Fatty acids of dermatophytes

Area of Science:

• Mycology
• Biochemistry
• Dermatophyte Research

Background:

• Dermatophytes are fungi causing superficial mycoses.
• Cellular fatty acid profiles can inform fungal taxonomy and physiology.
• Understanding dermatophyte lipid metabolism is crucial for antifungal strategies.

Purpose of the Study:

• To determine the cellular fatty acid composition (C11-C20) in dermatophytes from genera Microsporum, Trichophyton, and Epidermophyton.
• To investigate the influence of incubation time and temperature on dermatophyte fatty acid profiles.
• To assess correlations between fatty acid composition and dermatophyte taxonomic status or ecological group (anthropophilic, geophilic, zoophilic).

Main Methods:

• Gas liquid chromatography was employed to analyze cellular fatty acids.
• Eighteen species and strains of dermatophytes were analyzed.
• Selected species were subjected to varying incubation times and temperatures (up to 37°C).

Main Results:

• Linoleic (18:2), oleic (18:1), and palmitic acid (16:0) constituted the majority (83.6-94.5%) of fatty acids in dermatophytes.
• Fatty acid composition and degree of unsaturation did not correlate with taxonomic classification or ecological niche.
• Elevated incubation temperature (37°C) showed a tendency to increase total fatty acid unsaturation.

Conclusions:

• The dominant fatty acids in Microsporum, Trichophyton, and Epidermophyton are consistent across different species and ecological groups.
• Incubation time has a minor effect on fatty acid profiles, with no significant chain elongation or unsaturation trends observed.
• Temperature, specifically 37°C, can influence the degree of fatty acid unsaturation in dermatophytes.