Gram-negative anaerobic rods isolated in The Netherlands and Poland from extraintestinal and intestinal sources were identified as Bacteroides fragilis (n = 210) on the basis of Gram staining, growth on selective Bacteroides Bile Esculine medium as black colonies, and biochemical characteristics. PCR-mediated assessment of the presence of the B. fragilis enterotoxin (fragilysin) gene in all strains identified 12 so-called enterotoxin-positive B. fragilis (ETBF) strains (15%) among the Dutch strains and 16 ETBF among the Polish strains (13%). NotI Pulsed Field Gel Electrophoresis (PFGE) analysis revealed that these strains are genetically heterogeneous. Among the Dutch strains an identical pair and a set of four indiscriminate strains were identified. This suggests that limited nosocomial spread of ETBF can be observed. However, there was no identity obeserved when strains from The Netherlands were compared to their Polish counterparts. The antimicrobial susceptibility testing revealed that one Polish strain isolated from a patient with antibiotic associated diarrhoeae (AAD) was simultaneously highly resistant to clindamycin and cefoxitin (MIC>256 mg/L). Two other strains appeared to be clindamycin resistant. All resistant strains had different PFGE patterns, suggesting that resistance development occurred at independent occassions.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
A Cedrane and a Fusarin from the Algicolous Fungus Fusarium graminearum 12Ⅱ2N and Response to Mycoparasitism.
Chem Biodivers
January 2025
Yantai Institute of Coastal Zone Research, Coastal biology and Bioresource Utilization, 17 Chunhui Road, 264003, Yantai, CHINA.
The fungal genus Fusarium is a treasure-trove of structurally diverse secondary metabolites, contributed greatly by marine-derived strains. A new cedrane sesquiterpene, fusacedrol (1), and a new fusarin member, fusarin M (2), were isolated from F. graminearum 12Ⅱ2N that was isolated as an endophyte from the marine brown alga Sargassum sp.
View Article and Find Full Text PDFComparison of taurolidine with 4% ethylenediaminetetraacetic acid on antimicrobial lock effectiveness: An experimental study.
JPEN J Parenter Enteral Nutr
January 2025
3rd Department of Internal Medicine-Metabolic Care and Gerontology, University Hospital and Medical Faculty in Hradec Kralove, Charles University in Prague, Hradec Kralove, Czech Republic.
Background: Antimicrobial lock therapy is recommended for preventing and treating catheter-related bloodstream infections, but different solutions have uncertain efficacy.
Methods: Two locks, 1.35% taurolidine and 4% ethylenediaminetetraacetic acid (EDTA), were tested on Staphylococcus epidermidis, Staphylococcus aureus, methicillin-resistant S.
A novel method for expressing and purifying large quantities of functional and stable human voltage-gated proton channel (hH1).
Protein Sci
February 2025
Cell Physiology and Molecular Biophysics Department, Center for Membrane Protein Research, Texas Tech University Health Sciences Center, Lubbock, Texas, USA.
Purifying membrane proteins has been the limiting step for studying their structure and function. The challenges of the process include the low expression levels in heterologous systems and the requirement for their biochemical stabilization in solution. The human voltage-gated proton channel (hH1) is a good example of that: the published protocols to express and purify hH1 produce low protein quantities at high costs, which is an issue for systematically characterizing its structure and function.
View Article and Find Full Text PDFCarbon monoxide-oxidising Pseudomonadota on volcanic deposits.
Environ Microbiome
January 2025
School of Biological Sciences, University of East Anglia, Norwich, NR4 7TJ, UK.
Carbon monoxide (CO) oxidising microorganisms are present in volcanic deposits throughout succession, with levels of vegetation and soil influencing the communities present. Carboxydovores are a subset of CO oxidisers that use CO as an energy source, which raises questions about the physiological and metabolic features that make them more competitive in harsh volcanic ecosystems. To address these questions, samples were taken from volcanic strata formed by eruptions from Calbuco Volcano (Chile) in 2015 (tephra) and 1917 (soil).
View Article and Find Full Text PDFFitness and adaptive evolution of a Rhodococcus sp. harboring dioxin-catabolic plasmids.
World J Microbiol Biotechnol
January 2025
Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, 72 Binhai Road, Jimo, Qingdao, 266237, China.
Catabolic plasmids are critical factors in the degradation of recalcitrant xenobiotics, such as dioxins. Understanding the persistence and evolution of native catabolic plasmids is pivotal for controlling their function in microbial remediation. Here, we track the fitness and evolution of Rhodococcus sp.
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!