Real-time assessment of Interspecies Candida Biofilm Formation


 
 
 Candida infections are responsible for increased morbidity and mortality in immunocompromised patients, with Candida having the added ability to form highly structured biofilms that protect them from the external environment and the action of antifungals. Few studies have reported on real-time interactions between Candida species.
 
 
 
 The objective of this study was to investigate the interspecies biofilm changes of oral Candida species using the xCELLigence system and the CV staining technique.
 
 
 
 This study demonstrated the mixed biofilm interactions of Candida species using an impedance-based biofilm monitoring system and crystal violet staining.
 
 
 
 When using the xCELLigence system the maximum cell index increased in most mixed biofilms, with the exception of the C. glabrata/C. parapsilosis and C. albicans combinations. Bulk biofilm formation measured by CV staining was the highest in C. albicans and C. tropicalis combinations and the lowest in the C. glabrata/C. parapsilosis combination. Pseudohyphae were observed in C. albicans and C. glabrata combinations with C. tropicalis or C. parapsilosis.
 
 
 
 This study is the first to report on the real-time interactions of Candida species using the xCELLigence system and suggests that the presence of specific species influence the biofilm formation of commonly isolated Candida species.
