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Published on: February 19, 2019
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Studies on the Virulence of Staphylococcus hyicus
Robert P Allaker1, David H Lloyd1, Anne I Lamport1
1Dermatology Unit, Royal Veterinary College, Hawkshead Lane, North Mymms, Hertfordshire, U.K.
Veterinary Dermatology
|October 14, 2021
Summary
The exfoliative skin reaction in piglets caused by Staphylococcus hyicus may indicate the isolate's virulence. This finding helps in understanding the pathogenicity of Staphylococcus hyicus infections.
Area of Science:
- Veterinary Dermatology
- Bacterial Pathogenesis
- Swine Infectious Diseases
Background:
- Staphylococcus hyicus is a significant swine pathogen.
- Understanding virulence factors is crucial for disease control.
- Previous research has identified various Staphylococcus hyicus toxins.
Purpose of the Study:
- To investigate the dermal pathogenicity of Staphylococcus hyicus isolates in piglets.
- To identify potential indicators of Staphylococcus hyicus virulence.
- To correlate skin reactions with isolate-specific virulence.
Main Methods:
- Concentration of culture supernatants from six Staphylococcus hyicus isolates using ultrafiltration.
- Intradermal injection of concentrated supernatants into the abdominal skin of 2-week-old piglets.
- Observation and documentation of induced skin reactions, including erythema and exfoliation with crusting.
Main Results:
- Two distinct skin reactions were observed: focal erythema and exfoliative dermatitis with crusting.
- Significant differences in the severity and incidence of reactions were noted among the six isolates.
- The exfoliative reaction was more pronounced and consistently observed with certain isolates.
Conclusions:
- The exfoliative skin reaction induced by Staphylococcus hyicus culture supernatants serves as a potential indicator of isolate virulence.
- This finding aids in the assessment of Staphylococcus hyicus pathogenicity.
- Further studies can utilize this reaction to evaluate novel control strategies.
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