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Microb Pathog ; 148: 104436, 2020 Nov.
Article in English | MEDLINE | ID: mdl-32781099

ABSTRACT

Candida albicans is an opportunistic fungus frequently associated with periodontal diseases. The objective of this study was to determine the expression patterns of virulence genes associated with those of azole resistance among the strains of C. albicans isolated from patients with periodontal disease. We isolated 80 strains of C. albicans from patients with periodontal disease enrolled from two dental clinics and their antifungal susceptibilities were evaluated using the disc diffusion method. C. albicans and its virulence genes were identified using PCR. The expressions of the virulence genes of C. albicans were analyzed using real-time PCR post in vitro infection of the cell line A549. The phenotype for resistance against azoles such as ketoconazole and fluconazole was observed in all analyzed strains (n = 80), which coincided with the high frequency of occurrence of the genes CDR1 and MDR1 associated with resistance. The frequencies of detection and expression of the genes HWP1 (47/15), ALS1 (80/66), ALS3 (70/30), LIP1 (78/44), LIP4 (77/65), LIP5 (79/58), LIP6 (79/58), PLB1 (79/65), and PLB2 (80/66) were found to be higher in the strains of C. albicans isolated from patients with moderate periodontitis and different expression patterns associated with those for azole resistance were identified. It could be elucidated that the high expression of virulence markers associated with azole resistance in C. albicans might be contributing to the chronicity of periodontal infections.


Subject(s)
Antifungal Agents/pharmacology , Azoles/pharmacology , Candida albicans , Drug Resistance, Fungal , Periodontal Diseases , A549 Cells , Candida albicans/drug effects , Candida albicans/genetics , Fluconazole/pharmacology , Fungal Proteins/genetics , Humans , Ketoconazole/pharmacology , Microbial Sensitivity Tests , Periodontal Diseases/microbiology , Virulence/drug effects
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