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Zhong Y, Liu M, Ding Y, Wu Q, Zhang J, Ma G, Xu T, Wang Z, Chen M, Xue L, Ye Q, Wang J. Rapid fluorescence visualization of Yersinia enterocolitica by CRISPR/Cas12a using novel specific target obtained by pan-genome analysis. Lebensm Wiss Technol 2023. [DOI: 10.1016/j.lwt.2023.114500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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2
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Kumar Y. Isothermal amplification-based methods for assessment of microbiological safety and authenticity of meat and meat products. Food Control 2021. [DOI: 10.1016/j.foodcont.2020.107679] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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3
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Tan Y, Dong G, Xu H, Niu J, Lu W, Wang K, Dong H, Zhang S, Huang H, Hu G. Development of a cross-priming isothermal amplification assay based on the glycoprotein B gene for instant and rapid detection of feline herpesvirus type 1. Arch Virol 2020; 165:743-747. [PMID: 31980939 DOI: 10.1007/s00705-020-04526-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Accepted: 12/12/2019] [Indexed: 10/25/2022]
Abstract
A cross-priming isothermal amplification (CPA) assay was developed for detection of feline herpesvirus type 1 (FHV-1). In this assay, the target fragment of the FHV-1 glycoprotein B gene is amplified rapidly by Bst DNA polymerase at a constant temperature (63 °C, 45 min), using a simple thermostat. The assay had no cross-reactions with four types of feline viruses, and the detection limit was 100 copies/μl. The positive rate of clinical samples from CPA was 100% consistent with qPCR but higher than ordinary PCR, indicating its superiority to ordinary PCR. Visualization was achieved using SYBR Green I dye.
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Affiliation(s)
- Yuxin Tan
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Guoying Dong
- College of global change and Earth System Science, Beijing Normal University, Beijing, 100875, China
| | - Hefeng Xu
- China Medical University-The Queen's University of Belfast Joint College, Shenyang, 110122, China
| | - Jiangting Niu
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Wei Lu
- Animal Disease Prevention and Control Center, Changchun, 130012, China
| | - Kai Wang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Hao Dong
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, China
| | - Shuang Zhang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Hailong Huang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China
| | - Guixue Hu
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, 130118, China.
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Kumsiri R, Kanchanaphum P. A Comparison of Four Molecular Methods for Detection of Aflatoxin-Producing Aspergillus in Peanut and Dried Shrimp Samples Collected from Local Markets around Pathum Thani Province, Thailand. SCIENTIFICA 2020; 2020:8580451. [PMID: 33425428 PMCID: PMC7775171 DOI: 10.1155/2020/8580451] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 10/30/2020] [Accepted: 12/15/2020] [Indexed: 05/22/2023]
Abstract
Aspergillus flavus is an aflatoxin-producing fungus which is poisonous to humans and animals when consumed. Detecting the fungus can help to prevent this danger. The four molecular methods, namely, conventional isothermal amplification (LAMP), PCR, quantitative LAMP (qLAMP), and qPCR, were compared to determine their efficiency for A. flavus detection. Thirty samples of peanut and dried shrimp were collected from 15 markets around Pathum Thani Province in Thailand. The samples were artificially infected with 108 conidia/ml of A. flavus for 1 hr and enriched for one day to represent real contamination. The results show that the sensitivity detection for A. flavus in PCR, LAMP, qPCR, and qLAMP was 50 ng, 5 ng, 5 pg, and 5 pg, respectively. Aspergillus in 30 peanut and dried shrimp from the market was detected by all four methods. The detection rate was about 20%, 60%, 100%, and 100% with PCR, LAMP, qPCR, and qLAMP, respectively. The molecular detection technique, especially LAMP, qPCR, and qLAMP, can detect this pathogenic fungi very rapidly with high sensitivity and reliability in comparison to conventional PCR.
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Affiliation(s)
- Ratchanok Kumsiri
- Pathobiology Unit, Faculty of Science, Rangsit University, Pathumthani, Thailand
| | - Panan Kanchanaphum
- Biochemistry Unit, Faculty of Science, Rangsit University, Pathumthani, Thailand
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Leon-Velarde CG, Jun JW, Skurnik M. Yersinia Phages and Food Safety. Viruses 2019; 11:E1105. [PMID: 31795231 PMCID: PMC6950378 DOI: 10.3390/v11121105] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 11/26/2019] [Accepted: 11/26/2019] [Indexed: 12/31/2022] Open
Abstract
One of the human- and animal-pathogenic species in genus Yersinia is Yersinia enterocolitica, a food-borne zoonotic pathogen that causes enteric infections, mesenteric lymphadenitis, and sometimes sequelae such as reactive arthritis and erythema nodosum. Y. enterocolitica is able to proliferate at 4 C, making it dangerous if contaminated food products are stored under refrigeration. The most common source of Y. enterocolitica is raw pork meat. Microbiological detection of the bacteria from food products is hampered by its slow growth rate as other bacteria overgrow it. Bacteriophages can be exploited in several ways to increase food safety with regards to contamination by Y. enterocolitica. For example, Yersinia phages could be useful in keeping the contamination of food products under control, or, alternatively, the specificity of the phages could be exploited in developing rapid and sensitive diagnostic tools for the identification of the bacteria in food products. In this review, we will discuss the present state of the research on these topics.
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Affiliation(s)
- Carlos G. Leon-Velarde
- Agriculture and Food Laboratory, Laboratory Services Division, University of Guelph, Guelph, ON N1H 8J7, Canada;
| | - Jin Woo Jun
- Department of Aquaculture, Korea National College of Agriculture and Fisheries, Jeonju 54874, Korea;
| | - Mikael Skurnik
- Department of Bacteriology and Immunology, Medicum, Human Microbiome Research Program, Faculty of Medicine, University of Helsinki, 00014 HY Helsinki, Finland
- Division of Clinical Microbiology, HUSLAB, Helsinki University Hospital, 00029 HUS Helsinki, Finland
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Yan H, Zhang J, Ma D, Yin J. qPCR and loop mediated isothermal amplification for rapid detection of Ustilago tritici. PeerJ 2019; 7:e7766. [PMID: 31592112 PMCID: PMC6776072 DOI: 10.7717/peerj.7766] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 08/26/2019] [Indexed: 01/15/2023] Open
Abstract
Loose smut of wheat caused by the basidiomycete fungus Ustilago tritici, a seed-borne disease, is difficult to control because of the expanse of wheat planting area and difficulty in pathogen detection. In this study, real-time fluorescence quantitative PCR (qPCR) and loop-mediated isothermal amplification (LAMP) assays are used to rapidly amplify the DNA of U. tritici. Five pairs of primers for qPCR and two series primers for LAMP were designed. Primarily, the specificity of the primer was assessed by using genomic DNA of U. tritici, Fusarium graminearum, Blumeria graminis, Rhizoctonia cerealis, Puccinia striiformis, Bipolaris sorokiniana, and Alternaria solani as templates. Further, the amplification systems were optimized. Finally, the sensitivity of qPCR and LAMP assays were evaluated. The results showed that the primer Y-430 F/R, Y-307 F/R, Y-755 F/R, and Y-139 F/R for qPCR and primers L-139 and L-988 for LAMP could be used for U. tritici detection. In the sensitivity test, the detection limit of qPCR assay was identified as 10 pg μL−1 of genomic DNA, the detection limit for LAMP assay was 100 fg μL−1. We successfully performed qPCR and LAMP assays on wheat loose smut wheat samples. This paper establishes two methods for U. tritici detection, which can be used for diagnosis of wheat loose smut in the laboratory and in the field.
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Affiliation(s)
- Hanwen Yan
- Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Hubei Collaborative Innovation Center for Grain Industry, College of Agricultural, Yangtze University, Jingzhou, Hubei, China
| | - Jian Zhang
- Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Hubei Collaborative Innovation Center for Grain Industry, College of Agricultural, Yangtze University, Jingzhou, Hubei, China
| | - Dongfang Ma
- Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Hubei Collaborative Innovation Center for Grain Industry, College of Agricultural, Yangtze University, Jingzhou, Hubei, China
| | - Junliang Yin
- Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Hubei Collaborative Innovation Center for Grain Industry, College of Agricultural, Yangtze University, Jingzhou, Hubei, China
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Shoaib M, Shehzad A, Raza H, Niazi S, Khan IM, Akhtar W, Safdar W, Wang Z. A comprehensive review on the prevalence, pathogenesis and detection ofYersinia enterocolitica. RSC Adv 2019; 9:41010-41021. [PMID: 35540058 PMCID: PMC9076465 DOI: 10.1039/c9ra06988g] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Accepted: 10/31/2019] [Indexed: 01/23/2023] Open
Abstract
Food safety is imperative for a healthy life, but pathogens are still posing a significant life threat. “Yersiniosis” is caused by a pathogen named Yersinia enterocolitica and is characterized by diarrheal, ileitis, and mesenteric lymphadenitis types of sicknesses. This neglected pathogen starts its pathogenic activity by colonizing inside the intestinal tract of the host upon the ingestion of contaminated food. Y. enterocolitica remains a challenge for researchers and food handlers due to its growth habits, low concentrations in samples, morphological similarities with other bacteria and lack of rapid, cost-effective, and accurate detection methods. In this review, we presented recent information about its prevalence, biology, pathogenesis, and existing cultural, immunological, and molecular detection approaches. Our ultimate goal is to provide updated knowledge regarding this pathogen for the development of quick, effective, automated, and sensitive detection methods for the systematic detection of Y. enterocolitica. Food safety is imperative for a healthy life, but pathogens are still posing a significant life threat.![]()
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Affiliation(s)
- Muhammad Shoaib
- State Key Laboratory of Food Science and Technology
- Jiangnan University
- Wuxi
- China
- Synergetic Innovation Center of Food Safety and Nutrition
| | - Aamir Shehzad
- UniLaSalle
- Transformations & Agroressources Research Unit
- France
- National Institute of Food Science and Technology
- FFNHS
| | - Husnain Raza
- State Key Laboratory of Food Science and Technology
- Jiangnan University
- Wuxi
- China
- National Institute of Food Science and Technology
| | - Sobia Niazi
- State Key Laboratory of Food Science and Technology
- Jiangnan University
- Wuxi
- China
- National Institute of Food Science and Technology
| | - Imran Mahmood Khan
- State Key Laboratory of Food Science and Technology
- Jiangnan University
- Wuxi
- China
- Synergetic Innovation Center of Food Safety and Nutrition
| | - Wasim Akhtar
- Synergetic Innovation Center of Food Safety and Nutrition
- Jiangnan University
- Wuxi 214122
- People's Republic of China
| | - Waseem Safdar
- University Institute of Diet and Nutritional Sciences
- The University of Lahore-Islamabad Campus
- Islamabad
- Pakistan
| | - Zhouping Wang
- State Key Laboratory of Food Science and Technology
- Jiangnan University
- Wuxi
- China
- Synergetic Innovation Center of Food Safety and Nutrition
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8
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Loop-mediated isothermal amplification for visual detection of Vibrio parahaemolyticus using gold nanoparticles. Mikrochim Acta 2017; 185:35. [DOI: 10.1007/s00604-017-2594-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 11/27/2017] [Indexed: 02/06/2023]
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Kawai K, Inada M, Ito K, Hashimoto K, Nikaido M, Hata E, Katsuda K, Kiku Y, Tagawa Y, Hayashi T. Detection of bovine mastitis pathogens by loop-mediated isothermal amplification and an electrochemical DNA chip. J Vet Med Sci 2017; 79:1973-1977. [PMID: 29093278 PMCID: PMC5745174 DOI: 10.1292/jvms.17-0263] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Bovine mastitis causes significant economic losses in the dairy industry. Effective prevention of bovine mastitis requires an understanding of the infection status of a pathogenic microorganism in a herd that has not yet shown clinical signs of mastitis and appropriate treatment specific for the pathogenic microorganism. However, bacterial identification by culture has drawbacks in that the sensitivity may be low and the procedure can be complex. In this study, we developed a genetic detection method to identify mastitis pathogens using a simple and highly sensitive electrochemical DNA chip which can specifically detect bacterial DNA in milk specimens. First, we selected microorganisms belonging to 12 families and/or genera associated with mastitis for which testing should be performed. Next, we optimized the conditions for amplifying microorganism DNA by loop-mediated isothermal amplification (LAMP) using 32 primers and the use of a DNA chip capable of measuring all pathogens simultaneously. Sample detection could be completed in just a few hours using this method. Comparison of the results obtained with our DNA chip method and those obtained by bacterial culture verified that when the culture method was set to 100%, the total positive concordance rate of the DNA chip was 85.0% and the total negative concordance rate was 86.9%. Furthermore, the proposed method allows both rapid and highly sensitive detection of mastitis pathogens. We believe that this method will contribute to the development of an effective mastitis control program.
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Affiliation(s)
- Kazuhiro Kawai
- School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa 252-5201, Japan
| | - Mika Inada
- Toshiba Corporation, Kawasaki, Kanagawa 212-8582, Japan
| | - Keiko Ito
- Toshiba Corporation, Kawasaki, Kanagawa 212-8582, Japan
| | | | | | - Eiji Hata
- National Institute of Animal Health, National Agriculture and Food Research Organization, Sapporo, Hokkaido 062-0045, Japan
| | - Ken Katsuda
- National Institute of Animal Health, National Agriculture and Food Research Organization, Tsukuba, Ibaraki 305-0856, Japan
| | - Yoshio Kiku
- National Institute of Animal Health, National Agriculture and Food Research Organization, Sapporo, Hokkaido 062-0045, Japan
| | - Yuichi Tagawa
- National Institute of Animal Health, National Agriculture and Food Research Organization, Tsukuba, Ibaraki 305-0856, Japan
| | - Tomohito Hayashi
- National Institute of Animal Health, National Agriculture and Food Research Organization, Sapporo, Hokkaido 062-0045, Japan
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Kumar Y, Bansal S, Jaiswal P. Loop-Mediated Isothermal Amplification (LAMP): A Rapid and Sensitive Tool for Quality Assessment of Meat Products. Compr Rev Food Sci Food Saf 2017; 16:1359-1378. [DOI: 10.1111/1541-4337.12309] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 08/16/2017] [Accepted: 08/16/2017] [Indexed: 12/15/2022]
Affiliation(s)
- Yogesh Kumar
- ICAR-Central Inst. of Post-Harvest Engineering and Technology (CIPHET); Ludhiana India
| | - Sangita Bansal
- ICAR-Central Inst. of Post-Harvest Engineering and Technology (CIPHET); Ludhiana India
| | - Pranita Jaiswal
- ICAR-Central Inst. of Post-Harvest Engineering and Technology (CIPHET); Ludhiana India
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11
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Petsios S, Fredriksson-Ahomaa M, Sakkas H, Papadopoulou C. Conventional and molecular methods used in the detection and subtyping of Yersinia enterocolitica in food. Int J Food Microbiol 2016; 237:55-72. [DOI: 10.1016/j.ijfoodmicro.2016.08.015] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Revised: 07/28/2016] [Accepted: 08/11/2016] [Indexed: 01/08/2023]
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12
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Kalia VC, Kumar P. Genome Wide Search for Biomarkers to Diagnose Yersinia Infections. Indian J Microbiol 2015; 55:366-74. [PMID: 26543261 DOI: 10.1007/s12088-015-0552-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 09/01/2015] [Indexed: 01/12/2023] Open
Abstract
Bacterial identification on the basis of the highly conserved 16S rRNA (rrs) gene is limited by its presence in multiple copies and a very high level of similarity among them. The need is to look for other genes with unique characteristics to be used as biomarkers. Fifty-one sequenced genomes belonging to 10 different Yersinia species were used for searching genes common to all the genomes. Out of 304 common genes, 34 genes of sizes varying from 0.11 to 4.42 kb, were selected and subjected to in silico digestion with 10 different Restriction endonucleases (RE) (4-6 base cutters). Yersinia species have 6-7 copies of rrs per genome, which are difficult to distinguish by multiple sequence alignments or their RE digestion patterns. However, certain unique combinations of other common gene sequences-carB, fadJ, gluM, gltX, ileS, malE, nusA, ribD, and rlmL and their RE digestion patterns can be used as markers for identifying 21 strains belonging to 10 Yersinia species: Y. aldovae, Y. enterocolitica, Y. frederiksenii, Y. intermedia, Y. kristensenii, Y. pestis, Y. pseudotuberculosis, Y. rohdei, Y. ruckeri, and Y. similis. This approach can be applied for rapid diagnostic applications.
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Affiliation(s)
- Vipin Chandra Kalia
- Microbial Biotechnology and Genomics, CSIR - Institute of Genomics and Integrative Biology (IGIB), Delhi University Campus, Mall Road, Delhi, 110007 India
| | - Prasun Kumar
- Microbial Biotechnology and Genomics, CSIR - Institute of Genomics and Integrative Biology (IGIB), Delhi University Campus, Mall Road, Delhi, 110007 India
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Zhou C, Sun C, Ruan J, Zou H, Li Y. Determination of Yersinia enterocoliticain Food by Capillary Electrophoresis with Laser Induced Fluorescence Detection. ANAL LETT 2015. [DOI: 10.1080/00032719.2015.1012676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Gupta V, Gulati P, Bhagat N, Dhar MS, Virdi JS. Detection of Yersinia enterocolitica in food: an overview. Eur J Clin Microbiol Infect Dis 2014; 34:641-50. [PMID: 25410144 DOI: 10.1007/s10096-014-2276-7] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Accepted: 11/04/2014] [Indexed: 01/30/2023]
Abstract
Yersinia enterocolitica is a gastrointestinal pathogen which causes yersiniosis, an illness characterized by diarrhea, ileitis, and mesenteric lymphadenitis. Y. enterocolitica is transmitted via the feco-oral route by the consumption of contaminated food or water. Several phenotypic and genotypic methods have been developed to reliably detect Y. enterocolitica in food. However, the source of infection of many recently reported foodborne outbreaks remains obscure. The detection of this pathogen in food is a challenging task, since it shares similarities with other enteric bacteria. The presence of other microorganisms in the food samples makes it even more difficult to identify this slow-growing pathogen. Therefore, the present-day emphasis is on the development of sensitive, easily automated methods suitable for in-situ detection, allowing quick and cost-effective characterization of food samples. This review summarizes and compares the currently available cultural, immunological, and molecular methods, particularly in relation to their specific merits or demerits when implemented for the detection of Y. enterocolitica in food.
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Affiliation(s)
- V Gupta
- Medical Microbiology and Bioprocess Technology Laboratory, Department of Microbiology, Maharshi Dayanand University, Rohtak, Haryana, India
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Dhama K, Karthik K, Chakraborty S, Tiwari R, Kapoor S, Kumar A, Thomas P. Loop-mediated isothermal amplification of DNA (LAMP): a new diagnostic tool lights the world of diagnosis of animal and human pathogens: a review. Pak J Biol Sci 2014; 17:151-66. [PMID: 24783797 DOI: 10.3923/pjbs.2014.151.166] [Citation(s) in RCA: 111] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Diagnosis is an important part in case of animal husbandry as treatment of a disease depends on it. Advancement in molecular biology has generated various sophisticated tools like Polymerase Chain Reaction (PCR), its versions along with pen-side diagnostic techniques. Every diagnostic test however has both advantages and disadvantages; PCR is not an exception to this statement. To ease the odds faced by PCR several non-PCR techniques which can amplify DNA at a constant temperature has become the need of hour, thus generating a variety of isothermal amplification techniques including Nucleic Acid Sequence-Based Amplification (NASBA) along with Self-Sustained Sequence Replication (3SR) and Strand Displacement Amplification (SDA) and Loop mediated isothermal amplification (LAMP) test. LAMP stands out to be a good and effective diagnostic test for empowering in developing countries as it does not require sophisticated equipments and skilled personnel and proves to be cost-effective. Performance of LAMP mainly relies on crafting of six primers (including 2 loop primers) ultimately accelerating the reaction. LAMP amplifies DNA in the process pyrophosphates are formed causing turbidity that facilitates visualisation in a more effective way than PCR. The Bst and Bsm polymerase are the required enzymes for LAMP that does not possess 5'-3' exonuclease activity. Results can be visualized by adding DNA binding dye, SYBR green. LAMP is more stable than PCR and real-time PCR. Non-involvement of template DNA preparation and ability to generate 10(9) copies of DNA are added benefits that make it more effective than NASBA or 3SR and SDA. Thus, it fetches researcher's interest in developing various versions of LAMP viz., its combination with lateral flow assay or micro LAMP and more recently lyophilized and electric (e) LAMP. Availability of ready to use LAMP kits has helped diagnosis of almost all pathogens. LAMP associated technologies however needs to be developed as a part of LAMP platform rather than developing them as separate entities. This review deals with all these salient features of this newly developed tool that has enlightened the world of diagnosis.
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Niessen L, Luo J, Denschlag C, Vogel RF. The application of loop-mediated isothermal amplification (LAMP) in food testing for bacterial pathogens and fungal contaminants. Food Microbiol 2013; 36:191-206. [DOI: 10.1016/j.fm.2013.04.017] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Revised: 04/23/2013] [Accepted: 04/25/2013] [Indexed: 10/26/2022]
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Tang T, Cheng A, Wang M, Li X, He Q, Jia R, Zhu D, Chen X. Development and clinical verification of a loop-mediated isothermal amplification method for detection of Salmonella species in suspect infected ducks. Poult Sci 2012; 91:979-86. [DOI: 10.3382/ps.2011-01992] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Techathuvanan C, D'Souza DH. Reverse-Transcriptase Loop-Mediated Isothermal Amplification as a Rapid Screening/Monitoring Tool for Salmonella Enterica Detection in Liquid Whole Eggs. J Food Sci 2012; 77:M200-5. [DOI: 10.1111/j.1750-3841.2011.02601.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Liu YB, Zhang L, Xue QH, Ning YB, Zhang ZG. Development of a loop-mediated isothermal amplification assay for porcine circovirus type 2. Virol Sin 2011; 26:214-20. [PMID: 21667342 DOI: 10.1007/s12250-011-3169-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2010] [Accepted: 03/01/2011] [Indexed: 11/28/2022] Open
Abstract
In this study, the loop-mediated isothermal amplification (LAMP) method was used to develop a rapid and simple detection system for porcine circovirus type 2 (PCV2). According to the PCV2 sequences published in GenBank, multiple LAMP primers were designed targeting conserved sequences of PCV2. Using the DNA extracted from PCV2 isolates HUN-09 and SD-09 as the template, LAMP reactions in a PCV2 LAMP system was performed, the amplification products were detected by adding SYBR Green I and could be observed directly by the naked eye. The results showed highly-efficient and specific amplification in 30 min at 63°C with a LAMP real-time turbidimeter. Furthermore, PCV2 DNA templates, with a detection limit of 5.5×10(-5) ng of nucleic acid, indicated that this assay was highly sensitive. The results obtained with the naked eye after SYBR Green I staining were consistent with those detected by the real-time turbidimeter, showing the potential simplicity of interpretation of the assay results. The LAMP assay appeared to have greater accuracy than PCR and virus isolation for the analysis of 18 clinical samples. In addition it offers higher specificity and sensitivity, shorter reaction times and simpler procedures than the currently available methods of PCV2 detection. It is therefore a promising tool for the effective and efficient detection of PCV2.
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Affiliation(s)
- Ye-Bing Liu
- China Institute of Veterinary Drug Control, Beijing, China.
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Techathuvanan C, Draughon FA, D'Souza DH. Loop-Mediated Isothermal Amplification (LAMP) for the Rapid and Sensitive Detection ofSalmonella Typhimurium from Pork. J Food Sci 2010; 75:M165-72. [DOI: 10.1111/j.1750-3841.2010.01554.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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21
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James HE, Ebert K, McGonigle R, Reid SM, Boonham N, Tomlinson JA, Hutchings GH, Denyer M, Oura CAL, Dukes JP, King DP. Detection of African swine fever virus by loop-mediated isothermal amplification. J Virol Methods 2009; 164:68-74. [PMID: 19963011 DOI: 10.1016/j.jviromet.2009.11.034] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2009] [Revised: 11/25/2009] [Accepted: 11/30/2009] [Indexed: 11/28/2022]
Abstract
A loop-mediated isothermal amplification (LAMP) assay was developed for the detection of African swine fever virus (ASFV). This assay targets the topoisomerase II gene of ASFV and its specificity was confirmed by restriction enzyme digestion of the reaction products. The analytical sensitivity of this ASFV LAMP assay was at least 330 genome copies, and the test was able to detect representative isolates of ASFV (n=38) without cross-reacting with classical swine fever virus. The performance of the LAMP assay was compared with other laboratory tests used for ASF diagnosis. Using blood and tissue samples collected from pigs experimentally infected with ASFV (Malawi isolate), there was good concordance between the LAMP assay and real-time PCR. In addition to detecting the reaction products using either agarose gels or real-time PCR machines, it was possible to visualise dual-labelled biotin and fluorescein ASFV LAMP amplicons using novel lateral flow devices. This assay and detection format represents the first step towards developing a practical, simple-to-use and inexpensive molecular assay format for ASF diagnosis in the field which is especially relevant to Africa where the disease is endemic in many countries.
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Affiliation(s)
- Heather E James
- Institute for Animal Health, Ash Road, Pirbright, Surrey GU24 0NF, United Kingdom
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