title: In vitro antifungal activity of epigallocatechin 3-O-gallate against clinical isolates of dermatophytes.
abstract: Previously, we reported that epigallocatechin 3-O-gallate (EGCg) has growth-inhibitory effect on clinical isolates of Candida species. In this study, we investigated the antifungal activity of EGCg and antifungal agents against thirty-five of dermatophytes clinically isolated by the international guidelines (M38-A2). All isolates exhibited good susceptibility to EGCg (MIC₅₀, 2-4 μg/mL, MIC₉₀, 4-8 μg/mL, and geometric mean (GM) MICs, 3.36-4 μg/mL) than those of fluconazole (MIC₅₀, 2-16 μg/mL, MIC₉₀, 4-32 μg/mL, and GM MICs, 3.45-25.8 μg/mL) and flucytosin (MIC₅₀, MIC₉₀, and GM MICs, >64 μg/mL), although they were less susceptible to other antifungal agents, such as amphotericin B, itraconazole, and miconazole. These activities of EGCg were approximately 4-fold higher than those of fluconazole, and were 4 to 16-fold higher than flucytosin. This result indicates that EGCg can inhibit pathogenic dermatophyte species. Therefore, we suggest that EGCg may be effectively used solely as a possible agent or combined with other antifungal agents for antifungal therapy in dermatophytosis.
authors.affiliation: Department of Medical Engineering, Yonsei University College of Medicine, Seodaemun-gu, Seoul 120-752, Korea.
authors.forename: Bong Joo
authors.initials: BJ
authors.lastname: Park
authors.forename: Hideaki
authors.initials: H
authors.lastname: Taguchi
authors.forename: Katsuhiko
authors.initials: K
authors.lastname: Kamei
authors.forename: Tetsuhiro
authors.initials: T
authors.lastname: Matsuzawa
authors.forename: Suong-Hyu
authors.initials: SH
authors.lastname: Hyon
authors.forename: Jong-Chul
authors.initials: JC
authors.lastname: Park
mesh_terms: D000935:Antifungal Agents / Q000494:pharmacology*; D003883:Arthrodermataceae / Q000187:drug effects* / Q000302:isolation & purification; D002392:Catechin / Q000031:analogs & derivatives* / Q000494:pharmacology; D008826:Microbial Sensitivity Tests
chemical_list: D000935:Antifungal Agents; D002392:Catechin; C045651:epigallocatechin gallate