Candida zeylanoides causing candidiasis as tinea cruris

Area of Science:

• Mycology
• Dermatology
• Infectious Diseases

Background:

• Candida species are known opportunistic pathogens.
• Tinea cruris is a common fungal infection of the groin area.
• Specific etiological agents of candidiasis require detailed characterization.

Purpose of the Study:

• To identify and characterize Candida zeylanoides as a cause of candidiasis.
• To describe the clinical presentation of candidiasis due to Candida zeylanoides.
• To evaluate the efficacy of ketoconazole in treating this infection.

Main Methods:

• Microscopic and macroscopic characterization of Candida zeylanoides isolates.
• Biochemical tests including carbon and nitrogen source assimilation.
• DNA G+C content analysis.
• Animal model (guinea pig) infection studies.
• Clinical observation and treatment evaluation.

Main Results:

• Candida zeylanoides exhibited characteristic growth patterns and colony morphology.
• The yeast produced pseudohyphae but not true hyphae, and lacked ascospore/bolospore production.
• Positive fermentation of carbon sources and specific assimilation patterns were observed.
• Guinea pigs were successfully infected, displaying clinical signs of tinea cruris.
• The infection presented as pink, infiltrative erythema with papules, vesicles, and scales.

Conclusions:

• Candida zeylanoides is identified as an etiological agent of candidiasis presenting as tinea cruris.
• The morphological and biochemical profile of the yeast is described.
• Ketoconazole demonstrated efficacy in treating the induced candidiasis.