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Srisawat W, Saengthongpinit C, Nuchchanart W. Development of loop-mediated isothermal amplification-lateral flow dipstick as a rapid screening test for detecting Listeria monocytogenes in frozen food products using a specific region on the ferrous iron transport protein B gene. Vet World 2022; 15:590-601. [PMID: 35497940 PMCID: PMC9047130 DOI: 10.14202/vetworld.2022.590-601] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 01/24/2022] [Indexed: 11/16/2022] Open
Abstract
Background and Aim: Listeria monocytogenes is a critical foodborne pathogen that infects pregnant females and their newborns and older adults and individuals with comorbidities. It contaminates fresh vegetables, fruits, ready-to-eat foods, and frozen food products consumed by individuals. The culture conventional detection methods for L. monocytogenes are time-consuming, taking 4 days. This study aimed to describe the development and comparison of loop-mediated isothermal amplification (LAMP)- lateral flow dipstick (LFD), LAMP assay to PCR, and conventional culture for detecting L. monocytogenes in frozen food products.
Materials and Methods: Five LAMP primer sets, including F3, B3, forward inner primer, and backward inner primer, were designed from a specific region on ferrous iron transport protein B gene (feoB gene) to amplify LAMP products. The DNA probe was created, and the detection limit was determined in pure culture and purified DNA, as well as the detection in 20 frozen food product samples.
Results: The LMfeoB4 LAMP primer sets and DNA probe were LAMP products amplified at 60°C for 50 min. The specificity of the assay revealed no cross-reactivity with other pathogenic bacteria. The limit of detection (LOD) of the LAMP-LFD and LAMP assays using purified genomic DNA was 219 fg/μL both in LAMP and LAMP-LFD assays. The LOD of LAMP and LAMP-LFD assays in pure culture was 4.3×102 colony-forming unit (CFU)/mL and 43 CFU/mL, respectively. The LOD of the LAMP-LFD assay using artificially inoculated chicken in frozen food samples with pre-enrichment was 3.2×102 CFU/mL. The LAMP-LFD was also more sensitive than the LAMP assay and polymerase chain reaction. Finally, LAMP-LFD revealed no false positives in any of the 20 frozen food product samples.
Conclusion: LAMP-LFD assay using a specific region on the feoB gene to detect L. monocytogenes was highly specific, sensitive, faster, and convenient, making it a valuable tool for the monitoring and rapid screening of L. monocytogenes in frozen food products. This technique is applicable to the development of detection technologies for other pathogens in food products.
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Affiliation(s)
- Wimvipa Srisawat
- Department of Animal Science, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University, Nakhon Pathom 73140, Thailand
| | - Chalermkiat Saengthongpinit
- Department of Veterinary Public Health, Faculty of Veterinary Medicine, Kasetsart University, Nakhon Pathom 73140, Thailand
| | - Wirawan Nuchchanart
- Department of Animal Science, Faculty of Agriculture at Kamphaeng Saen, Kasetsart University, Nakhon Pathom 73140, Thailand; Center for Agricultural Biotechnology, Kasetsart University, Kamphaeng Saen Campus, Nakhon Pathom 73140, Thailand; Center of Excellence on Agricultural Biotechnology, Bangkok 10900, Thailand
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Izawa K, Kubosaki A, Kobayashi N, Akiyama Y, Yamazaki A, Hashimoto K, Konuma R, Kamata Y, Hara-Kudo Y, Hasegawa K, Ikaga T, Watanabe M. Comprehensive Fungal Community Analysis of House Dust Using Next-Generation Sequencing. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17165842. [PMID: 32806670 PMCID: PMC7460106 DOI: 10.3390/ijerph17165842] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 07/21/2020] [Accepted: 08/07/2020] [Indexed: 12/04/2022]
Abstract
Fungal community analyses in homes have been attracting attention because fungi are now generally considered to be allergens. Currently, these analyses are generally conducted using the culture method, although fungal communities in households often contain species that are difficult to culture. In contrast, next-generation sequencing (NGS) represents a comprehensive, labor- and time-saving approach that can facilitate species identification. However, the reliability of the NGS method has not been compared to that of the culture method. In this study, in an attempt to demonstrate the reliability of this application, we used the NGS method to target the internal transcribed spacer 1 (ITS1) in the fungal genome, conducted fungal community analyses for 18 house-dust samples and analyzed fungal community structures. The NGS method positively correlated with the culture method regarding the relative abundance of Aspergillus, Penicillium, Cladosporium and yeasts, which represent the major fungal components found in houses. Furthermore, several genera, such as Malassezia, could be sensitively detected. Our results imply that the reliability of the NGS method is comparable to that of the culture method and indicates that easily available databases may require modifications, including the removal of registrations that have not been sufficiently classified at the genus level.
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Affiliation(s)
- Kazuki Izawa
- Department of Computer Science, School of Computing, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan; (K.I.); (Y.A.)
| | - Atsutaka Kubosaki
- Division of Microbiology, National Institute of Health Sciences, Kawasaki-ku, Kawasaki, Kanagawa 210-9501, Japan; (A.K.); (Y.H.-K.)
| | - Naoki Kobayashi
- Department of Food and Life Science, School of Life and Environmental Science, Azabu University, Chuo-ku, Sagamihara, Kanagawa 252-5201, Japan;
| | - Yutaka Akiyama
- Department of Computer Science, School of Computing, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8550, Japan; (K.I.); (Y.A.)
| | - Akiko Yamazaki
- Department of Veterinary Medicine, Faculty of Agriculture, Iwate University, Morioka, Iwate 020-8550, Japan;
| | - Kazuhiro Hashimoto
- Laboratory of Integrated Pest Management, FCG Research Institute, Inc., Koto-ku, Tokyo 135-0064, Japan;
| | - Rumi Konuma
- Tokyo Metropolitan Industrial Technology Research Institute, Koto-ku, Tokyo 135-0064, Japan;
| | - Yoichi Kamata
- Department of Food Design, Faculty of Nutritional Science, Koshien University, Takarazuka, Hyogo 665-0006, Japan;
- Department of Food and Nutrition, Faculty of Human Life Science, Senri Kinran University, Suita, Osaka 565-0873, Japan
| | - Yukiko Hara-Kudo
- Division of Microbiology, National Institute of Health Sciences, Kawasaki-ku, Kawasaki, Kanagawa 210-9501, Japan; (A.K.); (Y.H.-K.)
| | - Kenichi Hasegawa
- Department of Architecture and Environment Systems, Faculty of Systems Science and Technology, Akita Prefectural University, Yurihonjo, Akita 015-0055, Japan;
| | - Toshiharu Ikaga
- Department of System Design Engineering, Faculty of Science and Technology, Keio University, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan;
| | - Maiko Watanabe
- Division of Microbiology, National Institute of Health Sciences, Kawasaki-ku, Kawasaki, Kanagawa 210-9501, Japan; (A.K.); (Y.H.-K.)
- Correspondence: ; Tel.: +81-44-270-6573
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Yang Q, Xu H, Zhang Y, Liu Y, Lu X, Feng X, Tan J, Zhang S, Zhang W. Single primer isothermal amplification coupled with SYBR Green II: Real-time and rapid visual method for detection of Listeria monocytogenes in raw chicken. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.109453] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Ledlod S, Bunroddith K, Areekit S, Santiwatanakul S, Chansiri K. Development of a duplex lateral flow dipstick test for the detection and differentiation of Listeria spp. and Listeria monocytogenes in meat products based on loop-mediated isothermal amplification. J Chromatogr B Analyt Technol Biomed Life Sci 2019; 1139:121834. [PMID: 31812649 DOI: 10.1016/j.jchromb.2019.121834] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 10/13/2019] [Accepted: 10/16/2019] [Indexed: 12/31/2022]
Abstract
Listeria spp. are a group of gram-positive bacteria consisting of 20 species. Among them, Listeria monocytogenes is one of the major species that infects humans since it contaminates raw fruits, vegetables, and many others food products. The conventional methods for the detection of Listeria spp. and L. monocytogenes are time-consuming, taking 5-7 days. Herein, a duplex lateral flow dipstick (DLFD) test combined with loop-mediated isothermal amplification (LAMP) was developed for the identification of Listeria spp. and L. monocytogenes within approximately 45 min with the optimized LAMP reaction times at 63 °C. Under the optimized conditions, the method detection limits (MDL) with reference to genomic DNA and pure culture were 900 femtograms (fg) and 20 cfu/mL, respectively. The LAMP-DLFD showed no cross-reactivity with eighteen - other pathogenic bacteria such as Salmonella spp., Staphylococcus aureus, Escherichia coli, Campylobacter coli, C. jejuni, Enterococcus faecalis, Vibrio cholerae, V. parahaemolyticus, Pseudomonas aeruginosa, Shigella dysenteriae, S. flexneri, Bacillus cereus, Lactobacillus acidophilus, L. casei and Pediococcus pentosaceus. Among 100 samples of food products, LAMP-DLFD demonstrated 100% accuracy when compared to other standard detection methods, such as ISO11290-1, enzyme-linked fluorescent assay (ELFA) technology (VIDAS) and PCR. In conclusion, LAMP-DLFD proved to be highly specific and sensitive assays for screening detection of Listeria spp. and L. monocytogenes.
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Affiliation(s)
- Sudarat Ledlod
- Department of Biochemistry, Faculty of Medicine, Srinakharinwirot University, Sukhumvit 23, Bangkok 10110, Thailand; CPF Laboratory, CPF Food and Beverage Co., LTD., 30/3 M 3, Suwintawong Rd, Lumpackchee, Nongjok, Bangkok 10530, Thailand; CPF Research and Development Center Co., LTD., 359 M.4, T. Lamsai, Amphoe Wang Noi, Phranakhon Sri Ayutthaya 13170, Thailand
| | - Kespunyavee Bunroddith
- Center of Excellence in Biosensors, Srinakharinwirot University, 222 M.1, Panyananthaphikkhu Chonprathan Medical Center, Tiwanon Road, Bang-talat, Pak Kret, Nonthaburi 11120, Thailand
| | - Supatra Areekit
- Innovative Learning Center, Srinakharinwirot University, Sukhumvit 23, Bangkok 10110, Thailand; Center of Excellence in Biosensors, Srinakharinwirot University, 222 M.1, Panyananthaphikkhu Chonprathan Medical Center, Tiwanon Road, Bang-talat, Pak Kret, Nonthaburi 11120, Thailand
| | - Somchai Santiwatanakul
- Department of Pathology, Faculty of Medicine, Srinakharinwirot University, Sukhumvit 23, Bangkok 10110, Thailand; Center of Excellence in Biosensors, Srinakharinwirot University, 222 M.1, Panyananthaphikkhu Chonprathan Medical Center, Tiwanon Road, Bang-talat, Pak Kret, Nonthaburi 11120, Thailand
| | - Kosum Chansiri
- Department of Biochemistry, Faculty of Medicine, Srinakharinwirot University, Sukhumvit 23, Bangkok 10110, Thailand; Center of Excellence in Biosensors, Srinakharinwirot University, 222 M.1, Panyananthaphikkhu Chonprathan Medical Center, Tiwanon Road, Bang-talat, Pak Kret, Nonthaburi 11120, Thailand.
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Chen JQ, Healey S, Regan P, Laksanalamai P, Hu Z. PCR-based methodologies for detection and characterization of Listeria monocytogenes and Listeria ivanovii in foods and environmental sources. FOOD SCIENCE AND HUMAN WELLNESS 2017. [DOI: 10.1016/j.fshw.2017.03.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Kouchakkhani H, Dehghan P, Moosavy MH, Sarmadi B. Occurrence, Molecular Detection and Antibiotic Resistance Profile of Escherichia coli O157:H7 Isolated from Ready-to-Eat Vegetable Salads in Iran. PHARMACEUTICAL SCIENCES 2016. [DOI: 10.15171/ps.2016.31] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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