In vitro bactericidal efficacy of atmospheric-pressure plasma jet on titanium-based implant infected with Staphylococcus aureus

Staphylococcus aureus is a representative of gram-positive bacteria that causes skin infection, respiratory diseases, and burned tissue infections. The aim of this study was to evaluate the sterilizing efficiency of an atmospheric-pressure plasma jet (APPJ) on S. aureus adhered on a titanium surface...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 2017-01, Vol.56 (1S), p.01AC01-01AC01
Main Authors: Park, Young-Ouk, Lee, Chang-Min, Kim, Myung-Sun, Jung, Sang-Chul, Yang, Seong-Won, Kook, Min-Suk, Kim, Byung-Hoon
Format: Article
Language:English
Subjects:
Bacteria
Combustion
Efficiency
Plasma (physics)
Staphylococcus aureus
Surgical implants
Therapy
Titanium
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Summary:Staphylococcus aureus is a representative of gram-positive bacteria that causes skin infection, respiratory diseases, and burned tissue infections. The aim of this study was to evaluate the sterilizing efficiency of an atmospheric-pressure plasma jet (APPJ) on S. aureus adhered on a titanium surface. During the APPJ sterilization, the plasma gases used were Ar, Ar+N2, and Ar+O2. With increasing APPJ treatment time, the viability of S. aureus decreased. The addition of O2 gas to Ar gas resulted in a higher sterilizing efficiency than the addition of other groups. Plasma exposure induced bacterial oxidative stress, and it was confirmed that the cell membrane was seriously damaged by the production of reactive oxygen species. Our finding suggests that the APPJ is an effective tool for clinical antimicrobial therapy.
ISSN:0021-4922
1347-4065
DOI:10.7567/JJAP.56.01AC01