Effect of antimycotic agents on the activity of aspartyl proteinases secreted by Candida albicans

Autor: Bernhard Hube, Gerald Hamm, Nikola Krnjaic, Hans C. Korting, Martin Schaller, M. Niewerth
Rok vydání: 2003
Předmět:
Zdroj: Journal of medical microbiology. 52(Pt 3)
ISSN: 0022-2615
Popis: The inhibitory effect of human immunodeficiency virus (HIV) proteinase inhibitors amprenavir and saquinavir and antifungal agents terbinafine, ketoconazole, amphotericin B and ciclopiroxolamine on aspartyl proteinases (Saps) secreted by Candida albicans was tested in an in vitro spectophotometric assay. As expected, both HIV proteinase inhibitors showed a significant inhibitory effect on Sap activity, which was comparable to that of the classical aspartyl proteinase inhibitor pepstatin A (P < 0.001). Antifungal drugs such as ketoconazole, terbinafine and amphotericin B had no, or only minor, inhibitory effects on proteolytic activity. In contrast, a significant reduction in Sap activity could be demonstrated during treatment with the antifungal agent ciclopiroxolamine (P < 0.001). These results point to a multiple effect of this antimycotic agent and might explain the reduced adherence of C. albicans to human epithelial cells at subinhibitory doses.
Databáze: OpenAIRE