Candida albicans

 




Candida albicans despues de 2 h de incubación a 37°C en medio TC199.
Contraste de fases, X 400.


Micelios y levaduras de Candida albicans teñidos con blanco de calcofluor.
Microscopio de fluorescencia, X 1000.


Antifungigrama realizado a Candida albicans en agar de Shadomy.
Se observan los halos de inhibición generados frente a 9 antifúngicos diferentes.



Ensayo de actividad fosfolipasa realizado a Candida albicans.
Se observan halos de producción de fosfolipasa alrededor de las colonias productoras.


Ensayo de actividad proteinasa realizado a Candida albicans.
Se observan halos de producción de proteinasa alrededor de las colonias productoras.




Photographs obtained from: Rosario San Millán Gutiérrez.
Adhesión al poliestireno de aislamientos clínicos de Candida.
Tesis Doctoral, Septiembre de 1997.





Transmission electron micrographs of ultrathin sections of Candida albicans fixed with DMSO:
A: A whole yeast cell grown at 37°C, showing long, regularly radiating fibrils;
B: Section of a yeast cell grown at 25°C, showing details of cell envelope ultrastructure;
C: Schematic diagram of a typical cell wall derived from Shepherd showing the various layers:
plasma membrane (PM), zone of mannoprotein (M1), glucan-chitin (GC), glucan (G),
mannoprotein (M2) and outer fibrillar layer (F).


Transmission electron micrographs of ultrathin sections of Candida albicans fixed with DMSO:
A: An image of a 25°C-grown cell revealing intracellular organelles;
B: Brush-like fibrillar structure on the outermost surface of a C. albicans cell grown at 37°C.
Note the interconnections of the long fibrils between two cells (arrow);
C: A cell grown at 37°C showing distinct, long individual fibrils.




Transmission electron micrographs of ultrathin sections of Candida albicans cells
fixed with DMSO, showing the effect of different growth temperatures and DTT treatment
on cell wall ultrastructure:
A: A cell of C. albicans grown at 25°C showing short, blunt fibrils;
B: A cell of C. albicans grown at 37°C showing long, tightly packed and distinct fibrils;
C: A C. albicans cell grown at 45°C with short, aggregated fibrils;
D: A C. albicans cell grown at 37°C and treated with DTT showing fibril loss.



Photographs obtained from: MA Jabra-Rizk, WA Falkler, JrWG Merz, JI Kelley, AAMA Baqui, TF Meiller. Candida dubliniensis and Candida albicans display surface variations consistent with observed intergeneric coaggregation.
Rev Iberoam Micol 1999; 16: 187-193.