1
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Azinheiro S, Roumani F, Rodríguez-Lorenzo L, Carvalho J, Prado M, Garrido-Maestu A. Combination of Recombinase Polymerase Amplification with SYBR Green I for naked-eye, same-day detection of Escherichia coli O157:H7 in ground meat. Food Control 2022. [DOI: 10.1016/j.foodcont.2021.108494] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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2
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Zhang T, Li HT, Xia X, Liu J, Lu Y, Khan MR, Deng S, Busquets R, He G, He Q, Zhang J, Deng R. Direct Detection of Foodborne Pathogens via a Proximal DNA Probe-Based CRISPR-Cas12 Assay. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:12828-12836. [PMID: 34694123 DOI: 10.1021/acs.jafc.1c04663] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Foodborne pathogens can cause illnesses. Existing tools for detecting foodborne pathogens are typically time-consuming or require complex protocols. Here, we report an assay to directly analyze pathogenic genes based on CRISPR-Cas12. This new test, termed proximal DNA probe-based CRISPR-Cas12 (PPCas12), facilitates the detection of foodborne pathogens without amplification steps. The elimination of the nucleic acid amplification process dramatically reduced the processing time, complexity, and costs in the analysis of foodborne pathogens. The substitution of the frequently used dually labeled DNA reporter with a proximal DNA probe in the PPCas12 assay led to a 4-fold sensitivity enhancement. PPCas12 offered a limit of detection of 619 colony-forming units in the detection of Salmonella enterica (S. enterica) without the nucleic acid amplification process. The specific recognition of genes via PPCas12 allowed distinguishing S. enterica from other foodborne pathogens. The PPCas12 assay was applied in the screening of S. enterica contamination on fresh eggs with high precision. Hence, the new PPCas12 assay will be a valuable tool for on-site monitoring of foodborne pathogens.
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Affiliation(s)
- Ting Zhang
- College of Biomass Science and Engineering, Healthy Food Evaluation Research Center, Sichuan University, Chengdu 610065, China
| | - Hai-Tao Li
- Tianjin Physical & Chemical Analysis Center, Tianjin 300051, China
| | - Xuhan Xia
- College of Biomass Science and Engineering, Healthy Food Evaluation Research Center, Sichuan University, Chengdu 610065, China
| | - Jun Liu
- Chengdu Customs Technology Center, Chengdu 610041, China
| | - Yunhao Lu
- College of Biomass Science and Engineering, Healthy Food Evaluation Research Center, Sichuan University, Chengdu 610065, China
| | - Mohammad Rizwan Khan
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Sha Deng
- College of Biomass Science and Engineering, Healthy Food Evaluation Research Center, Sichuan University, Chengdu 610065, China
| | - Rosa Busquets
- School of Life Sciences, Pharmacy and Chemistry, Kingston University, Penrhyn Road, KT1 2EE Kingston Upon Thames, United Kingdom
| | - Guiping He
- College of Biomass Science and Engineering, Healthy Food Evaluation Research Center, Sichuan University, Chengdu 610065, China
| | - Qiang He
- College of Biomass Science and Engineering, Healthy Food Evaluation Research Center, Sichuan University, Chengdu 610065, China
| | - Jiaqi Zhang
- College of Biomass Science and Engineering, Healthy Food Evaluation Research Center, Sichuan University, Chengdu 610065, China
| | - Ruijie Deng
- College of Biomass Science and Engineering, Healthy Food Evaluation Research Center, Sichuan University, Chengdu 610065, China
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3
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Wang P, Liao L, Ma C, Zhang X, Yu J, Yi L, Liu X, Shen H, Gao S, Lu Q. Duplex On-Site Detection of Vibrio cholerae and Vibrio vulnificus by Recombinase Polymerase Amplification and Three-Segment Lateral Flow Strips. BIOSENSORS-BASEL 2021; 11:bios11050151. [PMID: 34066017 PMCID: PMC8151630 DOI: 10.3390/bios11050151] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/07/2021] [Accepted: 05/10/2021] [Indexed: 01/16/2023]
Abstract
Vibrio cholerae and Vibrio vulnificus are two most reported foodborne Vibrio pathogens related to seafood. Due to global ocean warming and an increase in seafood consumption worldwide, foodborne illnesses related to infection of these two bacteria are growing, leading to food safety issues and economic consequences. Molecular detection methods targeting species-specific genes are effective tools in the fight against bacterial infections for food safety. In this study, a duplex detection biosensor based on isothermal recombinase polymerase amplification (RPA) and a three-segment lateral flow strip (LFS) has been established. The biosensor used lolB gene of Vibrio cholerae and empV gene of Vibrio vulnificus as the detection markers based on previous reports. A duplex RPA reaction for both targets were constructed, and two chemical labels, FITC and DIG, of the amplification products were carefully tested for effective and accurate visualization on the strip. The biosensor demonstrated good specificity and achieved a sensitivity of 101 copies per reaction or one colony forming unit (CFU)/10 g of spiked food for both bacteria. Validation with clinical samples showed results consistent with that of real-time polymerase chain reaction. The detection process was simple and fast with a 30-min reaction at 37 °C and visualization on the strip within 5 min. With little dependence on laboratory settings, this biosensor was suitable for on-site detection, and the duplex system enabled simultaneous detection of the two important foodborne bacteria. Moreover, the principle can be extended to healthcare and food safety applications for other pathogens.
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Affiliation(s)
- Pei Wang
- Key Laboratory of Molecular Biophysics of Ministry of Education, Department of Biomedical Engineering, College of Life Science and Technology, Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan 430074, China; (P.W.); (L.Y.); (X.L.)
| | - Lei Liao
- Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, Jiangsu Key Laboratory of Marine Biological Resources and Environment, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, School of Pharmacy, Jiangsu Ocean University, Lianyungang 222005, China; (L.L.); (C.M.); (X.Z.)
| | - Chao Ma
- Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, Jiangsu Key Laboratory of Marine Biological Resources and Environment, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, School of Pharmacy, Jiangsu Ocean University, Lianyungang 222005, China; (L.L.); (C.M.); (X.Z.)
| | - Xue Zhang
- Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, Jiangsu Key Laboratory of Marine Biological Resources and Environment, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, School of Pharmacy, Jiangsu Ocean University, Lianyungang 222005, China; (L.L.); (C.M.); (X.Z.)
| | - Junwei Yu
- Ustar Biotechnologies (Hangzhou) Ltd., Hangzhou 310053, China;
| | - Longyu Yi
- Key Laboratory of Molecular Biophysics of Ministry of Education, Department of Biomedical Engineering, College of Life Science and Technology, Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan 430074, China; (P.W.); (L.Y.); (X.L.)
| | - Xin Liu
- Key Laboratory of Molecular Biophysics of Ministry of Education, Department of Biomedical Engineering, College of Life Science and Technology, Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan 430074, China; (P.W.); (L.Y.); (X.L.)
| | - Hui Shen
- Jiangsu Institute of Oceanology and Marine Fisheries, Nantong 226007, China;
| | - Song Gao
- Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, Jiangsu Key Laboratory of Marine Biological Resources and Environment, Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, School of Pharmacy, Jiangsu Ocean University, Lianyungang 222005, China; (L.L.); (C.M.); (X.Z.)
- Correspondence: (S.G.); (Q.L.)
| | - Qunwei Lu
- Key Laboratory of Molecular Biophysics of Ministry of Education, Department of Biomedical Engineering, College of Life Science and Technology, Center for Human Genome Research, Huazhong University of Science and Technology, Wuhan 430074, China; (P.W.); (L.Y.); (X.L.)
- Correspondence: (S.G.); (Q.L.)
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4
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Garrido-Maestu A, Azinheiro S, Fuciños P, Carvalho J, Prado M. Comparative study of multiplex real-time recombinase polymerase amplification and ISO 11290-1 methods for the detection of Listeria monocytogenes in dairy products. Food Microbiol 2020; 92:103570. [PMID: 32950155 DOI: 10.1016/j.fm.2020.103570] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 06/09/2020] [Accepted: 06/09/2020] [Indexed: 01/12/2023]
Abstract
Dairy products have been implicated in foodborne infections caused by different bacterial pathogens. Among them, Listeria monocytogenes is of particular concern due to its ubiquity, resistance to sanitation processes and high mortality rates resulting from infection. These issues make the development of novel methods for the rapid detection of this bacterium of high interest. The evaluation of a novel multiplex real-time Recombinase Polymerase Amplification method including an internal amplification control is reported in the present work. The method performance was compared to that of the European reference method (ISO 11290-1) for the detection of the species in samples from 40 commercial products, including 14 UHT milk samples, 16 hard cheese samples, 6 infant dairy preparation samples and 4 fresh cheese samples. A limit of detection below 10 cfu/25 g or mL sample was achieved, and values higher than 90% were obtained for relative sensitivity, specificity, accuracy, positive and negative predictive values and the index (kappa) of concordance. Analysis was achieved within one working day, compared to the six days required using the ISO method. Moreover, slight modification of the ISO 11290-1 method to include secondary enrichment in half Fraser broth resulted in the confirmation of all positive samples.
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Affiliation(s)
- Alejandro Garrido-Maestu
- International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330, Braga, Portugal.
| | - Sarah Azinheiro
- International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330, Braga, Portugal
| | - Pablo Fuciños
- International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330, Braga, Portugal
| | - Joana Carvalho
- International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330, Braga, Portugal
| | - Marta Prado
- International Iberian Nanotechnology Laboratory, Av. Mestre José Veiga s/n, 4715-330, Braga, Portugal
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5
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Bonnin-Jusserand M, Copin S, Le Bris C, Brauge T, Gay M, Brisabois A, Grard T, Midelet-Bourdin G. Vibrio species involved in seafood-borne outbreaks (Vibrio cholerae, V. parahaemolyticus and V. vulnificus): Review of microbiological versus recent molecular detection methods in seafood products. Crit Rev Food Sci Nutr 2017; 59:597-610. [DOI: 10.1080/10408398.2017.1384715] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Maryse Bonnin-Jusserand
- Univ. Littoral Côte d'Opale, convention ANSES, EA 7394 – ICV – Institut Charles Viollette, Boulogne-sur-Mer, France
- INRA, France
- Univ. Lille, Lille, France
- ISA, Lille, France
- Univ. Artois, Arras, France
| | - Stéphanie Copin
- French Agency for Food, Environmental and Occupational Health & Safety (ANSES), Laboratory for Food Safety, Boulevard du Bassin Napoléon, Boulogne-sur-Mer, France
| | - Cédric Le Bris
- Univ. Littoral Côte d'Opale, convention ANSES, EA 7394 – ICV – Institut Charles Viollette, Boulogne-sur-Mer, France
| | - Thomas Brauge
- French Agency for Food, Environmental and Occupational Health & Safety (ANSES), Laboratory for Food Safety, Boulevard du Bassin Napoléon, Boulogne-sur-Mer, France
| | - Mélanie Gay
- French Agency for Food, Environmental and Occupational Health & Safety (ANSES), Laboratory for Food Safety, Boulevard du Bassin Napoléon, Boulogne-sur-Mer, France
| | - Anne Brisabois
- French Agency for Food, Environmental and Occupational Health & Safety (ANSES), Laboratory for Food Safety, Boulevard du Bassin Napoléon, Boulogne-sur-Mer, France
| | - Thierry Grard
- Univ. Littoral Côte d'Opale, convention ANSES, EA 7394 – ICV – Institut Charles Viollette, Boulogne-sur-Mer, France
| | - Graziella Midelet-Bourdin
- French Agency for Food, Environmental and Occupational Health & Safety (ANSES), Laboratory for Food Safety, Boulevard du Bassin Napoléon, Boulogne-sur-Mer, France
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6
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Garrido-Maestu A, Lozano-León A, Rodríguez-Souto RR, Vieites-Maneiro R, Chapela MJ, Cabado AG. Presence of pathogenic Vibrio species in fresh mussels harvested in the southern Rias of Galicia (NW Spain). Food Control 2016. [DOI: 10.1016/j.foodcont.2015.06.054] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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7
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Garrido-Maestu A, Chapela MJ, Peñaranda E, Cabado AG. Re-evaluation of Enhanced qPCR Prevalidated Method for Next-day Detection ofSalmonellaspp.,Shigellaspp.,Escherichia coliO157 andListeria monocytogenes. FOOD BIOTECHNOL 2015. [DOI: 10.1080/08905436.2015.1091977] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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8
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Mo QH, Wang HB, Tan H, An SL, Feng ZL, Wang Q, Lin JC, Yang Z. Optimization and head-to-head comparison of MISSR-PCR, ERIC-PCR, RAPD and 16S rRNA evolutionary clock for the genotyping of Vibrio cholerae isolated in China. Indian J Med Microbiol 2015; 33:516-23. [DOI: 10.4103/0255-0857.167321] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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9
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Lin Y, Hamme AT. Gold Nanoparticle Labeling Based ICP-MS Detection/Measurement of Bacteria, and Their Quantitative Photothermal Destruction. J Mater Chem B 2015; 3:3573-3582. [PMID: 26417447 PMCID: PMC4582679 DOI: 10.1039/c5tb00223k] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Bacteria such as Salmonella and E. coli present a great challenge in public health care in today's society. Protection of public safety against bacterial contamination and rapid diagnosis of infection require simple and fast assays for the detection and elimination of bacterial pathogens. After utilizing Salmonella DT104 as an example bacterial strain for our investigation, we report a rapid and sensitive assay for the qualitative and quantitative detection of bacteria by using antibody affinity binding, popcorn shaped gold nanoparticle (GNPOPs) labeling, surfance enchanced Raman spectroscopy (SERS), and inductively coupled plasma mass spectrometry (ICP-MS) detection. For qualitative analysis, our assay can detect Salmonella within 10 min by Raman spectroscopy; for quantitative analysis, our assay has the ability to measure as few as 100 Salmonella DT104 in a 1 mL sample (100 CFU/mL) within 40 min. Based on the quantitative detection, we investigated the quantitative destruction of Salmonella DT104, and the assay's photothermal efficiency in order to reduce the amount of GNPOPs in the assay to ultimately to eliminate any potential side effects/toxicity to the surrounding cells in vivo. Results suggest that our assay may serve as a promising candidate for qualitative and quantitative detection and elimination of a variety of bacterial pathogens.
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Affiliation(s)
- Yunfeng Lin
- Department of Chemistry and Biochemistry, Jackson State University, 1400 J R Lynch street, Jackson, MS 39217, USA
| | - Ashton T. Hamme
- Department of Chemistry and Biochemistry, Jackson State University, 1400 J R Lynch street, Jackson, MS 39217, USA
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10
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lolB gene, a valid alternative for qPCR detection of Vibrio cholerae in food and environmental samples. Food Microbiol 2015; 46:535-540. [DOI: 10.1016/j.fm.2014.09.012] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Revised: 09/11/2014] [Accepted: 09/21/2014] [Indexed: 01/23/2023]
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11
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Garrido-Maestu A, Chapela MJ, Peñaranda E, Vieites JM, Cabado AG. In-house validation of novel multiplex real-time PCR gene combination for the simultaneous detection of the main human pathogenic vibrios (Vibrio cholerae, Vibrio parahaemolyticus, and Vibrio vulnificus). Food Control 2014. [DOI: 10.1016/j.foodcont.2013.09.026] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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12
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Application of a novel pathogenicity marker in a multiplex real-time PCR method to assess total and pathogenic Vibrio vulnificus in food and environmental samples. Food Control 2014. [DOI: 10.1016/j.foodcont.2013.07.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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13
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Zhao J, Kang L, Hu R, Gao S, Xin W, Chen W, Wang J. Rapid oligonucleotide suspension array-based multiplex detection of bacterial pathogens. Foodborne Pathog Dis 2013; 10:896-903. [PMID: 23947819 DOI: 10.1089/fpd.2012.1476] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
A gene-specific microsphere suspension array coupled with 15-plex polymerase chain reaction (PCR) was developed to screen bacterial samples rapidly for 10 strains of bacteria: Shigella spp. (S. flexneri, S. dysenteriae, and S. sonnei), Staphylococcus aureus, Vibrio cholerae (serology O1 and O139), Legionella pneumophila, and Clostridium botulinum (types A, B, and E). Fifteen sets of highly validated primers were chosen to amplify target genes simultaneously. Corresponding oligonucleotide probes directly conjugated with microsphere sets were used to specifically identify PCR amplicons. Sensitivity tests revealed that the array coupled with single PCR was able to detect purified genomic DNA at concentrations as low as 10 copies/μL, while the multiplex detection limit was 10-10⁴ copies/μL. The assay was validated using water samples artificially spiked with S. aureus and S. dysenteriae, as well as water specimens from swimming pools previously identified to contain S. aureus.
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Affiliation(s)
- Jinyin Zhao
- 1 State Key Laboratory of Pathogen and Biosecurity, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences , Beijing, China
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14
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Garrido A, Chapela MJ, Román B, Fajardo P, Vieites JM, Cabado AG. In-house validation of a multiplex real-time PCR method for simultaneous detection of Salmonella spp., Escherichia coli O157 and Listeria monocytogenes. Int J Food Microbiol 2013; 164:92-8. [PMID: 23624537 DOI: 10.1016/j.ijfoodmicro.2013.03.024] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Revised: 02/24/2013] [Accepted: 03/26/2013] [Indexed: 10/27/2022]
Abstract
A wide variety of qPCR methods currently exist for Salmonella spp., Escherichia coli O157 and Listeria monocytogenes detection. These methods target several genes and use different detection chemistries, either in simplex or in multiplex formats. However, the majority of these methods have not been carefully validated, and the number of validated methods that use multiplex qPCR is even lower. The aim of the present study was to develop and validate a multiplex qPCR method from previously validated simplex qPCR primers and probes. A modified broth medium was selected and primary and secondary enrichment times were further optimized. Efficiency of the newly combined qPCR system was comprised between 91% and 108%, for simplex and multiplex analyses. A total of 152 food and environmental, natural and spiked samples, were analyzed for the evaluation of the method obtaining values above 91% that were reached for all the quality parameters analyzed. A very low limit of detection (5 cfu/25 g after enrichment) for simultaneous identification of these 3 pathogens was obtained.
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Affiliation(s)
- Alejandro Garrido
- Microbiology and Toxins Area, ANFACO-CECOPESCA, Campus Univ. 16, 36310 Vigo PO, Spain
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15
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A new multiplex real-time PCR developed method for Salmonella spp. and Listeria monocytogenes detection in food and environmental samples. Food Control 2013. [DOI: 10.1016/j.foodcont.2012.06.029] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Garrido A, Chapela MJ, Ferreira M, Atanassova M, Fajardo P, Lago J, Vieites JM, Cabado AG. Development of a multiplex real-time PCR method for pathogenic Vibrio parahaemolyticus detection (tdh+ and trh+). Food Control 2012. [DOI: 10.1016/j.foodcont.2011.09.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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17
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Shim YH, Seong RS, Kim DS, Kang SJ, Chang SY, Kim HJ. Utilization of real-time PCR to detect Rangifer Cornu contamination in Cervi Parvum Cornu. Arch Pharm Res 2011; 34:237-44. [PMID: 21380807 DOI: 10.1007/s12272-011-0209-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2010] [Revised: 10/02/2010] [Accepted: 11/09/2010] [Indexed: 11/30/2022]
Abstract
Cervi parvum cornu (CPC) is a well-known ethnopharmacological source, whereas Rangifer cornu (RC) is not considered to be a major source. CPC is distributed in sliced form. Addition of RC to CPC has become an issue in CPC distribution because the appearance of sliced RC is not different from sliced CPC. Therefore, a real-time polymerase chain reaction (PCR) method was developed in this study to detect contaminating RC in CPC. The C-VIC and R-FAM primer/probe sets were designed to specifically amplify CPC and RC DNA, respectively. The specificities and sensitivities of real-time PCR using two primer/probe sets and the applicability of the real-time PCR to powder mixtures, which involved mixtures of powdered CPC and powdered RC in diverse ratios, were evaluated. Real-time PCR using C-VIC and R-FAM primer/probe sets specifically and sensitively amplified both CPC and RC DNA. Furthermore, real-time RCR sensitively detected RC DNA in the powder mixtures of CPC and RC. These results indicate that this real-time PCR method using two primer/probe sets is sufficiently applicable for the detection of contaminant RC in CPC.
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Affiliation(s)
- Young Hun Shim
- National Institute of Food and Drug Safety Evaluation, Cheonwon, Korea.
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18
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Cho MC, Noh SA, Kim MN, Kim KM. Direct Application of Multiplex PCR on Stool Specimens for Detection of Enteropathogenic Bacteria. ACTA ACUST UNITED AC 2010. [DOI: 10.5145/kjcm.2010.13.4.162] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Min-Chul Cho
- Department of Laboratory Medicine, Asan Medical Center and University of Ulsan College of Medicine, Seoul, Korea
| | - Sin-Ae Noh
- Department of Laboratory Medicine, Asan Medical Center and University of Ulsan College of Medicine, Seoul, Korea
| | - Mi-Na Kim
- Department of Laboratory Medicine, Asan Medical Center and University of Ulsan College of Medicine, Seoul, Korea
| | - Kyoung-Mo Kim
- Department of Pediatrics, Asan Medical Center and University of Ulsan College of Medicine, Seoul, Korea
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