Pathogens (Jan 2023)

Potential Use of Brazilian Green Propolis Extracts as New Photosensitizers for Antimicrobial Photodynamic Therapy against Cariogenic Microorganisms

  • Analú Barros de Oliveira,
  • Túlio Morandin Ferrisse,
  • Gabriela Gomes França,
  • Sarah Raquel de Annunzio,
  • Willian Kopp,
  • Carla Raquel Fontana,
  • Fernanda Lourenção Brighenti

DOI
https://doi.org/10.3390/pathogens12020155
Journal volume & issue
Vol. 12, no. 2
p. 155

Abstract

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The synergic effect of Streptococcus mutans and Candida albicans increases dental caries severity. Antimicrobial photodynamic therapy (aPDT) is a non-invasive treatment for antimicrobial aspects. However, the current photosensitizers (PS) have many downsides for dental applications. This study aimed to evaluate the efficiency of two different Brazilian green propolis (BGP-AF and BGP-AG) as PS for aPDT against these microorganisms. A single-species biofilm was irradiated with crude extracts and their fractions and controls. Such extracts showed the best results and were evaluated in dual-species biofilms. Photodegradation, reactive oxygen species (ROS), cytotoxicity, and color stability assays were also investigated. Reductions higher than 3 log10 CFU/mL (p p S. mutans and C. albicans regrowth after 24 h of treatment (p p > 0.05). BGP-AF-mediated aPDT showed 72.41% of oral keratinocyte viability (p S. mutans and C. albicans. Specifically, BGP-AF may represent a promising PS for dental applications.

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