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Niu Y, Li W, Xu B, Chen W, Qi X, Zhou Y, Fu P, Ma X, Guo Y. Risk factors associated with food consumption and food-handling habits for sporadic listeriosis: a case-control study in China from 2013 to 2022. Emerg Microbes Infect 2024; 13:2307520. [PMID: 38341870 PMCID: PMC10860432 DOI: 10.1080/22221751.2024.2307520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 01/16/2024] [Indexed: 02/13/2024]
Abstract
The prevalence of listeriosis in China has been increasing in recent years. Listeriosis primarily spreads through contaminated food. However, the resilient causative organism, Listeria monocytogenes, and its extended incubation period pose challenges in identifying risk factors associated with food consumption and food-handling habits. This study aimed to identify the risk factors associated with food consumption and food-handling habits for listeriosis in China. A matched case-control study (1:1 ratio) was conducted, which enrolled all eligible cases of listeriosis between 1 January 2013 and 31 December 2022 in China. Basic information and possible risk factors associated with food consumption and food-handling habits were collected. Overall, 359 patients were enrolled, including 208 perinatal and 151 non-perinatal cases. Univariate and multivariable logistic analyzes were performed for the perinatal group. For the perinatal and non-perinatal groups, ice cream and Chinese cold dishes were the high-risk foods for listeriosis (odds ratio (OR) 2.09 95% confidence interval (CI): 1.23-3.55; OR 3.17 95% CI: 1.29-7.81), respectively; consumption of leftovers and pet ownership were the high-risk food-handling habits (OR 1.92 95% CI: 1.03-3.59; OR 3.00 95% CI: 1.11-8.11), respectively. In both groups, separation of raw and cooked foods was a protective factor (OR 0.27 95% CI: 0.14-0.51; OR 0.35 95% CI: 0.14-0.89), while refrigerator cleaning reduced the infection risk by 64.94-70.41% only in the perinatal group. The identification of high-risk foods and food-handling habits for listeriosis is important for improving food safety guidelines for vulnerable populations.
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Affiliation(s)
- Yanlin Niu
- Beijing Center for Disease Prevention and Control, Beijing, People’s Republic of China
| | - Weiwei Li
- National Health Commission Key Laboratory of Food Safety Risk Assessment, Chinese Academy of Medical Science Research Unit (No.2019RU014), China National Center for Food Safety Risk Assessment, Beijing, People’s Republic of China
| | - Biyao Xu
- Shanghai Municipal Center for Disease Control and Prevention, Shanghai, People’s Republic of China
| | - Wen Chen
- Sichuan Center for Disease Control and Prevention, Chengdu, People’s Republic of China
| | - Xiaojuan Qi
- Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, People’s Republic of China
| | - Yijing Zhou
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, People’s Republic of China
| | - Ping Fu
- National Health Commission Key Laboratory of Food Safety Risk Assessment, Chinese Academy of Medical Science Research Unit (No.2019RU014), China National Center for Food Safety Risk Assessment, Beijing, People’s Republic of China
| | - Xiaochen Ma
- Beijing Center for Disease Prevention and Control, Beijing, People’s Republic of China
| | - Yunchang Guo
- National Health Commission Key Laboratory of Food Safety Risk Assessment, Chinese Academy of Medical Science Research Unit (No.2019RU014), China National Center for Food Safety Risk Assessment, Beijing, People’s Republic of China
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2
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Cong Z, Xiong Y, Lyu L, Fu B, Guo D, Sha Z, Yang B, Wu H. The relationship between Listeria infections and host immune responses: Listeriolysin O as a potential target. Biomed Pharmacother 2024; 171:116129. [PMID: 38194738 DOI: 10.1016/j.biopha.2024.116129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Revised: 12/31/2023] [Accepted: 01/02/2024] [Indexed: 01/11/2024] Open
Abstract
Listeria monocytogenes (Lm), a foodborne bacterium, can infect people and has a high fatality rate in immunocompromised individuals. Listeriolysin O (LLO), the primary virulence factor of Lm, is critical in regulating the pathogenicity of Lm. This review concludes that LLO may either directly or indirectly activate a number of host cell viral pathophysiology processes, such as apoptosis, pyroptosis, autophagy, necrosis and necroptosis. We describe the invasion of host cells by Lm and the subsequent removal of Lm by CD8 T cells and CD4 T cells upon receipt of the LLO epitopes from major histocompatibility complex class I (MHC-I) and major histocompatibility complex class II (MHC-II). The development of several LLO-based vaccines that make use of the pore-forming capabilities of LLO and the immune response of the host cells is then described. Finally, we conclude by outlining the several natural substances that have been shown to alter the three-dimensional conformation of LLO by binding to particular amino acid residues of LLO, which reduces LLO pathogenicity and may be a possible pharmacological treatment for Lm.
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Affiliation(s)
- Zixuan Cong
- School of Life Sciences, Chongqing University, Chongqing 401331, China
| | - Yan Xiong
- School of Life Sciences, Chongqing University, Chongqing 401331, China
| | - Lyu Lyu
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu 730046, China
| | - Beibei Fu
- School of Life Sciences, Chongqing University, Chongqing 401331, China
| | - Dong Guo
- School of Life Sciences, Chongqing University, Chongqing 401331, China
| | - Zhou Sha
- School of Life Sciences, Chongqing University, Chongqing 401331, China
| | - Bo Yang
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu 730046, China.
| | - Haibo Wu
- School of Life Sciences, Chongqing University, Chongqing 401331, China.
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3
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Dinçer E. Impact of lactic acid bacteria strains against Listeria monocytogenes biofilms on various food-contact surfaces. Arch Microbiol 2024; 206:80. [PMID: 38291270 DOI: 10.1007/s00203-023-03811-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 12/21/2023] [Indexed: 02/01/2024]
Abstract
Listeria monocytogenes is one of the most important foodborne pathogens, causing listeriosis, a disease characterized by high mortality rates. This microorganism, commonly found in food production environments and transmitted to humans by consuming contaminated food, has the ability to form biofilms by attaching to a wide variety of surfaces. Traditional hygiene and sanitation procedures are not effective enough to completely remove L. monocytogenes biofilms from food-contact surfaces, which makes them a persistent threat to food safety. Alternative approaches to combating Listeria biofilms are needed, and the use of lactic acid bacteria (LAB) and their antimicrobial compounds shows promise. The present study investigated the effect of Lactobacillus strains, previously isolated from various foods and known to possess antimicrobial properties, on the biofilm formation of L. monocytogenes on three different food-contact surfaces. To study L. monocytogenes IVb ATCC 19115 type, culture was preferred to represent serotype IVb, which is responsible for the vast majority of listeriosis cases. The results demonstrated that cell-free supernatants (CFSs) of LAB strains inhibited biofilm formation by up to 51.57% on polystyrene, 60.96% on stainless steel, and 30.99% on glass surfaces. Moreover, these CFSs were effective in eradicating mature biofilms, with reductions of up to 78.86% on polystyrene, 73.12% on stainless steel, and 72.63% on glass surfaces. The strong inhibition rates of one strain of L. curvatus (P3X) and two strains of L. sakei (8.P1, 28.P2) used in the present study imply that they may provide an alternate technique for managing Listeria biofilms in food production environments.
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Affiliation(s)
- Emine Dinçer
- Department of Nutrition and Dietetics, Faculty of Health Science, Sivas Cumhuriyet University, 58140, Sivas, Turkey.
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4
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Chowdhury B, Anand S. Environmental persistence of Listeria monocytogenes and its implications in dairy processing plants. Compr Rev Food Sci Food Saf 2023; 22:4573-4599. [PMID: 37680027 DOI: 10.1111/1541-4337.13234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 07/10/2023] [Accepted: 08/09/2023] [Indexed: 09/09/2023]
Abstract
Listeriosis, an invasive illness with a fatality rate between 20% and 30%, is caused by the ubiquitous bacterium Listeria monocytogenes. Human listeriosis has long been associated with foods. This is because the ubiquitous nature of the bacteria renders it a common food contaminant, posing a significant risk to the food processing sector. Although several sophisticated stress coping mechanisms have been identified as significant contributing factors toward the pathogen's persistence, a complete understanding of the mechanisms underlying persistence across various strains remains limited. Moreover, aside from genetic aspects that promote the ability to cope with stress, various environmental factors that exist in food manufacturing plants could also contribute to the persistence of the pathogen. The objective of this review is to provide insight into the challenges faced by the dairy industry because of the pathogens' environmental persistence. Additionally, it also aims to emphasize the diverse adaptation and response mechanisms utilized by L. monocytogenes in food manufacturing plants to evade environmental stressors. The persistence of L. monocytogenes in the food processing environment poses a serious threat to food safety and public health. The emergence of areas with high levels of L. monocytogenes contamination could facilitate Listeria transmission through aerosols, potentially leading to the recontamination of food, particularly from floors and drains, when sanitation is implemented alongside product manufacturing. Hence, to produce safe dairy products and reduce the frequency of outbreaks of listeriosis, it is crucial to understand the factors that contribute to the persistence of this pathogen and to implement efficient control strategies.
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Affiliation(s)
- Bhaswati Chowdhury
- Department of Dairy and Food Science, South Dakota State University, Brookings, South Dakota, USA
| | - Sanjeev Anand
- Department of Dairy and Food Science, South Dakota State University, Brookings, South Dakota, USA
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5
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Yan H, Wu M, Dong Q, Li Z. [Advances in in vitro and in vivo models for Listeria monocytogenes placental infection]. Sheng Wu Gong Cheng Xue Bao 2023; 39:3985-4003. [PMID: 37877386 DOI: 10.13345/j.cjb.230263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
Listeria monocytogenes is recognized as a significant foodborne pathogen, capable of causing listeriosis in humans, which is a global public health concern. This pathogen is particularly dangerous for pregnant women, as it can lead to invasive listeriosis in fetuses and neonates, posing a significant threat to both maternal and fetal health. Therefore, establishing suitable in vitro and in vivo models for L. monocytogenes placenta infection, as well as analyzing and exploring the infection process and its pathogenic mechanism, are important approaches to prevent and control L. monocytogenes infection in mothers and infants. In this study, we reviewed the in vitro and in vivo placental models used for studying the infection of L. monocytogenes in maternal and infant, summarized and discussed the advantages and limitations of each model, and explored the potential of in vitro cell models and organoids for the study of L. monocytogenes infection. This paper aims to support the study of the infection pathway and pathogenesis of listeriosis and provide scientific references for the prevention and control of L. monocytogenes infection.
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Affiliation(s)
- Hui Yan
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Mengjie Wu
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Qingli Dong
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Zhuosi Li
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
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6
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Vidovic S, Paturi G, Gupta S, Fletcher GC. Lifestyle of Listeria monocytogenes and food safety: Emerging listericidal technologies in the food industry. Crit Rev Food Sci Nutr 2022; 64:1817-1835. [PMID: 36062812 DOI: 10.1080/10408398.2022.2119205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Listeria monocytogenes, a causative agent of listeriosis, is a major foodborne pathogen. Among pathogens, L. monocytogenes stands out for its unique ecological and physiological characteristics. This distinct lifestyle of L. monocytogenes has a significant impact on food safety and public health, mainly through the ability of this pathogen to multiply at refrigeration temperature and to persist in the food processing environment. Due to a combination of these characteristics and emerging trends in consumer preference for ready-to-eat and minimally processed food, there is a need to develop effective and sustainable approaches to control contamination of food products with L. monocytogenes. Implementation of an efficient and reliable control strategy for L. monocytogenes must first address the problem of cross-contamination. Besides the preventive control strategies, cross-contamination may be addressed with the introduction of emerging post packaging non-thermal or thermal hurdles that can ensure delivery of a listericidal step in a packed product without interfering with the organoleptic characteristics of a food product. This review aims to present the most relevant findings underlying the distinct lifestyle of L. monocytogenes and its impact on food safety. We also discuss emerging food decontamination technologies that can be used to better control L. monocytogenes.
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Affiliation(s)
- Sinisa Vidovic
- Food Safety Preservation Team, The New Zealand Institute for Plant and Food Research Limited, Auckland, New Zealand
| | - Gunaranjan Paturi
- Food Safety Preservation Team, The New Zealand Institute for Plant and Food Research Limited, Auckland, New Zealand
| | - Sravani Gupta
- Food Safety Preservation Team, The New Zealand Institute for Plant and Food Research Limited, Auckland, New Zealand
| | - Graham C Fletcher
- Food Safety Preservation Team, The New Zealand Institute for Plant and Food Research Limited, Auckland, New Zealand
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7
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Erickson JJ, Archer-Hartmann S, Yarawsky AE, Miller JLC, Seveau S, Shao TY, Severance AL, Miller-Handley H, Wu Y, Pham G, Wasik BR, Parrish CR, Hu YC, Lau JTY, Azadi P, Herr AB, Way SS. Pregnancy enables antibody protection against intracellular infection. Nature 2022; 606:769-775. [PMID: 35676476 PMCID: PMC9233044 DOI: 10.1038/s41586-022-04816-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Accepted: 04/27/2022] [Indexed: 12/17/2022]
Abstract
Adaptive immune components are thought to exert non-overlapping roles in antimicrobial host defence, with antibodies targeting pathogens in the extracellular environment and T cells eliminating infection inside cells1,2. Reliance on antibodies for vertically transferred immunity from mothers to babies may explain neonatal susceptibility to intracellular infections3,4. Here we show that pregnancy-induced post-translational antibody modification enables protection against the prototypical intracellular pathogen Listeria monocytogenes. Infection susceptibility was reversed in neonatal mice born to preconceptually primed mothers possessing L. monocytogenes-specific IgG or after passive transfer of antibodies from primed pregnant, but not virgin, mice. Although maternal B cells were essential for producing IgGs that mediate vertically transferred protection, they were dispensable for antibody acquisition of protective function, which instead required sialic acid acetyl esterase5 to deacetylate terminal sialic acid residues on IgG variable-region N-linked glycans. Deacetylated L. monocytogenes-specific IgG protected neonates through the sialic acid receptor CD226,7, which suppressed IL-10 production by B cells leading to antibody-mediated protection. Consideration of the maternal-fetal dyad as a joined immunological unit reveals protective roles for antibodies against intracellular infection and fine-tuned adaptations to enhance host defence during pregnancy and early life.
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Affiliation(s)
- John J Erickson
- Department of Pediatrics, Division of Infectious Diseases, Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center, University of Cincinnati School of Medicine, Cincinnati, OH, USA
- Department of Pediatrics, Division of Neonatology, Cincinnati Children's Hospital Medical Center, University of Cincinnati School of Medicine, Cincinnati, OH, USA
| | | | - Alexander E Yarawsky
- Department of Pediatrics, Division of Immunobiology, Cincinnati Children's Hospital Medical Center, University of Cincinnati School of Medicine, Cincinnati, OH, USA
| | - Jeanette L C Miller
- Department of Pediatrics, Division of Immunobiology, Cincinnati Children's Hospital Medical Center, University of Cincinnati School of Medicine, Cincinnati, OH, USA
| | - Stephanie Seveau
- Department of Microbial Infection and Immunity, Ohio State University, Columbus, OH, USA
| | - Tzu-Yu Shao
- Department of Pediatrics, Division of Infectious Diseases, Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center, University of Cincinnati School of Medicine, Cincinnati, OH, USA
| | - Ashley L Severance
- Department of Pediatrics, Division of Infectious Diseases, Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center, University of Cincinnati School of Medicine, Cincinnati, OH, USA
| | - Hilary Miller-Handley
- Department of Pediatrics, Division of Infectious Diseases, Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center, University of Cincinnati School of Medicine, Cincinnati, OH, USA
- Department of Internal Medicine, Division of Infectious Diseases, University of Cincinnati School of Medicine, Cincinnati, OH, USA
| | - Yuehong Wu
- Department of Pediatrics, Division of Infectious Diseases, Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center, University of Cincinnati School of Medicine, Cincinnati, OH, USA
| | - Giang Pham
- Department of Pediatrics, Division of Infectious Diseases, Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center, University of Cincinnati School of Medicine, Cincinnati, OH, USA
| | - Brian R Wasik
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
| | - Colin R Parrish
- Department of Microbiology and Immunology, College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
| | - Yueh-Chiang Hu
- Department of Pediatrics, Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, University of Cincinnati School of Medicine, Cincinnati, OH, USA
| | - Joseph T Y Lau
- Department of Molecular and Cell Biology, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA
| | - Parastoo Azadi
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA, USA
| | - Andrew B Herr
- Department of Pediatrics, Division of Immunobiology, Cincinnati Children's Hospital Medical Center, University of Cincinnati School of Medicine, Cincinnati, OH, USA
| | - Sing Sing Way
- Department of Pediatrics, Division of Infectious Diseases, Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center, University of Cincinnati School of Medicine, Cincinnati, OH, USA.
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8
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Chukwu CW, Nyabadza F, Fatmawati F. Modelling the potential role of media campaigns on the control of Listeriosis. Math Biosci Eng 2021; 18:7580-7601. [PMID: 34814264 DOI: 10.3934/mbe.2021375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Human Listeria infection is a food-borne disease caused by the consumption of contaminated food products by the bacterial pathogen, Listeria. In this paper, we propose a mathematical model to analyze the impact of media campaigns on the spread and control of Listeriosis. The model exhibited three equilibria namely; disease-free, Listeria-free and endemic equilibria. The food contamination threshold is determined and the local stability analyses of the model is discussed. Sensitivity analysis is done to determine the model parameters that most affect the severity of the disease. Numerical simulations were carried out to assess the role of media campaigns on the Listeriosis spread. The results show that; an increase in the intensity of the media awareness campaigns, the removal rate of contaminated food products, a decrease in the contact rate of Listeria by humans results in fewer humans getting infected, thus leading to the disease eradication. An increase in the depletion of media awareness campaigns results in more humans being infected with Listeriosis. These findings may significantly impact policy and decision-making in the control of Listeriosis disease.
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Affiliation(s)
- C W Chukwu
- Department of Mathematics and Applied Mathematics, University of Johannesburg, Auckland Park Kingsway Campus, Johannesburg P. O. Box 524, 2006, South Africa
- Postdoc Fellow Department of Mathematics, Faculty of Science and Technology, Universitas Airlangga, Surabaya 60115, Indonesia
| | - F Nyabadza
- Department of Mathematics and Applied Mathematics, University of Johannesburg, Auckland Park Kingsway Campus, Johannesburg P. O. Box 524, 2006, South Africa
| | - Fatmawati Fatmawati
- Department of Mathematics, Faculty of Science and Technology, Universitas Airlangga, Surabaya 60115, Indonesia
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Girma L, Geteneh A, Amenu D, Kassa T. Isolation and characterization of Listeria monocytogenes among women attending Jimma University medical center, Southwest Ethiopia. BMC Infect Dis 2021; 21:564. [PMID: 34118865 PMCID: PMC8199527 DOI: 10.1186/s12879-021-06254-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 05/26/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Listeria monocytogenes (LM) has come to be a major public health issue of at-risk groups, causing high morbidity and mortality. Despite this data, studies are very limited in developing countries like Ethiopia. Thus, we aimed to isolate and characterize LM in terms of antibiogram and biofilm formation among pregnant women with fever, women with a history of spontaneous abortion, women with a history of fetal loss, and women with preterm delivery at Jimma University Medical Center (JUMC), southwest Ethiopia. METHODS A cross-sectional study was done among 144 women from June to August 2019. Isolates were tested for antibiotic susceptibility and biofilm formation using disc diffusion and microtiter plate method, respectively. Data were collected using a structured questionnaire, entered into Epidata 3.1 and logistic regression was done by SPSS v25.0. RESULTS LM was isolated in 8 (5.56%) of 144 screened women. The isolation rate of LM was relatively higher among women with a history of fetal loss (9.7%), followed by women with preterm delivery (6.25%). One of the six cord blood was positive for LM, indicating that the transplacental transmission rate at JUMC was 16.7%. More than 2% of women with an ongoing pregnancy were found to have LM septicemia, which could hurt their fetus. All of the isolates tested were susceptible to Ampicillin. However, all of the isolates were resistant to Penicillin and Meropenem and were biofilm producers. CONCLUSIONS The high magnitude of pregnancy-related listeriosis in the current study setting appears that implementation of educational programs targeting risk reduction and more studies to identify sources of LM are warranted. The choice of antibiotics should be after susceptibility testing.
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Affiliation(s)
- Lencho Girma
- Department of Medical Laboratory Science, Mizan Aman College of Health Sciences, Aman, Ethiopia
| | - Alene Geteneh
- Department of Medical Laboratory Science, College of Health Sciences, Woldia University, Woldia, Ethiopia
| | - Demisew Amenu
- Department of Obstetrics and Gynecology, School of Medicine, Jimma University, Jimma, Ethiopia
| | - Tesfaye Kassa
- School of Medical Laboratory Sciences, Jimma University, Jimma, Ethiopia
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10
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Drolia R, Amalaradjou MAR, Ryan V, Tenguria S, Liu D, Bai X, Xu L, Singh AK, Cox AD, Bernal-Crespo V, Schaber JA, Applegate BM, Vemulapalli R, Bhunia AK. Receptor-targeted engineered probiotics mitigate lethal Listeria infection. Nat Commun 2020; 11:6344. [PMID: 33311493 PMCID: PMC7732855 DOI: 10.1038/s41467-020-20200-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 11/18/2020] [Indexed: 12/24/2022] Open
Abstract
Probiotic bacteria reduce the intestinal colonization of pathogens. Yet, their use in preventing fatal infection caused by foodborne Listeria monocytogenes (Lm), is inconsistent. Here, we bioengineered Lactobacillus probiotics (BLP) to express the Listeria adhesion protein (LAP) from a non-pathogenic Listeria (L. innocua) and a pathogenic Listeria (Lm) on the surface of Lactobacillus casei. The BLP strains colonize the intestine, reduce Lm mucosal colonization and systemic dissemination, and protect mice from lethal infection. The BLP competitively excludes Lm by occupying the surface presented LAP receptor, heat shock protein 60 and ameliorates the Lm-induced intestinal barrier dysfunction by blocking the nuclear factor-κB and myosin light chain kinase-mediated redistribution of the major epithelial junctional proteins. Additionally, the BLP increases intestinal immunomodulatory functions by recruiting FOXP3+T cells, CD11c+ dendritic cells and natural killer cells. Engineering a probiotic strain with an adhesion protein from a non-pathogenic bacterium provides a new paradigm to exclude pathogens and amplify their inherent health benefits.
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Affiliation(s)
- Rishi Drolia
- Molecular Food Microbiology Laboratory, Department of Food Science, Purdue University, West Lafayette, IN, USA
- Purdue Institute of Inflammation, Immunology and Infectious Disease, Purdue University, West Lafayette, IN, USA
| | - Mary Anne Roshni Amalaradjou
- Molecular Food Microbiology Laboratory, Department of Food Science, Purdue University, West Lafayette, IN, USA
- Department of Animal Science, University of Connecticut, Storrs, CT, USA
| | - Valerie Ryan
- Molecular Food Microbiology Laboratory, Department of Food Science, Purdue University, West Lafayette, IN, USA
| | - Shivendra Tenguria
- Molecular Food Microbiology Laboratory, Department of Food Science, Purdue University, West Lafayette, IN, USA
- Purdue Institute of Inflammation, Immunology and Infectious Disease, Purdue University, West Lafayette, IN, USA
| | - Dongqi Liu
- Molecular Food Microbiology Laboratory, Department of Food Science, Purdue University, West Lafayette, IN, USA
- Purdue Institute of Inflammation, Immunology and Infectious Disease, Purdue University, West Lafayette, IN, USA
| | - Xingjian Bai
- Molecular Food Microbiology Laboratory, Department of Food Science, Purdue University, West Lafayette, IN, USA
| | - Luping Xu
- Molecular Food Microbiology Laboratory, Department of Food Science, Purdue University, West Lafayette, IN, USA
| | - Atul K Singh
- Molecular Food Microbiology Laboratory, Department of Food Science, Purdue University, West Lafayette, IN, USA
| | - Abigail D Cox
- Department of Comparative Pathobiology, Purdue University, West Lafayette, IN, USA
| | - Victor Bernal-Crespo
- Department of Comparative Pathobiology, Purdue University, West Lafayette, IN, USA
| | - James A Schaber
- Bindley Bioscience Research Center, Purdue University, West Lafayette, IN, USA
| | - Bruce M Applegate
- Molecular Food Microbiology Laboratory, Department of Food Science, Purdue University, West Lafayette, IN, USA
- Purdue University Interdisciplinary Life Science Program, Purdue University, West Lafayette, IN, USA
| | - Ramesh Vemulapalli
- Department of Comparative Pathobiology, Purdue University, West Lafayette, IN, USA
- Department of Veterinary Pathobiology, Texas A&M University, College Station, TX, USA
| | - Arun K Bhunia
- Molecular Food Microbiology Laboratory, Department of Food Science, Purdue University, West Lafayette, IN, USA.
- Purdue Institute of Inflammation, Immunology and Infectious Disease, Purdue University, West Lafayette, IN, USA.
- Department of Comparative Pathobiology, Purdue University, West Lafayette, IN, USA.
- Purdue University Interdisciplinary Life Science Program, Purdue University, West Lafayette, IN, USA.
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11
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Chrétien R, Voide C, Bally F. [Outbreak of listeriosis in Valais, 2020: review of causes of food contamination.]. Rev Med Suisse 2020; 16:1926-1931. [PMID: 33058579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Listeria monocytogenes, a gram-positive bacterium, is the cause of Listeriosis. Its mortality is currently the highest for food borne diseases. Affected are mainly elderly or immunocompromised patients, as well as pregnant women. Despite food hygiene measures and surveillance, outbreaks are possible in developed countries. In the canton of Valais, six hospitalized cases including one death occurred between end of March and the beginning of May 2020. The typing of these strains of L. monocytogenes showed a link to a larger Swiss outbreak associated with contaminated soft cheese (Brie). The outbreak ended once the producer recalled the incriminated cheese. This article describes the outbreak with a review of other outbreaks' sources and a reminder of preventive measures.
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Affiliation(s)
- Renaud Chrétien
- Service de médecine interne, Centre hospitalier du Valais romand, Hôpital du Valais, 1951 Sion
| | - Cathy Voide
- Service des maladies infectieuses, Institut central des hôpitaux, Hôpital du Valais, 1951 Sion
| | - Frank Bally
- Service des maladies infectieuses, Institut central des hôpitaux, Hôpital du Valais, 1951 Sion
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12
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Deng Q, Shi H, Luo Y, Zhao H, Liu N. Effect of dietary Lactobacilli mixture on Listeria monocytogenes infection and virulence property in broilers. Poult Sci 2020; 99:3655-3662. [PMID: 32616262 PMCID: PMC7597833 DOI: 10.1016/j.psj.2020.03.058] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Revised: 03/12/2020] [Accepted: 03/23/2020] [Indexed: 12/19/2022] Open
Abstract
The present study aimed to investigate the effect of probiotic Lactobacilli addition on Listeria monocytogenes load, inflammatory reaction, and virulence properties in broilers from 1 to 14 D of age. A total of 480 broiler chicks were randomly allocated to 4 treatments of 6 replicates each. All birds were infected with L. monocytogenes on the first day and supplemented an equal amount mixture of Lactobacillus acidophilus and Lactobacillus plantarum at doses of 0 (control), 106, 108, 1010 cfu/kg of diet. The results showed that on 7 and 14 D after administration, Lactobacilli addition at the 3 doses decreased (P < 0.05) L. monocytogenes loads in the cecum, skin, liver, and spleen by 0.065 to 0.933 log10 cfu, and the pathogen linearly reduced (P ≤ 0.015) with the increasing doses of probiotics in the skin. Serum cytokines including IL-1β, IL-6, tumor necrosis factor-α, and interferon-γ in probiotics treatments were decreased (P < 0.05) by 25.4 to 51.1%. Transcriptional levels of genes related to anti-inflammatory reactions including IL-10, hypoxia inducible factor 1 alpha (HIF1A), prostaglandin E receptor 2, and prostaglandin-endoperoxide synthase 2 in the intestinal mucosa were upregulated (P < 0.05) in Lactobacilli treatments, and linear and quadratic responses (P ≤ 0.019) were found on HIF1A. Furthermore, the probiotics attenuated (P < 0.05) listerial adhesion, pore-forming, and invasion properties by downregulating autolysin Ami, listeriolysin O, internalin A and B, and a linear (P = 0.006) dose response of probiotics was exhibited on flagellin. The findings indicate that dietary coadministration of L. acidophilus and L. plantarum can attenuate L. monocytogenes infection by depressing its intestinal inoculation, translocation, inflammatory reaction, and virulence property in broilers and suggest that the probiotics can be an alternative against listerial infection in broilers.
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Affiliation(s)
- Qingqing Deng
- Department of Animal Production, Henan University of Science and Technology, Luoyang 471023, China
| | - Hanyi Shi
- Department of Poultry Science, University of Georgia, Athens, GA 30602, USA
| | - Yiran Luo
- Department of Animal Production, Henan University of Science and Technology, Luoyang 471023, China
| | - Heping Zhao
- Department of Animal Production, Henan University of Science and Technology, Luoyang 471023, China
| | - Ning Liu
- Department of Animal Production, Henan University of Science and Technology, Luoyang 471023, China; National Engineering Research Center of Biological Feed, Beijing 100008, China.
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13
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Krijthe BP, Hermans MAW, Schurink CAM, van Daele PLA. Listeria infection in patients using anti-TNFα treatment: Should there be preventive strategies? Eur J Intern Med 2019; 68:e15-e16. [PMID: 31395466 DOI: 10.1016/j.ejim.2019.07.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 07/29/2019] [Indexed: 11/30/2022]
Affiliation(s)
- Bouwe P Krijthe
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands.
| | - Maud A W Hermans
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Carolina A M Schurink
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands; Department of Medical Microbiology and Infectious Diseases, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Paul L A van Daele
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
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14
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Kalani BS, Najafi M, Mohammadzadeh R, Razavi S, Ohadi E, Irajian G. Targeting Listeria monocytogenes consensus sequence of internalin genes using an antisense molecule. Microb Pathog 2019; 136:103689. [PMID: 31445122 DOI: 10.1016/j.micpath.2019.103689] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 08/17/2019] [Accepted: 08/21/2019] [Indexed: 12/20/2022]
Abstract
As an intracellular pathogen, Listeria monocytogenes can enter host cells where it can replicate and escape detection and eradication by the host immune response making the clearance of infection very challenging. Furthermore, with the advent of antimicrobial resistance, the need for alternative targets is inevitable. Internalin proteins are crucial to this bacterium as they contribute to bacterial entry to the systemic circulation. In this study, we targeted a highly conserved region of these proteins by an antisense sequence that was covalently conjugated to the cell penetrating peptides (CPP) to overcome the challenging delivery barriers. Then, we evaluated the efficiency of this construct in vitro. We also assessed the antigenicity, cytotoxicity, and probability of apoptosis induction by this construct. The studied CPP-PNA inhibited bacterial growth and suppressed the mRNA expression of internalins in a dose-dependent manner. In addition, at all studied concentrations, CPP-PNA significantly reduced the invasion rate of L. monocytogenes in the examined cell lines. Moreover, different concentrations of CPP-PNA did not have a significant antigenic, cytotoxic, and apoptotic properties compared to the control. These results suggest the effectiveness of CPP-antisense in targeting the mRNAs of internalins for various research, therapeutic and preventive purposes. However, additional research is required to evaluate the potency, safety, and pharmacokinetics of this compound for the prevention and treatment of listeriosis.
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Affiliation(s)
- Behrooz Sadeghi Kalani
- Microbial Biotechnology Research Center, Iran University of Medical Sciences, Tehran, Iran; Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mohammad Najafi
- Department of Biochemistry, Iran University of Medical Sciences, Tehran, Iran
| | - Rokhsareh Mohammadzadeh
- Microbial Biotechnology Research Center, Iran University of Medical Sciences, Tehran, Iran; Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Shabnam Razavi
- Microbial Biotechnology Research Center, Iran University of Medical Sciences, Tehran, Iran; Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Elnaz Ohadi
- Microbial Biotechnology Research Center, Iran University of Medical Sciences, Tehran, Iran; Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Gholamreza Irajian
- Microbial Biotechnology Research Center, Iran University of Medical Sciences, Tehran, Iran; Department of Microbiology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.
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15
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Basit I, Crowley D, Geary M, Kirkham C, Mc Dermott R, Cafferkey M, Sayers G. Awareness and Preventative Behaviours Regarding Toxoplasma, Listeria and Cytomegalovirus Among Pregnant Women. Ir Med J 2019; 112:947. [PMID: 31535836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Aim Infection with toxoplasma, listeria and cytomegalovirus (CMV) infections can negatively affect pregnancy outcomes. Awareness of these infections, knowledge of preventive practices and pertinent behaviours was assessed. Methods A survey of patients at antenatal clinics in a Dublin maternity hospital was conducted over a six month period. Analysis was undertaken using SPSS. Results The response rate was 36% (287/800). One in two respondents were aware of toxoplasma, one in four of Listeria but only 1 in 10 of CMV. Overall, knowledge was highest among older, more educated pregnant women. Nativity had a significant effect on knowledge and behaviour, but increasing parity did not. However the majority practised key safe behaviours. Conclusion Information must be conveyed to pregnant women in a user friendly format and in a culturally sensitive way.
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Affiliation(s)
- I Basit
- Rotunda Hospital, Dublin 01 P5W9
| | - D Crowley
- Department of Public Health East, Health Service Executive, Dr Steeven’s Hospital, Dublin 08 W2A8
| | - M Geary
- Rotunda Hospital, Dublin 01 P5W9
| | | | - R Mc Dermott
- Department of Public Health East, Health Service Executive, Dr Steeven’s Hospital, Dublin 08 W2A8
| | - M Cafferkey
- Rotunda Hospital, Dublin 01 P5W9
- Department of Clinical Microbiology, Royal College of Surgeons in Ireland, Dublin 02 VN51
| | - G Sayers
- Health Intelligence, Strategic Planning and Transformation, Health Service Executive, Dr Steevens Hospital, Dublin 08 W2A8
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Sai K, Parsons C, House JS, Kathariou S, Ninomiya-Tsuji J. Necroptosis mediators RIPK3 and MLKL suppress intracellular Listeria replication independently of host cell killing. J Cell Biol 2019; 218:1994-2005. [PMID: 30975711 PMCID: PMC6548127 DOI: 10.1083/jcb.201810014] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 02/27/2019] [Accepted: 03/21/2019] [Indexed: 01/10/2023] Open
Abstract
RIPK3, a key mediator of necroptosis, has been implicated in the host defense against viral infection primary in immune cells. However, gene expression analysis revealed that RIPK3 is abundantly expressed not only in immune organs but also in the gastrointestinal tract, particularly in the small intestine. We found that orally inoculated Listeria monocytogenes, a bacterial foodborne pathogen, efficiently spread and caused systemic infection in Ripk3-deficient mice while almost no dissemination was observed in wild-type mice. Listeria infection activated the RIPK3-MLKL pathway in cultured cells, which resulted in suppression of intracellular replication of Listeria Surprisingly, Listeria infection-induced phosphorylation of MLKL did not result in host cell killing. We found that MLKL directly binds to Listeria and inhibits their replication in the cytosol. Our findings have revealed a novel functional role of the RIPK3-MLKL pathway in nonimmune cell-derived host defense against Listeria invasion, which is mediated through cell death-independent mechanisms.
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Affiliation(s)
- Kazuhito Sai
- Department of Biological Sciences, North Carolina State University, Raleigh, NC
| | - Cameron Parsons
- Department of Food, Bioprocessing, and Nutrition Sciences, North Carolina State University, Raleigh, NC
| | - John S House
- Bioinformatics Research Center, North Carolina State University, Raleigh, NC
- Center for Human Health and the Environment, North Carolina State University, Raleigh, NC
| | - Sophia Kathariou
- Department of Food, Bioprocessing, and Nutrition Sciences, North Carolina State University, Raleigh, NC
| | - Jun Ninomiya-Tsuji
- Department of Biological Sciences, North Carolina State University, Raleigh, NC
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17
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Hamilton H, Cairns G, Paul SP. Frozen food dangers. Br J Nurs 2018; 27:974. [PMID: 30235024 DOI: 10.12968/bjon.2018.27.17.974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
- Hamish Hamilton
- Year 5 medical student, University of Bristol, Torbay Hospital, Torbay
| | - George Cairns
- Year 5 medical students, University of Bristol, Consultant Paediatrician, Torbay Hospital, Torbay
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18
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Aalto-Araneda M, Korkeala H, Lundén J. Strengthening the efficacy of official food control improves Listeria monocytogenes prevention in fish-processing plants. Sci Rep 2018; 8:13105. [PMID: 30166603 PMCID: PMC6117308 DOI: 10.1038/s41598-018-31410-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Accepted: 08/14/2018] [Indexed: 11/09/2022] Open
Abstract
Vacuum-packaged cold-salted and cold-smoked fish products are considered typical vehicles for Listeria monocytogenes, the causative agent of the food-borne disease listeriosis, which is increasingly prevalent in the European Union. Efficacy of both the fish processing plant self-checking system and official food control conducted by authorities are crucial for L. monocytogenes prevention in the processing of these risky products. However, the impact of official control on L. monocytogenes prevention in the processing of fish products has not been extensively studied. We investigated the occurrence, control measures, and correction of non-compliances predisposing to L. monocytogenes in Finnish fish processing plants. The following features were associated with L. monocytogenes occurrence: (a) frequency of non-compliances concerning processing machinery, (b) recurrence of non-compliances, and (c) frequency of non-compliances for which official control measures were requested by inspecting authorities. Official control of fish processing plants had focused on risky areas, but non-compliances were common and their correction exhibited deficiencies. We conclude that L. monocytogenes prevention in fish processing can be enhanced by strengthening official food control measures and processing plant compliance. In particular, timely correction of all food safety violations must be improved.
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Affiliation(s)
- Mariella Aalto-Araneda
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66 (Agnes Sjöbergin katu 2), 00014 University of Helsinki, Helsinki, Finland.
| | - Hannu Korkeala
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66 (Agnes Sjöbergin katu 2), 00014 University of Helsinki, Helsinki, Finland
| | - Janne Lundén
- Department of Food Hygiene and Environmental Health, Faculty of Veterinary Medicine, University of Helsinki, P.O. Box 66 (Agnes Sjöbergin katu 2), 00014 University of Helsinki, Helsinki, Finland
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19
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Affiliation(s)
- Peter J Salama
- WHO Health Emergencies Programme, World Health Organization, 1211 Geneva, Switzerland
| | - Peter K Ben Embarek
- Department of Food Safety and Zoonoses, World Health Organization, 1211 Geneva, Switzerland.
| | - Jayshree Bagaria
- WHO Health Emergencies Programme, World Health Organization, 1211 Geneva, Switzerland
| | - Ibrahima S Fall
- WHO Health Emergencies Programme, World Health Organization, 1211 Geneva, Switzerland; WHO Regional Office for Africa, Brazzaville, PO BOX 06, Brazzaville, Republic of Congo
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20
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Simon K, Simon V, Rosenzweig R, Barroso R, Gillmor-Kahn M. Listeria, Then and Now: A Call to Reevaluate Patient Teaching Based on Analysis of US Federal Databases, 1998-2016. J Midwifery Womens Health 2018; 63:301-308. [PMID: 29799155 DOI: 10.1111/jmwh.12757] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Revised: 03/12/2018] [Accepted: 03/13/2018] [Indexed: 12/30/2022]
Abstract
INTRODUCTION Listeria monocytogenes is a foodborne pathogen capable of crossing the placental-fetal barrier; infection with the bacterium causes listeriosis. An exposed fetus may suffer blindness, neurological damage including meningitis, or even death. The adverse consequences of listeriosis place the infection on the federally reportable disease list. Primary prevention relies on women avoiding 6 categories of foods most likely to be contaminated with L monocytogenes, as indicated in guidelines developed by the Centers for Disease Control and Prevention (CDC), adapted by the American College of Obstetricians and Gynecologists (ACOG) in 2014, and reaffirmed without changes by ACOG in 2016. This report contains a critical evaluation of United States listeriosis prevention guidelines. METHODS Between 1998 and 2016, there were 876 identified listeriosis events documented in the illness and recall databases maintained by the CDC, Food and Drug Administration (FDA), and United States Department of Agriculture - Food Safety and Inspection Service (USDA-FSIS). Each contaminated food was manually compared to the existing listeriosis avoidance guidelines, placing each event within or outside the guidelines. Trends were analyzed over time. RESULTS Database analysis demonstrates that prior to the year 2000, abiding by the current guidelines would have prevented all reported listeriosis cases. However, in 2015 and 2016, only 5% of confirmed L monocytogenes infections originated from the 6 food groups listed in the CDC and ACOG guidelines. Similar trends emerged for food processing plant recalls (USDA-FSIS database) and grocery store recalls (FDA database). The total number of listeriosis illnesses in the United States doubled from 2007 to 2014. DISCUSSION A gradual shift in detection of L monocytogenes contamination in ready-to-eat meals, frozen foods, and ready-to-eat salads has occurred. Another emerging culprit is pasteurized dairy products. Revision of listeriosis avoidance guidelines by a consensus-seeking, multidisciplinary task force, is needed.
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Skjerdal T, Gefferth A, Spajic M, Estanga EG, de Cecare A, Vitali S, Pasquali F, Bovo F, Manfreda G, Mancusi R, Trevisiani M, Tessema GT, Fagereng T, Moen LH, Lyshaug L, Koidis A, Delgado-Pando G, Stratakos AC, Boeri M, From C, Syed H, Muccioli M, Mulazzani R, Halbert C. The STARTEC Decision Support Tool for Better Tradeoffs between Food Safety, Quality, Nutrition, and Costs in Production of Advanced Ready-to-Eat Foods. Biomed Res Int 2017; 2017:6353510. [PMID: 29457031 PMCID: PMC5804369 DOI: 10.1155/2017/6353510] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 07/20/2017] [Accepted: 08/27/2017] [Indexed: 01/20/2023]
Abstract
A prototype decision support IT-tool for the food industry was developed in the STARTEC project. Typical processes and decision steps were mapped using real life production scenarios of participating food companies manufacturing complex ready-to-eat foods. Companies looked for a more integrated approach when making food safety decisions that would align with existing HACCP systems. The tool was designed with shelf life assessments and data on safety, quality, and costs, using a pasta salad meal as a case product. The process flow chart was used as starting point, with simulation options at each process step. Key parameters like pH, water activity, costs of ingredients and salaries, and default models for calculations of Listeria monocytogenes, quality scores, and vitamin C, were placed in an interactive database. Customization of the models and settings was possible on the user-interface. The simulation module outputs were provided as detailed curves or categorized as "good"; "sufficient"; or "corrective action needed" based on threshold limit values set by the user. Possible corrective actions were suggested by the system. The tool was tested and approved by end-users based on selected ready-to-eat food products. Compared to other decision support tools, the STARTEC-tool is product-specific and multidisciplinary and includes interpretation and targeted recommendations for end-users.
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22
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Mora-Solano C, Wen Y, Han H, Chen J, Chong AS, Miller ML, Pompano RR, Collier JH. Active immunotherapy for TNF-mediated inflammation using self-assembled peptide nanofibers. Biomaterials 2017; 149:1-11. [PMID: 28982051 DOI: 10.1016/j.biomaterials.2017.09.031] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 09/18/2017] [Accepted: 09/25/2017] [Indexed: 11/18/2022]
Abstract
Active immunotherapies raising antibody responses against autologous targets are receiving increasing interest as alternatives to the administration of manufactured antibodies. The challenge in such an approach is generating protective and adjustable levels of therapeutic antibodies while at the same time avoiding strong T cell responses that could lead to autoimmune reactions. Here we demonstrate the design of an active immunotherapy against TNF-mediated inflammation using short synthetic peptides that assemble into supramolecular peptide nanofibers. Immunization with these materials, without additional adjuvants, was able to break B cell tolerance and raise protective antibody responses against autologous TNF in mice. The strength of the anti-TNF antibody response could be tuned by adjusting the epitope content in the nanofibers, and the T-cell response was focused on exogenous and non-autoreactive T-cell epitopes. Immunization with unadjuvanted peptide nanofibers was therapeutic in a lethal model of acute inflammation induced by intraperitoneally delivered lipopolysaccharide, whereas formulations adjuvanted with CpG showed comparatively poorer protection that correlated with a more Th1-polarized response. Additionally, immunization with peptide nanofibers did not diminish the ability of mice to clear infections of Listeria monocytogenes. Collectively this work suggests that synthetic self-assembled peptides can be attractive platforms for active immunotherapies against autologous targets.
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Affiliation(s)
- Carolina Mora-Solano
- Department of Surgery, University of Chicago, Chicago, IL, 60637, United States; Molecular Pathogenesis Program, University of Chicago, Chicago, IL, 60637, United States
| | - Yi Wen
- Department of Surgery, University of Chicago, Chicago, IL, 60637, United States
| | - Huifang Han
- Department of Surgery, University of Chicago, Chicago, IL, 60637, United States
| | - Jianjun Chen
- Department of Surgery, University of Chicago, Chicago, IL, 60637, United States
| | - Anita S Chong
- Department of Surgery, University of Chicago, Chicago, IL, 60637, United States
| | - Michelle L Miller
- Molecular Pathogenesis Program, University of Chicago, Chicago, IL, 60637, United States
| | - Rebecca R Pompano
- Department of Chemistry, University of Virginia, Charlottesville, VA, 22904, United States
| | - Joel H Collier
- Department of Surgery, University of Chicago, Chicago, IL, 60637, United States; Molecular Pathogenesis Program, University of Chicago, Chicago, IL, 60637, United States.
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Barkley J, Julian E, Viveiros B, Gosciminski M, Bandy U. Preventing Foodborne and Enteric Illnesses Among At-Risk Populations in the United States and Rhode Island. R I Med J (2013) 2016; 99:25-28. [PMID: 27801916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
One out of every six people in the United States is estimated to become sick each year from pathogens that can cause foodborne illness. The groups at greatest risk for serious illness, hospitalization, or death include young children, older adults, people with chronic conditions, and pregnant women. Such health disparities must be considered along with those disparities that may exist among racial and ethnic groups and among groups of varying socioeconomic status. We analyzed risk profiles for enteric disease using data from Rhode Island and the nation as a whole, exploring disparities among groups defined by demographic and health characteristics. As expected, disparities in the burden of enteric illnesses are not limited to racial or ethnic differences in disease burden, or in differences otherwise attributable to socioeconomic status. Age is an especially important determinant of risk, as is residential status. Other groups found to be especially vulnerable to foodborne and enteric illnesses in Rhode Island include pregnant women and those with certain health conditions (e.g., cancer, liver disease or immunosuppression). By understanding what groups are at increased risk, providers can more effectively counsel their patients to mitigate risk and effectively treat these conditions. [Full article available at http://rimed.org/rimedicaljournal-2016-11.asp].
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Affiliation(s)
- Jonathan Barkley
- Public Health Epidemiologist, Center for Acute Infectious Disease, Division of Preparedness, Response, Infectious Disease, and Emergency Medical Services, Rhode Island Department of Health
| | - Ernest Julian
- Chief, Center for Food Protection, Division of Environmental Health, Rhode Island Department of Health
| | - Brendalee Viveiros
- Planning and Program Specialist, Center for Food Protection, Division of Environmental Health, Rhode Island Department of Health
| | - Michael Gosciminski
- Senior Public Health Epidemiologist, Center for Acute Infectious Disease, Division of Preparedness, Response, Infectious Disease, and Emergency Medical Services, Rhode Island Department of Health
| | - Utpala Bandy
- State Epidemiologist and Medical/Director, Division of Preparedness, Response, Infectious Disease, and Emergency Medical Services, Rhode Island Department of Health
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Zoz F, Iaconelli C, Lang E, Iddir H, Guyot S, Grandvalet C, Gervais P, Beney L. Control of Relative Air Humidity as a Potential Means to Improve Hygiene on Surfaces: A Preliminary Approach with Listeria monocytogenes. PLoS One 2016; 11:e0148418. [PMID: 26840373 PMCID: PMC4739610 DOI: 10.1371/journal.pone.0148418] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Accepted: 01/18/2016] [Indexed: 12/30/2022] Open
Abstract
Relative air humidity fluctuations could potentially affect the development and persistence of pathogenic microorganisms in their environments. This study aimed to characterize the impact of relative air humidity (RH) variations on the survival of Listeria monocytogenes, a bacterium persisting on food processing plant surfaces. To assess conditions leading to the lowest survival rate, four strains of L. monocytogenes (EGDe, CCL500, CCL128, and LO28) were exposed to different RH conditions (75%, 68%, 43% and 11%) with different drying kinetics and then rehydrated either progressively or instantaneously. The main factors that affected the survival of L. monocytogenes were RH level and rehydration kinetics. Lowest survival rates between 1% and 0.001% were obtained after 3 hours of treatment under optimal conditions (68% RH and instantaneous rehydration). The survival rate was decreased under 0.001% after prolonged exposure (16h) of cells under optimal conditions. Application of two successive dehydration and rehydration cycles led to an additional decrease in survival rate. This preliminary study, performed in model conditions with L. monocytogenes, showed that controlled ambient RH fluctuations could offer new possibilities to control foodborne pathogens in food processing environments and improve food safety.
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Affiliation(s)
- Fiona Zoz
- UMR PAM Université Bourgogne-Franche-Comté / AgroSup Dijon, Dijon, France
| | - Cyril Iaconelli
- UMR PAM Université Bourgogne-Franche-Comté / AgroSup Dijon, Dijon, France
| | - Emilie Lang
- UMR PAM Université Bourgogne-Franche-Comté / AgroSup Dijon, Dijon, France
| | - Hayet Iddir
- UMR PAM Université Bourgogne-Franche-Comté / AgroSup Dijon, Dijon, France
| | - Stéphane Guyot
- UMR PAM Université Bourgogne-Franche-Comté / AgroSup Dijon, Dijon, France
| | - Cosette Grandvalet
- UMR PAM Université Bourgogne-Franche-Comté / AgroSup Dijon, Dijon, France
| | - Patrick Gervais
- UMR PAM Université Bourgogne-Franche-Comté / AgroSup Dijon, Dijon, France
| | - Laurent Beney
- UMR PAM Université Bourgogne-Franche-Comté / AgroSup Dijon, Dijon, France
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Morganti M, Scaltriti E, Cozzolino P, Bolzoni L, Casadei G, Pierantoni M, Foni E, Pongolini S. Processing-Dependent and Clonal Contamination Patterns of Listeria monocytogenes in the Cured Ham Food Chain Revealed by Genetic Analysis. Appl Environ Microbiol 2016; 82:822-31. [PMID: 26590278 PMCID: PMC4725272 DOI: 10.1128/aem.03103-15] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Accepted: 11/13/2015] [Indexed: 01/01/2023] Open
Abstract
The quantitative and qualitative patterns of environmental contamination by Listeria monocytogenes were investigated in the production chain of dry-cured Parma ham. Standard arrays of surfaces were sampled in processing facilities during a single visit per plant in the three compartments of the food chain, i.e., ham production (19 plants) and postproduction, which was divided into deboning (43 plants) and slicing (25 plants) steps. The numbers of sampled surfaces were 384 in ham production, with 25 positive for L. monocytogenes, and 1,084 in postproduction, with 83 positives. Statistical analysis of the prevalence of contaminated surfaces showed that in ham production, contamination was higher at the beginning of processing and declined significantly toward the end, while in postproduction, prevalence rose toward the end of processing. Prevalence was higher in the deboning facilities than in slicing facilities and was dependent on the type of surface (floor/drainage > clothing > equipment). The qualitative pattern of contamination was investigated through an analysis of the survey isolates and a set of isolates derived from routine monitoring, including longitudinal isolations. Pulsed-field gel electrophoresis (PFGE) and whole-genome single-nucleotide polymorphism (SNP) analysis revealed a remarkable clonality of L. monocytogenes within plants, with the detection of 16 plant-specific clones out of 17 establishments with multiple isolates. Repeated detections of clonal isolates >6 months apart were also observed. Six was the maximum number of between-isolate differences in core SNPs observed within these clones. Based on the same six-SNP threshold, three clusters of clonal isolates, shared by six establishments, were also identified. The spread of L. monocytogenes within and between plants, as indicated by its clonal behavior, is a matter of concern for the hygienic management of establishments.
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Affiliation(s)
- Marina Morganti
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia-Romagna (IZSLER), Sezione di Parma, Parma, Italy
| | - Erika Scaltriti
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia-Romagna (IZSLER), Sezione di Parma, Parma, Italy
| | - Paolo Cozzolino
- Official Veterinary Service, Local Health Unit of Parma (AUSL), Parma, Italy Department of Public Health, Local Health Unit of Parma (AUSL), Parma, Italy
| | - Luca Bolzoni
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia-Romagna (IZSLER), Sezione di Parma, Parma, Italy Direzione Sanitaria, Servizio di Analisi del Rischio, Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia-Romagna (IZSLER), Parma, Italy
| | - Gabriele Casadei
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia-Romagna (IZSLER), Sezione di Parma, Parma, Italy
| | - Marco Pierantoni
- Official Veterinary Service, Local Health Unit of Parma (AUSL), Parma, Italy
| | - Emanuela Foni
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia-Romagna (IZSLER), Sezione di Parma, Parma, Italy
| | - Stefano Pongolini
- Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia-Romagna (IZSLER), Sezione di Parma, Parma, Italy Direzione Sanitaria, Servizio di Analisi del Rischio, Istituto Zooprofilattico Sperimentale della Lombardia e dell'Emilia-Romagna (IZSLER), Parma, Italy
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Affiliation(s)
- Steven J Schweon
- Steven J. Schweon is an infection prevention consultant in Saylorsburg, Pa
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Sinclair F. Being aware of the threats from listeriosis. Health Estate 2015; 69:77-79. [PMID: 26750035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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28
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Odedina GF, Vongkamjan K, Voravuthikunchai SP. Potential Bio-Control Agent from Rhodomyrtus tomentosa against Listeria monocytogenes. Nutrients 2015; 7:7451-68. [PMID: 26371033 PMCID: PMC4586541 DOI: 10.3390/nu7095346] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Revised: 07/27/2015] [Accepted: 08/10/2015] [Indexed: 11/21/2022] Open
Abstract
Listeria monocytogenes is an important foodborne pathogen implicated in many outbreaks of listeriosis. This study aimed at screening for the potential use of Rhodomyrtus tomentosa ethanolic leaf extract as a bio-control agent against L. monocytogenes. Twenty-two L. monocytogenes isolates were checked with 16 commercial antibiotics and isolates displayed resistance to 10 antibiotics. All the tested isolates were sensitive to the extract with inhibition zones ranging from 14 to 16 mm. Minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) values ranged from 16 to 32 µg/mL and 128 to 512 µg/mL, respectively. Time-kill assay showed that the extract had remarkable bactericidal effects on L. monocytogenes. The extract at a concentration of 16 µg/mL reduced tolerance to 10% NaCl in L. monocytogenes in 4 h. Stationary phase L. monocytogenes cells were rapidly inactivated by greater than 3-log units within 30 min of contact time with R. tomentosa extract at 128 µg/mL. Electron microscopy revealed fragmentary bacteria with changes in the physical and morphological properties. Our study demonstrates the potential of the extract for further development into a bio-control agent in food to prevent the incidence of L. monocytogenes contamination.
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Affiliation(s)
- Grace Fiyinfoluwa Odedina
- Department of Microbiology, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand.
- Excellent Research Laboratory on Natural Products, Faculty of Science and Natural Product Research Center of Excellence, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand.
| | - Kitiya Vongkamjan
- Department of Food Technology, Faculty of Agro-Industry, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand.
| | - Supayang Piyawan Voravuthikunchai
- Department of Microbiology, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand.
- Excellent Research Laboratory on Natural Products, Faculty of Science and Natural Product Research Center of Excellence, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand.
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Pereboom MTR, Manniën J, van Almkerk KDJ, Spelten ER, Gitsels JT, Martin L, Hutton EK, Schellevis FG. What information do Dutch midwives give clients about toxoplasmosis, listeriosis and cytomegalovirus prevention? An exploratory study of videotaped consultations. Patient Educ Couns 2014; 96:29-35. [PMID: 24820638 DOI: 10.1016/j.pec.2014.04.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2013] [Revised: 02/26/2014] [Accepted: 04/06/2014] [Indexed: 06/03/2023]
Abstract
OBJECTIVE To assess information provided by midwives about methods to prevent toxoplasmosis, listeriosis and cytomegalovirus, and whether the amount of provided information varied according to clients' and midwives' characteristics. METHODS Intake consultations with 229 clients in four midwifery practices were videotaped between August 2010 and April 2011. Videotaped intake consultations, where infectious disease prevention were discussed, were evaluated, using a specifically designed nine-item scoring tool. Midwives and clients filled in a questionnaire about their background characteristics. Multilevel linear regression analysis was performed to establish associations between the amount of information provided and clients' and midwives' characteristics. RESULTS In total 172 consultations with fifteen midwives were suitable for analyses. Information about not eating raw or undercooked meat and not consuming unpasteurized dairy products was provided most often. Information about not sharing eating utensils with small children and thoroughly reheating all ready-to-eat foods were rarely provided. More information was provided when the client was a primigravidae or the consultation lasted longer than 50min. CONCLUSION Information on infectious disease prevention given to pregnant women by primary care midwives was insufficient; especially for cytomegalovirus prevention. PRACTICE IMPLICATIONS A guideline for professionals on preventable infectious diseases may be useful to inform pregnant women properly.
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Affiliation(s)
- Monique T R Pereboom
- Department of Midwifery Science, AVAG and the EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands.
| | - Judith Manniën
- Department of Midwifery Science, AVAG and the EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands
| | - Kelly D J van Almkerk
- Department of Midwifery Science, AVAG and the EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands
| | - Evelien R Spelten
- Department of Midwifery Science, AVAG and the EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands
| | - Janneke T Gitsels
- Department of Midwifery Science, AVAG and the EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands; Faculty of Theology, VU University Amsterdam, The Netherlands
| | - Linda Martin
- Department of Midwifery Science, AVAG and the EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands
| | - Eileen K Hutton
- Department of Midwifery Science, AVAG and the EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands; Faculty of Health Sciences, McMaster University, Hamilton, Canada
| | - François G Schellevis
- Netherlands Institute for Health Services Research (NIVEL), Utrecht, The Netherlands; Department of General Practice & Elderly Care Medicine/EMGO Institute for Health and Care Research, VU University Medical Center, Amsterdam, The Netherlands
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30
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Pontes D, Azevedo M, Innocentin S, Blugeon S, Lefévre F, Azevedo V, Miyoshi A, Courtin P, Chapot-Chartier MP, Langella P, Chatel JM. Immune response elicited by DNA vaccination using Lactococcus lactis is modified by the production of surface exposed pathogenic protein. PLoS One 2014; 9:e84509. [PMID: 24465412 PMCID: PMC3897362 DOI: 10.1371/journal.pone.0084509] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Accepted: 11/21/2013] [Indexed: 01/02/2023] Open
Abstract
In this study, we compared immune responses elicited by DNA immunization using Lactococcus lactis or L. lactis expressing the Staphylococcus aureus invasin Fibronectin Binding Protein A (FnBPA) at its surface. Both strains carried pValac:BLG, a plasmid containing the cDNA of Beta-Lactoglobulin (BLG), and were designated LL-BLG and LL-FnBPA+ BLG respectively. A TH2 immune response characterized by the secretion of IL-4 and IL-5 in medium of BLG reactivated splenocytes was detected after either oral or intranasal administration of LL-FnBPA+ BLG. In contrast, intranasal administration of LL-BLG elicited a TH1 immune response. After BLG sensitization, mice previously intranasally administered with LL-BLG showed a significantly lower concentration of BLG-specific IgE than the mice non-administered. Altenatively administration of LL-FnBPA+ BLG didn't modify the BLG-specific IgE concentration obtained after sensitization, thus confirming the TH2 orientation of the immune response. To determine if the TH2-skewed immune response obtained with LL-FnBpA+ BLG was FnBPA-specific or not, mice received another L. lactis strain producing a mutated form of the Listeria monocytogenes invasin Internalin A intranasally, allowing thus the binding to murine E-cadherin, and containing pValac:BLG (LL-mInlA+ BLG). As with LL-FnBPA+ BLG, LL-mInlA+ BLG was not able to elicit a TH1 immune response. Furthermore, we observed that these difference were not due to the peptidoglycan composition of the cell wall as LL-FnBPA+ BLG, LL-mInlA+ BLG and LL-BLG strains shared a similar composition. DNA vaccination using LL-BLG elicited a pro-inflammatory TH1 immune response while using LL-FnBPA+ BLG or LL-mInlA+ BLG elicited an anti-inflammatory TH2 immune response.
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MESH Headings
- Adhesins, Bacterial/genetics
- Adhesins, Bacterial/immunology
- Administration, Intranasal
- Administration, Oral
- Animals
- Bacterial Proteins/genetics
- Bacterial Proteins/immunology
- Cell Engineering
- Drug Delivery Systems/methods
- Female
- Immunity, Active
- Immunity, Cellular
- Lactococcus lactis/genetics
- Lactococcus lactis/immunology
- Lactoglobulins/genetics
- Lactoglobulins/immunology
- Listeriosis/immunology
- Listeriosis/prevention & control
- Mice
- Mice, Inbred BALB C
- Plasmids
- Staphylococcal Infections/immunology
- Staphylococcal Infections/prevention & control
- Th1 Cells/cytology
- Th1 Cells/immunology
- Th2 Cells/cytology
- Th2 Cells/immunology
- Vaccination
- Vaccines, DNA/administration & dosage
- Vaccines, DNA/biosynthesis
- Vaccines, DNA/genetics
- Vaccines, Synthetic
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Affiliation(s)
- Daniela Pontes
- State University of Paraiba, Campus V, Department of Biological Sciences. João Pessoa, Paraíba, Brazil
- INRA, UMR1319 Micalis, Domaine de Vilvert, Jouy-en-Josas, France
- AgroParisTech, UMR1319 Micalis, Jouy-en-Josas, France
| | - Marcela Azevedo
- INRA, UMR1319 Micalis, Domaine de Vilvert, Jouy-en-Josas, France
- AgroParisTech, UMR1319 Micalis, Jouy-en-Josas, France
- Institute of Biological Sciences, Federal University of Minas Gerais (UFMG-ICB), Belo Horizonte, Minas Gerais, Brazil
| | - Silvia Innocentin
- INRA, UMR1319 Micalis, Domaine de Vilvert, Jouy-en-Josas, France
- AgroParisTech, UMR1319 Micalis, Jouy-en-Josas, France
- Lymphocyte Signaling and Development Laboratory, Babraham Institute, Babraham Research Campus, Cambridge, United Kingdom
| | - Sébastien Blugeon
- INRA, UMR1319 Micalis, Domaine de Vilvert, Jouy-en-Josas, France
- AgroParisTech, UMR1319 Micalis, Jouy-en-Josas, France
| | | | - Vasco Azevedo
- Institute of Biological Sciences, Federal University of Minas Gerais (UFMG-ICB), Belo Horizonte, Minas Gerais, Brazil
| | - Anderson Miyoshi
- Institute of Biological Sciences, Federal University of Minas Gerais (UFMG-ICB), Belo Horizonte, Minas Gerais, Brazil
| | - Pascal Courtin
- INRA, UMR1319 Micalis, Domaine de Vilvert, Jouy-en-Josas, France
- AgroParisTech, UMR1319 Micalis, Jouy-en-Josas, France
| | - Marie-Pierre Chapot-Chartier
- INRA, UMR1319 Micalis, Domaine de Vilvert, Jouy-en-Josas, France
- AgroParisTech, UMR1319 Micalis, Jouy-en-Josas, France
| | - Philippe Langella
- INRA, UMR1319 Micalis, Domaine de Vilvert, Jouy-en-Josas, France
- AgroParisTech, UMR1319 Micalis, Jouy-en-Josas, France
| | - Jean-Marc Chatel
- INRA, UMR1319 Micalis, Domaine de Vilvert, Jouy-en-Josas, France
- AgroParisTech, UMR1319 Micalis, Jouy-en-Josas, France
- * E-mail:
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Osman KM, Zolnikov TR, Samir A, Orabi A. Prevalence, pathogenic capability, virulence genes, biofilm formation, and antibiotic resistance of Listeria in goat and sheep milk confirms need of hygienic milking conditions. Pathog Glob Health 2014; 108:21-9. [PMID: 24548157 PMCID: PMC4083164 DOI: 10.1179/2047773213y.0000000115] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Goat and sheep milk is consumed by human populations throughout the world; as a result, it has been proposed as an alternative, nutrient-rich milk to feed infants allergic to cow's milk. Unfortunately, potentially harmful bacteria have not been thoroughly tested in goat or sheep milk. Listeria monocytogenes is a harmful bacterium that causes adverse health effects if ingested by humans. The purpose of this study was to estimate the prevalence and characterize the phenotype, genotype, virulence factors, biofilm formation, and antibiopotential of Listeria isolated from the milk of goat and sheep. Udder milk samples were collected from 107 goats and 102 sheep and screened for mastitis using the California mastitis test (CMT). Samples were then examined for the presence of pathogenic Listeria spp; if detected, the isolation of pathogenic Listeria (L. monocytogenes and Listeria ivanovii) was completed using isolation and identification techniques recommended by the International Organization for Standards (ISO 11290-1, 1996), in addition to serological, in vitro and in vivo pathogenicity tests. The isolates were subjected to PCR assay for virulence associated genes (hlyA, plcA, actA, and iap). Pathogenic Listeria spp. were isolated from 5·6% of goat and 3·9% sheep milk samples, with 33·3 and 25% of these selected samples respectively containing L. monocytogenes. The results of this study provide evidence of the low-likelihood of contamination leading to the presence of L. monocytogenes in raw goat and sheep milk; however, this study also confirmed a strong in vitro ability for biofilm formation and pathogenic capability of L. monocytogenes if discovered in the milk. L. monocytogenes may be present in goat and sheep milk and in order to reduce the exposure, hygienic milking conditions must be employed for the milk to be considered a safe alternative for human consumption.
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Tenenhaus-Aziza F, Daudin JJ, Maffre A, Sanaa M. Risk-Based Approach for Microbiological Food Safety Management in the Dairy Industry: The Case of Listeria monocytogenes in Soft Cheese Made from Pasteurized Milk. Risk Anal 2014; 34:56-74. [PMID: 23777564 DOI: 10.1111/risa.12074] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
According to Codex Alimentarius Commission recommendations, management options applied at the process production level should be based on good hygiene practices, HACCP system, and new risk management metrics such as the food safety objective. To follow this last recommendation, the use of quantitative microbiological risk assessment is an appealing approach to link new risk-based metrics to management options that may be applied by food operators. Through a specific case study, Listeria monocytogenes in soft cheese made from pasteurized milk, the objective of the present article is to practically show how quantitative risk assessment could be used to direct potential intervention strategies at different food processing steps. Based on many assumptions, the model developed estimates the risk of listeriosis at the moment of consumption taking into account the entire manufacturing process and potential sources of contamination. From pasteurization to consumption, the amplification of a primo-contamination event of the milk, the fresh cheese or the process environment is simulated, over time, space, and between products, accounting for the impact of management options, such as hygienic operations and sampling plans. A sensitivity analysis of the model will help orientating data to be collected prioritarily for the improvement and the validation of the model. What-if scenarios were simulated and allowed for the identification of major parameters contributing to the risk of listeriosis and the optimization of preventive and corrective measures.
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Affiliation(s)
| | | | | | - Moez Sanaa
- National Veterinary School of Alfort, Maison+Alfort, France
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33
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Listeriosis: not only during pregnancy. Prescrire Int 2013; 22:248. [PMID: 24298598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Certain patients are exposed to an increased risk of listeriosis, particularly those with chronic lymphocytic leukaemia. It is better to inform them of the dietary and hygiene precautions to take to minimise this risk.
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Rudd BD, Venturi V, Smith NL, Nzingha K, Goldberg EL, Li G, Nikolich-Zugich J, Davenport MP. Acute neonatal infections 'lock-in' a suboptimal CD8+ T cell repertoire with impaired recall responses. PLoS Pathog 2013; 9:e1003572. [PMID: 24068921 PMCID: PMC3771883 DOI: 10.1371/journal.ppat.1003572] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2012] [Accepted: 07/07/2013] [Indexed: 11/28/2022] Open
Abstract
Microbial infection during various stages of human development produces widely different clinical outcomes, yet the links between age-related changes in the immune compartment and functional immunity remain unclear. The ability of the immune system to respond to specific antigens and mediate protection in early life is closely correlated with the level of diversification of lymphocyte antigen receptors. We have previously shown that the neonatal primary CD8+ T cell response to replication competent virus is significantly constricted compared to the adult response. In the present study, we have analyzed the subsequent formation of neonatal memory CD8+ T cells and their response to secondary infectious challenge. In particular, we asked whether the less diverse CD8+ T cell clonotypes that are elicited by neonatal vaccination with replication competent virus are ‘locked-in’ to the adult memory T cell, and thus may compromise the strength of adult immunity. Here we report that neonatal memory CD8+ T cells mediate poor recall responses compared to adults and are comprised of a repertoire of lower avidity T cells. During a later infectious challenge the neonatal memory CD8+ T cells compete poorly with the fully diverse repertoire of naïve adult CD8+ T cells and are outgrown by the adult primary response. This has important implications for the timing of vaccination in early life. Newborns typically have a heightened sensitivity to infectious diseases, the reasons for which are not yet well understood. One contributing factor is the limited diversity of lymphocyte receptors early in life to recognize antigen and control infection. We have previously shown that antigen-specific CD8+ T cell repertoires are significantly constricted in neonates compared with adults. In this study, we addressed the question of whether the developmental stage of the host at the time of vaccination influences the composition of the memory CD8+ T cell repertoire and its ability to mount a robust response to subsequent infections. We observed that the antigen-specific T cell repertoires elicited in the context of an acute neonatal infection, that are less diverse and comprised of lower-avidity T cells, are partially ‘locked-in’ to the adult memory T cell repertoire. However, in the face of a secondary infectious challenge, naïve adult T cells outcompete the lower avidity neonatal memory T cells and raise the diversity of the overall CD8+ T cell response. These results have potential implications for the design of vaccines to be administered in early life.
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MESH Headings
- Aging
- Animals
- Animals, Newborn
- CD8-Positive T-Lymphocytes/immunology
- CD8-Positive T-Lymphocytes/metabolism
- CD8-Positive T-Lymphocytes/pathology
- DNA, Recombinant/metabolism
- Herpes Simplex/immunology
- Herpes Simplex/prevention & control
- Herpes Simplex/virology
- Herpesvirus 1, Human/genetics
- Herpesvirus 1, Human/immunology
- Herpesvirus 1, Human/metabolism
- Immune System/growth & development
- Immune System/immunology
- Immune System/pathology
- Immunologic Deficiency Syndromes/etiology
- Immunologic Deficiency Syndromes/immunology
- Immunologic Deficiency Syndromes/metabolism
- Immunologic Deficiency Syndromes/pathology
- Immunologic Memory
- Listeria monocytogenes/genetics
- Listeria monocytogenes/immunology
- Listeria monocytogenes/metabolism
- Listeria monocytogenes/pathogenicity
- Listeriosis/immunology
- Listeriosis/microbiology
- Listeriosis/physiopathology
- Listeriosis/prevention & control
- Mice, Inbred Strains
- Models, Immunological
- Receptors, Antigen, T-Cell, alpha-beta/metabolism
- Specific Pathogen-Free Organisms
- Vaccines, Attenuated/adverse effects
- Vaccines, Attenuated/immunology
- Vaccinia/immunology
- Vaccinia/prevention & control
- Vaccinia/virology
- Vaccinia virus/genetics
- Vaccinia virus/immunology
- Vaccinia virus/metabolism
- Virulence
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Affiliation(s)
- Brian D. Rudd
- Department of Microbiology and Immunology, Cornell University, Ithaca, New York, United States of America
- * E-mail: (BDR); (JNZ); (MPD)
| | - Vanessa Venturi
- Computational Biology Group, Centre for Vascular Research, University of New South Wales, Kensington, New South Wales, Australia
| | - Norah L. Smith
- Department of Microbiology and Immunology, Cornell University, Ithaca, New York, United States of America
| | - Kito Nzingha
- Department of Microbiology and Immunology, Cornell University, Ithaca, New York, United States of America
| | - Emily L. Goldberg
- Department of Immunobiology and the Arizona Center on Aging, University of Arizona College of Medicine, Tucson, Arizona, and the BIO5 Institute, University of Arizona, Tucson, Arizona, United States of America
| | - Gang Li
- Department of Immunobiology and the Arizona Center on Aging, University of Arizona College of Medicine, Tucson, Arizona, and the BIO5 Institute, University of Arizona, Tucson, Arizona, United States of America
| | - Janko Nikolich-Zugich
- Department of Immunobiology and the Arizona Center on Aging, University of Arizona College of Medicine, Tucson, Arizona, and the BIO5 Institute, University of Arizona, Tucson, Arizona, United States of America
- * E-mail: (BDR); (JNZ); (MPD)
| | - Miles P. Davenport
- Complex Systems in Biology Group, Centre for Vascular Research, University of New South Wales, Kensington, New South Wales, Australia
- * E-mail: (BDR); (JNZ); (MPD)
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Hoelzer K, Chen Y, Dennis S, Evans P, Pouillot R, Silk BJ, Walls I. New data, strategies, and insights for Listeria monocytogenes dose-response models: summary of an interagency workshop, 2011. Risk Anal 2013; 33:1568-1581. [PMID: 23311571 DOI: 10.1111/risa.12005] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Listeria monocytogenes is a leading cause of hospitalization, fetal loss, and death due to foodborne illnesses in the United States. A quantitative assessment of the relative risk of listeriosis associated with the consumption of 23 selected categories of ready-to-eat foods, published by the U.S. Department of Health and Human Services and the U.S. Department of Agriculture in 2003, has been instrumental in identifying the food products and practices that pose the greatest listeriosis risk and has guided the evaluation of potential intervention strategies. Dose-response models, which quantify the relationship between an exposure dose and the probability of adverse health outcomes, were essential components of the risk assessment. However, because of data gaps and limitations in the available data and modeling approaches, considerable uncertainty existed. Since publication of the risk assessment, new data have become available for modeling L. monocytogenes dose-response. At the same time, recent advances in the understanding of L. monocytogenes pathophysiology and strain diversity have warranted a critical reevaluation of the published dose-response models. To discuss strategies for modeling L. monocytogenes dose-response, the Interagency Risk Assessment Consortium (IRAC) and the Joint Institute for Food Safety and Applied Nutrition (JIFSAN) held a scientific workshop in 2011 (details available at http://foodrisk.org/irac/events/). The main findings of the workshop and the most current and relevant data identified during the workshop are summarized and presented in the context of L. monocytogenes dose-response. This article also discusses new insights on dose-response modeling for L. monocytogenes and research opportunities to meet future needs.
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Affiliation(s)
- K Hoelzer
- Center for Food Safety and Applied Nutrition, Food and Drug Administration, College Park, MD, USA
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Shugart JA, Bambina S, Alice AF, Montler R, Bahjat KS. A self-help program for memory CD8+ T cells: positive feedback via CD40-CD40L signaling as a critical determinant of secondary expansion. PLoS One 2013; 8:e64878. [PMID: 23717671 PMCID: PMC3662717 DOI: 10.1371/journal.pone.0064878] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Accepted: 04/18/2013] [Indexed: 12/14/2022] Open
Abstract
The ability of memory CD8+ T cells to rapidly proliferate and acquire cytolytic activity is critical for protective immunity against intracellular pathogens. The signals that control this recall response remain unclear. We show that CD40L production by memory CD8+ T cells themselves is an essential catalyst for secondary expansion when systemic inflammation is limited. Secondary immunization accompanied by high levels of systemic inflammation results in CD8+ T cell secondary expansion independent of CD4+ T cells and CD40-CD40L signaling. Conversely, when the inflammatory response is limited, memory CD8+ T cell secondary expansion requires CD40L-producing cells, and memory CD8+ T cells can provide this signal. These results demonstrate that vaccination regimens differ in their dependence on CD40L-expressing CD8+ T cells for secondary expansion, and propose that CD40L-expression by CD8+ T cells is a fail-safe mechanism that can promote memory CD8+ T cell secondary expansion when inflammation is limited.
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Affiliation(s)
- Jessica A. Shugart
- Earle A. Chiles Research Institute, Robert W. Franz Cancer Research Center, Providence Cancer Center, Portland, Oregon, United States of America
| | - Shelly Bambina
- Earle A. Chiles Research Institute, Robert W. Franz Cancer Research Center, Providence Cancer Center, Portland, Oregon, United States of America
| | - Alejandro F. Alice
- Earle A. Chiles Research Institute, Robert W. Franz Cancer Research Center, Providence Cancer Center, Portland, Oregon, United States of America
| | - Ryan Montler
- Earle A. Chiles Research Institute, Robert W. Franz Cancer Research Center, Providence Cancer Center, Portland, Oregon, United States of America
| | - Keith S. Bahjat
- Earle A. Chiles Research Institute, Robert W. Franz Cancer Research Center, Providence Cancer Center, Portland, Oregon, United States of America
- * E-mail:
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Farquhar D. What you should know: salmonella and listeria and E. coli--oh my! State Legis 2013; 39:28-30. [PMID: 23547329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
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38
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What's in that pork? We found antibiotic-resistant bacteria--and traces of a veterinary drug. Consum Rep 2013; 78:44-6. [PMID: 23556188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
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39
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Davies R, Dixon WG, Watson KD, Lunt M, Symmons DPM, Hyrich KL. Influence of anti-TNF patient warning regarding avoidance of high risk foods on rates of listeria and salmonella infections in the UK. Ann Rheum Dis 2012; 72:461-2. [PMID: 23076071 DOI: 10.1136/annrheumdis-2012-202228] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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40
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Taylor M, Kelly M, Noël M, Brisdon S, Berkowitz J, Gustafson L, Galanis E. Pregnant women's knowledge, practices, and needs related to food safety and listeriosis: a study in British Columbia. Can Fam Physician 2012; 58:1106-1112. [PMID: 23064922 PMCID: PMC3470511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
OBJECTIVE To understand the knowledge, attitudes, practices, and needs of pregnant women regarding food safety, including the risk of listeriosis, in order to develop targeted messages and educational resources in British Columbia (BC). DESIGN Qualitative study using focus groups and quantitative study using a standardized questionnaire. SETTING Seven family practice clinics in BC. Focus groups were conducted in 3 program groups for new mothers. PARTICIPANTS Pregnant women and women who had recently delivered babies. METHODS Three focus groups were conducted with women who had recently delivered. Qualitative analysis to identify common themes was conducted. A questionnaire was completed by pregnant women at their health care providers' (HCPs') offices. Statistical analysis was done to assess associations between demographic features, knowledge, and practices. Results from both study methods were compared and common findings were presented. MAIN FINDINGS Participants reported that food safety and the risk of listeriosis were important to them during pregnancy; however, their knowledge of high-risk foods and safe food practices was limited. Although they identified their HCPs as a valuable source of information, they explained there were barriers to getting information from them. Participants reported doing their own research using books, websites, and social networks. They made recommendations to improve food safety messages, as well as the availability and format of resources. CONCLUSION Women in BC identified a gap between the information on food safety and listeriosis that they needed during pregnancy and the resources that were available. Using the information collected from this study, resources that are targeted at women of childbearing years, as well as their HCPs, are under development in BC.
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Affiliation(s)
- Marsha Taylor
- BC Centre for Disease Control, 655 W 12 Ave, Vancouver, BC V5V 4R4.
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Kim KH, Choi BK, Kim JD, Kim YH, Lee SK, Suh JH, Lee SC, Kang SW, Kwon BS. 4-1BB signaling breaks the tolerance of maternal CD8+ T cells that are reactive with alloantigens. PLoS One 2012; 7:e45481. [PMID: 23029041 PMCID: PMC3448654 DOI: 10.1371/journal.pone.0045481] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2012] [Accepted: 08/20/2012] [Indexed: 11/18/2022] Open
Abstract
4-1BB (CD137, TNFRSF9), a member of the activation-induced tumor necrosis factor receptor family, is a powerful T-cell costimulatory molecule. It generally enhances CD8(+) T responses and even breaks the tolerance of CD8(+) T cells in an antigen-specific manner. In the present study we found that it was expressed in the placentas of pregnant mice and that its expression coincided with that of the immunesuppressive enzyme indoleamine 2,3-dioxygenase (IDO). Therefore, we investigated whether 4-1BB signaling is involved in fetal rejection using agonistic anti-4-1BB mAb and 4-1BB-deficient mice. Treatment with agonistic anti-4-1BB mAb markedly increased the rate of rejection of allogeneic but not syngeneic fetuses, and this was primarily dependent on CD8(+) T cells. Complement component 3 (C3) seemed to be the effector molecule because 4-1BB triggering resulting in accumulation of C3 in the placenta, and this accumulation was also reversed by anti-CD8 mAb treatment. These findings demonstrate that 4-1BB triggering breaks the tolerance of CD8(+) T cells to alloantigens in the placenta. Moreover, triggering 4-1BB protected the pregnant mice from Listeria monocytogenes (LM) infection, but led to rejection of semi-allogeneic fetuses. Therefore, given the cross-recognition of alloantigen by pathogen-reactive CD8(+) T cells, the true function of 4-1BB may be to reverse the hypo-responsiveness of pathogen-reactive CD8(+) T cells in the placenta in cases of infection, even if that risks losing the fetus.
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Affiliation(s)
- Kwang H. Kim
- Division of Cancer Biology, National Cancer Center, Goyang, Kyeonggi-do, Korea
| | - Beom K. Choi
- Division of Cancer Biology, National Cancer Center, Goyang, Kyeonggi-do, Korea
| | - Jung D. Kim
- Departments of Obstetrics, Gynecology & Reproductive Sciences, Yale University School of Medicine, New Haven, Connecticut, United States of America
| | - Young H. Kim
- Program for Immunotherapeutic Research, National Cancer Center, Goyang, Kyeonggi-do, Korea
| | - Sun K. Lee
- Department of Biological Sciences, University of Ulsan, Ulsan, Korea
| | - Jae H. Suh
- Department of Pathology, Ulsan University Hospital, Ulsan, Korea
| | - Sang C. Lee
- Division of Cancer Biology, National Cancer Center, Goyang, Kyeonggi-do, Korea
| | - Sang W. Kang
- Department of Biological Sciences, University of Ulsan, Ulsan, Korea
| | - Byoung S. Kwon
- Division of Cancer Biology, National Cancer Center, Goyang, Kyeonggi-do, Korea
- Program for Immunotherapeutic Research, National Cancer Center, Goyang, Kyeonggi-do, Korea
- Department of Medicine, Tulane University Health Sciences Center, New Orleans, Louisianna, United States of America
- * E-mail:
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Yde M, Naranjo M, Mattheus W, Stragier P, Pochet B, Beulens K, De Schrijver K, Van den Branden D, Laisnez V, Flipse W, Leclercq A, Lecuit M, Dierick K, Bertrand S. Usefulness of the European Epidemic Intelligence Information System in the management of an outbreak of listeriosis, Belgium, 2011. Euro Surveill 2012; 17:20279. [PMID: 23040965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] Open
Abstract
A cluster of time-linked cases and the identification of a clonal strain suggest the occurrence of an outbreak of listeriosis in Belgium in 2011, presumably due to the consumption of hard cheese made with pasteurised milk and produced by a Belgium manufacturer. The outbreak clone was identified as Listeria monocytogenes serovar 1/2a, sensitive to arsenic and cadmium and of multilocus sequence typing MLST-type 37. Food investigation of this outbreak was facilitated by the European Epidemic Intelligence Information System and data exchanged between French and Belgium listeriosis surveillance systems.
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Affiliation(s)
- M Yde
- Communicable and Infectious Diseases, Scientific Institute of Public Health, Brussels, Belgium
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43
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Hoelzer K, Oliver HF, Kohl LR, Hollingsworth J, Wells MT, Wiedmann M. Structured expert elicitation about Listeria monocytogenes cross-contamination in the environment of retail deli operations in the United States. Risk Anal 2012; 32:1139-1156. [PMID: 22053817 DOI: 10.1111/j.1539-6924.2011.01729.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Listeria monocytogenes is among the foodborne pathogens with the highest death toll in the United States. Ready-to-eat foods contaminated at retail are an important source of infection. Environmental sites in retail deli operations can be contaminated. However, commonly contaminated sites are unlikely to come into direct contact with food and the public health relevance of environmental contamination has remained unclear. To identify environmental sites that may pose a considerable cross-contamination risk, to elucidate potential transmission pathways, and to identify knowledge gaps, we performed a structured expert elicitation of 41 experts from state regulatory agencies and the food retail industry with practical experience in retail deli operations. Following the "Delphi" method, the elicitation was performed in three consecutive steps: questionnaire, review and discussion of results, second questionnaire. Hands and gloves were identified as important potential contamination sources. However, bacterial transfers to and from hands or gloves represented a major data gap. Experts agreed about transfer probabilities from cutting boards, scales, deli cases, and deli preparation sinks to product, and about transfer probabilities from floor drains, walk-in cooler floors, and knife racks to food contact surfaces. Comparison of experts' opinions to observational data revealed a tendency among experts with certain demographic characteristics and professional opinions to overestimate prevalence. Experts' votes clearly clustered into separate groups not defined by place of employment, even though industry experts may have been somewhat overrepresented in one cluster. Overall, our study demonstrates the value and caveats of expert elicitation to identify data gaps and prioritize research efforts.
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Affiliation(s)
- Karin Hoelzer
- Department of Food Science, Cornell University, 410 Stocking Hall, Ithaca, NY 14850, USA.
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44
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Lahou E, Jacxsens L, Uyttendaele M. Risk-based sampling plan to control Listeria monocytogenes in a hospital food service operation. Commun Agric Appl Biol Sci 2012; 77:51-54. [PMID: 22558755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Affiliation(s)
- E Lahou
- Laboratory of Food Microbiology and Food Preservation, Department of Food Safety and Food Quality, UGent, Coupure Links 653, BE-9000 Gent, Belgium
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Xiao D, Gömmel C, Davidson PM, Zhong Q. Intrinsic Tween 20 improves release and antilisterial properties of co-encapsulated nisin and thymol. J Agric Food Chem 2011; 59:9572-9580. [PMID: 21812480 DOI: 10.1021/jf201864v] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Antimicrobial delivery systems have been proposed as potential solutions to improve effectiveness of antimicrobials in food matrixes by shielding antimicrobials from contacting food matrix components and releasing them continuously. In this work, spray-dried capsules were produced from zein solutions with the same concentrations of nisin and thymol but with varying Tween 20 contents for characterization of release kinetics of antimicrobials and antilisterial properties. At intermediate levels of Tween 20, sustained and more complete release of antimicrobials was observed at pH 6.0 and 8.0. Most capsule samples were more effective than free antimicrobials against Listeria monocytogenes in 2% reduced fat milk, and the best capsule treatment reduced the bacterial population by 2 log CFU/mL more than comparable free antimicrobials after 4 h incubation at 25 °C. Our work demonstrated that nonionic surfactant can be conveniently used to modulate characteristics of delivery systems to effectively improve antimicrobial functions in food systems.
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Affiliation(s)
- Dan Xiao
- Department of Food Science and Technology, The University of Tennessee, Knoxville, Tennessee 37996, United States
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46
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Sui J, Cao L, Lin H. Antibacterial activity of egg yolk antibody (IgY) against Listeria monocytogenes and preliminary evaluation of its potential for food preservation. J Sci Food Agric 2011; 91:1946-1950. [PMID: 21495036 DOI: 10.1002/jsfa.4381] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2009] [Revised: 12/03/2010] [Accepted: 02/10/2011] [Indexed: 05/30/2023]
Abstract
BACKGROUND Egg yolk antibody (IgY) is a unique type of immunoglobulin found in egg yolks, and many reports have described its ability to inhibit corresponding antigen bacteria. The objective of this study was to evaluate the antibacterial activity of IgY specific to Listeria monocytogenes, an important food pathogen to both humans and animals, as well as its potential use for food preservation. RESULTS Specific IgY was generated by immunising Leghorn chickens with whole cells of L. monocytogenes, and its inhibitory effect on bacterial growth was tested in liquid medium and food samples. After 8 h of incubation with specific IgY, there was a significant decrease in the growth (absorbance at 600 nm) of L. monocytogenes in comparison with controls. IgY also inhibited the growth of L. monocytogenes inoculated onto fresh or smoked salmon samples. Compared with those of blanks, numbers of L. monocytogenes were reduced by more than 2 log units after 15 days of storage at 6 ± 1 °C in the presence of specific IgY. CONCLUSION The results suggest the potential application of specific IgY as a natural antimicrobial agent for food preservation.
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Affiliation(s)
- Jianxin Sui
- Food Safety Laboratory, Ocean University of China, Qingdao, China
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47
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Knowles H, Heizer JW, Li Y, Chapman K, Ogden CA, Andreasen K, Shapland E, Kucera G, Mogan J, Humann J, Lenz LL, Morrison AD, Perraud AL. Transient Receptor Potential Melastatin 2 (TRPM2) ion channel is required for innate immunity against Listeria monocytogenes. Proc Natl Acad Sci U S A 2011; 108:11578-83. [PMID: 21709234 PMCID: PMC3136283 DOI: 10.1073/pnas.1010678108] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
The generation of reactive oxygen species (ROS) is inherent to immune responses. ROS are crucially involved in host defense against pathogens by promoting bacterial killing, but also as signaling agents coordinating the production of cytokines. Transient Receptor Potential Melastatin 2 (TRPM2) is a Ca(2+)-permeable channel gated via binding of ADP-ribose, a metabolite formed under conditions of cellular exposure to ROS. Here, we show that TRPM2-deficient mice are extremely susceptible to infection with Listeria monocytogenes (Lm), exhibiting an inefficient innate immune response. In a comparison with IFNγR-deficient mice, TRPM2(-/-) mice shared similar features of uncontrolled bacterial replication and reduced levels of inducible (i)NOS-expressing monocytes, but had intact IFNγ responsiveness. In contrast, we found that levels of cytokines IL-12 and IFNγ were diminished in TRPM2(-/-) mice following Lm infection, which correlated with their reduced innate activation. Moreover, TRPM2(-/-) mice displayed a higher degree of susceptibility than IL-12-unresponsive mice, and supplementation with recombinant IFNγ was sufficient to reverse the unrestrained bacterial growth and ultimately the lethal phenotype of Lm-infected TRPM2(-/-) mice. The severity of listeriosis we observed in TRPM2(-/-) mice has not been reported for any other ion channel. These findings establish an unsuspected role for ADP-ribose and ROS-mediated cation flux for innate immunity, opening up unique possibilities for immunomodulatory intervention through TRPM2.
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Affiliation(s)
- Heather Knowles
- Integrated Department of Immunology, National Jewish Health and University of Colorado, Denver, CO 80206
| | - Justin W. Heizer
- Integrated Department of Immunology, National Jewish Health and University of Colorado, Denver, CO 80206
| | - Yuan Li
- Integrated Department of Immunology, National Jewish Health and University of Colorado, Denver, CO 80206
| | - Kathryn Chapman
- Molecular and Cellular Technologies, Platform Technologies and Science, GlaxoSmithKline Research and Development, Stevenage SG1 2NY, United Kingdom; and
| | - Carol Anne Ogden
- Innate Immunity Discovery Performance Unit, Immuno-Inflammation, GlaxoSmithKline, Collegeville, PA 19426
| | - Karl Andreasen
- Integrated Department of Immunology, National Jewish Health and University of Colorado, Denver, CO 80206
| | - Ellen Shapland
- Molecular and Cellular Technologies, Platform Technologies and Science, GlaxoSmithKline Research and Development, Stevenage SG1 2NY, United Kingdom; and
| | - Gary Kucera
- Molecular and Cellular Technologies, Platform Technologies and Science, GlaxoSmithKline Research and Development, Stevenage SG1 2NY, United Kingdom; and
| | - Jennifer Mogan
- Integrated Department of Immunology, National Jewish Health and University of Colorado, Denver, CO 80206
| | - Jessica Humann
- Integrated Department of Immunology, National Jewish Health and University of Colorado, Denver, CO 80206
| | - Laurel L. Lenz
- Integrated Department of Immunology, National Jewish Health and University of Colorado, Denver, CO 80206
| | - Alastair D. Morrison
- Molecular and Cellular Technologies, Platform Technologies and Science, GlaxoSmithKline Research and Development, Stevenage SG1 2NY, United Kingdom; and
| | - Anne-Laure Perraud
- Integrated Department of Immunology, National Jewish Health and University of Colorado, Denver, CO 80206
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Abstract
Listeria is commonly found in processed and prepared foods and listeriosis is associated with high morbidity and mortality. Preventative measures are well prescribed and monitoring and voluntary recall of contaminated products has resulted in a 44% reduction in the prevalence of perinatal listeriosis in the USA. Pregnant women are at high risk for listeriosis, but symptoms are non-specific and diagnosis is difficult. The intracellular life-cycle of Listeria protects the bacterium from host innate and adaptive immune responses. Antibiotic treatment requires agents able to penetrate, distribute, and remain stable within host cells. Prolonged use of high-dose ampicillin can significantly improve neonatal outcome.
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Affiliation(s)
- Ronald F. Lamont
- Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, Maryland and Detroit, Michigan, USA
- Wayne State University School of Medicine, Department of Obstetrics and Gynecology, Detroit, Michigan, USA
| | - Jack Sobel
- Wayne State University School of Medicine, Department of Infectious Diseases, Detroit, Michigan, USA
| | - Shali Mazaki-Tovi
- Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, Maryland and Detroit, Michigan, USA
- Wayne State University School of Medicine, Department of Obstetrics and Gynecology, Detroit, Michigan, USA
| | - Juan Pedro Kusanovic
- Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, Maryland and Detroit, Michigan, USA
- Wayne State University School of Medicine, Department of Obstetrics and Gynecology, Detroit, Michigan, USA
| | - Edi Vaisbuch
- Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, Maryland and Detroit, Michigan, USA
- Wayne State University School of Medicine, Department of Obstetrics and Gynecology, Detroit, Michigan, USA
| | - Sun Kwon Kim
- Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, Maryland and Detroit, Michigan, USA
| | - Niels Uldbjerg
- Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, Maryland and Detroit, Michigan, USA
| | - Roberto Romero
- Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, Maryland and Detroit, Michigan, USA
- Wayne State University School of Medicine, Department of Obstetrics and Gynecology, Detroit, Michigan, USA
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan, USA
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49
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Kołakowska A, Madajczak G. [Listeria monocytogenes in human infections]. Przegl Epidemiol 2011; 65:57-62. [PMID: 21735837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The Listeria genus is distinguished into six species from which just one--Listeria monocytogenes is pathogenic for humans. The main route of acquisition of Listeria is through the ingestion of contaminated food products. An important element of the L. monocytogenes pathogenesis infection is affiliation with high-risk group of immunocompromised patients, infants or pregnant women, who infected by this microorganism can lead to miscarriage. Listeriosis can appear in the form of sepsis, infection of the nervous system or local abscesses. Another form of listeriosis is gastrointestinal tract infection--noticed in case of food poisoning outbreak.
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Affiliation(s)
- Agnieszka Kołakowska
- Pracownia Diagnostyki Bakteryjnych Zakazeń Przewodu Pokarmowego Zakład Bakteriologii Narodowego Instytutu Zdrowia Publicznego--Państwowego Zakładu Higieny
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50
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Caplan ME. [Measuring the control and decrease in prevalence of Listeria monocytogenes species in foods of animal origin]. Bacteriol Virusol Parazitol Epidemiol 2011; 56:51-62. [PMID: 23745223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A large distributed bacterium, Listeria monocytogenes has been isolated from water and fresh vegetables, raw meat and processed meat (all types), and raw, salted and smoked fish. L. monocytogenes grows at low oxygen concentrations and at low temperatures, surviving for a long time in the environment, in the processing plant, as well as on the equipment, instruments and during storage at the refrigeration temperature. L. monocytogenes causes invasive listeriosis, often affecting immunocompromised individuals. Epidemiologically, listeriosis appears as sporadic cases and outbreaks, with an incidence of 3-8 cases/1000000 inhabitants, run-down in most countries, reflecting the measures compulsory in food processing industry. The purpose of this review is to describe the measures regarding the implementation of Current Good Manufacturing Practice (CGMP), to protrude the integrity of cold chain through preparing, packing and holding food, including household refrigerating, and to increase a good communication, particularly for consumers at increased risk of listeriosis.
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Affiliation(s)
- Marius Eduard Caplan
- Universitatea de Stiinţe Agricole şi Medicină Veterinară Facultatea de Medicină Veterinară, Bucureşti.
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