[Architecture, influencing factors, and sensitivity to antifungal agents of Candida biofilm].
OBJECTIVE
To establish a model of Candida biofilm and to explore its characteristics, ultrastructure, influences by saliva and serum, and sensitivity to antifungal agents.


METHODS
Evaluations of the in vitro growth kinetics, influences by saliva and serum, and sensitivity to antifungal agents of Candida biofilm were performed with the abated tetrazolium salt XTT method on a 96-well microtire petri dish. The ultrastructure of Candida biofilm was observed under Confocal Laser Scanning Microscope (CLSM).


RESULTS
The bioactivity of Candida biofilm increased with culturing time and serum could obviously increase the action of biofilm. The Candida biofilm was significantly resistant to routine antifungal agents.


CONCLUSIONS
The Candida cells adhered in biofilms are significantly different in morphology from those in suspension and are resistant to routine antifungal agents such as Amphotericine B, Fluconazole and Itraconazole.
Sun
Qiu-ning
QN
Department of Dermatology, PUMC Hospital, CAMS, PUMC, Beijing 100730, China. sunqnzhy@yahoo.com
Fang
Kai
K
D000666:Amphotericin B / Q000494:pharmacology*; D000935:Antifungal Agents / Q000494:pharmacology*; D018441:Biofilms / Q000187:drug effects; D002175:Candida / Q000187:drug effects / Q000648:ultrastructure; D025141:Drug Resistance, Fungal; D015725:Fluconazole / Q000494:pharmacology; D017964:Itraconazole / Q000494:pharmacology; D008826:Microbial Sensitivity Tests; D018613:Microscopy, Confocal
D000935:Antifungal Agents; D017964:Itraconazole; D000666:Amphotericin B; D015725:Fluconazole