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Mycoses. 1996 Jan-Feb;39(1-2):45-50.

Fungicidal effect of tyrothricin on Candida albicans.

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Institute of Medical Microbiology and Hygiene, Faculty of Clinical Medicine, Mannheim, Germany.


Tyrothricin, a polypeptide antibiotic, is active against yeast cells. Tyrothricin was rapidly fungicidal towards Candida albicans. Concentration of four times the minimum inhibitory (25 mg l-1) reduced the yeast numbers by more than 3 log10 within 1 h. Similar results were obtained in a flow cytometric antifungal activity assay using the new two-colour probe for yeast viability, FUN-1, which measures impairment of metabolic activity. The respiratory activity of Candida albicans, measured in a XTT kinetic assay, was significantly reduced in comparison with controls by 3.12 mg l-1 of the substance. Because fungicidal concentrations of tyrothricin are locally achievable in patients, an evaluation of the local effect of tyrothricin in patients suffering from mucosal infections with Candida species should be considered.

[Indexed for MEDLINE]

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