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  • Title: Inhibition of Candida albicans biofilm formation and yeast-hyphal transition by 4-hydroxycordoin.
    Author: Messier C, Epifano F, Genovese S, Grenier D.
    Journal: Phytomedicine; 2011 Mar 15; 18(5):380-3. PubMed ID: 21353508.
    Abstract:
    Candida albicans distinguishing features such as dimorphism and biofilm formation are thought to play a key role in oral tissue invasion and resistance to host defences and antifungal agents. In this study, we investigated the effect of 4-hydroxycordoin, a natural isopentenyloxychalcone, on growth, biofilm formation and yeast-hyphal transition of C. albicans. Serial dilutions of 4-hydroxycordoin in YNB medium were prepared in microplates to determine minimal inhibitory concentrations (MIC) and effects on biofilm formation for two strains of C. albicans. 4-Hydroxycordoin at up to 200 μg/ml had no effect on growth of C. albicans. Biofilm formation was strongly inhibited (>85%) by 4-hydroxycordoin at 20 μg/ml, while concentrations ranging from 50 to 200 μg/ml caused a significant inhibition of yeast-hyphal transition, as determined by microscopic observation. In conclusion, 4-hydroxycordoin exerts inhibitory effects on two important virulence factors of C. albicans: biofilm formation or yeast-hyphal transition. This suggests that 4-hydroxycordoin may have a therapeutic potential for C. albicans infections.
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