Search results for "Internalin"

showing 3 items of 3 documents

Truncated internalin A and asymptomatic Listeria monocytogenes carriage: in vivo investigation by allelic exchange

2004

ABSTRACT Allelic exchange of the region coding for the C terminus of InlA between one epidemic (with an 80-kDa InlA) and one asymptomatic (with a 47-kDa InlA) carriage Listeria monocytogenes strain confirmed the need for this region for internalin entry in vitro. Interestingly, restoration of internalin A functionality did not result in full virulence in chicken embryo assays.

Molecular Sequence DataImmunologyVirulenceChick Embryomedicine.disease_causeMicrobiologyMicrobiology03 medical and health sciencesBacterial ProteinsListeria monocytogenesIn vivomedicineAnimalsHumansInternalinAlleleAlleles030304 developmental biology0303 health sciencesCellular Microbiology: Pathogen-Host Cell Molecular InteractionsBase SequenceVirulencebiology030306 microbiologyMicrobiology and Parasitologybacterial infections and mycosesbiology.organism_classificationListeria monocytogenesVirologyMicrobiologie et ParasitologieIn vitro3. Good healthInfectious DiseasesCarriage[SDV.MP]Life Sciences [q-bio]/Microbiology and ParasitologyParasitologyCaco-2 CellsBacteria
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Distribution and characteristics of Listeria monocytogenes isolates from surface waters of the South Nation River Watershed, Ontario, Canada

2007

ABSTRACT Listeria monocytogenes is a facultative intracellular pathogen thought to be widely distributed in the environment. We investigated the prevalence and characteristics of L. monocytogenes isolates from surface waters derived from catchments within the South Nation River watershed (Ontario, Canada). This watershed is dominated by urban and rural development, livestock and crop production, and wildlife habitats. From June to November 2005, a total of 314 surface water samples were collected biweekly from 22 discrete sampling sites characterized by various upstream land uses. Presumptive Listeria spp. were isolated using a selective enrichment and isolation procedure, and 75 L. monocyt…

SerotypeVeterinary medicineGenotypeVirulenceMicrobial Sensitivity TestsBiologymedicine.disease_causeApplied Microbiology and Biotechnology03 medical and health sciencesRiversListeria monocytogenesGenotypeEnvironmental MicrobiologymedicineAnimalsHumansInternalinPathogenEcosystemUrban Renewal030304 developmental biologyOntario2. Zero hunger[SDV.EE]Life Sciences [q-bio]/Ecology environment0303 health sciencesVirulenceEcology030306 microbiologybusiness.industryEcologyLISTERIA MONOCYTOGENESAgriculture15. Life on landbiology.organism_classification6. Clean waterAnti-Bacterial AgentsBacterial Typing TechniquesCulture Media3. Good healthPhenotypeListeriaSocial PlanningLivestockSeasonsbusinessFood ScienceBiotechnology
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Analysis of Multilocus Sequence Typing and Virulence Characterization of Listeria monocytogenes Isolates from Chinese Retail Ready-to-Eat Food

2016

Eighty Listeria monocytogenes isolates were obtained from Chinese retail ready-to-eat (RTE) food and were previously characterized with serotyping and antibiotic susceptibility tests. The aim of this study was to characterize the subtype and virulence potential of these L. monocytogenes isolates by multilocus sequence typing (MLST), virulence-associate genes, epidemic clones (ECs), and sequence analysis of the important virulence factor: internalin A (inlA). The result of MLST revealed that these L. monocytogenes isolates belonged to 14 different sequence types (STs). With the exception of four new STs (ST804, ST805, ST806, and ST807), all other STs observed in this study have been associat…

inlA0301 basic medicineMicrobiology (medical)SerotypeSequence analysis030106 microbiologylcsh:QR1-502Virulenceepidemic clonesBiologymedicine.disease_causeMicrobiologylcsh:MicrobiologyVirulence factorEpidemic cloneMicrobiology03 medical and health sciencesListeria monocytogenesmedicineInternalinPathogenOriginal ResearchPMSCvirulence genesbacterial infections and mycosesListeria monocytogenes030104 developmental biologyMultilocus sequence typingMLSTFrontiers in Microbiology
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