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Direct membrane damage and miconazole lethality
1VA Medical Center, Minneapolis, MN 55417.
Research Communications in Chemical Pathology and Pharmacology
|August 1, 1992
Abstract:
Physicochemical membrane damage is presumably the cause of growth phase-dependent lethal miconazole action. In support of this, we showed that as stationary phase inoculum cells of Candida albicans progress into early logarithmic phase, susceptibilities to lethal action and to miconazole-induced release of K+ increase together.
Insights
Miconazole
Area of Science:
- Mycology
- Biochemistry
Background:
- Candida albicans is a fungal pathogen.
- Miconazole is an antifungal drug.
- The mechanism of miconazole's lethal action is not fully understood.
Purpose of the Study:
- To investigate the mechanism of growth phase-dependent lethal miconazole action in Candida albicans.
Main Methods:
- Assessing the susceptibility of Candida albicans cells to miconazole at different growth phases.
- Measuring potassium ion (K+) leakage from cells exposed to miconazole.
Main Results:
- Miconazole's lethal effect on Candida albicans is dependent on the cell's growth phase.
- Susceptibility to miconazole and miconazole-induced potassium ion release increase as cells transition from stationary to early logarithmic phase.
Conclusions:
- Physicochemical membrane damage is likely responsible for the growth phase-dependent lethal action of miconazole.
- These findings provide insights into the antifungal mechanism of miconazole.