A novel method to control the balance of skin microflora -: Part 1.: Attack on biofilm of Staphylococcus aureus without antibiotics

被引:82
作者
Masako, K
Hideyuki, I
Shigeyuki, O
Zenro, I
机构
[1] Shiseido Co Ltd, Life Sci Res Ctr, Tsuzuki Ku, Yokohama, Kanagawa 2248558, Japan
[2] Yokohama City Univ Med, Dept Dermatol, Yokohama, Kanagawa, Japan
关键词
skin microflora; biofilm; atopic dry skin; Staphylococcus aureus; Staphylococcus epidermidis;
D O I
10.1016/j.jdermsci.2005.01.006
中图分类号
R75 [皮肤病学与性病学];
学科分类号
100206 ;
摘要
Background: Staphylococcus aureus (SA) is usually present in atopic dry skin, and not only in regions seriously affected by atopic dermatitis. SA discharges various toxins and enzymes that injure the skin, and forms a biofilm from fibrin fiber and glycocalyx; the biofilm is important for adhesion of SA to the skin and for resistance to antimicrobial agents. Even highly effective moisturizers do not work perfectly on atopic dry skin. Staphylococcus epidermidis (SE) is a major constituent of skin microflora on healthy human skin, and provides protection against the growth of pathogenic bacteria. Objectives: Since treatment with anti-microbials may Lead to re-growth of SA, which grows faster than other Staphylococci and often shows antibiotic resistance, we searched for novel approaches to control the skin-microfloral balance without using conventional anti-microbials. Method: Biofilm formation by SA in vitro was observed in detail using scanning electron microscopy. Approximately 500 substances were screened for a selective effect on SA growth and SA biofilm. Results: We found that xylitol inhibited the formation of glycocalyx, and farnesol dissolved fibrin fibers. Farnesol suppressed the growth of only SA, and did not affect that of SE. Xylitol and farnesol synergistically inhibited biofilm formation by SA. Conclusion: Xylitol and farnesol have potential for controlling the skin-microfloral balance because of their selective effects and inhibition of biofilm formation. They might provide a useful and safe method to care for skin colonized by SA, without using antibiotics. (c) 2005 Japanese Society for Investigative Dermatology. Published by Elsevier Ireland Ltd. All rights reserved.
引用
收藏
页码:197 / 205
页数:9
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