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Updated: Oct 19, 2025

A Soluble Tetrazolium-Based Reduction Assay to Evaluate the Effect of Antibodies on Candida tropicalis Biofilms
Published on: September 16, 2022
Impeding Virulence of Candida albicans by Candesartan and Domperidone
Hisham A Abbas1, Amany I Gad2, Mona A El-Sayed1
1Department of Microbiology and Immunology, Faculty of Pharmacy, Zagazig University, Zagazig, 44519, Egypt.
Abstract:
Candida albicans is the most common human fungal pathogen that has developed extensive virulence factors which allows successful colonization and infection of the host. Anti-virulence agents can alleviate the pathogenesis of fungi and help the immune system to eradicate them easily. This study aimed to explore the anti-virulence effect of domperidone and candesartan against C. albicans standard strain. Sub-inhibitory concentrations (1/4 and 1/8 of minimum inhibitory concentration) of domperidone and candesartan significantly inhibited the virulence factors hemolysin, lipase, protease, phospholipase, and bioflim formation. It was found that candesartan inhibited biofilm formation by 60.48-67.91%, hemolysin activity (61.21-74.14%), phospholipase activity (40-49.67%), lipase activity (58.97-73%), and protease activity (52.63%), while domperidone was found to inhibit biofilm formation by 70.54-77.49%, hemolysin activity (64.84-69.84%), phospholipase activity (49.67-60%), lipase activity (50-54.87%), and protease activity (52.63-57.9%). Quantitative real time-PCR confirmed the anti-virulence activity of domperidone and candesartan as both drugs significantly reduce the expression of the virulence genes SAP2, SAP6, PLB1, PLB2, LIP4, LIP5. In conclusion, domperidone and candesartan could serve as anti-virulence agents for treatment of C. albicans infections.
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