ArticleBioMed research international2014
Phenotypic and genotypic characterization of atypical Listeria monocytogenes and Listeria innocua isolated from swine slaughterhouses and meat markets.
Article in BioMed research international, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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15 citing papers in PubMed, 26 citations in OpenAlex.
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- High Prevalence of Virulence-Associated Genes and Length Polymorphism inPathogens (Basel, Switzerland) · 2024Article
- Phenotypic and Genotypic Characteristics of Non-HemolyticFoods (Basel, Switzerland) · 2023Article
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- Virulence Characterization ofPathogens (Basel, Switzerland) · 2020Article
- Prevalence, virulence genes, and antimicrobial resistance profile ofJournal of advanced veterinary and animal research · 2020Article
- Genetic Analysis of the Listeria Pathogenicity Island 1 of Listeria monocytogenes 1/2a and 4b Isolates.Current microbiology · 2018Article
- Phage Therapy: What Have We Learned?Viruses · 2018Review
- Spontaneous Loss of Virulence in Natural Populations of Listeria monocytogenes.Infection and immunity · 2017Article
- Characteristics and distribution of Listeria spp., including Listeria species newly described since 2009.Applied microbiology and biotechnology · 2016Review
- Phylogenetic analysis of the Listeria monocytogenes based on sequencing of 16S rRNA and hlyA genes.Molecular biology reports · 2014Article
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Authors and funding
10 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In the last decade, atypical Listeria monocytogenes and L. innocua strains have been detected in food and the environment. Because of mutations in the major virulence genes, these strains have different virulence intensities in eukaryotic cells. In this study, we performed phenotypic and genotypic characterization of atypical L. monocytogenes and L. innocua isolates obtained from swine slaughterhouses and meat markets. Forty strains were studied, including isolates of L. monocytogenes and L. innocua with low-hemolytic activity. The isolates were characterized using conventional phenotypic Listeria identification tests and by the detection and analysis of L. monocytogenes-specific genes. Analysis of 16S rRNA was used for the molecular identification of the Listeria species. The L. monocytogenes isolates were positive for all of the virulence genes studied. The atypical L. innocua strains were positive for hly, plcA, and inlC. Mutations in the InlC, InlB, InlA, PI-PLC, PC-PLC, and PrfA proteins were detected in the atypical isolates. Further in vitro and transcriptomic studies are being developed to confirm the role of these mutations in Listeria virulence.
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