Genetic Diversity of Clostridium perfringens Type A Isolates
Author Information
Author(s): Anders Johansson, Anna Aspan, Elisabeth Bagge, Viveca Båverud, Björn E Engström, Karl-Erik Johansson
Primary Institution: National Veterinary Institute, Uppsala, Sweden
Hypothesis
What is the genetic diversity of Clostridium perfringens type A isolates from various sources?
Conclusion
The study found a wide genetic diversity among C. perfringens isolates from different sources, with related isolates showing high genetic similarity.
Supporting Evidence
- 56 distinct PFGE types were identified among the isolates.
- Almost all clusters with similar patterns comprised isolates with a known epidemiological correlation.
- Isolates from food poisoning outbreaks carried the enterotoxin gene (cpe).
- Two genetically different populations of the cpb2 gene were identified.
Takeaway
Scientists looked at germs from animals and food to see how different they are. They found that germs from the same outbreak are very similar, but those from different places can be quite different.
Methodology
The study used pulsed-field gel electrophoresis (PFGE) to analyze the genetic diversity of isolates and PCR to detect specific toxin genes.
Limitations
13% of the isolates were non-typable due to DNA degradation.
Participant Demographics
Isolates were collected from various sources including poultry, pigs, horses, sheep, roedeer, wild birds, food poisoning outbreaks, and environmental samples.
Digital Object Identifier (DOI)
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