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Candida albicans invasion is one of the most serious fungal infections in clinical history. In recent years, because of the widespread use of immunosuppressive drugs, chemotherapy drugs, glucocorticoids, and broad-spectrum antibiotics, serious drug resistance has been reported; therefore, a new type of antifungal drug needs to be developed. In this study, we found that Nerol (NEL) had strong antimicrobial activity and 0.77 μL/mL NEL was the minimum inhibitory concentration (MIC) effective against C. albicans. We determined the change of the growth curve of NEL for C. albicans, to identify the trend of NEL activity against C. albicans. Through the determination of the ergosterol content and glucose-induced extracellular fluid acidification of NEL on C. albicans, we found that NEL inhibits the growth of C. albicans by destroying cell membranes. This finding was also supported by the expression of SAP (secreted aspartyl proteinase) involved in cell membrane synthesis. Finally, demonstrations of phenotype investigation, colony-forming unit (CFU) counts, and PAS (periodic acid-Schiff) staining were conducted to prove that NEL had the ability to treated mouse oral C. albicans infection and vaginal C. albicans infection. This research may help us to investigate new antimicrobial agents for treating C. albicans infections. Key Points: • NEL can inhibit the growth of C. albicans. • NEL destroys the cell membrane formation and permeability of C. albicans. • NEL can treat vulvovaginal candidiasis and oropharyngeal candidiasis in mice. • NEL could be used as a possible antifungal agent. [ABSTRACT FROM AUTHOR]

Perillaldehyde (PAE), a natural monoterpenoid agent extracted from Perilla frutescence , PAE has been reported to present various physiological capabilities, such as anti-inflammation, anti-oxidative and anti-fungal. In this study, we show that PAE exhibits strong antifungal activity against Candida albicans (C. albicans). C. albicans , a fungal pathogen with high incidence of antifungal resistance in clinical settings, is the major cause of oropharyngeal candidiasis (OPC). OPC is characterized by inflammatory immunological responses to fungal infections. Our in vitro results show PAE inhibited several virulence attributes of C. albicans including biofilm formation, yeast-to-hyphal transition and secreted aspartic proteinases (SAPs) gene expression. Using an experimental murine model of OPC, we found that PAE inhibited NLRP3 inflammasome assembly, reduced the excessive accumulation of ROS and prevented the p65 transfer in nuclear; processes all leading to reduced inflammation burden in the host. Together, this supports use PAE as a promising new agent to improve OPC. [ABSTRACT FROM AUTHOR]