University, Daegu, Republic of Korea
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Mejía L, Espinosa-Mata E, Freire AL, Zapata S, González-Candelas F. Listeria monocytogenes, a silent foodborne pathogen in Ecuador. Front Microbiol 2023; 14:1278860. [PMID: 38179446 PMCID: PMC10764610 DOI: 10.3389/fmicb.2023.1278860] [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] [Received: 08/17/2023] [Accepted: 11/23/2023] [Indexed: 01/06/2024] Open
Abstract
Listeria monocytogenes is a foodborne pathogen that can produce serious, even fatal, infections. Among other foods, it can be found in unpasteurized dairy and ready-to-eat products. Surveillance of L. monocytogenes is of great interest since sources of infection are difficult to determine due to the long incubation period, and because the symptoms of listeriosis are similar to other diseases. We performed a genomic study of L. monocytogenes isolated from fresh cheeses and clinical samples from Ecuador. Sixty-five isolates were evaluated and sequenced, 14 isolates from cheese samples and 20 from clinical listeriosis cases from the National Institute of National Institute of Public Health Research, and 31 isolates from artisanal cheese samples from 8 provinces. All isolates exhibited heterogeneous patterns of the presence of pathogenicity islands. All isolates exhibited at least 4 genes from LIPI-1, but all references (26 L. monocytogenes closed genomes available in the NCBI database) showed the complete island, which encompasses 5 genes but is present in only two Ecuadorian isolates. Most isolates lacked gene actA. Genes from LIPI-2 were absent in all isolates. LIPI-3 and LIPI-4 were present in only a few references and isolates. With respect to the stress survival islets, our samples either presented SSI-1 or SSI-F2365, except for one isolate that presented SSI-F2365 and also one gene from SSI-1. None of the samples presented SSI-2. The predominant ST (sequence type) was ST2 (84.62% 55/65), and the only ST found in food (93.33% 42/45) and clinical samples (65% 13/20). Isolates were not grouped according to their sampling origin, date, or place in a phylogenetic tree obtained from the core alignment. The presence of ST2 in food and clinical samples, with high genomic similarity, suggests a foodborne infection risk linked to the consumption of fresh cheeses in Ecuador.
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Affiliation(s)
- Lorena Mejía
- Colegio de Ciencias Biológicas y Ambientales, Instituto de Microbiología, Universidad San Francisco de Quito USFQ, Quito, Ecuador
- Institute for Integrative Systems Biology, University of Valencia, Valencia, Spain
- Joint Research Unit “Infection and Public Health” FISABIO-University of Valencia, Valencia, Spain
| | - Estefanía Espinosa-Mata
- Colegio de Ciencias Biológicas y Ambientales, Instituto de Microbiología, Universidad San Francisco de Quito USFQ, Quito, Ecuador
| | - Ana Lucía Freire
- Colegio de Ciencias Biológicas y Ambientales, Instituto de Microbiología, Universidad San Francisco de Quito USFQ, Quito, Ecuador
| | - Sonia Zapata
- Colegio de Ciencias Biológicas y Ambientales, Instituto de Microbiología, Universidad San Francisco de Quito USFQ, Quito, Ecuador
| | - Fernando González-Candelas
- Institute for Integrative Systems Biology, University of Valencia, Valencia, Spain
- Joint Research Unit “Infection and Public Health” FISABIO-University of Valencia, Valencia, Spain
- CIBER (Centro de Investigación Biomédica en Red) in Epidemiology and Public Health, Valencia, Spain
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Guidi F, Centorotola G, Chiaverini A, Iannetti L, Schirone M, Visciano P, Cornacchia A, Scattolini S, Pomilio F, D'Alterio N, Torresi M. The Slaughterhouse as Hotspot of CC1 and CC6 Listeria monocytogenes Strains with Hypervirulent Profiles in an Integrated Poultry Chain of Italy. Microorganisms 2023; 11:1543. [PMID: 37375045 DOI: 10.3390/microorganisms11061543] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/24/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
In Europe, very few studies are available regarding the diversity of Listeria monocytogenes (L. monocytogenes) clonal complexes (CCs) and sequence types (ST) in poultry and on the related typing of isolates using whole genome sequencing (WGS). In this study, we used a WGS approach to type 122 L. monocytogenes strains isolated from chicken neck skin samples collected in two different slaughterhouses of an integrated Italian poultry company. The studied strains were classified into five CCs: CC1-ST1 (21.3%), CC6-ST6 (22.9%), CC9-ST9 (44.2%), CC121-ST121 (10.6%) and CC193-ST193 (0.8%). CC1 and CC6 strains presented a virulence gene profile composed of 60 virulence genes and including the Listeria Pathogenicity Island 3, aut_IVb, gltA and gltB. According to cgMLST and SNPs analysis, long-term persistent clusters belonging to CC1 and CC6 were found in one of the two slaughterhouses. The reasons mediating the persistence of these CCs (up to 20 months) remain to be elucidated, and may involve the presence and the expression of stress response and environmental adaptation genes including heavy metals resistance genes (cadAC, arsBC, CsoR-copA-copZ), multidrug efflux pumps (mrpABCEF, EmrB, mepA, bmrA, bmr3, norm), cold-shock tolerance (cspD) and biofilm-formation determinants (lmo0673, lmo2504, luxS, recO). These findings indicated a serious risk of poultry finished products contamination with hypervirulent L. monocytogenes clones and raised concern for the consumer health. In addition to the AMR genes norB, mprF, lin and fosX, ubiquitous in L. monocytogenes strains, we also identified parC for quinolones, msrA for macrolides and tetA for tetracyclines. Although the phenotypical expression of these AMR genes was not tested, none of them is known to confer resistance to the primary antibiotics used to treat listeriosis The obtained results increase the data on the L. monocytogenes clones circulating in Italy and in particular in the poultry chain.
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Affiliation(s)
- Fabrizia Guidi
- Istituto Zooprofilattico Sperimentale Dell'abruzzo e del Molise "G. Caporale", Via Campo Boario, 64100 Teramo, Italy
| | - Gabriella Centorotola
- Istituto Zooprofilattico Sperimentale Dell'abruzzo e del Molise "G. Caporale", Via Campo Boario, 64100 Teramo, Italy
| | - Alexandra Chiaverini
- Istituto Zooprofilattico Sperimentale Dell'abruzzo e del Molise "G. Caporale", Via Campo Boario, 64100 Teramo, Italy
| | - Luigi Iannetti
- Istituto Zooprofilattico Sperimentale Dell'abruzzo e del Molise "G. Caporale", Via Campo Boario, 64100 Teramo, Italy
| | - Maria Schirone
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via R. Balzarini, 1, 64100 Teramo, Italy
| | - Pierina Visciano
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, Via R. Balzarini, 1, 64100 Teramo, Italy
| | - Alessandra Cornacchia
- Istituto Zooprofilattico Sperimentale Dell'abruzzo e del Molise "G. Caporale", Via Campo Boario, 64100 Teramo, Italy
| | - Silvia Scattolini
- Istituto Zooprofilattico Sperimentale Dell'abruzzo e del Molise "G. Caporale", Via Campo Boario, 64100 Teramo, Italy
| | - Francesco Pomilio
- Istituto Zooprofilattico Sperimentale Dell'abruzzo e del Molise "G. Caporale", Via Campo Boario, 64100 Teramo, Italy
| | - Nicola D'Alterio
- Istituto Zooprofilattico Sperimentale Dell'abruzzo e del Molise "G. Caporale", Via Campo Boario, 64100 Teramo, Italy
| | - Marina Torresi
- Istituto Zooprofilattico Sperimentale Dell'abruzzo e del Molise "G. Caporale", Via Campo Boario, 64100 Teramo, Italy
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Lake FB, van Overbeek LS, Baars JJP, Abee T, den Besten HMW. Variability in growth and biofilm formation of Listeria monocytogenes in Agaricus bisporus mushroom products. Food Res Int 2023; 165:112488. [PMID: 36869500 DOI: 10.1016/j.foodres.2023.112488] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 11/27/2022] [Accepted: 01/13/2023] [Indexed: 01/27/2023]
Abstract
Foods and food production environments can be contaminated with Listeria monocytogenes and may support growth of this foodborne pathogen. This study aims to characterize the growth and biofilm formation of sixteen L. monocytogenes strains, isolated from mushroom production and processing environments, in filter-sterilized mushroom medium. Strain performance was compared to twelve L. monocytogenes strains isolated from other sources including food and human isolates. All twenty-eight L. monocytogenes strains showed rather similar growth performance at 20 °C in mushroom medium, and also significant biofilm formation was observed for all strains. HPLC analysis revealed the presence of mannitol, trehalose, glucose, fructose and glycerol, that were all metabolized by L. monocytogenes, except mannitol, in line with the inability of L. monocytogenes to metabolize this carbohydrate. Additionally, the growing behavior of L. monocytogenes was tested on whole, sliced and smashed mushroom products to quantify performance in the presence of product-associated microbiota. A significant increase of L. monocytogenes was observed with higher increase of counts when the mushroom products were more damaged, even with the presence of high background microbiota counts. This study demonstrated that L. monocytogenes grows well in mushroom products, even when the background microbiota is high, highlighting the importance to control (re)contamination of mushrooms.
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Affiliation(s)
- Frank B Lake
- Food Microbiology, Wageningen University and Research, Bornse Weilanden 9, 6708 WG Wageningen, the Netherlands
| | - Leo S van Overbeek
- Biointeractions and Plant Health, Wageningen Plant Research, Wageningen University and Research, Droevendaalsesteeg 1, 6708 PB Wageningen, the Netherlands
| | - Johan J P Baars
- Plant Breeding, Wageningen Plant Research, Wageningen University and Research, Droevendaalsesteeg 1, 6708 PB Wageningen, the Netherlands
| | - Tjakko Abee
- Food Microbiology, Wageningen University and Research, Bornse Weilanden 9, 6708 WG Wageningen, the Netherlands
| | - Heidy M W den Besten
- Food Microbiology, Wageningen University and Research, Bornse Weilanden 9, 6708 WG Wageningen, the Netherlands.
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Domínguez AV, Ledesma MC, Domínguez CI, Cisneros JM, Lepe JA, Smani Y. In Vitro and In Vivo Virulence Study of Listeria monocytogenes Isolated from the Andalusian Outbreak in 2019. Trop Med Infect Dis 2023; 8:tropicalmed8010058. [PMID: 36668965 PMCID: PMC9861481 DOI: 10.3390/tropicalmed8010058] [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] [Received: 12/07/2022] [Revised: 01/07/2023] [Accepted: 01/11/2023] [Indexed: 01/15/2023] Open
Abstract
In 2019, the biggest listeriosis outbreak by Listeria monocytogenes (Lm) in the South of Spain was reported, resulting in the death of three patients from 207 confirmed cases. One strain, belonging to clonal complex 388 (Lm CC388), has been isolated. We aimed to determine the Lm CC388 virulence in comparison with other highly virulent clones such as Lm CC1 and Lm CC4, in vitro and in vivo. Four L. monocytogenes strains (Lm CC388, Lm CC1, Lm CC4 and ATCC 19115) were used. Attachment to human lung epithelial cells (A549 cells) by these strains was characterized by adherence and invasion assays. Their cytotoxicities to A549 cells were evaluated by determining the cells viability. Their hemolysis activity was determined also. A murine intravenous infection model using these was performed to determine the concentration of bacteria in tissues and blood. Lm CC388 interaction with A549 cells is non-significantly higher than that of ATCC 19115 and Lm CC1, and lower than that of Lm CC4. Lm CC388 cytotoxicity is higher than that of ATCC 19115 and Lm CC1, and lower than that of Lm CC4. Moreover, Lm CC388 hemolysis activity is lower than that of the Lm CC4 strain, and higher than that of Lm CC1. Finally, in the murine intravenous infection model by Lm CC388, higher bacterial loads in tissues and at similar levels of Lm CC4 were observed. Although a lower rate of mortality of patients during the listeriosis outbreak in Spain in 2019 has been reported, the Lm CC388 strain has shown a greater or similar pathogenicity level in vitro and in an animal model, like Lm CC1 and Lm CC4.
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Affiliation(s)
- Andrea Vila Domínguez
- Institute of Biomedicine of Seville, IBiS, University Hospital Virgen del Rocio/CSIC/University of Seville, 41013 Sevilla, Spain
- Clinical Unit of Infectious Diseases, Microbiology and Parasitology, University Hospital Virgen del Rocio/CSIC/University of Seville, 41013 Sevilla, Spain
| | - Marta Carretero Ledesma
- Institute of Biomedicine of Seville, IBiS, University Hospital Virgen del Rocio/CSIC/University of Seville, 41013 Sevilla, Spain
- Clinical Unit of Infectious Diseases, Microbiology and Parasitology, University Hospital Virgen del Rocio/CSIC/University of Seville, 41013 Sevilla, Spain
| | - Carmen Infante Domínguez
- Institute of Biomedicine of Seville, IBiS, University Hospital Virgen del Rocio/CSIC/University of Seville, 41013 Sevilla, Spain
- Clinical Unit of Infectious Diseases, Microbiology and Parasitology, University Hospital Virgen del Rocio/CSIC/University of Seville, 41013 Sevilla, Spain
| | - José Miguel Cisneros
- Institute of Biomedicine of Seville, IBiS, University Hospital Virgen del Rocio/CSIC/University of Seville, 41013 Sevilla, Spain
- Clinical Unit of Infectious Diseases, Microbiology and Parasitology, University Hospital Virgen del Rocio/CSIC/University of Seville, 41013 Sevilla, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28222 Madrid, Spain
| | - Jose A. Lepe
- Institute of Biomedicine of Seville, IBiS, University Hospital Virgen del Rocio/CSIC/University of Seville, 41013 Sevilla, Spain
- Clinical Unit of Infectious Diseases, Microbiology and Parasitology, University Hospital Virgen del Rocio/CSIC/University of Seville, 41013 Sevilla, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28222 Madrid, Spain
- Correspondence: ; Tel.: +34-955923100
| | - Younes Smani
- Institute of Biomedicine of Seville, IBiS, University Hospital Virgen del Rocio/CSIC/University of Seville, 41013 Sevilla, Spain
- CIBER de Enfermedades Infecciosas (CIBERINFEC), Instituto de Salud Carlos III, 28222 Madrid, Spain
- Department of Molecular Biology and Biochemical Engineering, Andalusian Center of Developmental Biology, CSIC, University of Pablo de Olavide, 41013 Seville, Spain
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Lakicevic B, Jankovic V, Pietzka A, Ruppitsch W. Wholegenome sequencing as the gold standard approach for control of Listeria monocytogenes in the food chain. J Food Prot 2023; 86:100003. [PMID: 36916580 DOI: 10.1016/j.jfp.2022.10.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 10/05/2022] [Accepted: 10/19/2022] [Indexed: 12/23/2022]
Abstract
Listeria monocytogenes has been implicated in numerous outbreaks and related deaths of listeriosis. In food production, L. monocytogenes occurs in raw food material and above all, through postprocessing contamination. The use of next-generation sequencing technologies such as whole-genome sequencing (WGS) facilitates foodborne outbreak investigations, pathogen source tracking and tracing geographic distributions of different clonal complexes, routine microbiological/epidemiological surveillance of listeriosis, and quantitative microbial risk assessment. WGS can also be used to predict various genetic traits related to virulence, stress, or antimicrobial resistance, which can be of great benefit for improving food safety management as well as public health.
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Affiliation(s)
- Brankica Lakicevic
- Department for Microbiological and Molecular-biological Testing, Institute of Meat Hygiene and Technology, Belgrade, Serbia.
| | - Vesna Jankovic
- Department for Microbiological and Molecular-biological Testing, Institute of Meat Hygiene and Technology, Belgrade, Serbia
| | - Ariane Pietzka
- Institute of Medical Microbiology and Hygiene/National Reference Laboratory for Listeria Division for Public Health, Austrian Agency for Health and Food Safety, Graz, Austria
| | - Werner Ruppitsch
- Institute of Medical Microbiology and Hygiene Division for Public Health, Austrian Agency for Health and Food Safety, Vienna, Austria
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Pyz-Łukasik R, Paszkiewicz W, Kiełbus M, Ziomek M, Gondek M, Domaradzki P, Michalak K, Pietras-Ożga D. Genetic Diversity and Potential Virulence of Listeria monocytogenes Isolates Originating from Polish Artisanal Cheeses. Foods 2022; 11:foods11182805. [PMID: 36140933 PMCID: PMC9497517 DOI: 10.3390/foods11182805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 09/07/2022] [Accepted: 09/08/2022] [Indexed: 11/16/2022] Open
Abstract
Artisanal cheeses can be sources of Listeria monocytogenes and cause disease in humans. This bacterial pathogen is a species of diverse genotypic and phenotypic characteristics. The aim of the study was to characterize 32 isolates of L. monocytogenes isolated in 2014-2018 from artisanal cheeses. The isolates were characterized using whole genome sequencing and bioinformatics analysis. The artisanal cheese isolates resolved to four molecular groups: 46.9% of them to IIa (1/2a-3a), 31.2% to IVb (4ab-4b-4d-4e), 12.5% to IIc (1/2c-3c), and 9.4% to IIb (1/2b-3b-7). Two evolutionary lineages emerged: lineage II having 59.4% of the isolates and lineage I having 40.6%. The sequence types (ST) totaled 18: ST6 (15.6% of the isolates), ST2, ST20, ST26, and ST199 (each 9.4%), ST7 and ST9 (each 6.3%), and ST1, ST3, ST8, ST16, ST87, ST91, ST121, ST122, ST195, ST217, and ST580 (each 3.1%). There were 15 detected clonal complexes (CC): CC6 (15.6% of isolates), CC9 (12.5%), CC2, CC20, CC26, and CC199 (each 9.4%), CC7 and CC8 (each 6.3%), and CC1, CC3, CC14, CC87, CC121, CC195, and CC217 (each 3.1%). The isolates were varied in their virulence genes and the differences concerned: inl, actA, LIPI-3, ami, gtcA, aut, vip, and lntA.
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Affiliation(s)
- Renata Pyz-Łukasik
- Department of Food Hygiene of Animal Origin, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka 12, 20-033 Lublin, Poland
- Correspondence:
| | - Waldemar Paszkiewicz
- Department of Food Hygiene of Animal Origin, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka 12, 20-033 Lublin, Poland
| | - Michał Kiełbus
- Department of Experimental Hematooncology, Medical University of Lublin, Chodźki 1, 20-093 Lublin, Poland
| | - Monika Ziomek
- Department of Food Hygiene of Animal Origin, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka 12, 20-033 Lublin, Poland
| | - Michał Gondek
- Department of Food Hygiene of Animal Origin, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Akademicka 12, 20-033 Lublin, Poland
| | - Piotr Domaradzki
- Department of Quality Assessment and Processing of Animal Products, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland
| | - Katarzyna Michalak
- Department of Epizootiology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Głęboka 30, 20-612 Lublin, Poland
| | - Dorota Pietras-Ożga
- Department of Epizootiology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Głęboka 30, 20-612 Lublin, Poland
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9
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Burnett E, Kucerova Z, Freeman M, Kathariou S, Chen J, Smikle M. Whole-Genome Sequencing Reveals Multiple Subpopulations of Dominant and Persistent Lineage I Isolates of Listeria monocytogenes in Two Meat Processing Facilities during 2011-2015. Microorganisms 2022; 10:microorganisms10051070. [PMID: 35630512 PMCID: PMC9147069 DOI: 10.3390/microorganisms10051070] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 05/18/2022] [Accepted: 05/20/2022] [Indexed: 11/16/2022] Open
Abstract
Listeria monocytogenes is a foodborne pathogen with a highly clonal population structure comprising multiple phylogenetic sub-groups that can persist within food processing environments and contaminate food. The epidemiology of L. monocytogenes is well-described in some developed countries; however, little is known about the prevalence and population structure of this pathogen in food and food processing environments located in less developed regions. The aim of this study was to determine the genetic characteristics and clonal relatedness of L. monocytogenes that were isolated from two Jamaican meat processing facilities. Of the 37 isolates collected between 2011 and 2015, only a single lineage II isolate was recovered (serotype 1/2c), and the remaining were lineage I isolates representing serotypes 4b, 1/2b, 3b, and two untypeable isolates. Pulsed-field gel electrophoresis (PFGE) delineated isolates into seven pulsotypes, and whole-genome sequencing (WGS) categorized most isolates within one of three clonal complexes (CC): CC2 (N = 12), CC5 (N = 11), and CC288 (N = 11). Isolates representing CC1 (N = 2) and CC9 (N = 1) were also recovered. Virulence-associated genes such as inlA and the LIPI-3 cluster were detected in multiple isolates, along with the stress survival islet cluster-1 (SSI-1), and benzalkonium (bcrABC) and cadmium (cad1, cad2, cad4) resistance cassettes. Multiple isolates that belong to the same CC and matching PFGE patterns were isolated from food and the environment from both facilities across multiple years, suggesting the presence of persistent strains of L. monocytogenes, and/or constant re-entry of the pathogens into the facilities from common sources. These findings highlight the ability of lineage I isolates of L. monocytogenes to colonize, persist, and predominate within two meat-producing environments, and underscores the need for robust surveillance strategies to monitor and mitigate against these important foodborne pathogens.
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Affiliation(s)
- Elton Burnett
- Institute of Parasitology, McGill University, 2111 Lakeshore Road, Montreal, QC H9X 3V9, Canada
- Department of Microbiology, University of the West Indies, Mona, Kingston 7, Jamaica;
- Correspondence:
| | - Zuzana Kucerova
- Centers for Disease Control and Prevention (CDC), 1600 Clifton Road, Atlanta, GA 30329, USA; (Z.K.); (M.F.); (J.C.)
| | - Molly Freeman
- Centers for Disease Control and Prevention (CDC), 1600 Clifton Road, Atlanta, GA 30329, USA; (Z.K.); (M.F.); (J.C.)
| | - Sophia Kathariou
- Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Raleigh, NC 27695, USA;
| | - Jessica Chen
- Centers for Disease Control and Prevention (CDC), 1600 Clifton Road, Atlanta, GA 30329, USA; (Z.K.); (M.F.); (J.C.)
| | - Monica Smikle
- Department of Microbiology, University of the West Indies, Mona, Kingston 7, Jamaica;
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10
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Bagatella S, Tavares-Gomes L, Oevermann A. Listeria monocytogenes at the interface between ruminants and humans: A comparative pathology and pathogenesis review. Vet Pathol 2021; 59:186-210. [PMID: 34856818 DOI: 10.1177/03009858211052659] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The bacterium Listeria monocytogenes (Lm) is widely distributed in the environment as a saprophyte, but may turn into a lethal intracellular pathogen upon ingestion. Invasive infections occur in numerous species worldwide, but most commonly in humans and farmed ruminants, and manifest as distinct forms. Of those, neuroinfection is remarkably threatening due to its high mortality. Lm is widely studied not only as a pathogen but also as an essential model for intracellular infections and host-pathogen interactions. Many aspects of its ecology and pathogenesis, however, remain unclear and are rarely addressed in its natural hosts. This review highlights the heterogeneity and adaptability of Lm by summarizing its association with the environment, farm animals, and disease. It also provides current knowledge on key features of the pathology and (molecular) pathogenesis of various listeriosis forms in naturally susceptible species with a special focus on ruminants and on the neuroinvasive form of the disease. Moreover, knowledge gaps on pathomechanisms of listerial infections and relevant unexplored topics in Lm pathogenesis research are highlighted.
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Affiliation(s)
- Stefano Bagatella
- Division of Neurological Sciences, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Leticia Tavares-Gomes
- Division of Neurological Sciences, Vetsuisse Faculty, University of Bern, Bern, Switzerland
| | - Anna Oevermann
- Division of Neurological Sciences, Vetsuisse Faculty, University of Bern, Bern, Switzerland
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11
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Hussain FA, Dubert J, Elsherbini J, Murphy M, VanInsberghe D, Arevalo P, Kauffman K, Rodino-Janeiro BK, Gavin H, Gomez A, Lopatina A, Le Roux F, Polz MF. Rapid evolutionary turnover of mobile genetic elements drives bacterial resistance to phages. Science 2021; 374:488-492. [PMID: 34672730 DOI: 10.1126/science.abb1083] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Fatima Aysha Hussain
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Javier Dubert
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.,Department of Microbiology and Parasitology, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Joseph Elsherbini
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Mikayla Murphy
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - David VanInsberghe
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Philip Arevalo
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Kathryn Kauffman
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Bruno Kotska Rodino-Janeiro
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.,Division of Microbial Ecology, Department of Microbiology and Ecosystem Science, Center for Microbiology and Environmental Systems Science, University of Vienna, Vienna, Austria
| | - Hannah Gavin
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Annika Gomez
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Anna Lopatina
- Division of Microbial Ecology, Department of Microbiology and Ecosystem Science, Center for Microbiology and Environmental Systems Science, University of Vienna, Vienna, Austria
| | - Frédérique Le Roux
- Ifremer, Unité Physiologie Fonctionnelle des Organismes Marins, CS 10070, F-29280 Plouzané, France.,Sorbonne Universités, UPMC Paris 06, CNRS, UMR 8227, Integrative Biology of Marine Models, Station Biologique de Roscoff, CS 90074, F-29688 Roscoff Cedex, France
| | - Martin F Polz
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.,Division of Microbial Ecology, Department of Microbiology and Ecosystem Science, Center for Microbiology and Environmental Systems Science, University of Vienna, Vienna, Austria
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12
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Incidence, toxin gene profiling, antimicrobial susceptibility, and genetic diversity of Bacillus cereus isolated from quick-frozen food in China. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2020.110824] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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13
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Wang Y, Ji Q, Li S, Liu M. Prevalence and Genetic Diversity of Listeria monocytogenes Isolated From Retail Pork in Wuhan, China. Front Microbiol 2021; 12:620482. [PMID: 33767677 PMCID: PMC7986423 DOI: 10.3389/fmicb.2021.620482] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 02/15/2021] [Indexed: 11/25/2022] Open
Abstract
Listeria monocytogenes is a ubiquitous bacteria and causative agent of zoonotic listeriosis with high mortality. The consumption of contaminated animal-derived foods has been linked with both epidemic and sporadic listeriosis. In this work, a total of 64 L. monocytogenes isolates from 259 pork samples sold in 11 supermarket chains were identified and characterized by comparative whole-genome analysis. All isolates were delineated into eight clonal complexes (CCs), namely CC2, CC8, CC9, CC11, CC155, CC121, CC204, and CC619, spanning two lineages (I and II) and carrying 3–5 antibiotic-resistant genes (fosX, lnu, mprF, tetM, and dhfR). It is noted that Listeria pathogenicity island (LIPI)-1, LIPI-3, and LIPI-4 were distributed in all ST619 isolates from two supermarket chains that were closely related with clinical isolates (<40 SNP). Some of the isolates from different supermarket chains with 0 SNP difference indicated a common pork supply source. Notably, 57.81% of the strains carried types IB, IIA, or IIIB CRISPR-Cas system, CC121 isolates carried both types IB and IIA CRISPR-Cas systems, Cas proteins of CC155 isolates located between two CRISPR loci, each CC has unique organization of Cas proteins as well as CRISPR loci. CRISPR-Cas system-based subtyping improved discrimination of pork-derived L. monocytogenes isolates. Comparisons at the genome level contributed to understand the genetic diversities and variations among the isolates and provided insights into the genetic makeup and relatedness of these pathogens.
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Affiliation(s)
- Yiqian Wang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China.,College of Life Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Qiang Ji
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Shaowen Li
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
| | - Mei Liu
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, China
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14
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Bahrami A, Davis S, Mousavi Khaneghah A, Williams L. The efficiency of technologies used for epidemiological characterization of Listeria monocytogenes isolates : an update. Crit Rev Food Sci Nutr 2020; 62:1079-1091. [PMID: 33092402 DOI: 10.1080/10408398.2020.1835816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The characterization of pathogenic bacteria by providing information regarding the identification and source-tracking of the causes of outbreaks is vital for the epidemiological investigations of foodborne diseases. The knowledge of transmission of Listeria monocytogenes (L. monocytogenes) strains from the environment, directly or indirectly (through food processing facilities) to the final food products, due to the complexity of evaluating numerous, affecting parameters is quite limited. The food trade globalization also adds difficulties in tracking the association between the infection occurrence and causative pathogens, aiming to prevent their spread. The occurrence of listeriosis, a notifiable disease throughout the world, can either be sporadic or outbreak-related. Due to the importance of foodborne outbreaks from a public health aspect and its correspondence enormous economic losses, cross-linked surveillance studies regarding the contamination of foods by L. monocytogenes, besides identifying clusters and tracing the sources of infections on an international-scale to prevent and control L. monocytogenes outbreaks sounds very crucial. Contrary to the conventional typing methods, molecular-based techniques, such as whole-genome sequencing, owing to the capacity to discriminate L. monocytogenes strains down to single nucleotide differences, provide an accurate characterization of strains and tracking the causes of outbreaks. However, routinely using molecular-based methods depends on the required improvements in the affordability, proper timing, and preparing reliable, standardized bioinformatics facilities. This work was conducted to critically review the practical potential of diverse typing methods have been used for the characterization of L. monocytogenes and discuss how they might change the future of efforts for control of listeriosis.
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Affiliation(s)
- Akbar Bahrami
- Center for Excellence in Post-Harvest Technologies, North Carolina Agricultural, and Technical State University, North Carolina Research Campus, Kannapolis, North Carolina, USA
| | - Shurrita Davis
- Center for Excellence in Post-Harvest Technologies, North Carolina Agricultural, and Technical State University, North Carolina Research Campus, Kannapolis, North Carolina, USA
| | - Amin Mousavi Khaneghah
- Department of Food Science, Faculty of Food Engineering (FEA), University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Leonard Williams
- Center for Excellence in Post-Harvest Technologies, North Carolina Agricultural, and Technical State University, North Carolina Research Campus, Kannapolis, North Carolina, USA
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15
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Matle I, Mafuna T, Madoroba E, Mbatha KR, Magwedere K, Pierneef R. Population Structure of Non-ST6 Listeria monocytogenes Isolated in the Red Meat and Poultry Value Chain in South Africa. Microorganisms 2020; 8:microorganisms8081152. [PMID: 32751410 PMCID: PMC7464360 DOI: 10.3390/microorganisms8081152] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 06/22/2020] [Accepted: 06/28/2020] [Indexed: 12/17/2022] Open
Abstract
Meat products have been implicated in many listeriosis outbreaks globally, however there is a dearth of information on the diversity of L. monocytogenes isolates circulating in food products in South Africa. The aim of this study was to investigate the population structure of L. monocytogenes isolated in the meat value chain within the South African market. Based on whole-genome sequence analysis, a total of 217 isolates were classified into two main lineage groupings namely lineages I (n = 97; 44.7%) and II (n = 120; 55.3%). The lineage groups were further differentiated into IIa (n = 95, 43.8%), IVb (n = 69, 31.8%), IIb (n = 28, 12.9%), and IIc (n = 25, 11.5%) sero-groups. The most abundant sequence types (STs) were ST204 (n = 32, 14.7%), ST2 (n = 30, 13.8%), ST1 (n = 25, 11.5%), ST9 (n = 24, 11.1%), and ST321 (n = 21, 9.7%). In addition, 14 clonal complex (CCs) were identified with over-representation of CC1, CC3, and CC121 in "Processed Meat-Beef", "RTE-Poultry", and "Raw-Lamb" meat categories, respectively. Listeria pathogenic islands were present in 7.4% (LIPI-1), 21.7% (LIPI-3), and 1.8% (LIPI-4) of the isolates. Mutation leading to premature stop codons was detected in inlA virulence genes across isolates identified as ST121 and ST321. The findings of this study demonstrated a high-level of genomic diversity among L. monocytogenes isolates recovered across the meat value chain control points in South Africa.
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Affiliation(s)
- Itumeleng Matle
- Bacteriology Division, Agricultural Research Council-Onderstepoort Veterinary Research, Onderstepoort 0110, South Africa;
- Department of Agriculture and Animal Health, Science Campus, University of South Africa, Florida 1709, South Africa;
| | - Thendo Mafuna
- Centre for Bioinformatics and Computational Biology, Department of Biochemistry, Genetics and Microbiology, University of Pretoria, Pretoria 0028, South Africa;
- Biotechnology Platform, Agricultural Research Council-Onderstepoort Veterinary Research, Private Bag X 05, Onderstepoort 0110, Pretoria, South Africa
| | - Evelyn Madoroba
- Department of Biochemistry and Microbiology, Faculty of Science and Agriculture, University of Zululand, KwaDlangezwa 3886, South Africa;
| | - Khanyisile R. Mbatha
- Department of Agriculture and Animal Health, Science Campus, University of South Africa, Florida 1709, South Africa;
| | - Kudakwashe Magwedere
- Directorate of Veterinary Public Health, Department of Agriculture, Land Reform and Rural Development, Pretoria 0001, South Africa;
| | - Rian Pierneef
- Biotechnology Platform, Agricultural Research Council-Onderstepoort Veterinary Research, Private Bag X 05, Onderstepoort 0110, Pretoria, South Africa
- Correspondence: ; Tel.: +27-12-5299-356
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16
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Yin Y, Doijad S, Wang W, Lian K, Pan X, Koryciński I, Hu Y, Tan W, Ye S, Wang Z, Pan Z, Chakraborty T, Jiao X. Genetic Diversity of Listeria monocytogenes Isolates from Invasive Listeriosis in China. Foodborne Pathog Dis 2019; 17:215-227. [PMID: 32150465 DOI: 10.1089/fpd.2019.2693] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Listeria monocytogenes is a deadly foodborne pathogen, and infections can result in meningoencephalitis and sepsis with mortality rates of up to 30%. In this study, we performed comparative whole-genome analysis of 30 clinical isolates sequenced together with 32 previously sequenced clinical and food isolates from China. The data indicate that L. monocytogenes isolates belonging to the clonal complexes (CC) -1, -8, -9, -87, -121, and -155 are present in human clinical cases. The majority of isolates are from CC-87, 9, and 8 and overlap with those CCs previously reported on the basis of multilocus sequence typing for isolates from Chinese food products. Detailed genome analysis of isolates, representative of CCs in clinical and food products, revealed strong similarities both in their core- and accessory genomes indicating that they are highly related. When compared to genome sequences of isolates of a given CC worldwide, clinical isolates of China were distinct and clustered in unified clades. Our data indicate that epidemic clones of L. monocytogenes (CC-87, 9, and 8) with unusually high occurrence of plasmids are unique to China and suggest that common populations of L. monocytogenes clones are present in both clinical and food products in China.
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Affiliation(s)
- Yuelan Yin
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangzhou University, Yangzhou, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou University, Yangzhou, China.,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, China
| | - Swapnil Doijad
- Institute of Medical Microbiology, Justus-Liebig University, Giessen, Germany
| | - Weiping Wang
- Institute of Laboratory Medicine, Jinling Hospital, Nanjing University School of Medicine, Nanjing, People's Republic of China
| | - Kai Lian
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangzhou University, Yangzhou, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou University, Yangzhou, China.,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, China
| | - Xiuzhen Pan
- Department of Epidemiology, Research Institute for Medicine of Nanjing Command, Nanjing, China
| | - Iwo Koryciński
- Institute of Medical Microbiology, Justus-Liebig University, Giessen, Germany.,Department of Applied Microbiology, Institute of Microbiology, University of Warsaw, Warsaw, Poland
| | - Yachen Hu
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangzhou University, Yangzhou, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou University, Yangzhou, China.,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, China
| | - Weijun Tan
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangzhou University, Yangzhou, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou University, Yangzhou, China.,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, China
| | - Shuyang Ye
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangzhou University, Yangzhou, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou University, Yangzhou, China.,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, China
| | - Zegang Wang
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangzhou University, Yangzhou, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou University, Yangzhou, China.,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, China
| | - Zhiming Pan
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangzhou University, Yangzhou, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou University, Yangzhou, China.,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, China
| | - Trinad Chakraborty
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangzhou University, Yangzhou, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou University, Yangzhou, China.,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, China.,Institute of Medical Microbiology, Justus-Liebig University, Giessen, Germany
| | - Xin'an Jiao
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangzhou University, Yangzhou, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou University, Yangzhou, China.,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, China
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17
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Upham J, Chen S, Boutilier E, Hodges L, Eisebraun M, Croxen MA, Fortuna A, Mallo GV, Garduño RA. Potential Ad Hoc Markers of Persistence and Virulence in Canadian Listeria monocytogenes Food and Clinical Isolates. J Food Prot 2019; 82:1909-1921. [PMID: 31633427 DOI: 10.4315/0362-028x.jfp-19-028] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The Listeria monocytogenes gene inlA, encoding a surface virulence protein, was examined for the presence of premature stop codon (PMSC) mutations in 82 isolates obtained by the Canadian Food Inspection Agency (CFIA) from foods and food contact surfaces. These mutations were coanalyzed for the presence of stress survival islet 1 (SSI-1) and for the abilities of the isolates to invade Caco-2 intestinal epithelial cells and form biofilms on polystyrene. PMSC mutations were present in one-third of the isolates (predominantly those of serogroup 1/2a), and their presence was correlated with a noninvasive phenotype. The presence of SSI-1 and the ability to form biofilms were also linked to the 1/2a serogroup. Serogroup 4b isolates lacked inlA PMSC mutations and were invasive, but neither formed biofilms nor carried SSI-1. To expand upon these experimental findings, an in silico analysis was performed on L. monocytogenes genomes from Canadian databases of 278 food isolates and 607 clinical isolates. The prevalence of inlA PMSC mutations in genomes of food isolates was significantly higher (P < 0.0001) than that in clinical isolates. Also, a three-codon deletion in inlA associated with a hyperinvasive phenotype was more prevalent in genomes from clinical isolates (primarily of clonal complex 6, serogroup 4b) than in those from food isolates (P < 0.001). In contrast, SSI-1 was significantly overrepresented (P < 0.001) in genomes from food isolates. We propose the hypothesis that SSI-1 and inlA play a role in the evolution of Canadian L. monocytogenes strains into either a virulent (represented by serogroup 4b clinical isolates) or an environmentally persistent (represented by serogroup 1/2a food isolates) phenotype. The combined presence of SSI-1 and inlA PMSC mutations have potential for use as genetic markers for risk assessment when L. monocytogenes is recovered from foods, indicating low potential for pathogenesis.
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Affiliation(s)
- Jacqueline Upham
- Canadian Food Inspection Agency, Dartmouth Laboratory, Dartmouth, Nova Scotia, Canada B3B 1Y9
| | - Stephen Chen
- Canadian Food Inspection Agency, Dartmouth Laboratory, Dartmouth, Nova Scotia, Canada B3B 1Y9
| | - Elizabeth Boutilier
- Canadian Food Inspection Agency, Dartmouth Laboratory, Dartmouth, Nova Scotia, Canada B3B 1Y9
| | - Lisa Hodges
- Canadian Food Inspection Agency, Dartmouth Laboratory, Dartmouth, Nova Scotia, Canada B3B 1Y9
| | - Mikaela Eisebraun
- Canadian Food Inspection Agency, Dartmouth Laboratory, Dartmouth, Nova Scotia, Canada B3B 1Y9
| | - Matthew A Croxen
- British Columbia Centre for Disease Control, Vancouver, British Columbia, Canada V5Z 4R4
| | - Alex Fortuna
- Pathogen Preparedness and Test Development Unit, Public Health Ontario Laboratories, Toronto, Ontario, Canada M5G 1M1
| | - Gustavo V Mallo
- Pathogen Preparedness and Test Development Unit, Public Health Ontario Laboratories, Toronto, Ontario, Canada M5G 1M1
| | - Rafael A Garduño
- Canadian Food Inspection Agency, Dartmouth Laboratory, Dartmouth, Nova Scotia, Canada B3B 1Y9.,Department of Microbiology and Immunology, Dalhousie University, Halifax, Nova Scotia, Canada B3H 4R2
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18
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Tamburro M, Sammarco ML, Fanelli I, Ripabelli G. Characterization of Listeria monocytogenes serovar 1/2a, 1/2b, 1/2c and 4b by high resolution melting analysis for epidemiological investigations. Int J Food Microbiol 2019; 310:108289. [DOI: 10.1016/j.ijfoodmicro.2019.108289] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 05/24/2019] [Accepted: 08/04/2019] [Indexed: 02/07/2023]
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19
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Chen S, Meng F, Sun X, Yao H, Wang Y, Pan Z, Yin Y, Jiao X. Epidemiology of Human Listeriosis in China During 2008-2017. Foodborne Pathog Dis 2019; 17:119-125. [PMID: 31556722 DOI: 10.1089/fpd.2019.2683] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Listeria monocytogenes is a facultative, intracellular foodborne pathogen that causes listeriosis and is prevalent worldwide. However, our knowledge of this bacterium and the listeriosis it causes is still extremely limited until now. Therefore, this retrospective study of patients in mainland China over 10 years (2008-2017) was performed to better understand the demographic trends and clinical features of listeriosis in China. Both electronic and manual retrieval systems were used to collect the relevant literature on listeriosis in mainland China. A total of 759 cases were reported from 22 provinces. Among the clinical cases, septicemia was the most common presentation (49%), followed by central nervous system infection (25%). The overall case fatality rate was 18%, with a higher rate among neonatal patients (73%). In recent years, listeriosis has been reported annually and even peaked in 2014. The median age of nonperinatal cases was 36 years (range, 0-102), with a predominance of male cases (52%). Sporadic cases were frequent from March to May. Efforts to prevent and control the spread of listeriosis are required through further research and collaborative efforts to improve the capacities of clinical diagnosis and treatment.
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Affiliation(s)
- Sisi Chen
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangzhou University, Yangzhou, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, China.,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, China
| | - Fanzeng Meng
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangzhou University, Yangzhou, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, China.,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, China
| | - Xiaowen Sun
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangzhou University, Yangzhou, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, China.,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, China
| | - Hao Yao
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangzhou University, Yangzhou, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, China.,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, China
| | - Yuting Wang
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangzhou University, Yangzhou, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, China.,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, China
| | - Zhiming Pan
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangzhou University, Yangzhou, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, China.,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, China
| | - Yuelan Yin
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangzhou University, Yangzhou, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, China.,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, China
| | - Xin'an Jiao
- Jiangsu Key Laboratory of Zoonosis, Yangzhou University, Yangzhou, China.,Key Laboratory of Prevention and Control of Biological Hazard Factors (Animal Origin) for Agrifood Safety and Quality, Ministry of Agriculture and Rural Affairs of the People's Republic of China, Yangzhou University, Yangzhou, China.,Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, China.,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Disease and Zoonosis, Yangzhou University, Yangzhou, China
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20
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Molecular characterization of Listeria monocytogenes isolates from a small-scale meat processor in Montenegro, 2011-2014. Food Microbiol 2018; 79:116-122. [PMID: 30621866 DOI: 10.1016/j.fm.2018.12.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2018] [Revised: 11/29/2018] [Accepted: 12/04/2018] [Indexed: 12/31/2022]
Abstract
The presence of Listeria monocytogenes was evaluated in a small-scale meat processing facility in Montenegro during 2011-2014. L. monocytogenes isolates from traditional meat products and environmental swabs were subjected to a) molecular characterization b) serotyping by both multiplex PCR and next generation sequencing (NGS) c) potential antimicrobial resistance (AMR) was assessed by extraction of specific genes from NGS data and d) screening for the presence of some disinfectant resistance markers. Overall, traditional meat products were contaminated, most likely from incoming raw materials, with 4 major specific STs of L. monocytogenes (ST515, ST8, ST21, ST121) representing 4 clonal complexes (CC1, CC8, CC21, CC121) identified during the four-year period. These strains belonged to serogroup IIa which predominated, followed by IVb (ST515, CC1). The strains from environmental swabs belonged, exclusively, to ST21 and were isolated from cutting board and floor swabs in 2011. Furthermore, we found Tn6188, a novel transposon conferring tolerance to BC, to be specific to sequence type ST121. In addition, antimicrobial resistance genes mprF and fosX were present in clonal complexes CC21 and CC121, while complexes CC8 and CC1 exclusively harbored the mprF antimicrobial resistance gene.
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21
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Tamburro M, Sammarco ML, Ripabelli G. High resolution melting analysis for the characterization of lineage II Listeria monocytogenes serovars 1/2a and 1/2c based on single nucleotide polymorphisms identification within the Listeria Pathogenicity Island-1 and inlAB operon: a novel approach for epidemiological surveillance. J Appl Microbiol 2018; 125:1920-1937. [PMID: 30187619 DOI: 10.1111/jam.14100] [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] [Received: 01/22/2018] [Revised: 07/02/2018] [Accepted: 08/18/2018] [Indexed: 01/16/2023]
Abstract
AIMS A high resolution melting (HRM) assay was developed for characterizing lineage II Listeria monocytogenes based on the amplification and the melting profiles analysis of 81 fragments targeting the region from the prs to ldh loci, including the Listeria Pathogenicity Island-1 (LIPI-1) genes and the inlAB operon. METHODS AND RESULTS Real-time PCR and HRM protocols were standardized using 10 replicate assays from L. monocytogenes EGD-e reference strain (serovar 1/2a). Twenty wild-type isolates of serovar 1/2a and two of serovar 1/2c were tested, and differences between EGD-e strain and the wild-type isolates were defined if the melting temperature (Tm ) of an amplicon was not within the lower and the upper limits calculated from replicate testing on EGD-e. The analysis revealed 17 and 19 HRM profiles with respect to prs/LIPI-1/ldh and inlAB target regions (Simpson's Index of Diversity 0·979 and 0·983) respectively. The 1/2c cultures showed 98·1% similarity to melting characteristics with EGD-e, whilst 1/2a isolates had the greatest heterogeneity that was related to inlA, inlB and actA genes. Sequencing of amplicons generating different Tm values from EGD-e confirmed the presence of point mutations. CONCLUSIONS This method was useful for L. monocytogenes subtyping based on single nucleotide polymorphisms detection through the melting behaviour analysis of main virulence genes. SIGNIFICANCE AND IMPACT OF THE STUDY The study underlines the effectiveness of HRM in differentiating L. monocytogenes strains with high discriminatory power, thus rendering it useful for epidemiological surveillance.
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Affiliation(s)
- M Tamburro
- Department of Medicine and Health Sciences "Vincenzo Tiberio", University of Molise, Campobasso, Italy
| | - M L Sammarco
- Department of Medicine and Health Sciences "Vincenzo Tiberio", University of Molise, Campobasso, Italy
| | - G Ripabelli
- Department of Medicine and Health Sciences "Vincenzo Tiberio", University of Molise, Campobasso, Italy
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22
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Burall LS, Grim CJ, Mammel MK, Datta AR. A Comprehensive Evaluation of the Genetic Relatedness of Listeria monocytogenes Serotype 4b Variant Strains. Front Public Health 2017; 5:241. [PMID: 28955706 PMCID: PMC5601410 DOI: 10.3389/fpubh.2017.00241] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 08/23/2017] [Indexed: 01/10/2023] Open
Abstract
Recently, we have identified a link between four listeriosis incidents/outbreaks to a variant of Listeria monocytogenes (Lm) serotype 4b strains, 4bV. Although 4bV strains have been reported from clinical specimens as well as from foods, listeriosis outbreaks occurring in 2014–2016 were the first reported outbreaks involving 4bV in the USA. Since traditional typing methods do not detect members of this group, we undertook a systematic and retrospective analysis of all Lm in the NCBI WGS Sequence Read Archive database to investigate the burden of 4bV strains among all listeriosis cases. This analysis identified the presence of isolates causing sporadic cases as well as those associated with the aforementioned outbreaks, as determined by WGS and traditional epidemiology. In total, approximately 350 Lm 4bV strains were identified from multiple parts of the USA as well as from Australia and Chile, dating back to 2001. The genomic relatedness of these strains was compared using the CFSAN SNP Pipeline and multi-virulence-locus sequence typing (MVLST). Using the CFSAN Pipeline tool, the 4bV strains were found to group into seven clusters that were separate from 4b strains. All seven clades appeared to contain isolates from both clinical and non-clinical sources. Conversely, the MVLST analysis revealed that practically all of the strains belonged to a single clade, suggesting that 4bV strains from disparate geographic regions and sources are under varied selective pressure, restricting diversity across these six virulence loci while allowing more variability across the genome as a whole. Further evaluation of these 4bV strains identified genes potentially acquired from a lineage II source external to the lmo0733–lmo0739 region, as well as highly conserved SNPs unique to the 4bV strains when compared to those from other lineages. Taken together, these data suggest that 4bV strains have undergone adaptive responses to selective pressures that may enhance survival in the environment while maintaining the pathogenic potential of serotype 4b strains.
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Affiliation(s)
- Laurel S Burall
- Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, Laurel, MD, United States
| | - Christopher J Grim
- Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, Laurel, MD, United States
| | - Mark K Mammel
- Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, Laurel, MD, United States
| | - Atin R Datta
- Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, Laurel, MD, United States
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23
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Burall LS, Grim CJ, Datta AR. A clade of Listeria monocytogenes serotype 4b variant strains linked to recent listeriosis outbreaks associated with produce from a defined geographic region in the US. PLoS One 2017; 12:e0176912. [PMID: 28464038 PMCID: PMC5413027 DOI: 10.1371/journal.pone.0176912] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 04/19/2017] [Indexed: 11/19/2022] Open
Abstract
Four listeriosis incidences/outbreaks, spanning 19 months, have been linked to Listeria monocytogenes serotype 4b variant (4bV) strains. Three of these incidents can be linked to a defined geographical region, while the fourth is likely to be linked. In this study, whole genome sequencing (WGS) of strains from these incidents was used for genomic comparisons using two approached. The first was JSpecies tetramer, which analyzed tetranucleotide frequency to assess relatedness. The second, the CFSAN SNP Pipeline, was used to perform WGS SNP analyses against three different reference genomes to evaluate relatedness by SNP distances. In each case, unrelated strains were included as controls. The analyses showed that strains from these incidents form a highly related clade with SNP differences of ≤101 within the clade and >9000 against other strains. Multi-Virulence-Locus Sequence Typing, a third standardized approach for evaluation relatedness, was used to assess the genetic drift in six conserved, known virulence loci and showed a different clustering pattern indicating possible differences in selection pressure experienced by these genes. These data suggest a high degree of relatedness among these 4bV strains linked to a defined geographic region and also highlight the possibility of alterations related to adaptation and virulence.
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Affiliation(s)
- Laurel S. Burall
- Center for Food Safety and Applied Nutrition, Food and Drug Administration Laurel, Maryland, United States of America
- * E-mail: (LSB); (ARD)
| | - Christopher J. Grim
- Center for Food Safety and Applied Nutrition, Food and Drug Administration Laurel, Maryland, United States of America
| | - Atin R. Datta
- Center for Food Safety and Applied Nutrition, Food and Drug Administration Laurel, Maryland, United States of America
- * E-mail: (LSB); (ARD)
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24
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Jennison AV, Masson JJ, Fang NX, Graham RM, Bradbury MI, Fegan N, Gobius KS, Graham TM, Guglielmino CJ, Brown JL, Fox EM. Analysis of the Listeria monocytogenes Population Structure among Isolates from 1931 to 2015 in Australia. Front Microbiol 2017; 8:603. [PMID: 28428781 PMCID: PMC5382192 DOI: 10.3389/fmicb.2017.00603] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Accepted: 03/23/2017] [Indexed: 01/01/2023] Open
Abstract
Listeriosis remains among the most important bacterial illnesses, with a high associated mortality rate. Efforts to control listeriosis require detailed knowledge of the epidemiology of the disease itself, and its etiological bacterium, Listeria monocytogenes. In this study we provide an in-depth analysis of the epidemiology of 224 L. monocytogenes isolates from Australian clinical and non-clinical sources. Non-human sources included meat, dairy, seafood, fruit, and vegetables, along with animal and environmental isolates. Serotyping, Multi-Locus Sequence Typing, and analysis of inlA gene sequence were performed. Serogroups IIA, IIB, and IVB comprised 94% of all isolates, with IVB over-represented among clinical isolates. Serogroup IIA was the most common among dairy and meat isolates. Lineage I isolates were most common among clinical isolates, and 52% of clinical isolates belonged to ST1. Overall 39 STs were identified in this study, with ST1 and ST3 containing the largest numbers of L. monocytogenes isolates. These STs comprised 40% of the total isolates (n = 90), and both harbored isolates from clinical and non-clinical sources. ST204 was the third most common ST. The high prevalence of this group among L. monocytogenes populations has not been reported outside Australia. Twenty-seven percent of the STs in this study contained exclusively clinical isolates. Analysis of the virulence protein InlA among isolates in this study identified a truncated form of the protein among isolates from ST121 and ST325. The ST325 group contained a previously unreported novel mutation leading to production of a 93 amino acid protein. This study provides insights in the population structure of L. monocytogenes isolated in Australia, which will contribute to public health knowledge relating to this important human pathogen.
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Affiliation(s)
- Amy V Jennison
- Public Health Microbiology, Public and Environmental Health, Queensland Health, Forensic and Scientific Services, BrisbaneQLD, Australia
| | - Jesse J Masson
- Commonwealth Scientific and Industrial Research Organisation - Agriculture and Food, WerribeeVIC, Australia
| | - Ning-Xia Fang
- Public Health Microbiology, Public and Environmental Health, Queensland Health, Forensic and Scientific Services, BrisbaneQLD, Australia
| | - Rikki M Graham
- Public Health Microbiology, Public and Environmental Health, Queensland Health, Forensic and Scientific Services, BrisbaneQLD, Australia
| | - Mark I Bradbury
- Commonwealth Scientific and Industrial Research Organisation - Agriculture and Food, SydneyNSW, Australia
| | - Narelle Fegan
- Commonwealth Scientific and Industrial Research Organisation - Agriculture and Food, WerribeeVIC, Australia
| | - Kari S Gobius
- Commonwealth Scientific and Industrial Research Organisation - Agriculture and Food, WerribeeVIC, Australia
| | - Trudy M Graham
- Public Health Microbiology, Public and Environmental Health, Queensland Health, Forensic and Scientific Services, BrisbaneQLD, Australia
| | - Christine J Guglielmino
- Public Health Microbiology, Public and Environmental Health, Queensland Health, Forensic and Scientific Services, BrisbaneQLD, Australia
| | - Janelle L Brown
- Commonwealth Scientific and Industrial Research Organisation - Agriculture and Food, SydneyNSW, Australia
| | - Edward M Fox
- Commonwealth Scientific and Industrial Research Organisation - Agriculture and Food, WerribeeVIC, Australia
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25
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Takahashi H, Iwakawa A, Ohshima C, Kyoui D, Kumano S, Kuda T, Kimura B. A rapid typing method for Listeria monocytogenes based on high-throughput multilocus sequence typing (Hi-MLST). Int J Food Microbiol 2017; 243:84-89. [DOI: 10.1016/j.ijfoodmicro.2016.12.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 11/14/2016] [Accepted: 12/13/2016] [Indexed: 11/24/2022]
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26
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Camargo AC, Woodward JJ, Nero LA. The Continuous Challenge of Characterizing the Foodborne Pathogen Listeria monocytogenes. Foodborne Pathog Dis 2016; 13:405-16. [PMID: 27120361 DOI: 10.1089/fpd.2015.2115] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Listeria monocytogenes is an important foodborne pathogen commonly isolated from food processing environments and food products. This organism can multiply at refrigeration temperatures, form biofilms on different materials and under various conditions, resist a range of environmental stresses, and contaminate food products by cross-contamination. L. monocytogenes is recognized as the causative agent of listeriosis, a serious disease that affects mainly individuals from high-risk groups, such as pregnant women, newborns, the elderly, and immunocompromised individuals. Listeriosis can be considered a disease that has emerged along with changing eating habits and large-scale industrial food processing. This disease causes losses of billions of dollars every year with recalls of contaminated foods and patient medical treatment expenses. In addition to the immune status of the host and the infecting dose, the virulence potential of each strain is crucial for the development of disease symptoms. While many isolates are naturally virulent, other isolates are avirulent and unable to cause disease; this may vary according to the presence of molecular determinants associated with virulence. In the last decade, the characterization of genetic profiles through the use of molecular methods has helped track and demonstrate the genetic diversity among L. monocytogenes isolates obtained from various sources. The purposes of this review were to summarize the main methods used for isolation, identification, and typing of L. monocytogenes and also describe its most relevant virulence characteristics.
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Affiliation(s)
- Anderson Carlos Camargo
- 1 Departamento de Veterinária, Universidade Federal de Viçosa , Viçosa, Minas Gerais, Brazil
| | | | - Luís Augusto Nero
- 1 Departamento de Veterinária, Universidade Federal de Viçosa , Viçosa, Minas Gerais, Brazil
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