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Yamamoto J, Nakamoto K, Shimasaki T, Kurai D, Saraya T, Ishii H. Listeria monocytogenes bacteremia developed during treatment of COVID-19. Clin Case Rep 2023; 11:e8115. [PMID: 37908788 PMCID: PMC10613716 DOI: 10.1002/ccr3.8115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 10/06/2023] [Accepted: 10/10/2023] [Indexed: 11/02/2023] Open
Abstract
Listeria monocytogenes is an important pathogen in older patients and immunosuppressed patients, often causing bacteremia. Complications resulting from infections other than COVID-19 must also be considered during COVID-19 treatment.
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Affiliation(s)
- Jin Yamamoto
- Department of Nephrology and RheumatologyKyorin University School of MedicineMitakaTokyoJapan
| | - Keitaro Nakamoto
- Department of Respiratory MedicineKyorin University School of MedicineMitakaTokyoJapan
| | - Teppei Shimasaki
- Department of General MedicineKyorin University School of MedicineMitakaTokyoJapan
| | - Daisuke Kurai
- Department of General MedicineKyorin University School of MedicineMitakaTokyoJapan
| | - Takeshi Saraya
- Department of Respiratory MedicineKyorin University School of MedicineMitakaTokyoJapan
| | - Haruyuki Ishii
- Department of Respiratory MedicineKyorin University School of MedicineMitakaTokyoJapan
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2
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Shimojima Y, Shimojima H, Morita Y. Survival of Campylobacter jejuni, Salmonella, and Listeria monocytogenes and Temperature Change in Low-Temperature-Longtime-Cooked Chicken Meat. J Food Prot 2022; 85:1166-1171. [PMID: 35687739 DOI: 10.4315/jfp-22-114] [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: 04/11/2022] [Accepted: 05/30/2022] [Indexed: 11/11/2022]
Abstract
ABSTRACT Low-temperature and longtime (LT-LT) cooking, also known as sous vide cooking, is the process in which meat is sealed in a bag and cooked in hot water at a relatively low temperature of around 60°C. This cooking method has increased in popularity, and low-temperature cookers for home use are now commercially available. However, after LT-LT cooking, if any foodborne bacteria remain, they could cause infection and foodborne illnesses. Therefore, in the present study, the aim was to determine the appropriate LT-LT cooking methods for chicken by assessing temperature changes and studying the bacteria in LT-LT-cooked chicken meat. At set cooking temperatures of 60 and 65°C, the temperatures were measured at the surface and in the centers of single- and double-layer samples of 300 g of chicken breast meat. The times required to reach 50°C were 5 to 14 min at the surface, 25 min in the center of the single-layer sample, and 33 to 35 min in the center of the double-layer sample. The time taken to reach 50°C was fastest in the surface of single-layer chicken meat, followed by the center of single-layer and double-layer chicken meat (P < 0.05). When the meat was LT-LT cooked at 60 and 65°C for 60 min, color changes in the meat and heating of the meat were observed all the way to the interior. Campylobacter jejuni, Salmonella O7, and Listeria monocytogenes were inoculated into chicken breasts, which were then cooked at set temperatures of 60 and 65°C for 15, 30, 60, 90, and 120 min. C. jejuni survived for up to 30 min of cooking, Salmonella O7 survived for up to 60 min of cooking at 60°C and 30 min at 65°C, and L. monocytogenes survived for up to 90 min of cooking at 60°C and 60 min at 65°C. Thus, to prevent infection and illness caused by the three tested bacteria species, LT-LT cooking for 120 min at 60°C and 90 min at 65°C is recommended. HIGHLIGHTS
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Affiliation(s)
- Yukako Shimojima
- Department of Nutritional Management, Sagami Women's University, 2-1-1 Bunkyo, Minami-ku, Sagamihara-shi, Kanagawa, 252-0383, Japan
| | - Hazuki Shimojima
- Toho University School of Medicine, 5-21-16 Omorinishi, Ota-ku, Tokyo, 143-8540, Japan
| | - Yukio Morita
- School of Veterinary Medicine, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara, Kanagawa, 252-5201, Japan
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3
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Long filamentous state of Listeria monocytogenes induced by sublethal sodium chloride stress poses risk of rapid increase in colony-forming units. Food Control 2021. [DOI: 10.1016/j.foodcont.2020.107860] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Noviyanti F, Hosotani Y, Inatsu Y, Kawasaki S. A comparison of Listeria monocytogenes growth monitoring in ground pork samples by real-time polymerase chain reaction to conventional agar and most probable number methods. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2021. [DOI: 10.3136/fstr.27.647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Fia Noviyanti
- National Food Research Institute, Food Hygiene Laboratory
| | - Yukie Hosotani
- National Food Research Institute, Food Hygiene Laboratory
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Kaptchouang Tchatchouang CD, Fri J, De Santi M, Brandi G, Schiavano GF, Amagliani G, Ateba CN. Listeriosis Outbreak in South Africa: A Comparative Analysis with Previously Reported Cases Worldwide. Microorganisms 2020; 8:E135. [PMID: 31963542 PMCID: PMC7023107 DOI: 10.3390/microorganisms8010135] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/26/2019] [Accepted: 12/27/2019] [Indexed: 01/01/2023] Open
Abstract
Listeria species are Gram-positive, rod-shaped, facultative anaerobic bacteria, which do not produce endospores. The genus, Listeria, currently comprises 17 characterised species of which only two (L. monocytogenes and L. ivanovii) are known to be pathogenic to humans. Food products and related processing environments are commonly contaminated with pathogenic species. Outbreaks and sporadic cases of human infections resulted in considerable economic loss. South Africa witnessed the world's largest listeriosis outbreak, characterised by a progressive increase in cases of the disease from January 2017 to July 2018. Of the 1060 laboratory-confirmed cases of listeriosis reported by the National Institute of Communicable Diseases (NICD), 216 deaths were recorded. Epidemiological investigations indicated that ready-to-eat processed meat products from a food production facility contaminated with L. monocytogenes was responsible for the outbreak. Multilocus sequence typing (MLST) revealed that a large proportion (91%) of the isolates from patients were sequence type 6 (ST6). Recent studies revealed a recurrent occurrence of small outbreaks of listeriosis with more severe side-effects in humans. This review provides a comparative analysis of a recently reported and most severe outbreak of listeriosis in South Africa, with those previously encountered in other countries worldwide. The review focuses on the transmission of the pathogen, clinical symptoms of the disease and its pathogenicity. The review also focuses on the major outbreaks of listeriosis reported in different parts of the world, sources of contamination, morbidity, and mortality rates as well as cost implications. Based on data generated during the outbreak of the disease in South Africa, listeriosis was added to the South African list of mandatory notifiable medical conditions. Surveillance systems were strengthened in the South African food chain in order to assist in preventing and facilitating early detection of both sporadic cases and outbreaks of infections caused by these pathogens in humans.
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Affiliation(s)
| | - Justine Fri
- Department of Microbiology, North-West University, Mafikeng Campus, Private Bag X2046, Mmabatho 2735, South Africa; (C.-D.K.T.); (J.F.)
| | - Mauro De Santi
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, via S. Chiara 27, 61029 Urbino (PU), Italy; (M.D.S.); (G.B.); (G.A.)
- Department of Humanities, University of Urbino Carlo Bo, via Bramante 17, 61029 Urbino (PU), Italy;
| | - Giorgio Brandi
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, via S. Chiara 27, 61029 Urbino (PU), Italy; (M.D.S.); (G.B.); (G.A.)
- Department of Humanities, University of Urbino Carlo Bo, via Bramante 17, 61029 Urbino (PU), Italy;
| | | | - Giulia Amagliani
- Department of Biomolecular Sciences, University of Urbino Carlo Bo, via S. Chiara 27, 61029 Urbino (PU), Italy; (M.D.S.); (G.B.); (G.A.)
| | - Collins Njie Ateba
- Department of Microbiology, North-West University, Mafikeng Campus, Private Bag X2046, Mmabatho 2735, South Africa; (C.-D.K.T.); (J.F.)
- Food Security and Safety Niche Area, Faculty of Natural and Agricultural Sciences, North-West University, Mafikeng Campus, Mmabatho, Mafikeng 2735, South Africa
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Maung AT, Mohammadi TN, Nakashima S, Liu P, Masuda Y, Honjoh KI, Miyamoto T. Antimicrobial resistance profiles of Listeria monocytogenes isolated from chicken meat in Fukuoka, Japan. Int J Food Microbiol 2019; 304:49-57. [PMID: 31154111 DOI: 10.1016/j.ijfoodmicro.2019.05.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2018] [Revised: 05/10/2019] [Accepted: 05/20/2019] [Indexed: 12/17/2022]
Abstract
In this study, the antimicrobial resistance profiles of L. monocytogenes isolated from chicken meat in Fukuoka in 2017 were compared with the isolates of 2012. A total of 85 and 50 chicken meat samples, including different body parts, were collected from different supermarkets in Fukuoka in 2012 and 2017, respectively. Detection, isolation, identification, and characterization of L. monocytogenes were performed according to the conventional methods. Forty-five among 85 samples (53%) were positive for L. monocytogenes in 2012, while 12 among 50 samples in 2017 (24%) tested positive. One hundred fifty-three and 29 L. monocytogenes strains were isolated in 2012 and 2017, respectively. The serotypes of isolates in 2012 were 1/2a (21.5%), 1/2b (73.9%), 1/2c (1.5%), and 4b/4e (3.1%). In contrast, the 2017 isolates showed 1/2a (48.3%) and 1/2b (51.7%) serotypes. While all isolates in 2012 were positive for hlyA (listeriolysin O) in the PCR assay with hlyA primer set 7, only 17 hlyA positive isolates were seen in 2017. Moreover, 75 isolates with different ribotypes in 2012 and 29 isolates in 2017, respectively, were tested for antimicrobial susceptibility by broth microdilution for 18 different antimicrobial agents. Most of the 2012 and 2017 isolates displayed antimicrobial susceptibility. However, among the 2012 and 2017 isolates, 98.7% and 100% of the isolates were resistant to cefoxitin, 57.3% and 95.7% to fosfomycin, 72.0% and 82.6% to oxacillin, 8.0% and 17.4% to clindamycin, respectively. In addition, 2.7% of the isolates in 2012 were resistant to flomoxef and 4.3% of the isolates in 2017 to linezolid. Multidrug resistance (MDR) to 3 or more antimicrobials was observed in 35/75 (46.7%) isolates of 2012 and 19/23 (82.6%) in 2017. Detection of antimicrobial resistance (AMR) genes by PCR showed that the resistant isolates of 2012 were positive for mecA (96.3%) and ermC (83.3%), whereas the resistant isolates in 2017 screened positive for mecA (94.7%) and mefA (25.0%). Other cfxA, ermA, ermB, fosA, fosB, and fosC genes were absent in the PCR assay for any of the isolates. This study investigated for the first time the change in the L. monocytogenes contamination of chicken meat and antibiotic resistance of the isolated L. monocytogenes strains in Fukuoka, Japan, in the course of 5 years. Although the contamination rate of L. monocytogenes in 2017 was found to be lower than that in 2012, AMR of the isolates in 2017 was higher.
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Affiliation(s)
- Aye Thida Maung
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan; Department of Animal Science, University of Veterinary Science, Yezin, Nay Pyi Taw, Myanmar
| | - Tahir Noor Mohammadi
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Satoko Nakashima
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Pei Liu
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Yoshimitsu Masuda
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Ken-Ichi Honjoh
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Takahisa Miyamoto
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan.
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7
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Chin PS, Ang GY, Yu CY, Tan EL, Tee KK, Yin WF, Chan KG, Tan GYA. Prevalence, Antimicrobial Resistance, and Genetic Diversity of Listeria spp. Isolated from Raw Chicken Meat and Chicken-Related Products in Malaysia. J Food Prot 2018; 81:284-289. [PMID: 29360399 DOI: 10.4315/0362-028x.jfp-17-186] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Listeria spp. are ubiquitous in nature and can be found in various environmental niches such as soil, sewage, river water, plants, and foods, but the most frequently isolated species are Listeria monocytogenes and Listeria innocua. In this study, the presence of Listeria spp. in raw chicken meat and chicken-related products sold in local markets in Klang Valley, Malaysia was investigated. A total of 44 Listeria strains (42 L. innocua and 2 L. welshimeri) were isolated from 106 samples. Antibiotic susceptibility tests of the L. innocua strains revealed a high prevalence of resistance to clindamycin (92.9%), ceftriaxone (76.2%), ampicillin (73.8%), tetracycline (69%), and penicillin G (66.7%). Overall, 31 L. innocua and 1 L. welshimeri strain were multidrug resistant, i.e., nonsusceptible to at least one antimicrobial agent in three or more antibiotic classes. The majority of the L. innocua strains were placed into five AscI pulsogroups, and overall 26 distinct AscI pulsotypes were identified. The detection of multidrug-resistant Listeria strains from different food sources and locations warrants attention because these strains could serve as reservoirs for antimicrobial resistance genes and may facilitate the spread and emergence of other drug-resistant strains.
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Affiliation(s)
- Pui San Chin
- 1 Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Geik Yong Ang
- 2 Integrative Pharmacogenomics Institute (iPROMISE), Universiti Teknologi MARA, Puncak Alam Campus, 42300 Bandar Puncak Alam, Selangor, Malaysia.,3 Faculty of Sports Science & Recreation, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
| | - Choo Yee Yu
- 2 Integrative Pharmacogenomics Institute (iPROMISE), Universiti Teknologi MARA, Puncak Alam Campus, 42300 Bandar Puncak Alam, Selangor, Malaysia
| | - Eng Lee Tan
- 1 Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Kok Keng Tee
- 4 Department of Medical Microbiology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Wai Fong Yin
- 1 Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Kok Gan Chan
- 1 Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia.,5 Vice Chancellor Office, Jiangsu University, Zhenjiang 212013, People's Republic of China (ORCID: http://orcid.org/0000-0002-1883-1115 )
| | - Geok Yuan Annie Tan
- 1 Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
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Yamaki S, Hamada N, Kawai Y, Yamazaki K. Suppression of Initial Adhesion and Biofilm Formation of Listeria monocytogenes by Nisin and Sucrose Fatty Acid Ester. J JPN SOC FOOD SCI 2017. [DOI: 10.3136/nskkk.64.493] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Shogo Yamaki
- Faculty of Fisheries Sciences, Hokkaido University
| | - Naho Hamada
- Graduate School of Fisheries Sciences, Hokkaido University
| | - Yuji Kawai
- Faculty of Fisheries Sciences, Hokkaido University
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Antilisterial Bacteriocin-producing Strain of Lactobacillus curvatus CWBI-B28 as a Preservative Culture in Bacon Meat and Influence of Fat and Nitrites on Bacteriocins Production and Activity. FOOD SCI TECHNOL INT 2016. [DOI: 10.1177/1082013206067380] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The objectives of this study were to evaluate the effectiveness of a bacteriocin-producing Lactobacillus curvatus CWBI-B28 to inhibit the growth of Listeria monocytogenes in de Man, Rogosa and Sharp (MRS) broth and in bacon meat. A co-culture of L. monocytogenes with the Bac strain in MRS broth, resulted in a reduction of the pathogen counts by 4.2 log cycles after 24h of incubation at 37°C. In bacon, the counts of L. monocytogenes was reduced to below the detectable limit (<10cfu/g) in samples inoculated with the Bac strain within 1 or 2 weeks in absence or presence of nitrites (210mg/kg), respectively. However, a week later, a re-growth of the pathogen has occurred. In contrast, no such reduction in Listeria cfus was observed in samples treated with the Bac derivative of Lb. curvatusCWBI-B28. Nonetheless, the extent of inhibitory effect of the Bac strain against L. monocytogenes in bacon was somewhat reduced in the presence of nitrites. A separate study on the influence of nitrites and fats on growth and bacteriocin production by Lb. curvatus CWBI-B28 revealed that the curing agent affects the growth of the Bac strain and, thereby bacteriocin production and activity only at concentrations (>5%) far beyond those allowed in the meat industry. Fat content did not affect the bacterial growth even at the highest concentration used (i.e. 50%), however, it interfered significantly with the detection of AUs and the antilisterial activity. Use of the Bac Lb. curvatus CWBI-B28 has proven efficient in controlling L. monocytogenes in bacon despite the slight antagonistic effect of nitrites, however the efficacy was dramatically reduced upon extended period of storage at 4°C.
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Kanki M, Naruse H, Taguchi M, Kumeda Y. Characterization of specific alleles in InlA and PrfA of Listeria monocytogenes isolated from foods in Osaka, Japan and their ability to invade Caco-2 cells. Int J Food Microbiol 2015; 211:18-22. [PMID: 26143289 DOI: 10.1016/j.ijfoodmicro.2015.06.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 06/23/2015] [Accepted: 06/26/2015] [Indexed: 10/23/2022]
Abstract
Listeria monocytogenes expresses the surface protein internalin A (InlA), enabling the invasion of human intestinal epithelial cells to cause severe food-borne diseases. Full-length sequence analysis of inlA of 114 food isolates resulted in the detection of 29 isolates with a premature stop codon (PMSC) mutation and 6 isolates with 3-codon deletion mutations (aa 738 to 740) in inlA. The isolates with inlA PMSCs demonstrated a significantly lower level of invasion than the other food isolates in a Caco-2 cell invasion assay (P<0.01), but the isolates with the 3-codon deletion exhibited invasion comparable to the isolates with non-truncated InlA (P>0.05). According to analysis of the positive regulatory factor A (PrfA) sequences of 114 L. monocytogenes isolates, 7 isolates of serotype 1/2a from chicken samples contained a PrfA protein with a 5-nucleotide deletion from 712 to 716, including a stop codon. Although the isolates with a 5-nucleotide deletion in prfA demonstrated invasion comparable to the isolates with non-truncated InlA and PrfA after growth at 30 °C (P>0.05), they exhibited a significantly higher level of invasion than the other isolates after growth at 20 °C (P<0.01). To the authors' knowledge, this is the first report of L. monocytogenes isolates with the stop-codon deletion of PrfA.
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Affiliation(s)
- Masashi Kanki
- Department of Infectious Diseases, Osaka Prefectural Institute of Public Health, 1-3-69 Nakamichi, Higashinari-ku, Osaka 537-0025, Japan.
| | - Hisayo Naruse
- Department of Infectious Diseases, Osaka Prefectural Institute of Public Health, 1-3-69 Nakamichi, Higashinari-ku, Osaka 537-0025, Japan
| | - Masumi Taguchi
- Department of Infectious Diseases, Osaka Prefectural Institute of Public Health, 1-3-69 Nakamichi, Higashinari-ku, Osaka 537-0025, Japan
| | - Yuko Kumeda
- Department of Infectious Diseases, Osaka Prefectural Institute of Public Health, 1-3-69 Nakamichi, Higashinari-ku, Osaka 537-0025, Japan
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Yamaki S, Shirahama S, Kobayashi T, Kawai Y, Yamazaki K. Combined Effect of Nisin and Commercial Pectin-hydrolysate Treatment on Survival and growth of <i>Listeria monocytogenes</i> in Soy-seasoned Salmon Roe Products. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2015. [DOI: 10.3136/fstr.21.751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Shogo Yamaki
- Laboratory of Marine Food Science and Technology, Faculty of Fisheries Sciences, Hokkaido University
| | - Shinya Shirahama
- Laboratory of Marine Food Science and Technology, Faculty of Fisheries Sciences, Hokkaido University
| | - Tetsuya Kobayashi
- Laboratory of Marine Food Science and Technology, Faculty of Fisheries Sciences, Hokkaido University
| | - Yuji Kawai
- Laboratory of Marine Food Science and Technology, Faculty of Fisheries Sciences, Hokkaido University
| | - Koji Yamazaki
- Laboratory of Marine Food Science and Technology, Faculty of Fisheries Sciences, Hokkaido University
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Kyoui D, Takahashi H, Miya S, Kuda T, Igimi S, Kimura B. Genetic distance in the whole-genome perspective on Listeria monocytogenes strains F2-382 and NIHS-28 that show similar subtyping results. BMC Microbiol 2014; 14:309. [PMID: 25492229 PMCID: PMC4269915 DOI: 10.1186/s12866-014-0309-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2014] [Accepted: 11/24/2014] [Indexed: 11/17/2022] Open
Abstract
Background Genome subtyping approaches could provide useful epidemiological information regarding food pathogens. However, the full genomic diversity of strains that show similar subtyping results has not yet been completely explored. Most subtyping methods are based on the differences of only a portion of the genome. We investigated two draft genome sequences of Listeria monocytogenes strain F2-382 and NIHS-28, which have been identified as closely related strains by subtyping (identical multi-virulence-locus sequence typing and multiple-locus variable number tandem repeat analysis sequence types and very similar pulsed-field gel electrophoresis patterns), despite their different sources. Results Two closely related strains were compared by genome structure analysis, recombination analysis, and single nucleotide polymorphism (SNP) analysis. Both genome structure analysis and recombination analysis showed that these two strains are more closely related than other strains, from a whole-genome perspective. However, the analysis of SNPs indicated that the two strains differ at the single nucleotide level. Conclusion We show the relationship between the results of genome subtyping and whole-genome sequencing. It appears that the relationships among strains indicated by genome subtyping methods are in accord with the relationships indicated by whole-genome analysis. However, our results also indicate that the genetic distance between the closely related strains is greater than that between clonal strains. Our results demonstrate that subtyping methods using a part of the genome are reliable in assessing the genetic distance of the strains. Furthermore, the genetic differences in the same subtype strains may provide useful information to distinguish the bacterial strains. Electronic supplementary material The online version of this article (doi:10.1186/s12866-014-0309-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Daisuke Kyoui
- Department of Food Science and Technology, Faculty of Marine Science, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato, Tokyo, 108-8477, Japan.
| | - Hajime Takahashi
- Department of Food Science and Technology, Faculty of Marine Science, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato, Tokyo, 108-8477, Japan.
| | - Satoko Miya
- Department of Food Science and Technology, Faculty of Marine Science, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato, Tokyo, 108-8477, Japan.
| | - Takashi Kuda
- Department of Food Science and Technology, Faculty of Marine Science, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato, Tokyo, 108-8477, Japan.
| | - Shizunobu Igimi
- Division of Biomedical Food Research, National Institute of Health Science, 1-18-1 Kamiyoga, Setagaya-ku, Tokyo, 158-8501, Japan.
| | - Bon Kimura
- Department of Food Science and Technology, Faculty of Marine Science, Tokyo University of Marine Science and Technology, 4-5-7 Konan, Minato, Tokyo, 108-8477, Japan.
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Migeemanathan S, Bhat R, Wan-Abdullah WN, Chye FY. Influence of temperature variations on growth, injury survival and inactivation of Listeria monocytogenesin goat milk samples at laboratory scale. INT J DAIRY TECHNOL 2014. [DOI: 10.1111/1471-0307.12140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Suguna Migeemanathan
- Food Technology Division; School of Industrial Technology; Universiti Sains Malaysia; 11800 Minden Penang Malaysia
| | - Rajeev Bhat
- Food Technology Division; School of Industrial Technology; Universiti Sains Malaysia; 11800 Minden Penang Malaysia
| | - Wan-Nadiah Wan-Abdullah
- Bioprocess Technology Division; School of Industrial Technology; Universiti Sains Malaysia; 11800 Minden Penang Malaysia
| | - Fook Yee Chye
- School of Food Science and Nutrition; Universiti Malaysia Sabah; UMS Road 88400 Kota Kinabalu Sabah Malaysia
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14
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Microbial assessment and prevalence of foodborne pathogens in natural cheeses in Japan. BIOMED RESEARCH INTERNATIONAL 2014; 2013:205801. [PMID: 24490148 PMCID: PMC3892745 DOI: 10.1155/2013/205801] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Accepted: 12/04/2013] [Indexed: 12/04/2022]
Abstract
The production and consumption of domestic natural cheese in Japan is increasing year by year. More than ninety percent of domestic natural cheese is produced in Hokkaido region of Japan, while information on its quality and safety related to foodborne pathogens is limited. To assess the microbiological safety of domestic natural cheese, a total of 126 natural cheese samples produced in Hokkaido were collected from December, 2012, to July, 2013. In addition to standard plate count (SPC) and coliform counts, the prevalence study of three pathogens (Listeria monocytogenes, pathogenic Escherichia coli, and Salmonella spp.) was performed on each sample. Real-time PCR and matrix-assisted laser desorption-ionization time-of-flight mass spectrometer methods were employed for identification of presumptive pathogens. Coliform was detected in 25 samples (19.8%) with a minimum of 25 cfu/g and a maximum of more than 3.0 × 106 cfu/g. Salmonella spp. and L. monocytogenes were not isolated from any of the samples. Only one sample (0.80%) showed positive PCR amplification for ipaH gene suggesting possible contamination of enteroinvasive E. coli or Shigella in this product. Overall results indicate that natural cheeses produced in Hokkaido region were satisfactory microbiological quality according to existing international standards.
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Ochiai Y, Mochizuki M, Yamada F, Takano T, Hondo R, Ueda F. Genetic Classification of Listeria monocytogenes Serotype 4b Strains, Including Epidemic Clones, Isolated from Retail Meat in the Tokyo Metropolitan Area. Jpn J Infect Dis 2014; 67:258-63. [DOI: 10.7883/yoken.67.258] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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16
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Ochiai Y, Yamada F, Mochizuki M, Takano T, Hondo R, Ueda F. Biofilm formation under different temperature conditions by a single genotype of persistent Listeria monocytogenes strains. J Food Prot 2014; 77:133-40. [PMID: 24406011 DOI: 10.4315/0362-028x.jfp-13-074] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Some Listeria monocytogenes strains, termed persistent strains, originate from the same processing plant and have the ability to survive and grow over extended periods of time at contamination sources. In order to evaluate biofilm formation by such persistent strains, we isolated the pathogen from chicken samples collected from the same retail shop in repeated visits over 6 months. Strains that were of serotype 1/2b and were assigned to the same genotype by multi-virulence-locus sequence typing analysis were isolated on repeated occasions from December 1997 to June 1998 and thus were defined as persistent strains. In the present study, biofilm formation by the persistent strains was evaluated using microplates at 30 and 37°C. The biofilm-forming capability was measured after cells attaching to the microplate well were stained with crystal violet. Comparison of biofilm formation at 30°C among the persistent strains showed that a significantly higher amount of the stain was obtained from the persistent strains isolated from December to March than from those isolated from April to June. However, no significant difference in biofilm formation at 30°C was observed between persistent and nonpersistent groups of L. monocytogenes strains. In contrast, biofilm formation at 37°C was consistent among the persistent strains, and they produced significantly more biofilm at 37°C than did the nonpersistent strains. The persistent strains were also found to change their biofilm-forming ability in a temperature-dependent manner, which may suggest that the persistent strains alter their biofilm formation in response to changing environmental factors.
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Affiliation(s)
- Yoshitsugu Ochiai
- Department of Veterinary Science, Nippon Veterinary and Life Sciences University, Tokyo 180-8602, Japan
| | - Fumiya Yamada
- Department of Veterinary Science, Nippon Veterinary and Life Sciences University, Tokyo 180-8602, Japan; Saitama Institute of Public Health, Saitama 338-0824, Japan
| | - Mariko Mochizuki
- Department of Veterinary Nursing and Technology, Nippon Veterinary and Life Sciences University, Tokyo 180-8602, Japan
| | - Takashi Takano
- Department of Veterinary Science, Nippon Veterinary and Life Sciences University, Tokyo 180-8602, Japan
| | - Ryo Hondo
- Department of Veterinary Science, Nippon Veterinary and Life Sciences University, Tokyo 180-8602, Japan
| | - Fukiko Ueda
- Department of Veterinary Science, Nippon Veterinary and Life Sciences University, Tokyo 180-8602, Japan
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Goto S, Watanabe I, Omori Y, Fuchu H, Miake K, Morioka Y, Kotani K, Kosai K, Kamisaki-Horikoshi N, Sameshima T, Inoguchi Y, Nakashima Y, Nishizaka K, Igimi S, Shinmura Y, Hattori A. Effects of Water Activity and Smoke Compounds on the Growth of Listeria monocytogenes in Raw Ham. J JPN SOC FOOD SCI 2014. [DOI: 10.3136/nskkk.61.9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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18
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19
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Okada Y, Ohnuki I, Suzuki H, Igimi S. Growth ofListeria monocytogenesin refrigerated ready-to-eat foods in Japan. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2013; 30:1446-9. [DOI: 10.1080/19440049.2012.762604] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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20
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Ning P, Guo K, Cheng L, Xu L, Zhang C, Cui H, Cheng Y, Xu R, Liu W, Lv Q, Cao W, Zhang Y. Pilot survey of raw whole milk in China for Listeria monocytogenes using PCR. Food Control 2013. [DOI: 10.1016/j.foodcont.2012.09.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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Hasegawa M, Iwabuchi E, Yamamoto S, Esaki H, Kobayashi K, Ito M, Hirai K. Prevalence and characteristics of Listeria monocytogenes in bovine colostrum in Japan. J Food Prot 2013; 76:248-55. [PMID: 23433372 DOI: 10.4315/0362-028x.jfp-12-278] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
This study was conducted to determine the prevalence and characteristics of Listeria monocytogenes in bovine colostrum in Japan. We collected bovine colostrum samples from 210 dams from 21 dairy farms in Hokkaido prefecture (Japan) between March and June 2009. L. monocytogenes was detected in samples from 6 (28.6%) of the 21 farms. Of the 210 samples, 16 (7.6%) were positive for L. monocytogenes. We recovered 80 L. monocytogenes isolates; 44 (55%) isolates were classified as serotype 1/2b and 36 (45%) were classified as serotype 4b. The isolates were susceptible to penicillin, ampicillin, amoxicillin, gentamicin, kanamycin, streptomycin, erythromycin, vancomycin, tetracycline, chloramphenicol, ciprofloxacin, and trimethoprim-sulfamethoxazole. Pulsed-field gel electrophoresis (PFGE) characterization of the 80 isolates revealed six PFGE types. Two PFGE types corresponded to human listeriosis cases. Most L. monocytogenes isolates possessed virulence-associated genes (actA, hly, iap, inlA, inlC, mpl, plcA, plcB, opuCA, prfA, and clpC). One PFGE type isolate possessed an epidemic clone II marker. Our findings suggest that isolates from bovine colostrum have the potential to cause human and animal listeriosis. This is the first study on the prevalence and characteristics of L. monocytogenes isolated from bovine colostrum obtained from dairy farms. Our results have important implications for improving public health and elucidating the epidemiology of L. monocytogenes in bovine colostrum.
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Affiliation(s)
- Megumi Hasegawa
- Department of Nutrition, School of Nursing and Nutrition, Tenshi College, Higashi-ku, Sapporo, Hokkaido 065-0013, Japan.
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Morioka Y, Kotani K, Kosai K, Omori Y, Fuchu H, Miake K, Goto S, Watanabe I, Kamisaki-Horikoshi N, Sameshima T, Nakashima Y, Inoguchi Y, Nishizaka K, Igimi S, Shinmura Y, Hattori A. Effects of Water Activity and Nisin on the Growth of Listeria monocytogenes in Raw Ham. J JPN SOC FOOD SCI 2013. [DOI: 10.3136/nskkk.60.619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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23
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Kamisaki-Horikoshi N, Sameshima T, Omori Y, Fuchu H, Miake K, Morioka Y, Kotani K, Kosai K, Goto S, Watanabe I, Nakashima Y, Inoguchi Y, Nishizaka K, Igimi S, Shinmura Y, Hattori A. Effects of Water Activity and Sodium Lactate on the Growth of Listeria monocytogenes in Raw Ham. J JPN SOC FOOD SCI 2013. [DOI: 10.3136/nskkk.60.347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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24
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Oaew S, Charlermroj R, Pattarakankul T, Karoonuthaisiri N. Gold nanoparticles/horseradish peroxidase encapsulated polyelectrolyte nanocapsule for signal amplification in Listeria monocytogenes detection. Biosens Bioelectron 2012; 34:238-43. [DOI: 10.1016/j.bios.2012.02.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2011] [Revised: 01/31/2012] [Accepted: 02/06/2012] [Indexed: 02/01/2023]
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25
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Kamisaki-Horikoshi N, Okada Y, Takeshita K, Sameshima T, Arihara K. Effects of pH, Water Activity, Nitrite and Sorbic Acid on the Growth Rate of Listeria monocytogenes in Cooked Meat Products and Raw Ham. J JPN SOC FOOD SCI 2012. [DOI: 10.3136/nskkk.59.186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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26
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Okada Y, Monden S, Igimi S, Yamamoto S. The occurrence of Listeria monocytogenes in imported ready-to-eat foods in Japan. J Vet Med Sci 2011; 74:373-5. [PMID: 22041477 DOI: 10.1292/jvms.11-0262] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Quantitative analyses of Listeria monocytogenes in imported ready-to-eat (RTE) foods sold at retail stores in Japan were performed. Of the 77 non-cooked meat products, 6 samples (7.8%) tested positive. The levels of contamination of 4 of the samples were below 100 colony-forming units (CFU)/g, which is the microbiological criterion for L. monocytogenes in RTE foods as determined by Codex. However, Listeria cells at levels of 100 and 400 CFU/g were detected in a salami sample and a raw ham sample, respectively. All of the 70 cheese samples and the 3 samples made from raw ham and cheese showed negative test results. These results suggest that imported RTE foods are potential sources of the causative agent of listeriosis.
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Affiliation(s)
- Yumiko Okada
- Division of Biomedical Food Research, National Institute of Health Sciences, Tokyo 158–8501, Japan.
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27
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OKADA Y, OKUTANI A, SUZUKI H, ASAKURA H, MONDEN S, NAKAMA A, MARUYAMA T, IGIMI S. Antimicrobial Susceptibilities of Listeria monocytogenes Isolated in Japan. J Vet Med Sci 2011; 73:1681-4. [DOI: 10.1292/jvms.11-0051] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Yumiko OKADA
- Division of Biomedical Food Research, National Institute of Health Sciences
| | - Akiko OKUTANI
- Division of Biomedical Food Research, National Institute of Health Sciences
| | - Hodaka SUZUKI
- Division of Biomedical Food Research, National Institute of Health Sciences
| | - Hiroshi ASAKURA
- Division of Biomedical Food Research, National Institute of Health Sciences
| | - Shuko MONDEN
- Division of Biomedical Food Research, National Institute of Health Sciences
| | - Akiko NAKAMA
- Division of Food Microbiology, Department of Microbiology, Tokyo Metropolitan Institute of Public Health
| | | | - Shizunobu IGIMI
- Division of Biomedical Food Research, National Institute of Health Sciences
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Ochiai Y, Yamada F, Batmunkh O, Mochizuki M, Takano T, Hondo R, Ueda F. Prevalence of Listeria monocytogenes in retailed meat in the Tokyo metropolitan area. J Food Prot 2010; 73:1688-93. [PMID: 20828477 DOI: 10.4315/0362-028x-73.9.1688] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
This study was conducted to determine the prevalence of Listeria monocytogenes in retailed meats, comprising beef, chicken, and pork, in the Tokyo metropolitan area. A total of 379 samples of retailed meat were collected from 1998 to 2003, most of which were obtained by simultaneously purchasing the three classes of meat from a shop and then making another simultaneous purchase of meat from the same shop a few weeks later. The prevalence of L. monocytogenes was 28.0%, and the serotypes isolated were mainly 1/2a, 1/2b, 1/2c, and 4b. Comparison of the prevalence of each serotype among the classes of meat showed a predominant distribution of serotypes 1/2a, 1/2b, and 4b in chicken, while serotype 1/2c was dominant in pork. A total of nine cases considered to be due to persistence and/or cross-contamination were found. Most of the strains involved in persistence and/or cross-contamination were of serotypes 1/2c or 4b. These results suggest that contamination in retailed meat in Japan is at almost the same level as in other countries and that chicken has the highest potential as a source of contamination and infection. In addition, we suggest that the ecological niche of serotype 1/2c is distinct from those of 1/2a, 1/2b, and 4b, which may explain why human hosts have less opportunity to be exposed to serotype 1/2c and why there is a lower rate of isolation of this serotype from cases of human listeriosis.
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Affiliation(s)
- Yoshitsugu Ochiai
- Department of Veterinary Science, Nippon Veterinary and Life Sciences University, Musashino, Tokyo, Japan.
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29
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Tracing the food sources of isolated strains of Listeria monocytogenes through fatty acid profiles analysis. Food Control 2010. [DOI: 10.1016/j.foodcont.2010.01.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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30
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Effects of gamma and electron beam irradiation on the survival of pathogens inoculated into sliced and pizza cheeses. Radiat Phys Chem Oxf Engl 1993 2010. [DOI: 10.1016/j.radphyschem.2009.12.016] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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31
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Isolation and characterization of Listeria monocytogenes from commercial asazuke (Japanese light pickles). Int J Food Microbiol 2010; 139:134-9. [DOI: 10.1016/j.ijfoodmicro.2010.03.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2009] [Revised: 02/10/2010] [Accepted: 03/16/2010] [Indexed: 11/22/2022]
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32
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Risk of Listeria monocytogenes contamination of raw ready-to-eat seafood products available at retail outlets in Japan. Appl Environ Microbiol 2010; 76:3383-6. [PMID: 20348310 DOI: 10.1128/aem.01456-09] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Examination of Listeria monocytogenes prevalence among ready-to-eat foods in Japan revealed frequent (5.7 to 12.1%) contamination of minced tuna and fish roe products, and the isolates had the same virulence levels as clinical isolates in terms of invasion efficiency and infectivity in cell cultures and a murine infection model, respectively. Premature stop codons in inlA were infrequent (1 out of 39 isolates). Cell numbers of L. monocytogenes in minced tuna and salmon roe increased rapidly under inappropriate storage temperatures (from a most probable number [MPN] of 10(0) to 10(1)/g to an MPN of 10(3) to 10(4)/g over the course of 2 days at 10 degrees C). Thus, regulatory guidelines are needed for acceptable levels of L. monocytogenes in these foods.
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33
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AINODA Y, HIRAI Y, SHOJI T, TOTSUKA K. Listeriosis in Non-Hodgkinʼs Lymphoma Following Outpatient R-CHOP Therapy. ACTA ACUST UNITED AC 2010; 84:602-5. [DOI: 10.11150/kansenshogakuzasshi.84.602] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yusuke AINODA
- Department of Infectious Disease, Tokyo Womenʼs Medical University
| | - Yuji HIRAI
- Department of Infectious Disease, Tokyo Womenʼs Medical University
- Department of Hematology, Tokyo Womenʼs Medical University
| | - Takayo SHOJI
- Department of Infectious Disease, Tokyo Womenʼs Medical University
- Department of Pediatrics, Tokyo Womenʼs Medical University
| | - Kyoichi TOTSUKA
- Department of Infectious Disease, Tokyo Womenʼs Medical University
- Department of Hematology, Tokyo Womenʼs Medical University
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Martinez Viedma P, Abriouel H, Ben Omar N, Lucas López R, Valdivia E, Gálvez A. Assay of enterocin AS-48 for inhibition of foodborne pathogens in desserts. J Food Prot 2009; 72:1654-9. [PMID: 19722396 DOI: 10.4315/0362-028x-72.8.1654] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Enterocin AS-48 was tested against Staphylococcus aureus, Bacillus cereus, and Listeria monocytogenes in different kinds of desserts. The highest activity against S. aureus was detected in baker cream. However, in yogurt-type soy-based desserts and in gelatin pudding, AS-48 (175 arbitrary units [AU]/g) reduced viable cell counts of S. aureus by only 1.5 to 1.8 log units at most. The efficacy of AS-48 in puddings greatly depended on inoculum size, and viable S. aureus counts decreased below detection levels within 24 h for inocula lower than 4 to 5.5 log CFU/g. For L. monocytogenes, bacteriocin concentrations of 52.5 to 87.5 AU/g reduced viable counts below detection levels and avoided regrowth of survivors. The lowest activity was detected in yogurt-type desserts. For B. cereus, viable cell counts were reduced below detection levels for bacteriocin concentrations of 52.5 AU/g in instant pudding without soy or by 175 AU/g in the soy pudding. In gelatin pudding, AS-48 (175 AU/g) reduced viable cell counts of B. cereus below detection levels after 8 h at 10 degrees C or after 48 h at 22 degrees C. Bacteriocin addition also inhibited gelatin liquefaction caused by the proteolytic activity of B. cereus.
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Affiliation(s)
- Pilar Martinez Viedma
- Area de Microbiología, Departamento de Ciencias de la Salud, Facultad de Ciencias Experimentales, Universidad de Jaén, 23071-Jaén, Spain
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Takeshi K, Kitagawa M, Kadohira M, Igimi S, Makino SI. Hazard analysis of Listeria monocytogenes contaminations in processing of salted roe from walleye pollock (Theragra chalcogramma) in Hokkaido, Japan. J Vet Med Sci 2009; 71:87-91. [PMID: 19194081 DOI: 10.1292/jvms.71.87] [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] Open
Abstract
Hazard analysis of Listeria monocytogenes contamination during processing of salted walleye pollock (Theragra chalcogramma) roe was performed for a seafood plant in Japan from December 2005 to February 2006. As a result, L. monocytogenes number was detected on the pallet used for transport of barrels in the salting process and one of the rollers of the roller conveyor, which rotates while in contact with the bottoms of the barrels, but was not detected in any raw materials, interim products or final products. Thus, we believe that the pallet contamination initially occurred because of insufficient washing, that it was passed on to the bottoms of the barrels and that it was then passed on the roller of the roller conveyor by cross-contamination. Therefore, it is possible that interim and final products may become contaminated by processing devices and machinery. In addition, we conducted an inoculation study designed at the 1/20 actual factory scale using interim products with or without artificial color and seeded with L. monocytogenes to observe changes in its growth. In the inoculation study, multiplication of L. monocytogenes during the salting process was not confirmed in the samples with artificial color.
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Affiliation(s)
- Koichi Takeshi
- Department of Applied Veterinary Science and Public Health, Obihiro University of Agriculture and Veterinary Medicine, 2-11 Inada-cho, Obihiro, Hokkaido, Japan.
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Ohkochi M, Nakazawa M, Sashihara N. Detection of Listeria monocytogenes in commercially broken unpasteurized liquid egg in Japan. J Food Prot 2009; 72:178-81. [PMID: 19205482 DOI: 10.4315/0362-028x-72.1.178] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Unpasteurized liquid whole-egg samples were collected from six and seven commercial establishments across Japan in 1993 and 1994 and in 2005, respectively. The samples were tested for the presence of Listeria spp. and Listeria monocytogenes. Detection rates of the Listeria spp. were greatly different among the egg-breaking facilities, with a range of 8 to 55%. There was no significant difference in the contamination rate between the samples from 1993 and 1994 and from 2005. L. monocytogenes was isolated from 2 of 487 (0.4%) samples in 1993 and 1994, and 2 of 316 (0.6%) samples in 2005. These detection rates are lower than known detection rates of other livestock products (5.1 to 42%). In 2005, the L. monocytogenes-positive samples were quantified by a most-probable-number counting experiment, and the contamination levels were below 7.5 organisms per 25 g of sample. D55 degrees C-values of 0.59 to 4.08/min were determined for L. monocytogenes isolated in this study. This heat tolerance is in a good agreement with past reports, and slightly higher than that of Salmonella. This study suggests that the legal pasteurization condition of liquid egg is sufficient to ensure microbial safety against L. monocytogenes because the contamination rate and its level are considerably low.
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Affiliation(s)
- Miho Ohkochi
- Research and Development Division, Q.P. Corporation, 5-13-1, Sumiyoshi-cho, Fuchu-shi, Tokyo, 183-0034, Japan
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37
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HARA H, OHASHI Y, SAKURAI T, YAGI K, FUJISAWA T, IGIMI S. Effect of Nisin (Nisaplin) on the Growth of Listeria monocytogenes in Karashi-mentaiko (Red-pepper Seasoned Cod Roe). Food Hygiene and Safety Science (Shokuhin Eiseigaku Zasshi) 2009; 50:173-7. [DOI: 10.3358/shokueishi.50.173] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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38
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Okada Y, Makino S, Okada N, Asakura H, Yamamoto S, Igimi S. Identification and analysis of the osmotolerance associated genes inListeria monocytogenes. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2008; 25:1089-94. [DOI: 10.1080/02652030802056634] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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39
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HONJOH KI, FUJIHARA K, HARAGUCHI T, ONO Y, KOBAYASHI H, HIWAKI H, KAMIKADO H, JANG SS, RYU S, MIYAMOTO T. Subtyping of Listeria monocytogenes Based on Nucleotide Polymorphism in the clpC, inlA, hlyA, and plcA Genes and Rapid Identification of L. monocytogenes Genetically Similar to Clinical Isolates. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2008. [DOI: 10.3136/fstr.14.557] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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40
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Ito Y, Hosoi T, Miyao S. Changes in Growth of Artificially Inoculated Refampicin-resistant Listeria monocytogenes in Refrigerated Lightly Pickled Cucumber Induced by Addition of Antimicrobial Food Additives. J JPN SOC FOOD SCI 2008. [DOI: 10.3136/nskkk.55.151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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41
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Handa-Miya S, Kimura B, Takahashi H, Sato M, Ishikawa T, Igarashi K, Fujii T. Nonsense-mutated inlA and prfA not widely distributed in Listeria monocytogenes isolates from ready-to-eat seafood products in Japan. Int J Food Microbiol 2007; 117:312-8. [PMID: 17566579 DOI: 10.1016/j.ijfoodmicro.2007.05.003] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2007] [Revised: 04/15/2007] [Accepted: 05/09/2007] [Indexed: 11/29/2022]
Abstract
InlA is a surface protein participating in the entry of Listeria monocytogenes into mammalian non-phagocytic cells. PrfA is a positive regulatory factor that regulates the expression of a set of virulence genes. Recent studies revealed that some L. monocytogenes strains have a truncated form of these proteins because of nonsense mutations in their sequences, and these truncations contribute to the significant reduction in virulence of this pathogen. In this study, sequence analyses of inlA and prfA among L. monocytogenes isolated from ready-to-eat seafood revealed that only one out of 59 isolates had a nonsense-mutated inlA and all had non-mutated prfA. This indicated that these strains could be fully virulent based on the sizes of these proteins.
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Affiliation(s)
- Satoko Handa-Miya
- Department of Food Science and Technology, Tokyo University of Marine Science and Technology, Japan
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Jo C, Kim HJ, Kim DH, Lee WK, Ham JS, Byun MW. Radiation sensitivity of selected pathogens in ice cream. Food Control 2007. [DOI: 10.1016/j.foodcont.2006.04.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Latorre L, Parisi A, Fraccalvieri R, Normanno G, La Porta MCN, Goffredo E, Palazzo L, Ciccarese G, Addante N, Santagada G. Low prevalence of Listeria monocytogenes in foods from Italy. J Food Prot 2007; 70:1507-12. [PMID: 17612085 DOI: 10.4315/0362-028x-70.6.1507] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Listeria monocytogenes is an important foodborne pathogen that causes gastrointestinal disorders, and, especially in immunocompromised people, serious extraintestinal diseases, such as septicemia and meningitis, as well as abortion in pregnant women. Many foods, from both plant and animal origin, have been involved in listeriosis outbreaks. This article reports the results of a 12-year survey (1993 through 2004) on the presence of L. monocytogenes in several kinds of food marketed in Italy. Of 5,788 analyzed samples, 121 (2.1%) were contaminated with L. monocytogenes. The highest prevalence was found in smoked salmon (10.6%) and in poultry meat samples (8.5%) and the lowest in red meat (0.3%). L. monocytogenes was not found in 154 samples of fresh seafood products. Fifty-two isolates were also serotyped by the agglutination method. The most common serotypes detected in the 52 strains tested were 1/2a (36.5%), followed by 1/2c (32.8%), 1/2b (13.5%), 4b (11.5%), 3a (3.8%), and 3b (1.9%). The results of the present study showed low levels of L. monocytogenes in the analyzed samples. A total of 61.5% of the 52 L. monocytogenes strains analyzed belonged to serotypes 1/2a, 1/2b, and 4b, namely the serovars that are most commonly involved in extraintestinal human listeriosis outbreaks. In the ready-to-eat samples, these three serotypes were 40.0% (1/2a), 17.1% (1/2b), and 14.3% (4b). This finding highlights the need to implement strict hygienic measures during the production, distribution, and sale of foods to reduce the risk of foodborne listeriosis in humans to an acceptable level.
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Affiliation(s)
- L Latorre
- Experimental Zooprophylactic Institute of Apulia and Basilicata, V. della Tecnica 23, 75100 Matera.
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Okada Y, Okada N, Makino SI, Asakura H, Yamamoto S, Igimi S. The sigma factor RpoN (sigma54) is involved in osmotolerance in Listeria monocytogenes. FEMS Microbiol Lett 2006; 263:54-60. [PMID: 16958851 DOI: 10.1111/j.1574-6968.2006.00405.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Listeria monocytogenes is able to grow under conditions of high osmolarity. We constructed a deletion mutant of rpoN, encoding the alternative sigma factor RpoN, and analyzed its response to osmotic stress. In a minimal medium with 4% NaCl and 1 mM betaine, the mutant showed a similar growth to that of the parental strain, EGD. In the same medium with 4% NaCl and 1 M carnitine, the growth rate of the mutant was greatly reduced, when the optical density at 600 nm (OD600) at the starting point of growth, was 0.15. However, when growth of the culture was started at an OD600 of 0.025, the growth of the mutant was similar to that of EGD. The mutant's expression of two betaine transporter genes, betL and gbuB, and the carnitine transporter gene opuCA, was osmotically induced at a level similar to EGD, and its rate of carnitine uptake was similar to that of EGD. These results suggest that the growth defect from the rpoN mutant is caused not by the transcriptional regulation of opuCA or by a decrease in carnitine uptake, but possibly by larger amounts of carnitine being needed for growth of the mutant in minimal medium when NaCl is present.
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Affiliation(s)
- Yumiko Okada
- Division of Biomedical Food Research, National Instutute of Health Sciences, Tokyo 158-8501, Japan.
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Kiss R, Tirczka T, Szita G, Bernáth S, Csikó G. Listeria monocytogenes food monitoring data and incidence of human listeriosis in Hungary, 2004. Int J Food Microbiol 2006; 112:71-4. [PMID: 16934896 DOI: 10.1016/j.ijfoodmicro.2006.06.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2005] [Revised: 03/14/2006] [Accepted: 06/03/2006] [Indexed: 11/17/2022]
Abstract
Food samples were monitored for contamination with Listeria monocytogenes, and the incidence of human listeriosis was evaluated according to the data obtained in Hungary in the year 2004. Of the food samples tested, the bacterium was most often detectable in milk and dairy products, as 72.1% of all L. monocytogenes strains were isolated from these samples. The food samples most commonly yielded strains of serotype 1/2a (45.1%) and 4b (27.0%). In 2004, 3 perinatal and 14 nonperinatal human listeriosis cases were diagnosed in Hungary. These disease cases were most often caused by strains belonging to serotype 4b (52.8%) and serotype 1/2a (23.5%). On the basis of the antibiotic sensitivity test results of strains isolated from the disease cases, penicillin and aminoglycoside antibiotics or a combination thereof were found to be effective.
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Affiliation(s)
- Réka Kiss
- National Institute for Foodsafety and Nutrition, Budapest, Hungary
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Hearty S, Leonard P, Quinn J, O'Kennedy R. Production, characterisation and potential application of a novel monoclonal antibody for rapid identification of virulent Listeria monocytogenes. J Microbiol Methods 2006; 66:294-312. [PMID: 16457899 DOI: 10.1016/j.mimet.2005.12.009] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2005] [Revised: 12/14/2005] [Accepted: 12/19/2005] [Indexed: 12/01/2022]
Abstract
A panel of hybridomas was produced using intact Listeria monocytogenes serotype 1/2a cells as the immunogen. An IgG2a monoclonal antibody (mAb) 'mAb2B3' was isolated that reacted with L. monocytogenes but not with a representative panel of related Listeria spp. and non-Listeria spp. Binding activity was greatest against L. monocytogenes serotype 1/2a and was significantly enhanced when cells were prepared in Listeria enrichment broth (LEB). The reactive epitope was deduced, by immunoblot analysis, to be a surface localised protein of approximately 80 kilodaltons (kDa), putatively assumed to be internalin A (InlA). Recombinant InlA protein was subsequently expressed in Escherischia coli. When crude E. coli cell lysates were subjected to immunoblot analysis, it was demonstrated that the mAb bound specifically to the heterologously expressed recombinant InlA protein, thus confirming the specificity of the mAb. The mAb was further evaluated in a series of enzyme-linked-immunosorbent assay (ELISA)-based formats and in a surface plasmon resonance (SPR)-based biosensor platform. Both configurations were capable of differential identification of virulent L. monocytogenes at concentrations greater than or equal to 1x10(7) cells/ml. Notwithstanding the apparent insensitivity, the results indicate that InlA could be exploited as a marker for highly specific confirmatory identification of pathogenic L. monocytogenes following primary enrichment of suspect food samples, using the anti-InlA antibody 'mAb2B3', described herein.
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Affiliation(s)
- Stephen Hearty
- School of Biotechnology, Dublin City University, Dublin 9, Ireland
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Nakamura H, Tokuda Y, Sono A, Koyama T, Ogasawara J, Hase A, Haruki K, Nishikawa Y. Molecular typing to trace Listeria monocytogenes isolated from cold-smoked fish to a contamination source in a processing plant. J Food Prot 2006; 69:835-41. [PMID: 16629026 DOI: 10.4315/0362-028x-69.4.835] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
In this study, Listeria monocytogenes contamination in a cold-smoked fish processing plant in Osaka, Japan, was examined from 2002 to 2004. A total of 430 samples were collected and divided into five categories: raw fish, materials during processing, processing equipment, environment, and finished products. A total of 59 finished products were examined throughout this study. L. monocytogenes was isolated from four of these samples during summer and autumn but was not found during winter or spring. During the warmer seasons, L. monocytogenes was more prevalent on processing equipment, especially slicing machines (8 of 54 samples in summer and autumn versus 1 of 50 samples in winter and spring). L. monocytogenes was not detected on whole skins removed from 23 frozen raw fish. L. monocytogenes strains isolated from 56 samples were characterized by serotyping, pulsed-field gel electrophoresis, and three PCR-based methods. Seventy-seven L. monocytogenes strains were recognized as contaminants of the samples: 2 distinguishable strains were identified in each of 13 samples, 3 strains were identified in 2 samples, 5 strains were identified in 1 sample, and the other 40 strains were identified in 40 samples. Combining the results from these techniques, 77 strains were classified into 13 different types. Three of these types prevailed throughout the plant, and two of the three were also isolated from final products. The DNA subtype found in the product was also found on the slicing machines. Our findings suggest that the slicing machines at this plant were the source of the product contamination. Implementing an appropriate cleaning regime for the slicing machines was effective in preventing contamination.
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Affiliation(s)
- Hiromi Nakamura
- Department of Food and Human Health Sciences, Graduate School of Human Life Science, Osaka City University, Japan.
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48
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Kimura B. Recent Advances in the Study of the Genotypic Diversity and Ecology of Listeria monocytogenes. Microbes Environ 2006. [DOI: 10.1264/jsme2.21.69] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Bon Kimura
- Department of Food Science and Technology, Faculty of Marine Science, Tokyo University of Marine Science and Technology
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Makino SI, Kawamoto K, Takeshi K, Okada Y, Yamasaki M, Yamamoto S, Igimi S. An outbreak of food-borne listeriosis due to cheese in Japan, during 2001. Int J Food Microbiol 2005; 104:189-96. [PMID: 15979181 DOI: 10.1016/j.ijfoodmicro.2005.02.009] [Citation(s) in RCA: 122] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2004] [Revised: 12/28/2004] [Accepted: 02/12/2005] [Indexed: 11/29/2022]
Abstract
Food-borne outbreaks caused by Listeria monocytogenes have been recognized in US and European countries. Only sporadic cases, of neonatal listeriosis, have been reported in Japan. Since L. monocytogenes has been often isolated from foods in Japan, food-borne outbreaks potentially could have occurred. In February 2001, L. monocytogenes serotype 1/2b was isolated from a washed-type cheese during routine Listeria monitoring of 123 domestic cheeses. Further samples from products and the environments at the plant that produced the contaminated cheese were examined for L. monocytogenes. L. monocytogenes serotype 1/2b was detected in 15 cheese samples, at most probable number that ranged from <30 to 4.6 x 10(9)/100 g, and in environmental samples. Studies with people who had consumed cheese from the plant revealed 86 persons who had been infected with L. monocytogenes. Thirty-eight of those people had developed clinical symptoms of gastroenteritis or the common cold type after the consumption of cheese. Isolates from those patients exhibited the same serotype, pathogenicity for mice and HeLa cells, DNA fingerprinting patterns and PCR amplification patterns. From the epidemiological and genetic evidence, it appeared that the outbreak was caused by cheese. This is the first documented incidence of food-borne listeriosis in Japan.
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Affiliation(s)
- S-I Makino
- Laboratory of Food Microbiology and Immunology, Research Center for Animal Hygiene and Food Safety, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan.
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Jo C, Lee NY, Kang H, Hong S, Kim Y, Kim HJ, Byun MW. Radio-sensitivity of pathogens in inoculated prepared foods of animal origin. Food Microbiol 2005. [DOI: 10.1016/j.fm.2004.09.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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