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Phospholipase and protease activities in clinical Candida isolates with reference to the sources of strains

: Phospholipase- and Protease-Aktivitat bei klinischenCandida-Isolaten mit Bezug zur Herkunft der Stämme

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Summary. 

The present study was aimed at determining in vitro phospholipase and protease activities in 95 clinical isolates of various Candida species (C. albicans, C. glabrata, C. guilliermondii,C.kefyr, C. krusei, C. lipolytica, C. lusitaniae, C. parapsilosis, C.rugosa and C. tropicalis). 59 (62.1%) of isolates examined were phospholipase positive and 75 (78.9.9%) were protease positive. 56 (93.3%) of C.albicans isolates tested were phospholipase producers – however only a few strains of C. glabrata and C. kefyr behaved in the same way. Protease activity was detected in 57 (95%) of C. albicans strains tested and in a few strains of C. kefyr, C.lipolytica, C. parapsilosis and C. tropicalis– the remaining isolates were negative. 56 strains of C.albicans and 2 strains of C. kefyr tested produced both phospholipase and protease.

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Zusammenfassung. 

Die Phospholipase- und Protease-Aktivität an 95 klinischen Candida-Isolaten wurde bestimmt. Die Isolate gehörten den Arten Candida albicans, Candida glabrata, Candida guilliermondii, Candida kefyr, Candida krusei, Candida lipolytica, Candida lusitaniae, Candida parapsilosis, Candida rugosa und Candida tropicalis an. 59 Stämme (62.1%) waren Phospholipase-positiv und 75 (78.9%) waren Protease-positiv. 56 C. albicans-Isolate (93.3%) waren Phospholipase-positiv, jedoch nur einige wenige Stämme von C. glabrata und C. kefyr. Protease-Aktivität war an 57 C. albicans-Stämmen (95.0%) und nur an wenigen Stämmen von C. kefyr, C.lipolytica, C. parapsilosis und C. tropicalis nachweisbar. Bei 56 C. albicans-Stämmen und bei 2 C. kefyr-Stämmen war sowohl Phospholipase- als auch Protease-Aktivität zu beobachten.
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Keywords: Candida; Phospholiphase; Protease; Virulenz; phospholipase; protease; virulence

Document Type: Research Article

Affiliations: Department of Microbiology and Clinical Microbiology, Cerrahpaşa Medical Faculty, Istanbul University, Istanbul Turkey.

Publication date: June 1, 2002

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