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Ligong Z, Hongxia L, Junjie L, Lu Z, Bie X. A duplex real-time NASBA assay targeting serotype-specific gene for rapid detection of viable S. enterica serovar Paratyphi C in retail foods of animal origin. Can J Microbiol 2022; 68:259-268. [PMID: 35025610 DOI: 10.1139/cjm-2021-0054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Salmonella enterica serovars Paratyphi C is highly adapted to humans and can cause a typhoid-like disease with high mortality rates. In this study, three serovar-specific genes were determined for S. Paratyphi C, SPC_0871,SPC_0872, and SPC_0908, by comparative genomics method. Based on SPC_0908 and xcd gene for testing Salmonella spp., we have developed a duplex real-time nucleic acid sequence-based amplification (real-time NASBA) with molecular beacon approach for simultaneous detection of viable cells of Salmonella spp. and serotype Paratyphi C. The test selectively and consistently detected 53 Salmonella spp. (representing 31 serotypes) and 18 non-Salmonella strains. Additionally, the method showed high resistance to interference by natural background flora in pork and chicken samples. The sensitivity of the established approach was determined to be 4.89 CFU/25 g in artificially contaminated pork and chicken samples after pre-enrichment. We propose this NASBA-based protocol as a potential detection method for Salmonella spp. and serotype Paratyphi C in food of animal origin.
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Affiliation(s)
- Zhai Ligong
- Anhui Science and Technology University, 177515, Bengbu, China, 233100;
| | - Liu Hongxia
- Ministry of Agriculture of China, Nanjing, China;
| | - Li Junjie
- Nanjing Agricultural University, 70578, Nanjing, Jiangsu, China;
| | - Zhaoxin Lu
- Colleges of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, China;
| | - Xiaomei Bie
- Colleges of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, China;
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Cetin E, Temelli S, Eyigor A. Salmonella prevalence and serovar distribution in healthy slaughter sheep and cattle determined by ISO 6579 and VIDAS UP Salmonella methods. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2019; 56:5317-5325. [PMID: 31749479 PMCID: PMC6838269 DOI: 10.1007/s13197-019-04002-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 07/15/2019] [Accepted: 08/01/2019] [Indexed: 10/26/2022]
Abstract
Prevalence of Salmonella in slaughter sheep and cattle was determined by International Organization for Standardization Method 6579 (ISO) and Vitek Immunodiagnostic Assay System UP Salmonella Phage Technology (VIDAS UP Salmonella SPT-VIDAS UP). A total of 400 healthy slaughter sheep (n = 200) and cattle (n = 200) carcass (C), fecal content (FC), mesenteric lymph node (MLN), liver (L), kidney (K), spleen (S) and gall bladder (GB) were randomly sampled and analysed. ISO and VIDAS UP results indicated 13 (3.25%) and 17 (4.25%) of 400 animals carried Salmonella, respectively, regardless of sample type. There was no isolation from L, S, GB, while 2 C (0.5%), 6 FC (1.5%), 7 MLN (1.75%), 3 K (0.75%) were contaminated with Salmonella. S. Typhimurium (27.8%), S. Enteritidis (22.2%), S. Newport (22.2%) were the three dominant serovars, followed by S. Kentucky (11.1%), S. Umbilo (5.6%), S. Corvallis (5.6%), and S. Albany (5.6%). Overall prevalence in 2800 samples was 0.46% by ISO and 0.61% by VIDAS UP. High relative trueness (RT: 99.79%) of VIDAS UP with a substantial agreement to ISO (κ value: 0.80) indicated its efficiency to accompany ISO to monitor Salmonella in slaughter animals. As the first report to evaluate ISO and VIDAS UP in detecting Salmonella from slaughter sheep and cattle, this current prevalence signifies a risk for public health in red-meat and related products in Turkey.
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Affiliation(s)
- Ece Cetin
- Department of Food Hygiene and Technology, Faculty of Veterinary Medicine, Tekirdag Namık Kemal University, 59030 Tekirdağ, Turkey
| | - Seran Temelli
- Department of Food Hygiene and Technology, Faculty of Veterinary Medicine, Bursa Uludag University, 16059 Bursa, Turkey
| | - Aysegul Eyigor
- Department of Food Hygiene and Technology, Faculty of Veterinary Medicine, Bursa Uludag University, 16059 Bursa, Turkey
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Dunne M, Hupfeld M, Klumpp J, Loessner MJ. Molecular Basis of Bacterial Host Interactions by Gram-Positive Targeting Bacteriophages. Viruses 2018; 10:v10080397. [PMID: 30060549 PMCID: PMC6115969 DOI: 10.3390/v10080397] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 07/24/2018] [Accepted: 07/25/2018] [Indexed: 12/29/2022] Open
Abstract
The inherent ability of bacteriophages (phages) to infect specific bacterial hosts makes them ideal candidates to develop into antimicrobial agents for pathogen-specific remediation in food processing, biotechnology, and medicine (e.g., phage therapy). Conversely, phage contaminations of fermentation processes are a major concern to dairy and bioprocessing industries. The first stage of any successful phage infection is adsorption to a bacterial host cell, mediated by receptor-binding proteins (RBPs). As the first point of contact, the binding specificity of phage RBPs is the primary determinant of bacterial host range, and thus defines the remediative potential of a phage for a given bacterium. Co-evolution of RBPs and their bacterial receptors has forced endless adaptation cycles of phage-host interactions, which in turn has created a diverse array of phage adsorption mechanisms utilizing an assortment of RBPs. Over the last decade, these intricate mechanisms have been studied intensely using electron microscopy and X-ray crystallography, providing atomic-level details of this fundamental stage in the phage infection cycle. This review summarizes current knowledge surrounding the molecular basis of host interaction for various socioeconomically important Gram-positive targeting phage RBPs to their protein- and saccharide-based receptors. Special attention is paid to the abundant and best-characterized Siphoviridae family of tailed phages. Unravelling these complex phage-host dynamics is essential to harness the full potential of phage-based technologies, or for generating novel strategies to combat industrial phage contaminations.
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Affiliation(s)
- Matthew Dunne
- Institute of Food Nutrition and Health, ETH Zurich, Schmelzbergstrasse 7, 8092 Zurich, Switzerland.
| | - Mario Hupfeld
- Institute of Food Nutrition and Health, ETH Zurich, Schmelzbergstrasse 7, 8092 Zurich, Switzerland.
| | - Jochen Klumpp
- Institute of Food Nutrition and Health, ETH Zurich, Schmelzbergstrasse 7, 8092 Zurich, Switzerland.
| | - Martin J Loessner
- Institute of Food Nutrition and Health, ETH Zurich, Schmelzbergstrasse 7, 8092 Zurich, Switzerland.
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Zadernowska A, Chajęcka-Wierzchowska W. Prevalence, biofilm formation and virulence markers of Salmonella sp. and Yersinia enterocolitica in food of animal origin in Poland. Lebensm Wiss Technol 2017. [DOI: 10.1016/j.lwt.2016.10.007] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Iammarino M, Marino R, Albenzio M. How meaty? Detection and quantification of adulterants, foreign proteins and food additives in meat products. Int J Food Sci Technol 2016. [DOI: 10.1111/ijfs.13350] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Marco Iammarino
- Istituto Zooprofilattico Sperimentale Della Puglia E Della Basilicata; Via Manfredonia 20 Foggia 71121 Italy
| | - Rosaria Marino
- Department of the Sciences of Agriculture, Food and Environment (SAFE); University of Foggia; Via Napoli, 25 Foggia 71122 Italy
| | - Marzia Albenzio
- Department of the Sciences of Agriculture, Food and Environment (SAFE); University of Foggia; Via Napoli, 25 Foggia 71122 Italy
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Delbeke S, Ceuppens S, Holvoet K, Samuels E, Sampers I, Uyttendaele M. Multiplex real-time PCR and culture methods for detection of Shiga toxin-producing Escherichia coli and Salmonella Thompson in strawberries, a lettuce mix and basil. Int J Food Microbiol 2015; 193:1-7. [PMID: 25462916 DOI: 10.1016/j.ijfoodmicro.2014.10.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 10/03/2014] [Accepted: 10/05/2014] [Indexed: 11/27/2022]
Abstract
An appropriate approach of high throughput multi-screening was verified for Shiga toxin-producing Escherichia coli (STEC) and Salmonella spp. in strawberries, lettuce and basil. Sample replicates were inoculated with STEC O157 or O26 and Salmonella Thompson (ca. 10-70, 100-700 and 1000-7000 cfu/25 g) and analysed after 1 and 5 days of storage (strawberries and lettuce at 7 °C and basil at 10 °C). After 18-24 h of enrichment at 37 °C in buffered peptone water, detection was performed using the GeneDisc multiplex PCR (stx1, stx2, eae and iroB genes) and selective culture media for isolation of STEC (with immunomagnetic separation (IMS)) and Salmonella spp. in parallel. After 1 day, the pathogenic strains were recovered from all samples for all inoculum levels, whereas reduced detection rates of STEC O157 and S. Thompson were observed after 5 days of storage in case of strawberries, in particular for the lowest inoculums level, suggesting superior survival potential for STEC O26. Overall, this study indicates the ability of PCR based screening methods for reproducible multi-detection of low numbers (10-70 cfu/25 g) of STEC and Salmonella in this type of foods. However, for the basil samples, PCR needed twofold dilution of the DNA extract to overcome inhibition. It was noted that on several occasions growth of competitive microbiota obstructed finding presumptive colonies on the selective agar media, whereas the use of an additional agar medium such as CHROMagar STEC (without IMS) improved recovery rate of STEC.
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Affiliation(s)
- S Delbeke
- Laboratory of Food Microbiology and Food Preservation, Department of Food Safety and Food Quality, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium.
| | - S Ceuppens
- Laboratory of Food Microbiology and Food Preservation, Department of Food Safety and Food Quality, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - K Holvoet
- Laboratory of Food Microbiology and Food Preservation, Department of Food Safety and Food Quality, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium; Research Group EnBiChem, Department of Industrial Engineering and Technology, University College West-Flanders (Howest), Graaf Karel de Goedelaan 5, B-8500 Kortrijk, Belgium
| | - E Samuels
- Pall GeneDisc Technologies, 1 rue du Courtil, Centre CICEA, 35170 Bruz, France
| | - I Sampers
- Research Group EnBiChem, Department of Industrial Engineering and Technology, University College West-Flanders (Howest), Graaf Karel de Goedelaan 5, B-8500 Kortrijk, Belgium
| | - M Uyttendaele
- Laboratory of Food Microbiology and Food Preservation, Department of Food Safety and Food Quality, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
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Zadernowska A, Chajęcka-Wierzchowska W, Kłębukowska L. Vidas UP-enzyme-linked fluorescent immunoassay based on recombinant phage protein and fluorescence in situ hybridization as alternative methods for detection of Salmonella enterica serovars in meat. Foodborne Pathog Dis 2014; 11:747-52. [PMID: 24971928 DOI: 10.1089/fpd.2014.1738] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Several methods for the rapid and specific detection of Salmonella spp. in meat have been described. This study was conducted to evaluate the capability of the VIDAS(®) UP (SPT [Salmonella Phage Technology]), an enzyme-linked fluorescent immunoassay method, and fluorescence in situ hybridization (FISH) to complement the International Organization for Standardization Method 6579 (ISO) in detecting Salmonella spp. from beef, pork, and poultry meat samples. The meat was inoculated with a mixture of Salmonella spp. on three levels of contamination. It was also checked that the tests did not produce cross-reactions with other Enterobacteriaceae rods. On the basis of the results, the relative specificity, relative accordance, and relative sensitivity of the method were determined. In meat samples, Vidas UP and FISH detection results were in substantial agreement with ISO, with relative specificity, accordance, and sensitivity rates of 90%, 96.3%, and 100%, respectively, for Vidas UP and 100%, 100%, and 99.4%, respectively, for FISH. This is the first report on the evaluation of both Vidas UP and FISH compared to ISO for the rapid detection of Salmonella enterica serovars in meat.
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Affiliation(s)
- Anna Zadernowska
- Department of Industrial and Food Microbiology, Faculty of Food Sciences, University of Warmia and Mazury in Olsztyn , Olsztyn, Poland
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Modzelewska-Kapituła M, Maj-Sobotka K. S
almonella
sp. Occurrence in Minced Meat, Meat Preparations and Mechanically Separated Meat in Poland. J Food Saf 2014. [DOI: 10.1111/jfs.12105] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Monika Modzelewska-Kapituła
- Department of Meat Technology and Chemistry; Faculty of Food Sciences; University of Warmia and Mazury in Poland; Plac Cieszyński 1 10-718 Olsztyn Poland
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