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Evaluation of the dermatophyte test medium RapidVet-D

J Guillot1, L Latié, M Deville

  • 1UMR 956 INRA-AFSSA-ENVA Biologie Moléculaire et Immunologie Parasitaires et Fongiques, Ecole Nationale Vétérinaire d'Alfort, France. j.guillot@vet-alfort.fr

Veterinary Dermatology
|June 26, 2001
PubMed

Insights

The RapidVet-D dermatophyte test medium (DTM) accurately detects fungal infections. Optimal results for diagnosing dermatophytosis in guinea pigs were achieved at 27 degrees C, with faster color changes indicating positive results.

Area of Science:

  • Veterinary Mycology
  • Diagnostic Microbiology
  • Dermatology

Background:

  • Dermatophytosis is a common fungal infection affecting animals and humans.
  • Accurate and rapid diagnostic methods are crucial for effective treatment.
  • The dermatophyte test medium (DTM) is a widely used tool for identifying dermatophytes.

Purpose of the Study:

  • To evaluate the performance of the RapidVet-D dermatophyte test medium (DTM).
  • To determine the optimal incubation temperature for DTM.
  • To assess the diagnostic accuracy of DTM for common dermatophyte species.

Main Methods:

  • Hair samples from experimentally infected guinea pigs were used.
  • Three dermatophyte species (Microsporum canis, Trichophyton mentagrophytes, T. equinum) were tested.
  • DTM substrates were incubated at various temperatures (18-37°C) and examined daily for 15 days.

Main Results:

  • Incubation temperature significantly influenced the rapidity of color change in DTM.
  • The optimal incubation temperature was determined to be 27°C.
  • At 27°C, positive results were observed within 3-5 days, depending on the dermatophyte species.

Conclusions:

  • RapidVet-D demonstrates efficient performance in detecting dermatophyte infections.
  • Incubation temperature is a critical factor for optimizing DTM results.
  • DTM provides a rapid and reliable method for diagnosing dermatophytosis in veterinary settings.

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