Current knowledge of Trichosporon spp. and Trichosporonosis

Area of Science:

• Medical Mycology
• Infectious Diseases
• Molecular Biology

Background:

• Trichosporon spp. are fungi commonly found in nature.
• While typically causing superficial infections, they are increasingly recognized as opportunistic pathogens causing invasive infections, particularly in cancer patients and those undergoing invasive procedures.
• Virulence factors may include biofilm formation, cell wall components like glucuronoxylomannan, and enzyme production (proteases, lipases).

Purpose of the Study:

• To review the challenges and advancements in diagnosing and treating invasive trichosporonosis.
• To highlight the importance of accurate species identification for effective management.
• To discuss current therapeutic strategies and their limitations.

Main Methods:

• Review of scientific literature on Trichosporon spp. and invasive trichosporonosis.
• Discussion of diagnostic techniques including phenotypic screening, molecular methods (IGS sequencing), PCR, Luminex xMAP, and proteomics.
• Analysis of antifungal susceptibility data and treatment outcomes.

Main Results:

• Invasive trichosporonosis is a growing global concern, posing diagnostic and therapeutic challenges.
• Molecular methods, particularly IGS region sequencing, are essential for precise species identification, surpassing phenotypic methods.
• Current diagnostic tools include PCR, Luminex xMAP, and proteomics.
• Limited data exists on antifungal drug efficacy, but triazole-based regimens are considered the primary treatment approach.

Conclusions:

• Accurate identification of Trichosporon species is critical for managing invasive infections.
• Molecular diagnostics are superior to phenotypic methods for species-level identification.
• Effective treatment of invasive trichosporonosis remains challenging, with triazoles offering the most promising therapeutic option.