期刊
CARBOHYDRATE POLYMERS
卷 149, 期 -, 页码 77-82出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2016.04.101
关键词
Biofilm; Non-Candida albicans Candida species; Carboxymethyl chitosan
Although most cases of candidiasis have been attributed to Candida albicans, non-C. albicans Candida species have been isolated in increasing numbers in patients. In this study, we determined the inhibition of carboxymethyl chitosan (CM-chitosan) on single and mixed species biofilm of non-albicans Candida species, including Candida tropicalis, Candida parapsilosis, Candida krusei and Candida glabrata. Biofilm by all tested species in microtiter plates were inhibited nearly 70%. CM-chitosan inhibited mixed species biofilm in microtiter plates and also on medical materials surfaces. To investigate the mechanism, the effect of CM-chitosan on cell viability and biofilm growth was employed. CM-chitosan inhibited Candida planktonic growth as well as adhesion. Further biofilm formation was inhibited with CM-chitosan added at 90 min, 12 h or 24 h after biofilm initiation. CM-chitosan was not only able to inhibit the metabolic activity of Candida cells, but was also active upon the establishment and the development of biofilms. (C) 2016 Elsevier Ltd. All rights reserved.
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