Transferable erythromycin resistance in Listeria spp. isolated from food
Article Abstract:
Food isolates of the erythromycin-resistant Listeria innocua and Listeria monocytogenes carry the ermC genes which can be transferred to other Listeria species. The genes are not associated with plasmids and are transferred to recepient L. monocytogenes, Listeria ivanovii, and Enterococcus faecalis cells via conjugation. A PCR assay and a subsequent hybridization of the PCR product with labeled DNA confirms the presence of the ermC genes in the isolates. The ermC genes code for rRNA methylases that confer resistance to erythromycin.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1996
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Lectin reactivity and virulence among strains of Listeria monocytogenes determined in vitro using the enterocyte-like cell line Caco-2
Article Abstract:
The human enterocyte-like cell line Caco-2 is used to study lectin virulence and reactivity among strains of Listeria monocytogenes determined in vitro. The study involves the serotyping, characterization and testing of 46 cultures of L. monocytogenes. Results show the involvement of surface carbohydrates in the virulence of the strains. Moreover, most strains were able to infect Caco-2 cells.
Publication Name: Microbiology
Subject: Biological sciences
ISSN: 1350-0872
Year: 1998
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Genetic basis of tetracycline resistance in food-borne isolates of Listeria innocua
Article Abstract:
Thegenetic basis of the tetracycline resistance in commensal food-borne isolates of Listria innocua was studied. DNA-DNA hybridization experiments were performed to investigate if the innocua strains contained the tetracycline determinants described in gram-positive bacteria. It was found that Listeria innocua can operate as a reservoir of tetracycline resistance genes for other bacteria.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1993
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