ArticleApplied and environmental microbiology2011
Diverse geno- and phenotypes of persistent Listeria monocytogenes isolates from fermented meat sausage production facilities in Portugal.
Article in Applied and environmental microbiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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17 citing papers in PubMed.
- Article
- Genomic Analysis of Prophages Recovered fromMicroorganisms · 2021Article
- In-Depth Longitudinal Study of Listeria monocytogenes ST9 Isolates from the Meat Processing Industry: Resolving Diversity and Transmission Patterns Using Whole-Genome Sequencing.Applied and environmental microbiology · 2020Article
- Functional Properties of Food Origin Lactobacillus in the Gastrointestinal Ecosystem-In Vitro Study.Probiotics and antimicrobial proteins · 2019Article
- Characterization of Listeria prophages in lysogenic isolates from foods and food processing environments.PloS one · 2019Article
- Review
- Genome Sequences of Listeria Phages Induced from Lysogenic Isolates of Listeria monocytogenes from Seafood and a Seafood Processing Environment in Thailand.Genome announcements · 2018Article
- Article
- Risk Factors and Level ofFrontiers in microbiology · 2018Article
- Genomic Characterization Helps Dissecting an Outbreak of Listeriosis in Northern Italy.PLoS currents · 2017Article
- Potential Impact of the Resistance to Quaternary Ammonium Disinfectants on the Persistence of Listeria monocytogenes in Food Processing Environments.Frontiers in microbiology · 2016Review
- Whole-Genome Sequencing Allows for Improved Identification of Persistent Listeria monocytogenes in Food-Associated Environments.Applied and environmental microbiology · 2015Article
- Genomic characterization of novel Listeria monocytogenes serotype 4b variant strains.PloS one · 2014Article
- Ruminant rhombencephalitis-associated Listeria monocytogenes strains constitute a genetically homogeneous group related to human outbreak strains.Applied and environmental microbiology · 2013Article
- Examination of food chain-derived Listeria monocytogenes strains of different serotypes reveals considerable diversity in inlA genotypes, mutability, and adaptation to cold temperatures.Applied and environmental microbiology · 2013Article
- Biofilm Formation among Clinical and Food Isolates of Listeria monocytogenes.International journal of microbiology · 2013Article
- Listeria monocytogenes grown at 7° C shows reduced acid survival and an altered transcriptional response to acid shock compared to L. monocytogenes grown at 37° C.Applied and environmental microbiology · 2012Article
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Abstract
The persistence of Listeria monocytogenes in food-associated environments represents a key factor in transmission of this pathogen. To identify persistent and transient strains associated with production of fermented meat sausages in northern Portugal, 1,723 L. monocytogenes isolates from raw material and finished products from 11 processors were initially characterized by random amplification of polymorphic DNA (RAPD), PCR-based molecular serotyping, and epidemic clone characterization, as well as cadmium, arsenic, and tetracycline resistance typing. Pulsed-field gel electrophoresis (PFGE) typing of 240 representative isolates provided evidence for persistence of L. monocytogenes for periods of time ranging from 10 to 32 months for all seven processors for which isolates from different production dates were available. Among 50 L. monocytogenes isolates that included one representative for each PFGE pattern obtained from a given sample, 12 isolates showed reduced invasion efficiency in Caco-2 cells, including 8 isolates with premature stop codons in inlA. Among 41 isolates representing sporadic and persistent PFGE types, 22 isolates represented lysogens. Neither strains with reduced invasion nor lysogens were overrepresented among persistent isolates. While the susceptibility of isolates to lysogenic phages also did not correlate with persistence, it appeared to be associated with molecular serotype. Our data show the following. (i) RAPD may not be suitable for analysis of large sets of L. monocytogenes isolates. (ii) While a large diversity of L. monocytogenes subtypes is found in Portuguese fermented meat sausages, persistence of L. monocytogenes in this food chain is common. (iii) Persistent L. monocytogenes strains are diverse and do not appear to be characterized by unique genetic or phenotypic characteristics.
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