Cold atmospheric helium plasma in the Post-COVID-19 era: A promising tool for the disinfection of silicone endotracheal prostheses
Microorganisms
; 12(1)jan.2024. ilus
Article
in English
| CONASS, Sec. Est. Saúde SP, SESSP-IDPCPROD, Sec. Est. Saúde SP
| ID: biblio-1527045
Responsible library:
BR79.1
ABSTRACT
ABSTRACT Despite the excellent properties of silicone endotracheal prostheses, their main limitation is the formation of a polymicrobial biofilm on their surfaces. It can cause local inflammation, interfering with the local healing process and leading to further complications in the clinical scenario. The present study evaluated the inhibitory effect of cold atmospheric plasma (CAP) on multispecies biofilms grown on the silicone protheses' surfaces. In addition to silicone characterization before and after CAP exposure, CAP cytotoxicity on immortalized human bronchial epithelium cell line (BEAS-2B) was evaluated. The aging time test reported that CAP could temporarily change the silicone surface wetting characteristics from hydrophilic (80.5°) to highly hydrophilic (<5°). ATR-FTIR showed no significant alterations in the silicone surficial chemical composition after CAP exposure for 5 min. A significant log reduction in viable cells in monospecies biofilms (log CFU/mL) of C. albicans, S. aureus, and P. aeruginosa (0.636, 0.738, and 1.445, respectively) was detected after CAP exposure. Multispecies biofilms exposed to CAP showed significant viability reduction for C. albicans and S. aureus (1.385 and 0.831, respectively). The protocol was not cytotoxic to BEAS-2B. CAP can be a simple and effective method to delay multispecies biofilm formation inside the endotracheal prosthesis.
Full text:
Available
Collection:
National databases
/
Brazil
Database:
CONASS
/
Sec. Est. Saúde SP
/
SESSP-IDPCPROD
Type of study:
Practice guideline
Language:
English
Journal:
Microorganisms
Year:
2024
Document type:
Article
Institution/Affiliation country:
Dante Pazzanese Institute of Cardiology/BR
/
Faculdade de Medicina, Universidade de São Paulo/BR
/
Federal University of São Paulo (UNIFESP)/BR
/
São Paulo State University (UNESP)/BR