In vitro antifungal and antibiofilm activities of novel sulfonyl hydrazone derivatives against Candida spp.

Background: The aim of this study was to investigate the antifungal and antibiofilm activity of the new sulfo-nyl hydrazones compound derived from sulphonamides.Methods: In this study, new sulfonyl hydrazone series were synthesized via a green chemistry method. The structures of the synthesized compounds were characterized by elemental analyses and spectroscopic meth-ods. The antifungal activities of the Anaf compounds against Candida strains under planktonic conditions were tested. The biofilm-forming ability of Candida strains was determined and the inhibitory effects of Anaf compounds on Candida biofilms compared with fluconazole were measured by MTT assay. Expression analy-sis of biofilm-related genes was investigated with qRT-PCR. The statistical analysis was performed using a one-way ANOVA test.Candida: strains was determined and the inhibitory effects of Anaf compounds on Candida biofilms compared with fluconazole were measured by MTT assay. Expression analysis of biofilm-related genes was investigated with qRT-PCR. The statistical analysis was performed using a one-way ANOVA test. Results: A total of 16 (45.7%) out of 35 Candida isolates were determined as strong biofilm producers in this study. C. albicans was the most biofilm producer, followed by C. krusei and C. lusitaniae. The Anaf compounds had a broad spectrum of activity with MIC values ranging from 4 mg/ml to 64 mg/ml. Our data indicated that the Anaf compound had a significant effect on inhibiting biofilm formation in both fluconazole-susceptible and-resistant strains. The expression levels of hypha-specific genes als3, hwp1, ece1 and sap5 were downre-gulated by Anaf compounds.Conclusions: Our study revealed that the Anaf compounds had antifungal activity and inhibited fungal bio-films, which may be related to the suppression of C. albicans adherence and hyphal formation. These results suggest that Anaf compounds may have therapeutic potential for the treatment and prevention of biofilm-associated Candida infections.(c) 2022 SFMM. Published by Elsevier Masson SAS. All rights reserved.

Automated summary

This study synthesized a series of new sulfo-nyl hydrazones compound and demonstrated their antifungal and biofilm inhibitory activity. The results suggest that Anaf compounds may have potential therapeutic applications in the treatment and prevention of biofilm-associated Candida infections.