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Future Microbiol ; 12: 1123-1134, 2017 10.
Article in English | MEDLINE | ID: mdl-28876122

ABSTRACT

AIM: This work aimed to evaluate the activity of 3'-hydroxychalcone against Cryptococcus gattii in planktonic and biofilm forms and their toxicity using alternative animal models. MATERIALS & METHODS: Minimum inhibitory concentration and minimum fungicide concentration were determined. Biofilm formation and the susceptibility tests were performed by the 2,3-bis-(2-methoxy-4-nitro-5-sulfophenyl)-5-[carbonyl(phenylamino)]-2H-tetrazolium hydroxide assay. Toxicity and efficacy were checked in Danio rerio and Galleria mellonella models. RESULTS: The compound 3'-hydroxychalcone showed fungicidal activity against C. gattii in both planktonic and biofilm forms. The toxicity in zebrafish embryos revealed a low lethal concentration. In G. mellonella, the compound did not show antifungal activity and larvae toxicity. CONCLUSION: Because of the activity of 3'-hydroxychalcone against C. gattii in vitro, molecular modifications should be made to improve efficacy and to reduce toxicity in vivo. [Formula: see text].


Subject(s)
Antifungal Agents/pharmacology , Cryptococcus gattii/drug effects , Disease Models, Animal , Animals , Antifungal Agents/chemistry , Biofilms/drug effects , Cryptococcosis/microbiology , Cryptococcus gattii/cytology , Lepidoptera/drug effects , Microbial Sensitivity Tests , Microscopy, Electron, Scanning , Zebrafish
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