1
|
Faille C, Brauge T, Leleu G, Hanin A, Denis C, Midelet G. Comparison of the performance of the biofilm sampling methods (swab, sponge, contact agar) in the recovery of Listeria monocytogenes populations considering the seafood environment conditions. Int J Food Microbiol 2020; 325:108626. [DOI: 10.1016/j.ijfoodmicro.2020.108626] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 03/29/2020] [Accepted: 03/30/2020] [Indexed: 11/25/2022]
|
2
|
Palma F, Brauge T, Radomski N, Mallet L, Felten A, Mistou MY, Brisabois A, Guillier L, Midelet-Bourdin G. Dynamics of mobile genetic elements of Listeria monocytogenes persisting in ready-to-eat seafood processing plants in France. BMC Genomics 2020; 21:130. [PMID: 32028892 PMCID: PMC7006209 DOI: 10.1186/s12864-020-6544-x] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 01/30/2020] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Listeria monocytogenes Clonal Complexes (CCs) have been epidemiologically associated with foods, especially ready-to-eat (RTE) products for which the most likely source of contamination depends on the occurrence of persisting clones in food-processing environments (FPEs). As the ability of L. monocytogenes to adapt to environmental stressors met in the food chain challenges the efforts to its eradication from FPEs, the threat of persistent strains to the food industry and public health authorities continues to rise. In this study, 94 food and FPEs L. monocytogenes isolates, representing persistent subtypes contaminating three French seafood facilities over 2-6 years, were whole-genome sequenced to characterize their genetic diversity and determine the biomarkers associated with long-term survival in FPEs. RESULTS Food and FPEs isolates belonged to five CCs, comprising long-term intra- and inter-plant persisting clones. Mobile genetic elements (MGEs) such as plasmids, prophages and transposons were highly conserved within CCs, some of which harboured genes for resistance to chemical compounds and biocides used in the processing plants. Some of these genes were found in a 90.8 kbp plasmid, predicted to be" mobilizable", identical in isolates from CC204 and CC155, and highly similar to an 81.6 kbp plasmid from isolates belonging to CC7. These similarities suggest horizontal transfer between isolates, accompanied by deletion and homologous recombination in isolates from CC7. Prophage profiles characterized persistent clonal strains and several prophage-loci were plant-associated. Notably, a persistent clone from CC101 harboured a novel 31.5 kbp genomic island that we named Listeria genomic island 3 (LGI3), composed by plant-associated loci and chromosomally integrating cadmium-resistance determinants cadA1C. CONCLUSIONS Genome-wide analysis indicated that inter- and intra-plant persisting clones harbour conserved MGEs, likely acquired in FPEs and maintained by selective pressures. The presence of closely related plasmids in L. monocytogenes CCs supports the hypothesis of horizontal gene transfer conferring enhanced survival to FPE-associated stressors, especially in hard-to-clean harbourage sites. Investigating the MGEs evolutionary and transmission dynamics provides additional resolution to trace-back potentially persistent clones. The biomarkers herein discovered provide new tools for better designing effective strategies for the removal or reduction of resident L. monocytogenes in FPEs to prevent contamination of RTE seafood.
Collapse
Affiliation(s)
- Federica Palma
- ANSES, Laboratory for Food Safety, University Paris-Est, Maisons-Alfort, France
| | - Thomas Brauge
- ANSES, Laboratory for Food Safety, Boulogne-sur-Mer, France
| | - Nicolas Radomski
- ANSES, Laboratory for Food Safety, University Paris-Est, Maisons-Alfort, France
| | - Ludovic Mallet
- ANSES, Laboratory for Food Safety, University Paris-Est, Maisons-Alfort, France
| | - Arnaud Felten
- ANSES, Laboratory for Food Safety, University Paris-Est, Maisons-Alfort, France
| | - Michel-Yves Mistou
- ANSES, Laboratory for Food Safety, University Paris-Est, Maisons-Alfort, France
- INRAE, MaIAGE, University Paris-Saclay, Jouy-en-Josas, France
| | - Anne Brisabois
- ANSES, Laboratory for Food Safety, University Paris-Est, Maisons-Alfort, France
- ANSES, Laboratory for Food Safety, Boulogne-sur-Mer, France
| | - Laurent Guillier
- ANSES, Laboratory for Food Safety, University Paris-Est, Maisons-Alfort, France
| | | |
Collapse
|
3
|
Bu T, Yao X, Huang L, Dou L, Zhao B, Yang B, Li T, Wang J, Zhang D. Dual recognition strategy and magnetic enrichment based lateral flow assay toward Salmonella enteritidis detection. Talanta 2019; 206:120204. [PMID: 31514833 DOI: 10.1016/j.talanta.2019.120204] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 07/23/2019] [Accepted: 07/31/2019] [Indexed: 10/26/2022]
Abstract
As a rapid and facile means for foodborne bacteria detection in situ, lateral flow immunoassay (LFA) still has intrinsic limitations in the construction of the existing sandwich LFA format, e.g. screening difficulties of paired antibodies (Abs), poor stability of Ab probe, etc. Here, combined the strong affinity of antibiotic with the superior specificity of antibody molecules, a novel and robust LFA based on a dual recognition strategy and magnetic separation was designed to achieve specific and sensitive determination of Salmonella enteritidis (S. enteritidis). In this work, ampicillin (Amp), a broad-spectrum antibiotic against bacteria, was employed as an ideal Ab replacer to anchor cells of target bacteria. By coating Amp on magnetite nanoparticles (MNPs), the Amp-MNPs showed remarkable binding, separation and enrichment capacities toward bacteria even under complex sample matrices. To ensure the selectivity of this protocol, anti-S. enteritidis monoclonal antibody was then adopted as the second anchoring agent to form a sandwich complex with Amp-MNPs. Based on these facts, S. enteritidis, as low as 102-103 CFU/mL, could be detected by naked eyes in food samples. Therefore, this creative antibiotic-bacteria-antibody LFA sandwich pattern shows great application potential in the monitoring of food contamination and infectious diseases caused by pathogenic bacteria. Compared to the common paired Abs based sandwich method, the proposed approach was cost-effective, non-labor intensive, stable, sensitive and efficient.
Collapse
Affiliation(s)
- Tong Bu
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Xiaolin Yao
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Lunjie Huang
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510641, China
| | - Leina Dou
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Bingxin Zhao
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Baowei Yang
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Tao Li
- Shaanxi Institute for Food and Drug Control, Xi'an, 710065, China
| | - Jianlong Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China.
| | - Daohong Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling, 712100, Shaanxi, China.
| |
Collapse
|
4
|
Brauge T, Midelet-Bourdin G, Soumet C. Viability Detection of Foodborne Bacterial Pathogens in Food Environment by PMA-qPCR and by Microscopic Observation. Methods Mol Biol 2019; 1918:117-128. [PMID: 30580403 DOI: 10.1007/978-1-4939-9000-9_9] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Foodborne pathogens are responsible of foodborne diseases and food poisoning and thus pose a great threat to food safety. These microorganisms can adhere to surface and form a biofilm composed of an extracellular matrix. This extracellular matrix protects bacterial cells from industrial environmental stress factors such as cleaning and disinfection operations. Moreover, during these environmental stresses, many bacterial species can enter a viable but nonculturable (VBNC) state. VBNC cells are characterized by a loss of cultivability on conventional bacteriological agar. This leads to an underestimation of total viable cells in environmental samples, and thus poses a risk for public health. In this chapter, we present a method to detect viable population of foodborne pathogens in industrial environmental samples using a molecular method with a combination of propidium monoazide (PMA) and quantitative PCR (qPCR) and a fluorescence microscopic method associated with the LIVE/DEAD BacLight™ viability stain.
Collapse
Affiliation(s)
- Thomas Brauge
- Laboratory for Food Safety, French Agency for Food, Environmental and Occupational Health and Safety, Boulogne sur Mer, France.,RMT Chlean, Joint Technological Network: Hygienic Design of Production Lines and Equipment, Fougères, France
| | - Graziella Midelet-Bourdin
- Laboratory for Food Safety, French Agency for Food, Environmental and Occupational Health and Safety, Boulogne sur Mer, France.,RMT Chlean, Joint Technological Network: Hygienic Design of Production Lines and Equipment, Fougères, France
| | - Christophe Soumet
- RMT Chlean, Joint Technological Network: Hygienic Design of Production Lines and Equipment, Fougères, France. .,Fougères Laboratory, ANSES, Fougères, France.
| |
Collapse
|
5
|
Culture-free, highly sensitive, quantitative detection of bacteria from minimally processed samples using fluorescence imaging by smartphone. Biosens Bioelectron 2018. [PMID: 29533818 DOI: 10.1016/j.bios.2018.03.006] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A critical unmet need in the diagnosis of bacterial infections, which remain a major cause of human morbidity and mortality, is the detection of scarce bacterial pathogens in a variety of samples in a rapid and quantitative manner. Herein, we demonstrate smartphone-based detection of Staphylococcus aureus in a culture-free, rapid, quantitative manner from minimally processed liquid samples using aptamer-functionalized fluorescent magnetic nanoparticles. The tagged S. aureus cells were magnetically captured in a detection cassette, and then fluorescence was imaged using a smartphone camera with a light-emitting diode as the excitation source. Our results showed quantitative detection capability with a minimum detectable concentration as low as 10 cfu/ml by counting individual bacteria cells, efficiently capturing S. aureus cells directly from a peanut milk sample within 10 min. When the selectivity of detection was investigated using samples spiked with other pathogenic bacteria, no significant non-specific detection occurred. Furthermore, strains of S. aureus from various origins showed comparable results, ensuring that the approach can be widely adopted. Therefore, the quantitative fluorescence imaging platform on a smartphone could allow on-site detection of bacteria, providing great potential assistance during major infectious disease outbreaks in remote and resource-limited settings.
Collapse
|
6
|
Dambrosio A, Normanno G, Storelli A, Barone G, Ioanna F, Errico L, Centoducati G, Storelli MM. Aspects of Vietnamese Sutchi Catfish ( Pangasius Hypophthalmus
) Frozen Fillet Quality: Microbiological Profile and Chemical Residues. J Food Saf 2016. [DOI: 10.1111/jfs.12273] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Angela Dambrosio
- Department of Emergency and Organ Transplant; University of Bari “Aldo Moro”; 70010 Valenzano (BA) Italy
| | - Giovanni Normanno
- Department of Science of Agriculture; Food and the Environment, University of Foggia; Via Napoli 22 71122 Foggia Italy
| | - Arianna Storelli
- Department of Bioscience; Biotechnology and Biopharmaceutical, University of Bari “Aldo Moro”; 70010 Valenzano (BA) Italy
| | - Grazia Barone
- Department of Bioscience; Biotechnology and Biopharmaceutical, University of Bari “Aldo Moro”; 70010 Valenzano (BA) Italy
| | - Federica Ioanna
- Doctoral School of Biomedical Sciences; University of Bari “Aldo Moro” Piazza Umberto I 1; 70121 Bari Italy
| | - Luigi Errico
- Lepore Mare srl; via dell'Agricoltura 22/24 72015 Fasano (BR) Italy
| | - Gerardo Centoducati
- Department of Science of Soil; Plant and Food, University of Bari “Aldo Moro”; 70126 Bari Italy
| | - Maria M. Storelli
- Department of Bioscience; Biotechnology and Biopharmaceutical, University of Bari “Aldo Moro”; 70010 Valenzano (BA) Italy
| |
Collapse
|
7
|
Brauge T, Sadovskaya I, Faille C, Benezech T, Maes E, Guerardel Y, Midelet-Bourdin G. Teichoic acid is the major polysaccharide present in theListeria monocytogenesbiofilm matrix. FEMS Microbiol Lett 2015; 363:fnv229. [DOI: 10.1093/femsle/fnv229] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/25/2015] [Indexed: 12/30/2022] Open
|
8
|
Combrouse T, Sadovskaya I, Faille C, Kol O, Guérardel Y, Midelet-Bourdin G. Quantification of the extracellular matrix of the Listeria monocytogenes biofilms of different phylogenic lineages with optimization of culture conditions. J Appl Microbiol 2013; 114:1120-31. [PMID: 23317349 DOI: 10.1111/jam.12127] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Revised: 12/18/2012] [Accepted: 12/29/2012] [Indexed: 12/15/2022]
Abstract
AIMS The purpose of this study was to quantify the extracellular matrix of Listeria monocytogenes biofilm. A preliminary study was carried out to establish a relationship between phylogenetic lineage of 27 strains and their ability to form biofilm in various conditions. METHODS AND RESULTS Biofilm formation on microtitre plates of 27 strains of L. monocytogenes belonging to lineages I or II was evaluated in different conditions [two temperatures (37 and 22°C) and two media (tryptone soy broth yeast extract medium (TSBYE) and MCDB 202 defined medium)] using crystal violet assay. Lineage II strains produced significantly more biofilm than lineage I strains. In microtitre plates assay, biofilm quantities were greater in MCDB 202 vs TSBYE medium [confirmed by scanning electron microscopy (SEM) analysis] and at 37 vs 22°C. Cultivable bacteria from biofilm population on Petri dishes were enumerated in greater quantities in TSBYE than in MCDB 202 medium. The SEM investigation established that L. monocytogenes biofilms produce extracellular matrix in both media at 37°C. The amount of exopolymers in the extracellular matrix and the pH values were significantly higher in TSBYE than in MCDB 202 medium. The exception was the ScottA strain that presented similar pH values and exopolymer contents in both media. Proteins were the most abundant exopolymer components, followed by DNA and polysaccharides. CONCLUSIONS The interpretation of results of biofilm quantification was depending on the growth conditions, the viability of the bacteria and the analysis method. The quantities of proteins, DNA and polysaccharides were different according to the strains and the medium. SIGNIFICANCE AND IMPACT OF THE STUDY This study screened the potential of a wide panel of L. monocytogenes strains to synthesize exopolymers in biofilm growing condition. The characterization of L. monocytogenes biofilm composition may help to develop new strategies to prevent the formation of biofilms and to remove the biofilms.
Collapse
Affiliation(s)
- T Combrouse
- Université Lille1, UGSF (Unité de Glycobiologie Structurale et Fonctionnelle), Université des Sciences et Technologies de Lille, Villeneuve d'Ascq, France
| | | | | | | | | | | |
Collapse
|
9
|
Midelet-Bourdin G, Copin S, Leleu G, Malle P. Determination of Listeria monocytogenes growth potential on new fresh salmon preparations. Food Control 2010. [DOI: 10.1016/j.foodcont.2010.03.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
10
|
Han SR, Hyeon JY, Kim HY, Park JS, Heo S, Shin HC, Seo KH. Evaluation of Conventional Culture Methods and Validation of Immunoassays for Rapid Detection of Listeria monocytogenes in Dairy and Processed Foods. Korean J Food Sci Anim Resour 2008. [DOI: 10.5851/kosfa.2008.28.5.616] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
|
11
|
Midelet-Bourdin G, Beaufort A, Leroi F, Cardinal M, Rudelle S, Leleu G, Copin S, Malle P. Impact of -2 degrees C superchilling before refrigerated storage (4 and 8 degrees C) on the microbiological and sensory qualities of cold-smoked salmon. J Food Prot 2008; 71:2198-207. [PMID: 19044261 DOI: 10.4315/0362-028x-71.11.2198] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Detection and enumeration of Listeria monocytogenes and total spoilage bacteria in 40 batches of cold-smoked salmon (one batch = 42 products from the same day of manufacture) straight from the factory were carried out. If L. monocytogenes was detected in at least one of the nine samples analyzed on receipt at the laboratory, 9 products of the same batch were stored for 10 days at 4 degrees C, which was followed by 18 days at 8 degrees C (control), 12 products were superchilled for 14 days at -2 degrees C, and 12 other products were superchilled for 28 days at -2 degrees C and then stored under the same conditions as the control was stored. L. monocytogenes was detected in 7% of the 40 batches analyzed immediately after receipt at the laboratory. L. monocytogenes prevalence was similar (approximately 25%) throughout the storage at 4 and 8 degrees C, both in control and super-chilled products at -2 degrees C for 14 days. After superchilling for 28 days at -2 degrees C, L. monocytogenes was found in 9% of products, and in 39% at the end of the storage above 0 degree C. Moreover, the L. monocytogenes count was higher after 3 and 4 weeks of storage at 4 and 8 degrees C in products superchilled 28 days at -2 degrees C than in control products or in products superchilled for 14 days. Serotype 1/2a-3a and nine genetic groups were identified and found throughout the storage scenario. At the end of shelf life, sensory characteristics of products superchilled for 28 days at -2 degrees C were slightly modified. A decrease in firmness associated with increased tearing of salmon slices was observed as well as a slight amine odor.
Collapse
Affiliation(s)
- Graziella Midelet-Bourdin
- Agence Française de Sécurité Sanitaire des Aliments, Laboratoire d'Etudes et de Recherches sur les produits de la pêche, Boulogne sur Mer, France.
| | | | | | | | | | | | | | | |
Collapse
|