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Phospholipase activity as a criterion for biotyping Candida albicans
Summary
Most oral Candida albicans strains (94%) produce phospholipase, an enzyme crucial for fungal virulence. However, the enzyme
Area of Science:
- Microbiology
- Mycology
- Biochemistry
Background:
- Candida albicans is an opportunistic fungal pathogen frequently found in the oral cavity.
- Phospholipase activity is a virulence factor associated with Candida species.
- Accurate identification and biotyping of Candida albicans isolates are important for clinical management.
Purpose of the Study:
- To determine the phospholipase activity of oral Candida albicans isolates.
- To assess the potential of phospholipase activity as a criterion for Candida albicans biotyping.
Main Methods:
- One hundred oral isolates of Candida albicans were collected.
- Phospholipase activity was assessed using a standard plate assay.
- The degree of phospholipase activity was quantified by calculating the Phosphatidyl-choline zone (Pz) values.
Main Results:
- A high prevalence of phospholipase production was observed, with 94% of isolates exhibiting activity.
- Phospholipase activity varied significantly among isolates, with Pz values ranging from 0.3 to 0.9.
- Considerable variation in phospholipase activity was noted upon repeat testing of the same isolates.
Conclusions:
- Phospholipase is a common characteristic of oral Candida albicans isolates.
- The high variability in phospholipase activity makes it unreliable for Candida albicans biotyping.
- Further research may explore other stable phenotypic or genotypic markers for Candida albicans biotyping.