Phylogenetic and epidemiological relatedness among transferable plasmids belonging to the IncC, IncM and IncH incompatibility groups has been studied by DNA-DNA filter hydridization. Hybridization was carried out on nitrocellulose microfilters, at low temperature, in formamide and under paraffin oil. The degree of hybridization among plasmids belonging to the IncC and IncM groups supported the conclusions drawn from genetic classification. Studies on relatedness among plasmids belonging to the IncH group allowed their classification into three phylogenetic sub-groups. Comparison of DNA sequences of three plasmids sharing the same genetic properties and isolated from different bacterial species suggested an epidemiological spread of the same plasmid.
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http://dx.doi.org/10.1099/00221287-104-2-269 | DOI Listing |
PLoS Negl Trop Dis
January 2025
Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, Texas, United States of America.
Background: Machupo virus (MACV) is a New World mammarenavirus (hereafter referred to as "arenavirus") and the etiologic agent of Bolivian hemorrhagic fever (BHF). No vaccine or antiviral therapy exists for BHF, which causes up to 35% mortality in humans. New World arenaviruses evolve separately in different locations.
View Article and Find Full Text PDFMicrob Drug Resist
January 2025
Department of Medical Microbiology, Ankara University School of Medicine, Ankara, Türkiye.
Colistin- and carbapenem-resistant (ColR CrKp) cause important health problems in pediatric intensive care units (PICUs) due to its ability to harbor multiple resistance genes and spread of high-risk clones. In this study, molecular epidemiological characteristics, transferable resistance genes, and alterations of ColR CrKp isolated from PICU were investigated. Isolates were identified by MALDI-TOF MS, and antimicrobial susceptibility tests were performed using disk diffusion method, gradient strip test, and broth microdilution method.
View Article and Find Full Text PDFBMC Genom Data
January 2025
The Fifth Affiliated Hospital, Southern Medical University, Guangzhou, China.
Objectives: Pseudomonas aeruginosa, a Gram-negative opportunistic pathogen, is frequently associated with multidrug resistance and global epidemic outbreaks, contributing significantly to morbidity and mortality in hospitalized patients. However, P. aeruginosa belonging to the sequence type (ST) 16 was rarely reported.
View Article and Find Full Text PDFNPJ Antimicrob Resist
January 2024
Australian Institute for Microbiology & Infection, University of Technology Sydney, Ultimo, NSW, Australia.
Acinetobacter baumannii is a Gram-negative pathogen responsible for hospital-acquired infections with high levels of antimicrobial resistance (AMR). The spread of multidrug-resistant A. baumannii strains has become a global concern.
View Article and Find Full Text PDFBMC Genomics
January 2025
Australian Institute for Microbiology and Infection, University of Technology Sydney, Ultimo, NSW, Australia.
Background: F plasmids are abundant in E. coli, carrying a variety of genetic cargo involved in fitness, pathogenicity, and antimicrobial resistance. ColV and pUTI89-like plasmids have drawn attention for their potential roles in various forms of extra-intestinal pathogenicity.
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