In vitro activity of hypochlorous acid generating electrochemical bandage against monospecies and dual-species bacterial biofilms.
J Appl Microbiol
; 134(9)2023 Sep 05.
Article
en En
| MEDLINE
| ID: mdl-37667489
ABSTRACT
AIMS:
As antimicrobial resistance is on the rise, treating chronic wound infections is becoming more complex. The presence of biofilms in wound beds contributes to this challenge. Here, the activity of a novel hypochlorous acid (HOCl) producing electrochemical bandage (e-bandage) against monospecies and dual-species bacterial biofilms formed by bacteria commonly found in wound infections was assessed. METHODS ANDRESULTS:
The system was controlled by a wearable potentiostat powered by a 3V lithium-ion battery and maintaining a constant voltage of + 1.5V Ag/AgCl, allowing continuous generation of HOCl. A total of 19 monospecies and 10 dual-species bacterial biofilms grown on polycarbonate membranes placed on tryptic soy agar (TSA) plates were used as wound biofilm models, with HOCl producing e-bandages placed over the biofilms. Viable cell counts were quantified after e-bandages were continuously polarized for 2, 4, 6, and 12 hours. Time-dependent reductions in colony forming units (CFUs) were observed for all studied isolates. After 12 hours, average CFU reductions of 7.75 ± 1.37 and 7.74 ± 0.60 log10 CFU/cm2 were observed for monospecies and dual-species biofilms, respectively.CONCLUSIONS:
HOCl producing e-bandages reduce viable cell counts of in vitro monospecies and dual-species bacterial biofilms in a time-dependent manner in vitro. After 12 hours, >99.999% reduction in cell viability was observed for both monospecies and dual-species biofilms.Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Infección de Heridas
/
Ácido Hipocloroso
Límite:
Humans
Idioma:
En
Revista:
J Appl Microbiol
Asunto de la revista:
MICROBIOLOGIA
Año:
2023
Tipo del documento:
Article
País de afiliación:
Austria