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Septal ultrastructure in Candida albicans
Abstract:
Fine structural studies on the septa of Candida albicans in vitro (when leading a saprophytic existence) and the organism in its invasive form (as a pathogen in oral candidosis) have shown that in the former the septum exhibits a unique central perforation resembling an aggregate of fine canaliculi connecting one cell to the other. In the invasive form the septum is non-perforated and appears as a solid structure. Septal ultrastructure is well characterised in many pathogenic fungi. Our observations on Candida albicans do not resemble any previous studies carried out on other deutromycetous fungi.
Insights
The study reveals distinct differences in the septa of Candida albicans, with saprophytic forms showing a unique perforated septum and invasive forms exhibiting a solid, non-perforated structure. These findings differ from other pathogenic fungi.
Area of Science:
- Mycology
- Cell Biology
- Medical Mycology
Background:
- Septal ultrastructure is crucial for understanding fungal cell division and pathogenicity.
- Candida albicans is an opportunistic fungal pathogen causing oral candidosis.
- Previous studies have characterized septal ultrastructure in various pathogenic fungi.
Purpose of the Study:
- To investigate and compare the fine structural differences in the septa of Candida albicans during saprophytic and invasive growth phases.
- To elucidate the unique ultrastructural characteristics of Candida albicans septa.
- To compare these findings with existing knowledge of septal ultrastructure in other fungi.
Main Methods:
- Fine structural analysis using electron microscopy.
- Comparative study of Candida albicans grown in vitro (saprophytic) and in vivo (invasive form in oral candidosis).
Main Results:
- Saprophytic Candida albicans exhibits septa with a unique central perforation, appearing as aggregated fine canaliculi connecting cells.
- Invasive Candida albicans shows non-perforated, solid septa.
- The observed septal ultrastructure in Candida albicans does not align with previously reported studies on other deutromycetous fungi.
Conclusions:
- The septal morphology of Candida albicans varies significantly between its saprophytic and invasive states.
- The unique perforated septum in saprophytic Candida albicans may play a role in cell-to-cell communication or nutrient exchange.
- The solid septum in invasive Candida albicans might be associated with increased structural integrity during host tissue invasion.