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박봉주,박종철,Hideaki Taguchi,Katsuhiko Kamei,Tetsuhiro Matsuzawa,현성휴 연세대학교의과대학 2011 Yonsei medical journal Vol.52 No.3
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 (MIC_50, 2-4 μg/mL, MIC_90, 4-8 μg/mL, and geometric mean (GM) MICs, 3.36-4 μg/mL) than those of fluconazole (MIC_50, 2-16 μg/mL, MIC_90, 4-32 μg/mL, and GM MICs, 3.45-25.8 μg/mL) and flucytosin (MIC_50, MIC_90, 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.
Antimicrobial Effect of Medical Adhesive Composed of Aldehyded Dextran and ε-Poly(L-Lysine)
( Jeong Hyun Lee ),( Hye Lee Kim ),( Mi Hee Lee ),( Hideaki Taguchi ),( Suong Hyu Hyon ),( Jong Chul Park ) 한국미생물 · 생명공학회 2011 Journal of microbiology and biotechnology Vol.21 No.11
Infection of surgical wounds is a severe problem. Conventional tissue reattachment methods have limits of incomplete sealing and high susceptibility to infection. Medical adhesives have several advantages over traditional tissue reattachment techniques, but still have drawbacks, such as the probability of infection, low adhesive strength, and high cytotoxicity. Recently, a new medical adhesive (new-adhesive) with high adhesive strength and low cytotoxicity, composed of aldehyded dextran and ε-poly(Llysine), was developed. The antimicrobial activity of the new-adhesive was assayed using agar media and porcine skin. In the agar diffusion method, inoculated microorganisms that contacted the new-adhesive were inactivated, but this was not dependent on the amount of new-adhesive. Similar to the agar media results, the topical antimicrobial effect of new-adhesive was confirmed using a porcine skin antimicrobial assay, and the effect was not due to physical blocking based on comparison with the group whose wounds were wrapped.