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Ferheen I, Spurio R, Marcheggiani S. Vehicle transmission of antibiotic-resistant pathogens mediated by plastic debris in aquatic ecosystems. iScience 2024; 27:110026. [PMID: 38883843 PMCID: PMC11179577 DOI: 10.1016/j.isci.2024.110026] [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: 10/16/2023] [Revised: 02/27/2024] [Accepted: 05/16/2024] [Indexed: 06/18/2024] Open
Abstract
Plastic materials are emerging environmental pollutants acting as potential vehicles for accumulation and spread of multidrug-resistant bacteria. The current study investigates the role of plastics in favoring the dispersal of specific pathogens and their associated antibiotic resistant genes (ARGs). Artificial plastic substrates (APSs) were submerged in seven sampling points of Lake Bracciano (Italy), and after one-month both APSs and raw water (RW) samples were collected. Through the combination of standard microbiological and biochemical techniques, 272 bacterial strains were identified and characterized for antibiotic resistant profiling. Our results revealed a notable difference in terms of diversity and abundance of pathogenic bacteria recovered from APSs, compared to RW. In addition, higher resistance patterns were detected in APSs isolates, with frequent appearance of relevant ARGs and class 1 integrons. These findings reinforce the idea that plastic materials in aquatic ecosystems serve as a reservoir for superbugs, significantly contributing to the dissemination of ARGs.
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Affiliation(s)
- Ifra Ferheen
- School of Biosciences and Veterinary Medicine, University of Camerino, 62032 Camerino, Italy
| | - Roberto Spurio
- School of Biosciences and Veterinary Medicine, University of Camerino, 62032 Camerino, Italy
| | - Stefania Marcheggiani
- Department of Environment and Primary Prevention, National Institute of Health, 00161 Rome, Italy
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2
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Intriago P, Montiel B, Valarezo M, Romero X, Arteaga K, Cercado N, Burgos M, Shinn AP, Montenegro A, Medina A, Gallardo J. Las Bolitas Syndrome in Penaeus vannamei Hatcheries in Latin America. Microorganisms 2024; 12:1186. [PMID: 38930568 PMCID: PMC11205452 DOI: 10.3390/microorganisms12061186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Revised: 06/05/2024] [Accepted: 06/10/2024] [Indexed: 06/28/2024] Open
Abstract
In September 2023, several hatcheries in Latin America experienced significant mortality rates, up to 90%, in zoea stage 2 of Penaeus vannamei. Observations of fresh mounts revealed structures resembling lipid droplets, similar to those seen in a condition known as "las bolitas syndrome". Routine histopathological examinations identified detached cells and tissues in the digestive tracts of affected zoea, contrasting with the typical algal cell contents seen in healthy zoea. Polymerase chain reaction (PCR) testing for over 20 known shrimp pathogens indicated minimal differences between diseased and healthy batches. Both groups tested negative for acute hepatopancreatic necrosis disease (AHPND) but positive for Vibrio species and Rickettsia-like bacteria in the diseased samples. Histological analyses of the affected zoea revealed characteristic tissue degeneration in the hepatopancreas, forming spheres that eventually migrated into the upper gut, midgut, and midgut caeca, a pathology identified as bolitas syndrome (BS). Microbiological assessments revealed Vibrio species at concentrations of 106 CFU zoea/g in affected zoea, approximately two orders of magnitude higher than in healthy zoea. Bacterial isolation from both healthy and BS-affected zoea on thiosulphate-citrate-bile salts-sucrose (TCBS) agar and CHROMagar™ (Paris, France), followed by identification using API 20E, identified six strains of Vibrio alginolyticus. Despite similarities to "las bolitas syndrome" in fresh mounts, distinct histopathological differences were noted, particularly the presence of sloughed cells in the intestines and variations in hepatopancreatic lobes. This study highlights the critical need for further research to fully understand the etiology and pathology of bolitas syndrome in zoea stage 2 of P. vannamei to develop effective mitigation strategies for hatchery operations.
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Affiliation(s)
- Pablo Intriago
- South Florida Farming Corporation, 13811 Old Sheridan St, Southwest Ranches, FL 33330, USA
- South Florida Farming Laboratory, Av. Miguel Yunez, Km 14.5 via a Samborondón, Almax 3 Etapa 1- Lote 3 Bodega 2, Samborondón, Guayas, Ecuador (M.B.)
| | - Bolivar Montiel
- South Florida Farming Laboratory, Av. Miguel Yunez, Km 14.5 via a Samborondón, Almax 3 Etapa 1- Lote 3 Bodega 2, Samborondón, Guayas, Ecuador (M.B.)
| | - Mauricio Valarezo
- South Florida Farming Laboratory, Av. Miguel Yunez, Km 14.5 via a Samborondón, Almax 3 Etapa 1- Lote 3 Bodega 2, Samborondón, Guayas, Ecuador (M.B.)
| | - Xavier Romero
- Ficus 302 y Antonio Sanchez, Calle 11 N-O, Guayaquil, Ecuador
| | - Kelly Arteaga
- South Florida Farming Laboratory, Av. Miguel Yunez, Km 14.5 via a Samborondón, Almax 3 Etapa 1- Lote 3 Bodega 2, Samborondón, Guayas, Ecuador (M.B.)
| | - Nicole Cercado
- South Florida Farming Laboratory, Av. Miguel Yunez, Km 14.5 via a Samborondón, Almax 3 Etapa 1- Lote 3 Bodega 2, Samborondón, Guayas, Ecuador (M.B.)
| | - Milena Burgos
- South Florida Farming Laboratory, Av. Miguel Yunez, Km 14.5 via a Samborondón, Almax 3 Etapa 1- Lote 3 Bodega 2, Samborondón, Guayas, Ecuador (M.B.)
| | - Andrew P. Shinn
- INVE (Thailand), 471 Bond Street, Bangpood, Pakkred, Nonthaburi 11120, Thailand
- Centre for Sustainable Tropical Fisheries and Aquaculture, James Cook University, Townsville, QLD 4811, Australia
| | - Alejandra Montenegro
- South Florida Farming Laboratory, Av. Miguel Yunez, Km 14.5 via a Samborondón, Almax 3 Etapa 1- Lote 3 Bodega 2, Samborondón, Guayas, Ecuador (M.B.)
| | - Andrés Medina
- South Florida Farming Laboratory, Av. Miguel Yunez, Km 14.5 via a Samborondón, Almax 3 Etapa 1- Lote 3 Bodega 2, Samborondón, Guayas, Ecuador (M.B.)
| | - Jennifer Gallardo
- South Florida Farming Laboratory, Av. Miguel Yunez, Km 14.5 via a Samborondón, Almax 3 Etapa 1- Lote 3 Bodega 2, Samborondón, Guayas, Ecuador (M.B.)
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3
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Stratev D, Fasulkova R, Krumova-Valcheva G. Incidence, virulence genes and antimicrobial resistance of Vibrio parahaemolyticus isolated from seafood. Microb Pathog 2023; 177:106050. [PMID: 36842516 DOI: 10.1016/j.micpath.2023.106050] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 02/24/2023] [Accepted: 02/24/2023] [Indexed: 02/28/2023]
Abstract
The objective of the study was to establish the incidence, pathogenic factors and antimicrobial resistance of Vibrio parahaemolyticus in seafood from retail shops in Bulgaria. A hundred and eighty samples of sea fish, mussels, oysters, veined rapa whelks, shrimps and squids were included in the study. PCR methods were used to identify V. parahaemolyticus and prove tdh and trh genes. Antimicrobial resistance was established by disc diffusion method, and MAR index was calculated. The results proved the presence of V. parahaemolyticus in 24% (44/180) of the seafood samples. tdh-positive V. parahaemolyticus was not found, while the trh gene was detected in one veined rapa whelk isolate. All isolates were susceptible to Sulfamethoxazole/trimethoprim, Tetracycline, Gentamycin, Amoxicillin-clavulanic acid, Amikacin, Ciprofloxacin, and Levofloxacin. Intermediate resistance was found to Ampicillin (25%; 11/44), Cefepime (16%; 7/44), and Ceftazidime (2%; 1/44). The results showed that 16% (7/44) of the isolates were resistant to Cefepime, 9% (4/44) to Ampicillin, and 5% (2/44) to Ceftazidime. MAR-index values ranged from 0.10 to 0.30. The incidence of pathogenic and multidrug-resistant V. parahaemolyticus strains in seafood offered on the market poses a risk to consumer health.
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Affiliation(s)
- Deyan Stratev
- Department of Food Quality and Safety and Veterinary Legislation, Faculty of Veterinary Medicine, Trakia University, Stara Zagora, Bulgaria.
| | - Rumyana Fasulkova
- Department of Food Quality and Safety and Veterinary Legislation, Faculty of Veterinary Medicine, Trakia University, Stara Zagora, Bulgaria
| | - Gergana Krumova-Valcheva
- National Diagnostic Research Veterinary Institute, Bulgarian Food Safety Agency, Sofia, Bulgaria
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Khouadja S, Roque A, Gonzalez M, Furones D. Vibrio pathogenicity island and phage CTX genes in Vibrio alginolyticus isolated from different aquatic environments. JOURNAL OF WATER AND HEALTH 2022; 20:1469-1478. [PMID: 36308492 DOI: 10.2166/wh.2022.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
In the present study, we investigated the presence of four Vibrio cholerae virulence genes (ctxA, VPI, Zot and ace) in 36 Vibrio alginolyticus isolates obtained from different seawater, sediments and aquatic organisms. We tested the virulence of 13 V. alginolyticus strains against juveniles of Sparus aurata and this virulence was correlated with the presence of V. cholerae virulence genes. A positive amplification for the virulence pathogenicity island was produced by five V. alginolyticus strains and four for cholerae toxin. Some of the V. alginolyticus strains are pathogenic to aquatic animals and might have derived their virulence genes from V. cholerae. V. alginolyticus strains can be considered as a possible reservoir of V. cholerae virulence genes.
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Affiliation(s)
- Sadok Khouadja
- Laboratoire d'Analyse, Traitement et Valorisation des Polluants de l'Environnement et des Produits, Département de Microbiologie, Faculté de Pharmacie, Rue Avicenne 5000, Monastir, Tunisia E-mail:
| | - Ana Roque
- IRTA-SCR, Ctra. Poble Nou Km 7.5, 43540 Sant Carles de la Ràpita, Tarragona, Spain
| | - Mar Gonzalez
- IRTA-SCR, Ctra. Poble Nou Km 7.5, 43540 Sant Carles de la Ràpita, Tarragona, Spain
| | - Dolors Furones
- IRTA-SCR, Ctra. Poble Nou Km 7.5, 43540 Sant Carles de la Ràpita, Tarragona, Spain
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Rapid identification and detection of Vibrio parahaemolyticus via different types of modus operandi with LAMP method in vivo. ANN MICROBIOL 2020. [DOI: 10.1186/s13213-020-01585-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Purpose
Vibrio parahaemolyticus, an easy-ignored food-borne pathogen, can cause bacterial outbreaks and human disease during early-stage infection. In this study, we aimed to evaluate the detection efficiency of loop-mediated isothermal amplification (LAMP) as an emerging technique to directly detect V. parahaemolyticus infection in mammalian hosts and assess its potential in clinical applications.
Methods
A LAMP assay was used for rapid identification of V. parahaemolyticus in a variety of mouse models in which animals were infected via the digestive tract, wounds, or through general infection, and the results were compared with routine analytical methods.
Results
Our results confirmed that the LAMP assay was capable of detecting V. parahaemolyticus in different mouse organs independent of the source of bacteria, although its sensitivity depended on the route of infection and the organ affected. Foodborne-derived V. parahaemolyticus was the most sensitive route, with the small intestine being the most sensitive organ. The LAMP assay indicated that V. parahaemolyticus that spread through the blood stream had the most serious consequences during early-stage infection. Positive LAMP results were identified in all blood samples from i.v. injected mice. Furthermore, the LAMP method could directly detect trace quantities of V. parahaemolyticus in fresh peripheral blood while conventional methods failed to do so, thereby shortening the time-to-result from days to minutes.
Conclusions
In this study, we demonstrated that the LAMP assay was effective in speeding up the detection of V. parahaemolyticus. Instead of being a secondary method to assist in the clinic, the LAMP assay has potential for use as the primary technique for rapid detection of V. parahaemolyticus in the future.
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Garin-Fernandez A, Glöckner FO, Wichels A. Genomic characterization of filamentous phage vB_VpaI_VP-3218, an inducible prophage of Vibrio parahaemolyticus. Mar Genomics 2020; 53:100767. [PMID: 32171709 DOI: 10.1016/j.margen.2020.100767] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 03/02/2020] [Accepted: 03/03/2020] [Indexed: 12/17/2022]
Abstract
The seawater temperature rise can promote the growth of potentially pathogenic Vibrio species. In the North Sea, V. parahaemolyticus strains have been isolated and characterized. These strains contain prophages that may contribute to the emergence of pathogenic strains in the marine environment. Here, we present the genome structure and possible biological functions of the inducible phage vB_VpaI_VP-3218, a novel filamentous phage carried by the V. parahaemolyticus strain VN-3218. Prophages of the strain VN-3218 were induced with mitomycin C and the DNA from the phage induction was sequenced. Two incomplete prophages were identified, only one complete phage genome with length of 11,082 bp was characterized. The phage vB_VpaI_VP-3218 belongs to the Inoviridae family and shows close homology to the Saetivirus genus. This phage can integrate into the chromosomal host genome and carries host-related regions absent in similar phage genomes, suggesting that this phage might integrate in other Vibrio host genomes from the environment. Furthermore, this phage might have a role in pathogenicity due to potential zonula occludens toxin genes. Based on its genomic similarity, the genome of vB_VpaI_VP-3218 phage probably integrates into the lysogen's chromosome and replicates as episome. This study complements prophage induction and bioinformatic studies applied to non-model species of potentially pathogenic Vibrio species. The characterization of this phage provides new insights with respect to the presence of filamentous phages in environmental V. parahaemolyticus strains, which might have a role in the emergence of new pathogenic strains in the North Sea.
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Affiliation(s)
- Alexa Garin-Fernandez
- Department of Microbial Ecology, Biologische Anstalt Helgoland, Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, Helgoland, Germany; Microbial Genomics and Bioinformatics Research Group, Max Planck Institute for Marine Microbiology, Bremen, Germany.
| | - Frank Oliver Glöckner
- Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, Bremerhaven, Germany; Jacobs University Bremen gGmbH, Bremen, Germany
| | - Antje Wichels
- Department of Microbial Ecology, Biologische Anstalt Helgoland, Alfred Wegener Institute Helmholtz Center for Polar and Marine Research, Helgoland, Germany
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Shaheer P, Akhilnath PG, Sreejith VN, Joseph TC, Murugadas V, Lalitha KV. Strain variability and pathogenic potential of tdhcarrying Vibrio parahaemolyticus isolated from diseased Penaeus monodon. DISEASES OF AQUATIC ORGANISMS 2019; 137:41-46. [PMID: 31777398 DOI: 10.3354/dao03425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A disease outbreak in 42-d-old black tiger shrimp Penaeus monodon juveniles from a commercial aquaculture farm in Kerala, India, was investigated. The cause of the disease outbreak was confirmed as Vibrio parahaemolyticus by biochemical tests, PCR targeting the toxR gene and pathogenicity testing of the isolates. All of the isolates tested negative by PCR specific for V. parahaemolyticus associated with acute hepatopancreatic necrosis disease (AHPND), implicating vibriosis unrelated to AHPND as the cause of mortality. Among the 19 isolates obtained, 2 possessed the tdh gene (coding for thermo-stable hemolysin), whereas none of the isolates possessed trh. The LD50 value of 8 isolates of V. parahaemolyticus from diseased and apparently healthy shrimp ranged from 2.7 × 104 to 4.9 × 105 CFU ml-1 by immersion challenge of P. monodon postlarvae. BOX-PCR and dendrogram analysis of the bacterial isolates revealed that the isolates from moribund and apparently healthy shrimp formed separate clusters, indicating that these isolates originate from separate clones. The isolates from moribund shrimp including tdh-positive V. parahaemolyticus clustered together. The present study represents the first report of tdh-positive V. parahaemolyticus causing disease in a shrimp farm.
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Affiliation(s)
- P Shaheer
- Microbiology, Fermentation and Biotechnology Division, Central Institute of Fisheries Technology, Matsyapuri P.O., Cochin 682029, Kerala, India
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Bacterial Nucleobases Synergistically Induce Larval Settlement and Metamorphosis in the Invasive Mussel Mytilopsis sallei. Appl Environ Microbiol 2019; 85:AEM.01039-19. [PMID: 31227552 DOI: 10.1128/aem.01039-19] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 06/13/2019] [Indexed: 11/20/2022] Open
Abstract
Marine bacterial biofilms have long been recognized as potential inducers of larval settlement and metamorphosis in marine invertebrates, but few chemical cues from bacteria have been identified. Here, we show that larval settlement and metamorphosis of an invasive fouling mussel, Mytilopsis sallei, could be induced by biofilms of bacteria isolated from its adult shells and other substrates from the natural environment. One of the strains isolated, Vibrio owensii MS-9, showed strong inducing activity which was attributed to the release of a mixture of nucleobases including uracil, thymine, xanthine, hypoxanthine, and guanine into seawater. In particular, the synergistic effect of hypoxanthine and guanine was sufficient for the inducing activity of V. owensii MS-9. The presence of two or three other nucleobases could enhance, to some extent, the activity of the mixture of hypoxanthine and guanine. Furthermore, we determined that bacteria producing higher concentrations of nucleobases were more likely to induce larval settlement and metamorphosis of M. sallei than were bacteria producing lower concentrations of nucleobases. The present study demonstrates that bacterial nucleobases play an important role in larval settlement and metamorphosis of marine invertebrates. This provides new insights into our understanding of the role of environmental bacteria in the colonization and aggregation of invasive fouling organisms and of the metabolites used as chemical mediators in cross-kingdom communication within aquatic systems.IMPORTANCE Invasive species are an increasingly serious problem globally. In aquatic ecosystems, invasive dreissenid mussels are well-known ecological and economic pests because they appear to effortlessly invade new environments and foul submerged structures with high-density aggregations. To efficiently control exotic mussel recruitment and colonization, the need to investigate the mechanisms of substrate selection for larval settlement and metamorphosis is apparent. Our work is one of very few to experimentally demonstrate that compounds produced by environmental bacteria play an important role in larval settlement and metamorphosis in marine invertebrates. Additionally, this study demonstrates that bacterial nucleobases can be used as chemical mediators in cross-kingdom communication within aquatic systems, which will enhance our understanding of how microbes induce larval settlement and metamorphosis of dreissenid mussels, and it furthermore may allow the development of new methods for application in antifouling.
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Point-of-care rapid detection of Vibrio parahaemolyticus in seafood using loop-mediated isothermal amplification and graphene-based screen-printed electrochemical sensor. Biosens Bioelectron 2019; 132:271-278. [DOI: 10.1016/j.bios.2019.02.060] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Accepted: 02/21/2019] [Indexed: 12/18/2022]
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10
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A pan-European ring trial to validate an International Standard for detection of Vibrio cholerae, Vibrio parahaemolyticus and Vibrio vulnificus in seafoods. Int J Food Microbiol 2019; 288:58-65. [DOI: 10.1016/j.ijfoodmicro.2018.02.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 01/18/2018] [Accepted: 02/06/2018] [Indexed: 11/20/2022]
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Da-Silva E, Baudart J, Barthelmebs L. Biosensing platforms for Vibrio bacteria detection based on whole cell and nucleic acid analysis: A review. Talanta 2018; 190:410-422. [DOI: 10.1016/j.talanta.2018.07.092] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 07/27/2018] [Accepted: 07/31/2018] [Indexed: 11/15/2022]
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Bauer J, Teitge F, Neffe L, Adamek M, Jung A, Peppler C, Steinhagen D, Jung-Schroers V. Recommendations for identifying pathogenic Vibrio spp. as part of disease surveillance programmes in recirculating aquaculture systems for Pacific white shrimps (Litopenaeus vannamei). JOURNAL OF FISH DISEASES 2018; 41:1877-1897. [PMID: 30311657 DOI: 10.1111/jfd.12897] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 08/29/2018] [Indexed: 06/08/2023]
Abstract
Due to their pathogenic potential, identifying Vibrio species from recirculating aquaculture systems (RAS) for Pacific white shrimp (Litopenaeus vannamei) is of great importance to determine the risk for animal's as well as for the consumer's health. The present study compared identification results for a total of 93 Vibrio isolates, including type strains and isolates from shrimp aquaculture. Results from biochemical identifications, 16S rRNA sequencing, sequencing of the uridylate kinase encoding gene pyrH and analysis of the protein spectra assessed by MALDI-TOF MS were compared. The results achieved by these different methods were highly divergent for many of the analysed isolates and for several Vibrio spp difficulties in reliably identifying occurred. These difficulties mainly resulted from missing entries in digital databases, a low number of comparable isolates analysed so far, and high interspecific similarities of biochemical traits and nucleotide sequences between the closely related Vibrio species. Due to the presented data, it can be concluded that for identifying Vibrio spp. from samples in routine diagnostics, it is recommended to use MALDI-TOF MS analysis for a quick and reliable identification of pathogenic Vibrio sp. Nevertheless, editing the database, containing the main spectra of Vibrio is recommended to achieve reliable identification results.
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Affiliation(s)
- Julia Bauer
- Fish Disease Research Unit, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Felix Teitge
- Fish Disease Research Unit, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Lisa Neffe
- Fish Disease Research Unit, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Mikolaj Adamek
- Fish Disease Research Unit, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Arne Jung
- Clinic for Poultry, University of Veterinary Medicine Hannover, Hannover, Germany
| | | | - Dieter Steinhagen
- Fish Disease Research Unit, University of Veterinary Medicine Hannover, Hannover, Germany
| | - Verena Jung-Schroers
- Fish Disease Research Unit, University of Veterinary Medicine Hannover, Hannover, Germany
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Abstract
Vibrio is a genus of ubiquitous bacteria found in a wide variety of aquatic and marine habitats; of the >100 described Vibrio spp., ~12 cause infections in humans. Vibrio cholerae can cause cholera, a severe diarrhoeal disease that can be quickly fatal if untreated and is typically transmitted via contaminated water and person-to-person contact. Non-cholera Vibrio spp. (for example, Vibrio parahaemolyticus, Vibrio alginolyticus and Vibrio vulnificus) cause vibriosis - infections normally acquired through exposure to sea water or through consumption of raw or undercooked contaminated seafood. Non-cholera bacteria can lead to several clinical manifestations, most commonly mild, self-limiting gastroenteritis, with the exception of V. vulnificus, an opportunistic pathogen with a high mortality that causes wound infections that can rapidly lead to septicaemia. Treatment for Vibrio spp. infection largely depends on the causative pathogen: for example, rehydration therapy for V. cholerae infection and debridement of infected tissues for V. vulnificus-associated wound infections, with antibiotic therapy for severe cholera and systemic infections. Although cholera is preventable and effective oral cholera vaccines are available, outbreaks can be triggered by natural or man-made events that contaminate drinking water or compromise access to safe water and sanitation. The incidence of vibriosis is rising, perhaps owing in part to the spread of Vibrio spp. favoured by climate change and rising sea water temperature.
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Identification of VPA1327 (vopT) as a Novel Genetic Marker for Detecting Pathogenic Vibrio parahaemolyticus. JOURNAL OF PURE AND APPLIED MICROBIOLOGY 2018. [DOI: 10.22207/jpam.12.2.01] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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15
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Yang HL, Wei S, Gooneratne R, Mutukumira AN, Ma XJ, Tang SZ, Wu XY. Development of a recombinase polymerase amplification assay for Vibrio parahaemolyticus detection with an internal amplification control. Can J Microbiol 2018; 64:223-230. [PMID: 29351385 DOI: 10.1139/cjm-2017-0504] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A novel RPA-IAC assay using recombinase polymerase and an internal amplification control (IAC) for Vibrio parahaemolyticus detection was developed. Specific primers were designed based on the coding sequence for the toxR gene in V. parahaemolyticus. The recombinase polymerase amplification (RPA) reaction was conducted at a constant low temperature of 37 °C for 20 min. Assay specificity was validated by using 63 Vibrio strains and 10 non-Vibrio bacterial species. In addition, a competitive IAC was employed to avoid false-negative results, which co-amplified simultaneously with the target sequence. The sensitivity of the assay was determined as 3 × 103 CFU/mL, which is decidedly more sensitive than the established PCR method. This method was then used to test seafood samples that were collected from local markets. Seven out of 53 different raw seafoods were detected as V. parahaemolyticus-positive, which were consistent with those obtained using traditional culturing method and biochemical assay. This novel RPA-IAC assay provides a rapid, specific, sensitive, and more convenient detection method for V. parahaemolyticus.
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Affiliation(s)
- Huan-Lan Yang
- a Department of Food Science and Engineering, Jinan University, Guangzhou 510632, China
| | - Shuang Wei
- b Guangdong Entry-Exit Inspection and Quarantine Bureau, Guangzhou 510632, China
| | - Ravi Gooneratne
- c Centre for Food Research and Innovation, Department of Wine, Food and Molecular Biosciences, Faculty of Agriculture & Life Sciences, Lincoln University, Christchurch 7647, New Zealand
| | - Anthony N Mutukumira
- d Massey Institute of Food Science and Technology, Institute of Food and Nutrition, Massey University, Albany Campus, New Zealand
| | - Xue-Jun Ma
- e Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Shu-Ze Tang
- a Department of Food Science and Engineering, Jinan University, Guangzhou 510632, China
| | - Xi-Yang Wu
- a Department of Food Science and Engineering, Jinan University, Guangzhou 510632, China
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Karunasagar I, Maiti B, Kumar BK. Molecular Methods to Study Vibrio parahaemolyticus and Vibrio vulnificus From Atypical Environments. J Microbiol Methods 2018. [DOI: 10.1016/bs.mim.2018.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Federici S, Serrazanetti DI, Guerzoni ME, Campana R, Ciandrini E, Baffone W, Gianotti A. Development of a rapid PCR protocol to detect Vibrio parahaemolyticus in clams. Journal of Food Science and Technology 2017; 55:749-759. [PMID: 29391640 DOI: 10.1007/s13197-017-2986-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 12/06/2017] [Accepted: 12/07/2017] [Indexed: 11/25/2022]
Abstract
Vibrio parahaemolyticus is part of the natural microflora of estuarine and coastal marine waters and can be also present in seafood, especially shellfish and bivalve molluscs. In this study we compared the reference cultural method ISO 6887-3 with two molecular methods, multiplex PCR and real-time PCR, for the detection of two distinct genetic markers (tlh species-specific gene and tdh virulence gene) of V. parahaemolyticus in bivalve mollusc. The analyses were performed on clams inoculated with V. parahaemolyticus ATCC 43996 at T0 and after a 3 and 6 h of pre-enrichment in alkaline saline peptone water. Counts on agar plates were largely inaccurate, probably due to other Vibrio species grown on the TCBS selective agar. Multiplex PCR assays, performed using primers pairs for tdh and tlh genes, showed a detection limit of 104 CFU/g of shell stock within 6 h of pre-enrichment, respecting however the action level indicated by the National Seafood Sanitation Program guideline. Detection by tdh gene in real-time PCR reached the definitely highest sensitivity in shorter times, 101 CFU/g after 3 h of pre-enrichment, while the sensitivity for the tlh gene was not promising, detecting between 105 and 106 CFU/g after 6 h of pre-enrichment. Our findings provide a rapid routine method of detection of V. parahaemolyticus based on tdh gene by real-time PCR for commercial seafood analysis to identify the risk of gastrointestinal diseases.
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Affiliation(s)
- Sara Federici
- 1Department of Biomolecular Sciences, Division of Toxicological, Hygienic and Environmental Sciences, University of Urbino "Carlo Bo", Via S. Chiara 27, 61029 Urbino, Italy
| | - Diana I Serrazanetti
- 2Inter-departmental Centre for Industrial Agri-Food Research, Alma Mater Studiorum, University of Bologna, Piazza Goidanich 60, 47521 Cesena, Italy
| | - M Elisabetta Guerzoni
- 3Department of Food Science, Alma Mater Studiorum, University of Bologna, Viale Fanin 46, 40127 Bologna, Italy
| | - Raffaella Campana
- 1Department of Biomolecular Sciences, Division of Toxicological, Hygienic and Environmental Sciences, University of Urbino "Carlo Bo", Via S. Chiara 27, 61029 Urbino, Italy
| | - Eleonora Ciandrini
- 1Department of Biomolecular Sciences, Division of Toxicological, Hygienic and Environmental Sciences, University of Urbino "Carlo Bo", Via S. Chiara 27, 61029 Urbino, Italy
| | - Wally Baffone
- 1Department of Biomolecular Sciences, Division of Toxicological, Hygienic and Environmental Sciences, University of Urbino "Carlo Bo", Via S. Chiara 27, 61029 Urbino, Italy
| | - Andrea Gianotti
- 2Inter-departmental Centre for Industrial Agri-Food Research, Alma Mater Studiorum, University of Bologna, Piazza Goidanich 60, 47521 Cesena, Italy.,3Department of Food Science, Alma Mater Studiorum, University of Bologna, Viale Fanin 46, 40127 Bologna, Italy.,4Dipartimento di Scienze e Tecnologie Agro-Alimentari (DISTAL), Department of Agricultural and Food Science, Alma Mater Studiorum, Università di Bologna, Via Fanin 50, 40127 Bologna, Italy.,Unità Organizzativa di Cesena, Piazza Goidanich 60, Cesena, FC Italy
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Rosa JVD, Conceição NVD, Perez I, Timm CD. FORMAÇÃO DE BIOFILME APÓS ESTRESSE SUBLETAL POR Vibrio parahaemolyticus ISOLADOS DE CAMARÃO-ROSA (Farfantepenaeus paulensis). CIÊNCIA ANIMAL BRASILEIRA 2017. [DOI: 10.1590/1089-6891v18e-44246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Resumo O consumo de frutos do mar, como o camarão-rosa, contaminados com V. parahaemolyticus pode causar gastrenterite aguda. O objetivo deste trabalho foi verificar a capacidade de V. parahaemolyticus isolados de camarões provenientes do estuário da Lagoa dos Patos formarem biofilme após exposição a diferentes tipos de estresse subletal. Para obtenção das amostras, foram realizadas 12 coletas de Farfantepenaeus paulensis, durante o período de safra de 2016. As amostras foram analisadas quanto à presença de V. parahaemolyticus. As cepas foram avaliadas quanto à capacidade de produção de biofilme em placas de microtitulação, tanto antes como após serem submetidas a diferentes tipos de estresse subletal. V. parahaemolyticus foi isolado de 16,66% (2/12) das amostras. Uma das duas cepas isoladas foi capaz de formar biofilme, sendo classificada como fraca formadora de biofilme, a outra foi classificada como não formadora de biofilme. Nenhuma das cepas alterou sua capacidade de formar biofilme quando submetida aos estresses de 4 ºC e 20 ºC; contudo, com relação aos estresses de 42 ºC e pH ácido, cada cepa respondeu de uma maneira diferente.
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Bunpa S, Nishibuchi M, Thawonsuwan J, Sermwittayawong N. Genetic heterogeneity among Vibrio alginolyticus strains, and design of a PCR-based identification method using gyrB gene sequence. Can J Microbiol 2017; 64:1-10. [PMID: 29017024 DOI: 10.1139/cjm-2017-0269] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Vibrio alginolyticus, a pathogen among humans and marine animals, is ubiquitous in marine environments. The aims of this study were to analyze the relationships between genetic diversity and origins, and to develop new primers based on the gyrB sequence to identify V. alginolyticus isolated from various sources. To determine the genetic diversity of this bacterium, an arbitrarily primed polymerase chain reaction (AP-PCR) technique was performed on 36 strains of V. alginolyticus isolated from diarrhea patients and from diseased marine animals and environments in southern Thailand. The results showed distinct DNA fingerprints of all strains, indicating that they are genetically heterogeneous. For species-specific identification of V. alginolyticus, primers targeting the gyrB gene of V. alginolyticus were developed. Thirty reference Vibrio spp., 13 non-Vibrio spp., and 160 strains of V. alginolyticus isolated from various sources in southern Thailand were used to evaluate the specificity of these primers. Our results showed that the gyrB primers could specifically identify V. alginolyticus from all sample types. In addition, the detection limit of the PCR was at least 95 pg of DNA template. Therefore, we concluded that the newly designed gyrB primers are rapid, highly sensitive, and specific to identify V. alginolyticus isolated from various sources.
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Affiliation(s)
- Supansa Bunpa
- a Department of Microbiology, Faculty of Science, Prince of Songkla University, Songkhla 90110, Thailand.,b Food Safety and Health Research Unit, Prince of Songkla University, Songkhla 90110, Thailand
| | - Mitsuaki Nishibuchi
- c Center for Southeast Asian Studies, Kyoto University, Kyoto 606-8501, Japan
| | - Jumroensri Thawonsuwan
- d Coastal Aquatic Animal Health Research Institute, Coastal Fisheries Research and Development Division, Department of Fisheries, Songkhla 90100, Thailand
| | - Natthawan Sermwittayawong
- a Department of Microbiology, Faculty of Science, Prince of Songkla University, Songkhla 90110, Thailand.,b Food Safety and Health Research Unit, Prince of Songkla University, Songkhla 90110, Thailand
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20
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Li H, Tang R, Lou Y, Cui Z, Chen W, Hong Q, Zhang Z, Malakar PK, Pan Y, Zhao Y. A Comprehensive Epidemiological Research for Clinical Vibrio parahaemolyticus in Shanghai. Front Microbiol 2017; 8:1043. [PMID: 28642752 PMCID: PMC5462930 DOI: 10.3389/fmicb.2017.01043] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Accepted: 05/24/2017] [Indexed: 01/22/2023] Open
Abstract
Vibrio parahaemolyticus is one of the most important pathogen for seafood-borne gastroenteritis in Shanghai and the rest of the world. A total of 42 V. parahaemolyticus strains were isolated from 1900 fecal specimens collected from patients in Shanghai hospital presenting from January 2014 to December 2015. All isolates were evaluated for potential virulence factors [tdh, trh, and type three secretion system (T3SS) genes], typed using multilocus sequence typing (MLST) and screened for antimicrobial resistance phenotype and genotype. And for the first time, the relationship between virulence, genetic diversity and antimicrobial resistance of these isolates were identified. The results showed that 37 isolates carried the tdh gene (88.1%) and only seven isolates were positive for the trh gene. The T3SS1 and T3SS2 genes were detected in all strains and only trh-positive isolates are also containing the T3SS2β genes. MLST analysis of the 42 Shanghai isolates identified 20 sequence types (STs) with 16 novel STs and that these clinical V. parahaemolyticus strains showed high degrees of genetic diversity. All isolates expressed high levels of resistance against Ampicillin (100.0%), Streptomycin (100.0%), Cephazolin (92.9%), Kanamycin (92.8%) and Amikacin (90.5%), and eight out of 38 resistance genes (SHV, tet(B), strA, qnrA, gryA, qnrB, sulI, sulII) were detected in at least two isolates. This study confirms that antimicrobial resistance of clinical V. parahaemolyticus isolates is greater than those of environmental isolates. Furthermore, no clear correlation between antimicrobial resistance and virulence or genetic diversity was found in this study. These results add to epidemiological data of clinical V. parahaemolyticus isolates in Shanghai and highlight the need for additional mechanistic studies, especially antimicrobial resistance, to reduce the burden of disease caused by this pathogen in China.
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Affiliation(s)
- Huan Li
- College of Food Science and Technology, Shanghai Ocean UniversityShanghai, China
| | - Rong Tang
- Shanghai General HospitalShanghai, China
| | - Yang Lou
- College of Food Science and Technology, Shanghai Ocean UniversityShanghai, China
| | - Zelin Cui
- Shanghai General HospitalShanghai, China
| | | | - Qing Hong
- Shanghai General HospitalShanghai, China
| | - Zhaohuan Zhang
- College of Food Science and Technology, Shanghai Ocean UniversityShanghai, China
| | - Pradeep K. Malakar
- College of Food Science and Technology, Shanghai Ocean UniversityShanghai, China
| | - Yingjie Pan
- College of Food Science and Technology, Shanghai Ocean UniversityShanghai, China
- Laboratory of Quality and Safety Risk Assessment for Aquatic Products on Storage and Preservation (Shanghai), Ministry of AgricultureShanghai, China
- Shanghai Engineering Research Center of Aquatic-Product Processing and PreservationShanghai, China
| | - Yong Zhao
- College of Food Science and Technology, Shanghai Ocean UniversityShanghai, China
- Laboratory of Quality and Safety Risk Assessment for Aquatic Products on Storage and Preservation (Shanghai), Ministry of AgricultureShanghai, China
- Shanghai Engineering Research Center of Aquatic-Product Processing and PreservationShanghai, China
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21
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GroEL PCR- RFLP – An efficient tool to discriminate closely related pathogenic Vibrio species. Microb Pathog 2017; 105:196-200. [DOI: 10.1016/j.micpath.2017.02.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 02/17/2017] [Accepted: 02/20/2017] [Indexed: 11/20/2022]
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22
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Ecological fitness and virulence features of Vibrio parahaemolyticus in estuarine environments. Appl Microbiol Biotechnol 2017; 101:1781-1794. [PMID: 28144705 DOI: 10.1007/s00253-017-8096-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 12/22/2016] [Accepted: 01/02/2017] [Indexed: 12/11/2022]
Abstract
Vibrio parahaemolyticus is a commonly encountered and highly successful organism in marine ecosystems. It is a fast-growing, extremely versatile copiotroph that is active over a very broad range of conditions. It frequently occurs suspended in the water column (often attached to particles or zooplankton), and is a proficient colonist of submerged surfaces. This organism is an important pathogen of animals ranging from microcrustaceans to humans and is a causative agent of seafood-associated food poisoning. This review examines specific ecological adaptations of V. parahaemolyticus, including its broad tolerances to temperature and salinity, its utilization of a wide variety of organic carbon and energy sources, and its pervasive colonization of suspended and stationary materials that contribute to its success and ubiquity in temperate and tropical estuarine ecosystems. Several virulence-related features are examined, in particular the thermostable direct hemolysin (TDH), the TDH-related hemolysin (TRH), and the type 3 secretion system, and the possible importance of these features in V. parahaemolyticus pathogenicity is explored. The impact of new and much more effective PCR primers on V. parahaemolyticus detection and our views of virulent strain abundance are also described. It is clear that strains carrying the canonical virulence genes are far more common than previously thought, which opens questions regarding the role of these genes in pathogenesis. It is also clear that virulence is an evolving feature of V. parahaemolyticus and that novel combinations of virulence factors can lead to emergent virulence in which a strain that is markedly more pathogenic evolves and propagates to produce an outbreak. The effects of global climate change on the frequency of epidemic disease, the geographic distribution of outbreaks, and the human impacts of V. parahaemolyticus are increasing and this review provides information on why this ubiquitous human pathogen has increased its footprint and its significance so dramatically.
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23
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Sala-Comorera L, Vilaró C, Galofré B, Blanch AR, García-Aljaro C. Use of matrix-assisted laser desorption/ionization-time of flight (MALDI-TOF) mass spectrometry for bacterial monitoring in routine analysis at a drinking water treatment plant. Int J Hyg Environ Health 2016; 219:577-584. [PMID: 26809219 DOI: 10.1016/j.ijheh.2016.01.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2015] [Revised: 01/08/2016] [Accepted: 01/11/2016] [Indexed: 11/28/2022]
Abstract
The study of bacterial communities throughout a drinking water treatment plant could provide a basic understanding of the effects of water processing that could then be used to improve the management of such plants. However, it is necessary to develop new analytical techniques that are sufficiently efficient, robust and fast for their effective and useful application in routine analysis. The aim of this study is therefore to assess the performance of matrix-assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF MS), as compared to the PhenePlate™ system, for routine analysis in a drinking water treatment plant. To this end we studied a total of 277 colonies isolated in different seasons and from different points throughout the water treatment process, including: raw water, sand filtration, ultrafiltration, reverse osmosis and chlorination. The colonies were analysed using MALDI-TOF MS by direct deposition of the cells on the plate. The colonies were also biochemically fingerprinted using the PhenePlate™ system, clustered according to their similarity and a representative strain was selected for 16S rRNA gene sequencing and API® gallery-based identification. The use of MALDI-TOF MS was reliable compared to the PhenePlate™ system and has the advantage of being faster and relatively cheap. Bacteria typing by MALDI-TOF MS is therefore a promising method to replace conventional routine phenotypic methods for the identification of bacteria in drinking water laboratories, thanks to its robustness. The major limiting factor for MALDI-TOF MS is the lack of a suitable mass spectra database; although each laboratory can develop its own library. This methodology will provide a tracking tool for companies to use in risk management and the detection of possible failures in both the water treatment processes and the distribution network, as well as offering characterization of the intrinsic microbial populations.
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Affiliation(s)
- Laura Sala-Comorera
- Department of Microbiology, Faculty of Biology, University of Barcelona, Av. Diagonal 643, 08028 Barcelona, Spain
| | - Carles Vilaró
- Aigües de Barcelona, EMGCIA, C/General Batet 1-7, 08028 Barcelona, Spain
| | - Belén Galofré
- Aigües de Barcelona, EMGCIA, C/General Batet 1-7, 08028 Barcelona, Spain
| | - Anicet R Blanch
- Department of Microbiology, Faculty of Biology, University of Barcelona, Av. Diagonal 643, 08028 Barcelona, Spain
| | - Cristina García-Aljaro
- Department of Microbiology, Faculty of Biology, University of Barcelona, Av. Diagonal 643, 08028 Barcelona, Spain.
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24
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Buller N, Hair S. Identification of bacteria from aquatic animals. MICROBIOLOGY AUSTRALIA 2016. [DOI: 10.1071/ma16044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
A wide range of aquatic animal species are cultured for human consumption, the fashion industry, research purposes or re-stocking natural populations. Each host species may be colonised by bacterial saprophytes or infected with pathogens that have specific growth requirements encompassing temperature, salinity, trace elements or ions. To ensure successful culture and identification of potential pathogens, the microbiologist must have in-depth knowledge of these growth requirements and access to the appropriate resources. Identification techniques include traditional culture and biochemical identification methods modified to take into account any growth requirements, identification using mass spectrometry, detection of nucleic acids, sequencing 16S rRNA or specific genes, and whole genome sequencing.
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25
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Kriem M, Banni B, El Bouchtaoui H, Hamama A, El Marrakchi A, Chaouqy N, Robert-Pillot A, Quilici M. Prevalence of Vibrio
spp. in raw shrimps (Parapenaeus longirostris
) and performance of a chromogenic medium for the isolation of Vibrio
strains. Lett Appl Microbiol 2015; 61:224-30. [DOI: 10.1111/lam.12455] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 05/26/2015] [Accepted: 05/26/2015] [Indexed: 01/21/2023]
Affiliation(s)
- M.R. Kriem
- Institut Agronomique et Vétérinaire Hassan II; Rabat Morocco
| | - B. Banni
- Institut Agronomique et Vétérinaire Hassan II; Rabat Morocco
| | | | - A. Hamama
- Institut Agronomique et Vétérinaire Hassan II; Rabat Morocco
| | - A. El Marrakchi
- Institut Agronomique et Vétérinaire Hassan II; Rabat Morocco
| | - N. Chaouqy
- Laboratoire Régional d'Analyses et de Recherches de l'Office National de Sécurité Sanitaire des Aliments d'Agadir (LRARA/ONSSA); Laayoune Morocco
| | - A. Robert-Pillot
- Institut Pasteur de Paris Centre National de Référence des vibrions et du choléra; Paris France
| | - M.L. Quilici
- Institut Pasteur de Paris Centre National de Référence des vibrions et du choléra; Paris France
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26
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Tey Y, Jong K, Fen S, Wong H. Genetic variation in Vibrio parahaemolyticus
isolated from the aquacultural environments. Lett Appl Microbiol 2015; 60:321-7. [DOI: 10.1111/lam.12372] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Revised: 11/18/2014] [Accepted: 11/19/2014] [Indexed: 11/30/2022]
Affiliation(s)
- Y.H. Tey
- Department of Microbiology; Soochow University; Taipei Taiwan
| | - K.J. Jong
- Department of Biological Resources; National Chiayi University; Chiayi Taiwan
| | - S.Y. Fen
- Department of Microbiology; Soochow University; Taipei Taiwan
| | - H.C. Wong
- Department of Microbiology; Soochow University; Taipei Taiwan
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Erler R, Wichels A, Heinemeyer EA, Hauk G, Hippelein M, Reyes NT, Gerdts G. VibrioBase: A MALDI-TOF MS database for fast identification of Vibrio spp. that are potentially pathogenic in humans. Syst Appl Microbiol 2014; 38:16-25. [PMID: 25466918 DOI: 10.1016/j.syapm.2014.10.009] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Revised: 10/20/2014] [Accepted: 10/27/2014] [Indexed: 11/17/2022]
Abstract
Mesophilic marine bacteria of the family Vibrionaceae, specifically V. cholerae, V. parahaemolyticus and V. vulnificus, are considered to cause severe illness in humans. Due to climate-change-driven temperature increases, higher Vibrio abundances and infections are predicted for Northern Europe, which in turn necessitates environmental surveillance programs to evaluate this risk. We propose that whole-cell matrix assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) profiling is a promising tool for the fast and reliable species classification of environmental isolates. Because the reference database does not contain sufficient Vibrio spectra we generated the VibrioBase database in this study. Mass spectrometric data were generated from 997 largely environmental strains and filed in this new database. MALDI-TOF MS clusters were assigned based on the species classification obtained by analysis of partial rpoB (RNA polymerase beta-subunit) sequences. The affiliation of strains to species-specific clusters was consistent in 97% of all cases using both approaches, and the extended VibrioBase generated more specific species identifications with higher matching scores compared to the commercially available database. Therefore, we have made the VibrioBase database freely accessible, which paves the way for detailed risk assessment studies of potentially pathogenic Vibrio spp. from marine environments.
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Affiliation(s)
- René Erler
- Alfred Wegener Institute for Polar and Marine Research, Biologische Anstalt Helgoland, Kurpromenade 201, 27498 Helgoland, Germany.
| | - Antje Wichels
- Alfred Wegener Institute for Polar and Marine Research, Biologische Anstalt Helgoland, Kurpromenade 201, 27498 Helgoland, Germany
| | - Ernst-August Heinemeyer
- Governmental Institute of Public Health of Lower Saxony, Lüchtenburger Weg 24, 26603 Aurich, Germany
| | - Gerhard Hauk
- Regional Office for Health and Social Affairs of Mecklenburg-Western Pomerania, Gertrudenstraße 11, 18057 Rostock, Germany
| | - Martin Hippelein
- University Medical Center Schleswig-Holstein, Central Facility: Medical Investigation Office and Hygiene, Brunswiker Straße 4, 24105 Kiel, Germany
| | - Nadja Torres Reyes
- GFZ German Research Centre for Geosciences, Helmholtz Centre Potsdam, Telegrafenberg, 14473 Potsdam, Germany
| | - Gunnar Gerdts
- Alfred Wegener Institute for Polar and Marine Research, Biologische Anstalt Helgoland, Kurpromenade 201, 27498 Helgoland, Germany
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Mannas H, Mimouni R, Chaouqy N, Hamadi F, Martinez-Urtaza J. Occurrence of Vibrio and Salmonella species in mussels (Mytilus galloprovincialis) collected along the Moroccan Atlantic coast. SPRINGERPLUS 2014; 3:265. [PMID: 24936389 PMCID: PMC4057555 DOI: 10.1186/2193-1801-3-265] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Accepted: 05/14/2014] [Indexed: 11/15/2022]
Abstract
This study reports the occurrence of different Vibrio and Salmonella species in 52 samples of Mytilus galloprovincialis collected from four sites along the Atlantic coast between Agadir and Essaouira (Anza, Cap Ghir, Imssouane and Essaouira). The level of Escherichia coli (E. coli) was also determined to evaluate the degree of microbial pollution in the investigated areas. In this study three methods were used : AFNOR NF EN ISO 6579 V08-013 for Salmonella spp., the provisional method routinely used by several laboratories (Institut Pasteur, Paris,…) for Vibrio cholerae and Vibrio parahaemolyticus in the seafood, and the most probable number method (MPN) using Norm ISO/TS 16649–3 (2005) for E. coli. The most frequently isolated Vibrios were Vibrio alginolyticus (90.4% of samples), followed by V. cholerae non O1 non O139 (15.4%) and V. parahaemolyticus (7.7%). Salmonella spp. was found in 15% of the samples. The number of E. coli ranged between 0.2/100 g and 1.8 103 /100 g of mussel soft tissues. This study indicates the potential sanitary risk associated with the presence of pathogenic bacteria in cultivated mussels in the two populous regions of southern Morocco, where shellfish production and maritime tourism are important to the local economy.
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Affiliation(s)
- Hasna Mannas
- Faculty of Sciences, Laboratory of Biotechnology & Valorisation of Natural Resources, University Ibn Zohr, Agadir, Morocco
| | - Rachida Mimouni
- Faculty of Sciences, Laboratory of Biotechnology & Valorisation of Natural Resources, University Ibn Zohr, Agadir, Morocco
| | - Noureddine Chaouqy
- Laboratory of Microbiology, National Health Security Food Office (ONSSA), Agadir, Morocco
| | - Fatima Hamadi
- Faculty of Sciences, Laboratory of Biotechnology & Valorisation of Natural Resources, University Ibn Zohr, Agadir, Morocco
| | - Jaime Martinez-Urtaza
- Reader in Infection and Immunology Department of Biology and Biochemistry, University of Bath, BA2 7AY Bath, United Kingdom
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Genes similar to the Vibrio parahaemolyticus virulence-related genes tdh, tlh, and vscC2 occur in other vibrionaceae species isolated from a pristine estuary. Appl Environ Microbiol 2013; 80:595-602. [PMID: 24212573 DOI: 10.1128/aem.02895-13] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Detection of the human pathogen Vibrio parahaemolyticus often relies on molecular biological analysis of species-specific virulence factor genes. These genes have been employed in determinations of V. parahaemolyticus population numbers and the prevalence of pathogenic V. parahaemolyticus strains. Strains of the Vibrionaceae species Photobacterium damselae, Vibrio diabolicus, Vibrio harveyi, and Vibrio natriegens, as well as strains similar to Vibrio tubiashii, were isolated from a pristine salt marsh estuary. These strains were examined for the V. parahaemolyticus hemolysin genes tdh, trh, and tlh and for the V. parahaemolyticus type III secretion system 2α gene vscC2 using established PCR primers and protocols. Virulence-related genes occurred at high frequencies in non-V. parahaemolyticus Vibrionaceae species. V. diabolicus was of particular interest, as several strains were recovered, and the large majority (>83%) contained virulence-related genes. It is clear that detection of these genes does not ensure correct identification of virulent V. parahaemolyticus. Further, the occurrence of V. parahaemolyticus-like virulence factors in other vibrios potentially complicates tracking of outbreaks of V. parahaemolyticus infections.
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Hossain MT, Kim YO, Kong IS. Multiplex PCR for the detection and differentiation of Vibrio parahaemolyticus strains using the groEL, tdh and trh genes. Mol Cell Probes 2013; 27:171-5. [PMID: 23660458 DOI: 10.1016/j.mcp.2013.04.001] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 04/22/2013] [Accepted: 04/24/2013] [Indexed: 11/26/2022]
Abstract
Vibrio parahaemolyticus is a significant cause of human gastrointestinal disorders worldwide, transmitted primarily by ingestion of raw or undercooked contaminated seafood. In this study, a multiplex PCR assay for the detection and differentiation of V. parahaemolyticus strains was developed using primer sets for a species-specific marker, groEL, and two virulence markers, tdh and trh. Multiplex PCR conditions were standardised, and extracted genomic DNA of 70 V. parahaemolyticus strains was used for identification. The sensitivity and efficacy of this method were validated using artificially inoculated shellfish and seawater. The expected sizes of amplicons were 510 bp, 382 bp, and 171 bp for groEL, tdh and trh, respectively. PCR products were sufficiently different in size, and the detection limits of the multiplex PCR for groEL, tdh and trh were each 200 pg DNA. Specific detection and differentiation of virulent from non-virulent strains in shellfish homogenates and seawater was also possible after artificial inoculation with various V. parahaemolyticus strains. This newly developed multiplex PCR is a rapid assay for detection and differentiation of pathogenic V. parahaemolyticus strains, and could be used to prevent disease outbreaks and protect public health by helping the seafood industry maintain a safe shellfish supply.
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Park JY, Jeon S, Kim JY, Park M, Kim S. Multiplex Real-time Polymerase Chain Reaction Assays for Simultaneous Detection of Vibrio cholerae, Vibrio parahaemolyticus, and Vibrio vulnificus. Osong Public Health Res Perspect 2013; 4:133-9. [PMID: 24159544 PMCID: PMC3787528 DOI: 10.1016/j.phrp.2013.04.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 03/25/2013] [Accepted: 04/05/2013] [Indexed: 12/03/2022] Open
Abstract
Objectives A multiplex real-time polymerase chain reaction (RT-PCR) method was developed for the identification of three Vibrio species: Vibrio cholerae, Vibrio parahaemolyticus, and Vibrio vulnificus. Methods Specific primers and probes targeting the hlyA, tlh, and vvhA genes were selected and used for multiplex real-time PCR to confirm the identification of V. cholerae, V. parahaemolyticus, and V. vulnificus, respectively. This method was applied to screen Vibrio species from environmental samples and combining it with a culture-based method, its effectiveness was evaluated in comparison with culture-based methods alone. Results Specific PCR fragments were obtained from isolates belonging to the target species, indicating a high specificity of this multiplex real-time PCR. No cross-reactivity with the assay was observed between the tested bacteria. The sensitivity of the multiplex real-time PCR was found to have a lower limit of 104 colony-forming units/reaction for all three Vibrio species. The combination strategy raised the isolation ratio of all three Vibrio species 1.26- to 2.75-fold. Conclusion This assay provides a rapid, sensitive, and specific technique to detect these three Vibrio species in the environment.
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Affiliation(s)
- Jie Yeun Park
- Division of Enteric Bacterial Infections, Korea National Institute of Health, Osong, Korea
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Tall A, Hervio-Heath D, Teillon A, Boisset-Helbert C, Delesmont R, Bodilis J, Touron-Bodilis A. Diversity of Vibrio spp. isolated at ambient environmental temperature in the Eastern English Channel as determined by pyrH sequencing. J Appl Microbiol 2013; 114:1713-24. [PMID: 23473469 DOI: 10.1111/jam.12181] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2012] [Revised: 02/15/2013] [Accepted: 02/25/2013] [Indexed: 12/01/2022]
Abstract
AIMS To describe the diversity of the culturable mesophilic and potentially pathogenic vibrios isolated at 22 and 37°C on TCBS medium, in September 2009 from seawater and surface sediments. METHODS AND RESULTS q-PCR assays previously selected for the identification of bacterial strains isolated at 37°C were used in combination with the partial sequencing of two housekeeping genes, pyrH and toxR, to identify 315 strains isolated at 22°C. The great majority of the 37°C strains was identified by q-PCR assays, (five of the six species) with the predominance of Vibrio alginolyticus (85·9%) and V. harveyi (10·7%). The human pathogens V. parahaemolyticus and V. cholerae were rarely detected (two strains each). The 22°C strains were successfully identified by the phylogeny analysis of pyrH and toxR genes, revealing 20 Vibrio species, with the predominance of the clam pathogen V. celticus (36·8%). The Splendidus and the Harveyi groups represented the main Vibrio group at 22°C (80%) and 37°C (99·5%), respectively. CONCLUSIONS The combination of q-PCR assays and the sequencing of pyrH and toxR genes highlighted two different Vibrio communities at 22 and 37°C both dominated by pathogenic species for marine organisms. SIGNIFICANCE AND IMPACT OF THE STUDY The sequencing of the pyrH gene revealed to be a valuable tool to identify environmental Vibrio spp. strains isolated at 22°C, as 92·3% of them were identified in this study.
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Affiliation(s)
- A Tall
- Laboratoire Microbiologie-LNR, Unité Environnement, Microbiologie et Phycotoxines, Département Ressources Biologiques et Environnement, Centre de Brest, Ifremer, Plouzané, France
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Presence of pathogenic Vibrio Parahaemolyticus in waters and seafood from the Tunisian Sea. World J Microbiol Biotechnol 2013; 29:1341-8. [DOI: 10.1007/s11274-013-1297-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Accepted: 02/15/2013] [Indexed: 10/27/2022]
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Biochemical, serological, and virulence characterization of clinical and oyster Vibrio parahaemolyticus isolates. J Clin Microbiol 2012; 50:2343-52. [PMID: 22535979 DOI: 10.1128/jcm.00196-12] [Citation(s) in RCA: 124] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
In this study, 77 clinical and 67 oyster Vibrio parahaemolyticus isolates from North America were examined for biochemical profiles, serotype, and the presence of potential virulence factors (tdh, trh, and type III secretion system [T3SS] genes). All isolates were positive for oxidase, indole, and glucose fermentation, consistent with previous reports. The isolates represented 35 different serotypes, 9 of which were shared by clinical and oyster isolates. Serotypes associated with pandemic strains (O1:KUT, O1:K25, O3:K6, and O4:K68) were observed for clinical isolates, and 7 (9%) oyster isolates belonged to serotype O1:KUT. Of the clinical isolates, 27% were negative for tdh and trh, while 45% contained both genes. Oyster isolates were preferentially selected for the presence of tdh and/or trh; 34% contained both genes, 42% had trh but not tdh, and 3% had tdh but not trh. All but 1 isolate (143/144) had at least three of the four T3SS1 genes examined. The isolates lacking both tdh and trh contained no T3SS2α or T3SS2β genes. All clinical isolates positive for tdh and negative for trh possessed all T3SS2α genes, and all isolates negative for tdh and positive for trh possessed all T3SS2β genes. The two oyster isolates containing tdh but not trh possessed all but the vopB2 gene of T3SS2α, as reported previously. In contrast to the findings of previous studies, all strains examined that were positive for both tdh and trh also carried T3SS2β genes. This report identifies the serotype as the most distinguishing feature between clinical and oyster isolates. Our findings raise concerns about the reliability of the tdh, trh, and T3SS genes as virulence markers and highlight the need for more-detailed pathogenicity investigations of V. parahaemolyticus.
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Di Pinto A, Terio V, Di Pinto P, Colao V, Tantillo G. Detection of Vibrio parahaemolyticus in shellfish using polymerase chain reaction-enzyme-linked immunosorbent assay. Lett Appl Microbiol 2012; 54:494-8. [DOI: 10.1111/j.1472-765x.2012.03231.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Jun JW, Kim JH, Choresca CH, Shin SP, Han JE, Han SY, Chai JY, Park SC. Isolation, Molecular Characterization, and Antibiotic Susceptibility ofVibrio parahaemolyticusin Korean Seafood. Foodborne Pathog Dis 2012; 9:224-31. [DOI: 10.1089/fpd.2011.1018] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Jin Woo Jun
- Laboratory of Aquatic Animal Medicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Korea
| | - Ji Hyung Kim
- Laboratory of Aquatic Animal Medicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Korea
| | - Casiano H. Choresca
- Laboratory of Aquatic Animal Medicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Korea
| | - Sang Phil Shin
- Laboratory of Aquatic Animal Medicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Korea
| | - Jee Eun Han
- Laboratory of Aquatic Animal Medicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Korea
| | - Sang Yoon Han
- Laboratory of Aquatic Animal Medicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Korea
| | - Ji Young Chai
- Department of Rheumatology, Bundang Jesaeng Hospital, Seongnam, Korea
| | - Se Chang Park
- Laboratory of Aquatic Animal Medicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Korea
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Rojas MVR, Matté MH, Dropa M, Silva MLD, Matté GR. Characterization of Vibrio parahaemolyticus isolated from oysters and mussels in São Paulo, Brazil. Rev Inst Med Trop Sao Paulo 2012; 53:201-5. [PMID: 21915463 DOI: 10.1590/s0036-46652011000400005] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2010] [Accepted: 06/20/2011] [Indexed: 11/22/2022] Open
Abstract
Vibrio parahaemolyticus is a marine bacterium, responsible for gastroenteritis in humans. Most of the clinical isolates produce thermostable direct hemolysin (TDH) and TDH-related hemolysin (TRH) encoded by tdh and trh genes respectively. In this study, twenty-three V. parahaemolyticus, previously isolated from oysters and mussels were analyzed by PCR using specific primers for the 16S rRNA and virulence genes (tdh, trh and tlh) and for resistance to different classes of antibiotics and PFGE. Nineteen isolates were confirmed by PCR as V. parahaemolyticus. The tlh gene was present in 100% of isolates, the tdh gene was identified in two (10.5%) isolates, whereas the gene trh was not detected. Each isolate was resistant to at least one of the nine antimicrobials tested. Additionally, all isolates possessed the blaTEM-116 gene. The presence of this gene in V. parahaemolyticus indicates the possibility of spreading this gene in the environment. Atypical strains of V. parahaemolyticus were also detected in this study.
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Hossain M, Kim EY, Kim YR, Kim DG, Kong IS. Application of groEL gene for the species-specific detection of Vibrio parahaemolyticus by PCR. Lett Appl Microbiol 2011; 54:67-72. [DOI: 10.1111/j.1472-765x.2011.03174.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Teh KH, Flint S, Palmer J, Lindsay D, Andrewes P, Bremer P. Thermo-resistant enzyme-producing bacteria isolated from the internal surfaces of raw milk tankers. Int Dairy J 2011. [DOI: 10.1016/j.idairyj.2011.04.013] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Di Pinto A, Terio V, Novello L, Tantillo G. Comparison between thiosulphate-citrate-bile salt sucrose (TCBS) agar and CHROMagar Vibrio for isolating Vibrio parahaemolyticus. Food Control 2011. [DOI: 10.1016/j.foodcont.2010.06.013] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Oberbeckmann S, Wichels A, Maier T, Kostrzewa M, Raffelberg S, Gerdts G. A polyphasic approach for the differentiation of environmental Vibrio isolates from temperate waters. FEMS Microbiol Ecol 2010; 75:145-62. [DOI: 10.1111/j.1574-6941.2010.00998.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Fabbro C, Cataletto B, Del Negro P. Detection of pathogenic Vibrio parahaemolyticus through biochemical and molecular-based methodologies in coastal waters of the Gulf of Trieste (North Adriatic Sea). FEMS Microbiol Lett 2010; 307:158-64. [PMID: 20412305 DOI: 10.1111/j.1574-6968.2010.01969.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Culturable vibrios were isolated from seawater collected during an annual sampling study performed along the Gulf of Trieste coast (Northern Adriatic Sea), and conventional culturing and identification methods were used to investigate the presence of Vibrio parahaemolyticus. Biochemically selected Vibrio strains were subjected to phenotypical identification performed using Alsina's scheme, API 20E and API 20NE. PCR and sequence analysis of the 16S rRNA gene and detection of the species-specific toxR and tlh genes were carried out on strains presumptively identified as V. parahaemolyticus and on a set of unidentified strains to confirm biochemical characterizations. In addition, PCR assays targeting the virulence genes, tdh and trh, were carried out to detect pathogenic strains. PCR results were compared with phenotypic characterizations to evaluate the accuracy of the biochemical methods applied. False-negative identifications were obtained by all phenotypic-based procedures, while API 20E yielded only one false positive. Because the amplification of the 16S rRNA gene produced uncertain results, toxR and tlh gene detections were necessary to confirm the biochemical identifications. Finally, molecular characterization demonstrated the presence of V. parahaemolyticus trh-positive strains and underlined the difficulty in the recognition of the pathogenic environmental organism using conventional methods.
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Affiliation(s)
- Cinzia Fabbro
- Dipartimento di Oceanografia Biologica, Istituto Nazionale di Oceanografia e Geofisica Sperimentale (OGS), Trieste, Italy.
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Yu S, Chen W, Wang D, He X, Zhu X, Shi X. Species-specific PCR detection of the food-borne pathogen Vibrio parahaemolyticus using the irgB gene identified by comparative genomic analysis. FEMS Microbiol Lett 2010; 307:65-71. [PMID: 20402781 DOI: 10.1111/j.1574-6968.2010.01952.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Vibrio parahaemolyticus is an enteric pathogen, which can cause acute gastroenteritis in humans after consumption of raw or partially cooked seafood, and specific molecular markers are necessary for its accurate identification by PCR methods. In the present study, 23 protein-coding sequences were identified by the comparative genomics method as V. parahaemolyticus-specific candidate markers. We targeted the irgB gene (vp2603), coding for iron-regulated virulence regulatory protein IrgB, in order to develop a PCR method for the detection of V. parahaemolyticus. PCR specificity was identified by amplification of 293 V. parahaemolyticus templates and by the loss of a PCR product with 11 strains from other Vibrio species and 35 non-Vibrio bacterial strains. The PCR assay had the 369-bp fragment and the sensitivity of 0.17 pg purified genomic DNA from V. parahaemolyticus. Furthermore, a multiplex PCR assay for the detection of total and virulent strains of V. parahaemolyticus was developed by targeting irgB, tdh and trh genes. These data indicated that the irgB gene is a new and effective marker for the detection of V. parahaemolyticus. In addition, this study demonstrates that genome sequence comparison has a powerful application in identifying specific markers for the detection and identification of bacterial pathogens.
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Affiliation(s)
- Shuijing Yu
- Department of Food Science and Technology, Joint Sino-US Food Safety Research Center & Bor Luh Food Safety Center, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China
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Rosec JP, Simon M, Causse V, Boudjemaa M. Detection of total and pathogenic Vibrio parahaemolyticus in shellfish: Comparison of PCR protocols using pR72H or toxR targets with a culture method. Int J Food Microbiol 2009; 129:136-45. [DOI: 10.1016/j.ijfoodmicro.2008.11.017] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2008] [Revised: 11/04/2008] [Accepted: 11/09/2008] [Indexed: 11/26/2022]
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Han H, Wong HC, Kan B, Guo Z, Zeng X, Yin S, Liu X, Yang R, Zhou D. Genome plasticity of Vibrio parahaemolyticus: microevolution of the 'pandemic group'. BMC Genomics 2008; 9:570. [PMID: 19038058 PMCID: PMC2612023 DOI: 10.1186/1471-2164-9-570] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2008] [Accepted: 11/28/2008] [Indexed: 11/10/2022] Open
Abstract
Background Outbreak of V. parahaemolyticus infections occurred since 1996 was linked to a proposed clonal complex, the pandemic group. The whole genome sequence provides an unprecedented opportunity for dissecting genome plasticity and phylogeny of the populations of V. parahaemolyticus. In the present work, a whole-genome cDNA microarray was constructed to compare the genomic contents of a collection of 174 strains of V. parahaemolyticus. Results Genes that present variably in the genome accounted for about 22% of the whole gene pool on the genome. The phylogenetic analysis of microarray data generated a minimum spanning tree that depicted the phylogenetic structure of the 174 strains. Strains were assigned into five complexes (C1 to C5), and those in each complex were related genetically and phylogenetically. C3 and C4 represented highly virulent clinical clones. C2 and C3 constituted two different clonal complexes 'old-O3:K6 clone' and 'pandemic clone', respectively. C3 included all the 39 pandemic strains tested (trh-, tdh+ and GS-PCR+), while C2 contained 12 pre-1996 'old' O3:K6 strains (trh+, tdh- and GS-PCR-) tested herein. The pandemic clone (post-1996 'new' O3:K6 and its derivates O4:K68, O1:K25, O1:KUT and O6:K18) might be emerged from the old-O3:K6 clone, which was promoted by acquisition of toxRS/new sequence and genomic islands. A phylogenetic intermediate O3:K6 clade (trh-, tdh- and GS-PCR+) was identified between the pandemic and old-O3:K6 clones. Conclusion A comprehensive overview of genomic contents in a large collection of global isolates from the microarray-based comparative genomic hybridization data enabled us to construct a phylogenetic structure of V. parahaemolyticus and an evolutionary history of the pandemic group (clone) of this pathogen.
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Affiliation(s)
- Haihong Han
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, PR China.
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Awong-Taylor J, Craven KS, Griffiths L, Bass C, Muscarella M. Comparison of biochemical and molecular methods for the identification of bacterial isolates associated with failed loggerhead sea turtle eggs. J Appl Microbiol 2007; 104:1244-51. [PMID: 18028359 DOI: 10.1111/j.1365-2672.2007.03650.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIMS Comparison of biochemical vs molecular methods for identification of microbial populations associated with failed loggerhead turtle eggs. METHODS AND RESULTS Two biochemical (API and Microgen) and one molecular methods (16s rRNA analysis) were compared in the areas of cost, identification, corroboration of data with other methods, ease of use, resources and software. The molecular method was costly and identified only 66% of the isolates tested compared with 74% for API. A 74% discrepancy in identifications occurred between API and 16s rRNA analysis. The two biochemical methods were comparable in cost, but Microgen was easier to use and yielded the lowest discrepancy among identifications (29%) when compared with both API 20 enteric (API 20E) and API 20 nonenteric (API 20NE) combined. A comparison of API 20E and API 20NE indicated an 83% discrepancy between the two methods. CONCLUSIONS The Microgen identification system appears to be better suited than API or 16s rRNA analysis for identification of environmental isolates associated with failed loggerhead eggs. SIGNIFICANCE AND IMPACT OF THE STUDY Most identification methods are not intended for use with environmental isolates. A comparison of identification systems would provide better options for identifying environmental bacteria for ecological studies.
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Affiliation(s)
- J Awong-Taylor
- Department of Biology, Armstrong Atlantic State University, Savannah, GA, USA.
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Bauer A, Rørvik LM. A novel multiplex PCR for the identification of Vibrio parahaemolyticus, Vibrio cholerae and Vibrio vulnificus. Lett Appl Microbiol 2007; 45:371-5. [PMID: 17897378 DOI: 10.1111/j.1472-765x.2007.02195.x] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
AIM To establish a simple multiplex polymerase chain reaction (PCR) that will identify Vibrio parahaemolyticus, Vibrio cholerae and Vibrio vulnificus. METHODS AND RESULTS A total of 429 Vibrio spp. from various origins were tested with the novel primers targeting toxR. The reverse primers were all designed to be species specific, while the forward primer was universal. The primers correctly identified all the V. parahaemolyticus, V. cholerae and V. vulnificus isolates tested. CONCLUSIONS The toxR multiplex PCR works well when the initial colony morphology is known. If not, Vibrio alginolyticus might represent a diagnostic obstacle. SIGNIFICANCE AND IMPACT OF THE STUDY The method provides a fast and reliable way of identifying the main Vibrio spp. involved in food-borne disease. The method could prove very useful for laboratories working with identification of these Vibrio spp.
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Affiliation(s)
- A Bauer
- Norwegian School of Veterinary Science, Department of Food Safety and Infection Biology, Oslo, Norway.
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