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Figueroa Y, Gentiluomo J, Grisaro A, Buffoni M, Zipenco N, Sucari A, Buonfiglio P, Costa M. [Epidemiological study and serotyping by multiple PCR of Listeria monocytogenes isolated from food matrices in Argentina]. Rev Argent Microbiol 2023; 55:387-394. [PMID: 37479608 DOI: 10.1016/j.ram.2023.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 03/17/2023] [Accepted: 05/21/2023] [Indexed: 07/23/2023] Open
Abstract
Listeria monocytogenes is an opportunistic foodborne pathogen. It can resist stress conditions by adapting through the production of biofilms, which represents a serious problem for the food industry. It is classified into 14 serotypes, although only four (1/2a, 1/2b, 1/2c, and 4b) account for 89.0-98.0% of listeriosis cases worldwide. The objective of this study was to detect and serotype L.monocytogenes isolated from different food matrices from processing plants in Argentina. In the period 2016-2021, 1832 samples (meat, ready-to-eat foods, ice cream, dairy foods, and frozen vegetables) were analyzed, of which 226 (12.34%) isolates compatible with L.monocytogenes were detected. At the same time, environmental and surface samplings were performed in processing plants for ready-to-eat foods, sausages and dairy products, where environmental contamination with L.monocytogenes was detected in numerous critical points of the process, yielding a positivity rate of 22.7%. The molecular analysis of serogroups was performed, where it was observed that serogroup IIb was the most frequent with 66.5% (n=107), and in descending order IIc with 22.3% (n=36), and IIa (n=9) and IVb (n=9) with 5.6%. The serogroup mostly isolated in environmental monitoring was IIb. This work highlights the importance of the detection and serotyping of L.monocytogenes for taking actionable measures and identifying outbreaks, and is the first study in Argentina to describe an extensive study in food matrices.
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Affiliation(s)
- Yamila Figueroa
- División Higiene y Seguridad Alimentaria y Ambiental, Stamboulian Servicios de Salud, Buenos Aires, Argentina.
| | - Jimena Gentiluomo
- División Higiene y Seguridad Alimentaria y Ambiental, Stamboulian Servicios de Salud, Buenos Aires, Argentina
| | - Agustina Grisaro
- División Higiene y Seguridad Alimentaria y Ambiental, Stamboulian Servicios de Salud, Buenos Aires, Argentina
| | - Mariana Buffoni
- División Higiene y Seguridad Alimentaria y Ambiental, Stamboulian Servicios de Salud, Buenos Aires, Argentina
| | - Nadia Zipenco
- División Higiene y Seguridad Alimentaria y Ambiental, Stamboulian Servicios de Salud, Buenos Aires, Argentina
| | - Adriana Sucari
- División Higiene y Seguridad Alimentaria y Ambiental, Stamboulian Servicios de Salud, Buenos Aires, Argentina
| | - Paula Buonfiglio
- Laboratorio de Fisiología y Genética de la Audición, Instituto de Investigaciones en Ingeniería Genética y Biología Molecular Dr. Hector N. Torres (INGEBI-CONICET), Ciudad Autónoma de Buenos Aires, Argentina
| | - Magdalena Costa
- IGEVET - Instituto de Genética Veterinaria Ing. Fernando N. Dulout (UNLP-CONICET LA PLATA), Facultad de Ciencias Veterinarias, La Plata, Buenos Aires, Argentina
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Li C, Bai M, Chen X, Hu W, Cui H, Lin L. Controlled release and antibacterial activity of nanofibers loaded with basil essential oil-encapsulated cationic liposomes against Listeria monocytogenes. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.101578] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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3
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Maćkiw E, Korsak D, Kowalska J, Felix B, Stasiak M, Kucharek K, Antoszewska A, Postupolski J. Genetic diversity of Listeria monocytogenes isolated from ready-to-eat food products in retail in Poland. Int J Food Microbiol 2021; 358:109397. [PMID: 34536853 DOI: 10.1016/j.ijfoodmicro.2021.109397] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 09/01/2021] [Accepted: 09/04/2021] [Indexed: 12/22/2022]
Abstract
The study describes the characterization of Listeria monocytogenes isolated from the general 2017-2019 national official control and monitoring sampling program. A total of 60,928 of ready-to-eat (RTE) food products were collected in retail in Poland, while the number of L. monocytogenes contaminated samples was 67 (0.1%). The majority of the strains belonged to molecular serotype IVb followed by IIa, frequently associated with human listeriosis. Furthermore, 61.2% of the isolates were resistant at least to one of the tested antimicrobials: penicillin, ampicillin, meropenem, erythromycin, sulfamethoxazole-trimethoprim, amoxicillin-clavulanic acid, ciprofloxacin, chloramphenicol, gentamicin, vancomycin, tetracycline and rifampicin. Virulence genes inlA, inlC, inlJ and lmo2672 were detected in all of the isolates. In our study the llsX gene (encoding LLS) exhibited 11.6% positivity. The 32 strains were grouped into 12 clonal complexes (CCs) which belong to the major clones that are in circulation in Europe. Among them, seven strains with the cgMLST close relatedness (CC2) were isolated from diverse food sectors, underlining a large circulation of this clone in Poland, most likely from multiple introduction sources. Additionally, two RTE strains CC6 and one CC37 were identified as closely related by cgMLST to two publicly available genomes of clinical strains isolated in Poland in 2012-2013. These results indicate the large strain circulation and point to RTE food products as a potential source of human listeriosis. The present study provided data to capture the contamination status of L. monocytogenes in foods at the retail level in Poland and assess the potential risk of this pathogen for human safety.
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Affiliation(s)
- Elżbieta Maćkiw
- Department of Food Safety, National Institute of Public Health NIH - National Research Institute, Warsaw, Poland.
| | - Dorota Korsak
- Department of Food Safety, National Institute of Public Health NIH - National Research Institute, Warsaw, Poland
| | - Joanna Kowalska
- Department of Food Safety, National Institute of Public Health NIH - National Research Institute, Warsaw, Poland
| | - Benjamin Felix
- European Union Reference Laboratory for L. monocytogenes, ANSES, Laboratory for Food Safety, University of Paris-Est, 94700 Maisons-Alfort, France
| | - Monika Stasiak
- Department of Food Safety, National Institute of Public Health NIH - National Research Institute, Warsaw, Poland
| | - Katarzyna Kucharek
- Department of Food Safety, National Institute of Public Health NIH - National Research Institute, Warsaw, Poland
| | - Aleksandra Antoszewska
- Department of Food Safety, National Institute of Public Health NIH - National Research Institute, Warsaw, Poland
| | - Jacek Postupolski
- Department of Food Safety, National Institute of Public Health NIH - National Research Institute, Warsaw, Poland
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Evangelista AG, Corrêa JAF, Pinto ACSM, Luciano FB. The impact of essential oils on antibiotic use in animal production regarding antimicrobial resistance - a review. Crit Rev Food Sci Nutr 2021; 62:5267-5283. [PMID: 33554635 DOI: 10.1080/10408398.2021.1883548] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Population growth directly affects the global food supply, demanding a higher production efficiency without farmland expansion - in view of limited land resources and biodiversity loss worldwide. In such scenario, intensive agriculture practices have been widely used. A commonly applied method to maximize yield in animal production is the use of subtherapeutic doses of antibiotics as growth promoters. Because of the strong antibiotic selection pressure generated, the intense use of antibiotic growth promoters (AGP) has been associated to the rise of antimicrobial resistance (AMR). Also, cross-resistance can occur, leading to the emergence of multidrug-resistant pathogens and limiting treatment options in both human and animal health. Thereon, alternatives have been studied to replace AGP in animal production. Among such alternatives, essential oils and essential oil components (EOC) stand out positively from others due to, besides antimicrobial effectiveness, improving zootechnical indexes and modulating genes involved in resistance mechanisms. This review summarizes recent studies in essential oils and EOC for zoonotic bacteria control, providing detailed information about the molecular-level effects of their use in regard to AMR, and identifying important gaps to be filled within the animal production area.
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Affiliation(s)
- Alberto Gonçalves Evangelista
- Graduate Program in Animal Science, Pontifical Catholic University of Paraná, Prado Velho - Curitiba, Paraná, Brazil
| | - Jessica Audrey Feijó Corrêa
- Graduate Program in Animal Science, Pontifical Catholic University of Paraná, Prado Velho - Curitiba, Paraná, Brazil
| | | | - Fernando Bittencourt Luciano
- Graduate Program in Animal Science, Pontifical Catholic University of Paraná, Prado Velho - Curitiba, Paraná, Brazil
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Keet R, Rip D. Listeria monocytogenes isolates from Western Cape, South Africa exhibit resistance to multiple antibiotics and contradicts certain global resistance patterns. AIMS Microbiol 2021; 7:40-58. [PMID: 33659768 PMCID: PMC7921373 DOI: 10.3934/microbiol.2021004] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 01/04/2021] [Indexed: 01/21/2023] Open
Abstract
Food-borne disease outbreaks are common and offer valuable insights into the causes, impacts, and mechanisms underlying food pathogens. This also serves as a good foundation to validate the performance of current best practice control methods, for example antibiotics, that are used in the fight against food pathogens. Listeriosis outbreaks, caused by Listeria monocytogenes, is no exception. In 2018, South Africa experienced the largest global listeriosis outbreak recorded to date. However, despite the scale of this outbreak, information on the bacterium and its resistance towards antibiotics is still severely lacking. Furthermore, until now it remained to be determined whether L. monocytogenes antibiotic resistance patterns in South Africa mirror resistance patterns elsewhere in the world. The aim of this study was therefore to evaluate the efficacy of antibiotics that are currently used against L. monocytogenes. Using the European Committee on Antimicrobial Susceptibility Testing (EUCAST) disc diffusion method, L. monocytogenes isolates (n = 177) from diverse origins in the Western Cape, South Africa (clinical, food, and environment) were tested for susceptibility against five different antibiotics, namely ampicillin, erythromycin, chloramphenicol, gentamicin, and tetracycline. Isolates were collected over a period of two years (2017-2019). All isolates were susceptible to ampicillin, the currently recommended antibiotic, while a large number of isolates were resistant to chloramphenicol, erythromycin, and tetracycline. Also, patterns of resistance observed here are different to patterns observed elsewhere. The findings of this study demonstrate that it is imperative to continuously monitor the efficacy of currently recommended antibiotics, since resistance patterns can quickly develop when such antibiotics are overutilized, and secondly, that it is crucial to assess local antibiotic resistance patterns in conjunction with global patterns, since the latter is not necessarily generalizable to local scales.
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Affiliation(s)
| | - Diane Rip
- Department of Food Science, Centre for Food Safety, Stellenbosch University, South Africa
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Assessment of the Prevalence and Drug Susceptibility of Listeria monocytogenes Strains Isolated from Various Types of Meat. Foods 2020; 9:foods9091293. [PMID: 32937989 PMCID: PMC7554916 DOI: 10.3390/foods9091293] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 09/03/2020] [Accepted: 09/05/2020] [Indexed: 01/12/2023] Open
Abstract
Listeria monocytogenes are the etiological factor of listeriosis, and their main source for humans is food. The aim of the current study was to assess the contamination of various types of meat and the drug susceptibility of isolated L. monocytogenes. Between 2016–2018, 6000 swabs were taken (2000 annually) from the surface of pork, beef, and poultry. The analysis of intermediate and finished product samples was carried out in accordance with ISO 11290-1 (International Organization for Standardization). The genetic similarity assessment of the isolates obtained was based on the Pulsed Field Gel Electrophoresis (PFGE) method, and drug-sensitivity assessment using the disc-diffusion method. We found 2.1% of collected samples were L. monocytogenes positive. The level of meat contamination varied depending on its matrix. Most L. monocytogenes were isolated from poultry. It was shown that 39 (32.5%) strains were sensitive to all tested antibiotics and eight (6.7%) were resistant to all five tested antimicrobials. Most strains tested were resistant to cotrimoxazole (55; 45.8%) and meropenem (52; 43.3%), followed by erythromycin (48; 40.0%), penicillin (31; 25.8%), and ampicillin (21; 17.5%). High prevalence of this pathogen may be a serious problem, especially when linked with antibiotic resistance and high percentage of serotypes responsible for listeriosis outbreaks.
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7
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Zhao S, Li N, Li Z, He H, Zhao Y, Zhu M, Wang Z, Kang Z, Ma H. Shelf life of fresh chilled pork as affected by antimicrobial intervention with nisin, tea polyphenols, chitosan, and their combination. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2019. [DOI: 10.1080/10942912.2019.1625918] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Shengming Zhao
- School of Food Science, Henan Institute of Science and Technology, Henan Province Engineering Technology Research Center of Animal Products Intensive Processing and Quality Safety Control, Xinxiang, P.R. China
| | - Ningning Li
- School of Food Science, Henan Institute of Science and Technology, Henan Province Engineering Technology Research Center of Animal Products Intensive Processing and Quality Safety Control, Xinxiang, P.R. China
| | - Zhao Li
- School of Food Science, Henan Institute of Science and Technology, Henan Province Engineering Technology Research Center of Animal Products Intensive Processing and Quality Safety Control, Xinxiang, P.R. China
| | - Hongju He
- School of Food Science, Henan Institute of Science and Technology, Henan Province Engineering Technology Research Center of Animal Products Intensive Processing and Quality Safety Control, Xinxiang, P.R. China
| | - Yanyan Zhao
- School of Food Science, Henan Institute of Science and Technology, Henan Province Engineering Technology Research Center of Animal Products Intensive Processing and Quality Safety Control, Xinxiang, P.R. China
| | - Mingming Zhu
- School of Food Science, Henan Institute of Science and Technology, Henan Province Engineering Technology Research Center of Animal Products Intensive Processing and Quality Safety Control, Xinxiang, P.R. China
| | - Zhengrong Wang
- School of Food Science, Henan Institute of Science and Technology, Henan Province Engineering Technology Research Center of Animal Products Intensive Processing and Quality Safety Control, Xinxiang, P.R. China
| | - Zhuangli Kang
- School of Food Science, Henan Institute of Science and Technology, Henan Province Engineering Technology Research Center of Animal Products Intensive Processing and Quality Safety Control, Xinxiang, P.R. China
| | - Hanjun Ma
- School of Food Science, Henan Institute of Science and Technology, Henan Province Engineering Technology Research Center of Animal Products Intensive Processing and Quality Safety Control, Xinxiang, P.R. China
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Liu CX, Xiao YP, Hu DW, Liu JX, Chen W, Ren DX. The safety evaluation of chilled pork from online platform in China. Food Control 2019. [DOI: 10.1016/j.foodcont.2018.09.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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9
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Prevalence and Antibiotic Resistance of Listeria monocytogenes Isolated from Ready-to-Eat Foods in Turkey. J FOOD QUALITY 2018. [DOI: 10.1155/2018/7693782] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
The aim of the present study was the determination of the prevalence and antibiotic resistance of L. monocytogenes in ready-to-eat (RTE) foods in Ankara, Turkey. In order to detect and isolate L. monocytogenes from 201 RTE food samples, the EN ISO 11290:1 method was used. All isolates were identified using the polymerase chain reaction. The strains were also confirmed by the detection of the hemolysin gene (hlyA). The overall prevalence of L. monocytogenes was 8.5% among the food samples. Seventeen L. monocytogenes strains were examined by the disk diffusion assay for their resistance to 23 antibiotics. All strains were susceptible to erythromycin, clarithromycin, streptomycin, gentamicin, vancomycin, imipenem, trimethoprim, and chloramphenicol, while all strains were resistant to nalidixic acid, ampicillin, penicillin G, linezolid, and clindamycin. The higher resistance was found against oxacillin (94.1%), kanamycin (76.5%), levofloxacin (70.6%), and teicoplanin (64.7%), followed by amoxicillin/clavulanic acid (53.0%), rifampicin (47.1%), and ciprofloxacin (35.3%). A lower incidence of resistance was observed against tetracycline (5.9%), meropenem (5.9%), and trimethoprim/sulfamethoxazole (17.7%). All isolates were multidrug resistant showing resistance to at least three antibiotic classes. High L. monocytogenes prevalence among analyzed RTE foods represents a high risk for public health. Our findings show a high prevalence of L. monocytogenes in RTE foods in Turkey. More effective control strategies for L. monocytogenes are needed to reduce both prevalence and resistance of L. monocytogenes in Turkish RTE foods.
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Li H, Wang P, Lan R, Luo L, Cao X, Wang Y, Wang Y, Li H, Zhang L, Ji S, Ye C. Risk Factors and Level of Listeria monocytogenes Contamination of Raw Pork in Retail Markets in China. Front Microbiol 2018; 9:1090. [PMID: 29896170 PMCID: PMC5986919 DOI: 10.3389/fmicb.2018.01090] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 05/07/2018] [Indexed: 11/13/2022] Open
Abstract
Listeria monocytogenes can contaminate various foods via food processing environments and contamination of raw materials. There is a limited understanding of L. monocytogenes transmission in retail market and the role of insects in L. monocytogenes transmission in the retail environments. To better understand the risk factors of raw pork contamination, the prevalence of L. monocytogenes was examined in raw pork, retail environments and insects in a retail market over a 6-month period from March to August in 2016 in Beijing, China. A total of 2,789 samples were collected, including 356 raw pork samples, 1,392 meat contact surface swabs (MCS), 712 non-meat contact surface swabs (NMCS) and 329 insect samples. Overall, 424 (15.20%) of the samples were found to be contaminated by L. monocytogenes. Analyzed by serotyping, multilocus sequence typing and pulsed-field gel electrophoresis, the 424 L. monocytogenes isolates were divided into three serotypes (1/2c, 1/2a and 3a), 15 pulsotypes (PTs) and nine sequence types (STs), 1/2c/PT4/ST9 (244/424, 58%) was the most prevalent type of L. monocytogenes strains. The raw pork, MCS of the environments and insects were contaminated with higher levels of L. monocytogenes than NMCS of the environments, which suggested that cross contamination of L. monocytogenes between raw pork and the environment existed in the retail market, and long-term contaminated surfaces and vector insects would act as high risk factors to transmit L. monocytogenes to raw pork. Thus more effective strategies are needed to reduce the risk of retail pork meat contamination by L. monocytogenes and prevent foodborne human listeriosis.
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Affiliation(s)
- Hua Li
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
- Tongzhou District Center for Disease Control and Prevention, Beijing, China
| | - Pengfei Wang
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Ruiting Lan
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW, Australia
| | - Lijuan Luo
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Xiaolong Cao
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
- Beijing Changping Institute for Tuberculosis Prevention and Treatment, Beijing, China
| | - Yi Wang
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Yan Wang
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Hui Li
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
- Department of Microbiology, Guizhou Medical University, Guiyang, China
| | - Lu Zhang
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Shunshi Ji
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Changyun Ye
- State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
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Prevalence and molecular characteristics of Listeria monocytogenes in cooked products and its comparison with isolates from listeriosis cases. Front Med 2018; 12:104-112. [PMID: 29372499 DOI: 10.1007/s11684-017-0593-9] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 09/22/2017] [Indexed: 10/18/2022]
Abstract
This study aimed to investigate the prevalence and molecular characteristics of Listeria monocytogenes in cooked products in Zigong City, China. The overall occurrence of the L. monocytogenes in the ready-to-eat (RTE) shops and mutton restaurants surveyed was 16.2% (141/873). An occurrence of 13.5% was observed in RTE pork, 6.5% in RTE vegetables, and more than 24.0% in either cooked mutton or cooked haggis. Serotype 1/2b (45.4%), 1/2a (33.3%), and 1/2c (14.2%) were the predominant types. By comparing the clonal complexes (CCs) based on multilocus sequence typing (MLST) of the L. monocytogenes from cooked foods in Zigong City and 33 listeriosis cases from different districts of China, CC87, CC9, CC8, and CC3 were showed to be prevalent in cooked products and CC87 and CC3 were the first two frequent types in the 33 clinic-source strains. All CC87 stains harbored the newly reported Listeria pathogenicity island 4 (LIPI-4) gene fragment ptsA, and all CC3 strains possessed the Listeria pathogenicity island 3 (LIPI-3) gene fragment llsX. These may increase the occurrence of the strains belonging to CC87 and CC3 in listeriosis cases in China and also underline the risk of infection owing to the consumption of the cooked products from Zigong. ST619 (serotype 1/2b) harbored both llsX and ptsA, indicating a potential hypervirulent sequence type in Zigong.
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12
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Enhanced sensitivity of lateral-flow test strip immunoassays using colloidal palladium nanoparticles and horseradish peroxidase. Lebensm Wiss Technol 2017. [DOI: 10.1016/j.lwt.2017.08.027] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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Ye K, Wang K, Liu M, Liu J, Zhu L, Zhou G. Mathematical modelling of growth of Listeria monocytogenes in raw chilled pork. Lett Appl Microbiol 2017; 64:309-316. [PMID: 28129445 DOI: 10.1111/lam.12721] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 12/24/2016] [Accepted: 01/24/2017] [Indexed: 01/20/2023]
Abstract
The aim of this study was to analyse the growth kinetics of Listeria monocytogenes in naturally contaminated chilled pork. A cocktail of 26 meat-borne L. monocytogenes was inoculated to raw or sterile chilled pork to observe its growth at 4, 10, 16, 22 and 28°C respectively. The growth data were fitted by the Baranyi model and Ratkowsky square-root model. Results showed that the Baranyi model and Ratkowsky square-root model could describe the growth characteristics of L. monocytogenes at different temperatures reasonably well in raw chilled pork (1·0 ≤ Bf ≤ Af ≤ 1·1). Compared with the growth of L. monocytogenes in sterile chilled pork, the background microflora had no impact on the growth parameters of L. monocytogenes, except for the lag phase at low temperature storage. The microbial predictive models developed in this study can be used to predict the growth of L. monocytogenes during natural spoilage, and construct quantitative risk assessments in chilled pork. SIGNIFICANCE AND IMPACT OF THE STUDY This study simulated the actual growth of Listeria monocytogenes in chilled pork to the maximum extent, and described its growth characteristics of L. monocytogenes during natural spoilage. This study showed that the background microflora had no impact on the growth parameters of L. monocytogenes, except for the lag phase at low temperature storage. The models developed in this study can be used to predict the growth of L. monocytogenes during refrigerated storage.
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Affiliation(s)
- K Ye
- Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control, Nanjing Agricultural University, Nanjing, China
| | - K Wang
- Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control, Nanjing Agricultural University, Nanjing, China
| | - M Liu
- Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control, Nanjing Agricultural University, Nanjing, China
| | - J Liu
- Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control, Nanjing Agricultural University, Nanjing, China
| | - L Zhu
- Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control, Nanjing Agricultural University, Nanjing, China
| | - G Zhou
- Jiangsu Collaborative Innovation Center of Meat Production and Processing, Quality and Safety Control, Nanjing Agricultural University, Nanjing, China
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Luo L, Zhang Z, Wang H, Wang P, Lan R, Deng J, Miao Y, Wang Y, Wang Y, Xu J, Zhang L, Sun S, Liu X, Zhou Y, Chen X, Li Q, Ye C. A 12-month longitudinal study of Listeria monocytogenes contamination and persistence in pork retail markets in China. Food Control 2017. [DOI: 10.1016/j.foodcont.2016.12.037] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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15
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Du XJ, Zhang X, Wang XY, Su YL, Li P, Wang S. Isolation and characterization of Listeria monocytogenes in Chinese food obtained from the central area of China. Food Control 2017. [DOI: 10.1016/j.foodcont.2016.11.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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16
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Henriques AR, Cristino JM, Fraqueza MJ. Genetic Characterization of Listeria monocytogenes Isolates from Industrial and Retail Ready-to-Eat Meat-Based Foods and Their Relationship with Clinical Strains from Human Listeriosis in Portugal. J Food Prot 2017; 80:551-560. [PMID: 28272920 DOI: 10.4315/0362-028x.jfp-16-310] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Listeria monocytogenes isolates (n = 81) recovered from ready-to-eat meat-based food products (RTEMP) collected in industrial processing plants and retail establishments were genetically characterized for comparison with those from human clinical cases of listeriosis (n = 49). The aim was to assess RTEMP as a possible food source for human infection. L. monocytogenes was detected in 12.5% of the RTEMP samples, and in some cases, counts were above the European food safety criteria. All isolates were assessed by multiplex PCR for serogroup determination and detection of virulence-associated genes inlA, inlB, inlC, inlJ, plcA, hlyA, actA, and iap. Serogroups IIb and IVb dominated in RTEMP and human isolates, and all were positive for the assessed virulence genes. Antibiotic susceptibility testing by the disk diffusion method revealed a low level of resistance among the isolates. Pulsed-field gel electrophoresis (PFGE) of L. monocytogenes isolates, using restriction enzymes ApaI and AscI, revealed genetic variability and differentiated the isolates in five clusters. Although some pulsed-field gel electrophoresis profiles of particular RTEMP and human isolates seemed to be highly related, exhibiting more than 90% similarity, which suggests a possible common source, in most cases the strains were not genetically or temporally matched. The close genetic relatedness of RTEMP and human listeriosis strains stressed the importance of preventive measure implementation throughout the food chain.
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Affiliation(s)
- A R Henriques
- Centro de Investigação Interdisciplinar em Sanidade Animal, Faculdade de Medicina Veterinária, Universidade de Lisboa, Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal
| | - J Melo Cristino
- Instituto de Medicina Molecular, Centro Hospitalar de Lisboa Norte, Faculdade de Medicina, Universidade de Lisboa, Avenida Professor Egas Moniz, 1649-028 Lisboa, Portugal
| | - M J Fraqueza
- Centro de Investigação Interdisciplinar em Sanidade Animal, Faculdade de Medicina Veterinária, Universidade de Lisboa, Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal
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Wang C, Yang J, Zhu X, Lu Y, Xue Y, Lu Z. Effects of Salmonella bacteriophage, nisin and potassium sorbate and their combination on safety and shelf life of fresh chilled pork. Food Control 2017. [DOI: 10.1016/j.foodcont.2016.09.034] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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18
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Liu Z, Meng R, Zhao X, Shi C, Zhang X, Zhang Y, Guo N. Inhibition effect of tea tree oil onListeria monocytogenesgrowth and exotoxin proteins listeriolysin O and p60 secretion. Lett Appl Microbiol 2016; 63:450-457. [DOI: 10.1111/lam.12666] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 06/29/2016] [Accepted: 09/01/2016] [Indexed: 12/18/2022]
Affiliation(s)
- Z. Liu
- Department of Food Quality and Safety; College of Food Science and Engineering; Jilin University; Changchun China
| | - R. Meng
- Jilin Enrty-exit Inspection And Quarantine Bureau; Changchun China
| | - X. Zhao
- Department of Food Quality and Safety; College of Food Science and Engineering; Jilin University; Changchun China
| | - C. Shi
- Department of Food Quality and Safety; College of Food Science and Engineering; Jilin University; Changchun China
| | - X. Zhang
- Department of Food Quality and Safety; College of Food Science and Engineering; Jilin University; Changchun China
| | - Y. Zhang
- Department of Food Quality and Safety; College of Food Science and Engineering; Jilin University; Changchun China
| | - N. Guo
- Department of Food Quality and Safety; College of Food Science and Engineering; Jilin University; Changchun China
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A Rapid and Sensitive Method for Simultaneous Screening of Nine Foodborne Pathogens Using High-Performance Liquid Chromatography Assay. FOOD ANAL METHOD 2016. [DOI: 10.1007/s12161-016-0672-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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