Erschienen in:
19.10.2021 | Original Article
Effect of curcumin-encapsulated Pluronic® F-127 over duo-species biofilm of Streptococcus mutans and Candida albicans
verfasst von:
Diego Dantas Lopes dos Santos, João Felipe Besegato, Priscila Borges Gobbo de Melo, João Augusto Oshiro Junior, Marlus Chorilli, Dongmei Deng, Vanderlei Salvador Bagnato, Alessandra Nara de Souza Rastelli
Erschienen in:
Lasers in Medical Science
|
Ausgabe 3/2022
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Abstract
To assess the effect of curcumin-encapsulated Pluronic® F-127 (Cur-Plu) during antimicrobial photodynamic therapy (aPDT) over duo-species biofilm of Streptococcus mutans and Candida albicans. Thermal analysis, optical absorption, and fluorescence spectroscopy were evaluated. Minimum inhibitory concentration (MIC) and minimum bactericidal/fungal concentration were obtained. The biofilms were cultured for 48 h at 37 °C and treated according to the groups: P + M + L + (photosensitizer encapsulated with Pluronic® F-127 + light); P + D + L + (photosensitizer incorporated in 1% DMSO + light); P − M + L + (no Pluronic® F-127 + light); P − D + L + (1% DMSO + light); P − L + (Milli-Q water + light); P + M + L − (photosensitizer encapsulated with Pluronic® F-127 no light); P + D + L − (photosensitizer in 1% DMSO, no light); P − M + L − (Pluronic® F-127 no light); P − D + L − (1% DMSO, no light); P − L − (Milli-Q water, no light; negative control group); CHX (0.2% chlorhexidine, positive control group); and NYS (Nystatin). Dark incubation of 5 min was used. The groups that received aPDT were irradiated by blue LED (460 nm, 15 J/cm2). Cell viability of the biofilms was performed by colony-forming units (CFU/mL) and confocal microscopy. Two-way ANOVA followed by Tukey’s post hoc test was used at a significance level of 5%. P + D + L + and P + M + L + groups exhibited better log-reduction for both Candida albicans and Streptococcus mutans biofilms than P − M + L + , P − L + , and P − D + L + experimental groups. Furthermore, P + M + L + and P + D + L + showed greater reduction for Candida albicans than for Streptococcus mutans. aPDT mediated by Cur-Plu can be a potential strategy for biofilm control against duo-species biofilm of Streptococcus mutans and Candida albicans.