Strategies to Improve the Antimicrobial Efficacy of Photodynamic, Sonodynamic, and Sonophotodynamic Therapies.
Lasers Surg Med
; 53(8): 1113-1121, 2021 10.
Article
em En
| MEDLINE
| ID: mdl-33508146
ABSTRACT
BACKGROUND AND OBJECTIVES:
This work evaluated antimicrobial photodynamic therapy (PDT), sonodynamic therapy (SDT), and the association of both therapies (sonophotodynamic therapy [SPDT]), mediated by curcumin (Cur) against Staphylococcus aureus biofilm. Next, additional strategies for these treatments were assessed. MATERIALS ANDMETHODS:
S. aureus biofilms received PDT, SDT, and SPDT, mediated by Cur (80 µM), LED light (450 nm), and 1 MHz ultrasound. The same treatments were also performed adding a strategy Cur with sodium dodecyl sulfate (SDS), Cur with potassium iodide (KI) or a pre-treatment with ultrasound. Cell viability was determined and biofilm architecture was evaluated under confocal microscopy.RESULTS:
SPDT was more effective to inactivate the bacteria than PDT and SDT. SDS achieved the greatest viability reductions, followed by KI and ultrasound pre-treatment. Confocal images revealed biofilm disruption and a reduced number of cells in all treatments. However, SPDT exhibited a pronounced effect and it was greater using SDS.CONCLUSION:
SPDT was more effective and additional strategies potentiated its effectiveness. Lasers Surg. Med. © 2021 Wiley Periodicals LLC.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Fotoquimioterapia
/
Curcumina
/
Anti-Infecciosos
Idioma:
En
Revista:
Lasers Surg Med
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
Brasil