The exosubstance of Rhodococcus equi in a prepurified form strongly enhanced the hemolytic effect of certain strains of Listeria monocytogenes. The strains which produced positive synergic hemolysis with this exosubstance were also pathogenic for guinea pigs and white mice. The other strains, which remained nonhemolytic in the presence of the R. equi. exosubstance, were apathogenic for those animals. A routine test was devised for the in vitro determination of the pathogenicity of L. monocytogenes strains.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC272125 | PMC |
| http://dx.doi.org/10.1128/jcm.15.3.503-507.1982 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Draft genome sequence of BDSA strain isolated from ready-to-eat chicken product in Dhaka, Bangladesh.
Microbiol Resour Announc
January 2025
Department of Microbiology, University of Dhaka, Dhaka, Bangladesh.
We present the genome of BDSA isolated from ready-to-eat (RTE) meat collected in Dhaka, Bangladesh. The genome displays the Listeria pathogenicity island 1 and virulence, stress response, and antimicrobial resistance genes. It was phylogenetically classified as ST7, and clustered with serotype 1/2a belonging to lineage II.
View Article and Find Full Text PDFNovel primers drive accurate SYBR Green PCR detection of Listeria monocytogenes and Listeria innocua in cultures and mushrooms.
Sci Rep
January 2025
Microbial Safety Division, National Institute of Agricultural Sciences, Rural Development Administration, Wanju, 55365, Republic of Korea.
The close genetic resemblance between Listeria monocytogenes and Listeria innocua, combined with their presence in similar environments, poses challenges for species-specific detection in food products. Ensuring food safety through microbiological standards necessitates reliable detection of pathogens like L. monocytogenes and L.
View Article and Find Full Text PDFMultilocus Sequence Typing and Antimicrobial Susceptibility of Isolated from Foods Surveyed in Kosovo.
Microorganisms
November 2024
Department of Biochemistry, Genetics and Microbiology, University of Pretoria, Private Bag X20, Hatfield, Pretoria 0028, South Africa.
In the absence of data on the reporting of resistance to antibiotics, we sought to determine which clonal complexes (CCs)/sequence types (STs) circulate in the food chain in Kosovo and to determine their antibiogram profiles to a panel of 18 antibiotics. From a total of 114 isolates, 21 different typical STs were identified by multilocus sequence typing (MLST). Each isolate derived from the food categories was subjected to tests to verify its susceptibility to the selected antibiotics according to the designed Sensititre GPN3F panel.
View Article and Find Full Text PDFScreening and Genomic Profiling of Antimicrobial Bacteria Sourced from Poultry Slaughterhouse Effluents: Bacteriocin Production and Safety Evaluation.
Genes (Basel)
December 2024
Departamento de Nutrición y Ciencia de los Alimentos (NUTRYCIAL), Sección Departamental de Nutrición y Ciencia de los Alimentos (SD-NUTRYCIAL), Facultad de Veterinaria, Universidad Complutense de Madrid (UCM), Avenida Puerta de Hierro, s/n, 28040 Madrid, Spain.
Antimicrobial-resistant (AMR) pathogens represent a serious threat to public health, particularly in food production systems where antibiotic use remains widespread. As a result, alternative antimicrobial treatments to antibiotics are essential for effectively managing bacterial infections. This study aimed to identify and characterize novel antimicrobial peptides produced by bacteria, known as bacteriocins, as well as to recognize safe bacteriocin-producing strains, sourced from poultry slaughterhouse effluents.
View Article and Find Full Text PDFNatural Mutation of PrfA K10N/T151A Enhances Serotype 4h Virulence.
Foodborne Pathog Dis
January 2025
College of Biological Sciences and Technology, Yangzhou University, Yangzhou, China.
PrfA is a key virulence regulator for (Lm) responding to host environment. Here we report that the natural mutation in PrfA enhanced the pathogenicity of hypervirulent serotype 4h . We characterized the phylogenetic tree of PrfA, and found that PrfA prevalently distributed in all serotype 4h isolates.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!