PCR test for Microsporum canis identification.

Area of Science:

• Medical Mycology
• Molecular Diagnostics
• Veterinary Dermatology

Background:

• Microsporum canis is a prevalent zoophilic fungus causing human dermatophytoses like tinea capitis and tinea corporis.
• Accurate identification of M. canis is crucial for effective treatment and tracing infection origins.

Purpose of the Study:

• To develop and evaluate a diagnostic Polymerase Chain Reaction (PCR) test for the specific detection of Microsporum canis.
• To assess the utility of the PCR test in identifying M. canis from clinical isolates, animal samples, and human specimens.

Main Methods:

• A Microsporum canis-specific PCR assay was designed and tested.
• The assay was validated using 130 clinical dermatophyte isolates, 10 yeast/mold isolates, 12 animal hair/skin samples, and 35 patient specimens.

Main Results:

• The PCR test successfully detected all M. canis-positive pure cultures, animal specimens, and clinical samples.
• No cross-reactivity was observed with other fungal species or M. canis-negative samples.
• The diagnostic PCR test demonstrated 100% specificity and sensitivity for M. canis identification.

Conclusions:

• The developed PCR test is a highly sensitive and specific tool for identifying Microsporum canis.
• This molecular diagnostic method is effective for direct application to patient specimens and animal samples, facilitating rapid diagnosis and source tracking.