Abstract
To evaluate the in vitro antifungal activity of curcumin against 2 strains of Candida albicans (ATCC 90028 and a clinical isolate - JY strain) and 1 isolate each of 3 nonalbicans - Candida species [Candida parapsilosis (ATCC 22019), C. glabrata (ATCC 90030), and C. dublieniensis (MYA 646)]. Planktonic MIC of the 4 Candida species was determined using micro broth dilution assay according to CLSI M27-A3 criteria. The biofilm development and sensitivity assay were performed with the 2 C. albicans strains. Curcumin at high concentrations (0.1-2 mg/mL) was effective in inhibiting planktonic organisms of all the 5 tested Candida strains. The planktonic phase and the biofilm phase of C. albicans ATCC 90028 exhibited similar MIC values for curcumin (0.5 mg/mL). Both curcumin and fluconazole were ineffective against the mature biofilms of JY strain. Our results reported here for the first time, in particular for the biofilm state of C. albicans, imply that curcumin a natural product could be used as a therapeutic alternative to conventional antifungals although further investigations are required to evaluate its potential.
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