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  • Title: Effects of imidazole- and triazole-derivative antifungal compounds on the growth and morphological development of Candida albicans hyphae.
    Author: Odds FC, Cockayne A, Hayward J, Abbott AB.
    Journal: J Gen Microbiol; 1985 Oct; 131(10):2581-9. PubMed ID: 2999296.
    Abstract:
    Six azole-derivative antifungal compounds affected several aspects of Candida albicans hyphal development with only a relatively small degree of inhibition of growth rate, measured in terms of ATP concentration, whereas amphotericin B and 5-fluorocytosine affected morphology only when they also substantially inhibited fungal growth rate. At 10(-8) M, all the azoles tested inhibited branch formation by C. albicans hyphae. At 10(-7) M and higher concentrations, clotrimazole and miconazole strongly suppressed emergence of new hyphal outgrowths from parent yeast cells, whereas ICI 153066 and itraconazole had little effect on this phenomenon and ketoconazole and tioconazole had intermediate effects. At the highest concentrations tested (10(-5) M) hyphal development was ultimately arrested by the azole compounds and the fungus grew predominantly in the form of budding yeast cells; however, none of the azole antifungals prevented initial emergence of an apparently normal germ tube. The antifungals only exerted their morphological effects when they were present in the culture medium: removal of the compounds after exposure of C. albicans to them led to reversion to normal growth.
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