Clostridium difficile: Clonality and Pathogenicity Locus Diversity
Author Information
Author(s): Dingle Kate E., Griffiths David, Didelot Xavier, Evans Jessica, Vaughan Alison, Kachrimanidou Melina, Stoesser Nicole, Jolley Keith A., Golubchik Tanya, Harding Rosalind M., Peto Tim E., Fawley Warren, Walker A. Sarah, Wilcox Mark, Crook Derrick W.
Primary Institution: Nuffield Department of Clinical Laboratory Sciences, Oxford University, John Radcliffe Hospital, Oxford, United Kingdom
Hypothesis
The study aims to define the TcdB-RBD and TcdC variants for 1290 recent clinical isolates and determine their relationship to the C. difficile population structure.
Conclusion
The study establishes a baseline of C. difficile MLST data and demonstrates a largely congruent association between clade and PaLoc tcdB-RBD and tcdC variants.
Supporting Evidence
- The study identified 69 sequence types among the 1290 clinical isolates.
- Five clades of C. difficile were defined, each associated with specific tcdB and tcdC variants.
- Homologous recombination was found to occur at a lower rate than mutation in the C. difficile population.
Takeaway
This study looked at a lot of samples of a germ that can make people very sick, to understand how it spreads and why some types are more dangerous than others.
Methodology
The study used multilocus sequence typing (MLST) to genotype a collection of clinical isolates and analyzed the population structure using NeighborNet and ClonalFrame.
Limitations
The study focused on isolates from a single geographic location, which may limit the generalizability of the findings.
Participant Demographics
The isolates were collected from patients with Clostridium difficile infection in Oxfordshire, UK.
Digital Object Identifier (DOI)
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