Journal
PHOTODIAGNOSIS AND PHOTODYNAMIC THERAPY
Volume 39, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.pdpdt.2022.102975
Keywords
Type 1 PDR; Type 11 PDR; Photodynamic reaction; Reactive oxygen species; Photodynamic therapy
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Funding
- Seoul Women's University [2022-0311]
- Korea Institute of Planning and Evaluation for Technology in Food, Agriculture and Forestry (IPET) through High Value-added Food Technology Development Program - Ministry of Agriculture, Food and Rural Affairs (MAFRA) [321043-05]
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We investigated the bactericidal effects of two types of photoinduced reactive oxygen species (ROS) on bacteria with distinct surface charges. The results showed that one type of ROS was significantly dependent on the surface charge of the bacteria, which could be significant in enhancing treatment efficiency in the clinical field.
Here, we investigated the bactericidal effects of two types of photoinduced reactive oxygen species (ROS), superoxide anion and singlet oxygen, on bacteria with distinct surface charges. We fabricated photofunctional polymer films (PFPFs) capable of generating both types of ROS, and they were subjected to photodynamic inactivation tests for 12 various strains of Acinetobacter baumannii. The results showed that the type I ROS (superoxide anion) was significantly dependent on the surface charge of the bacteria owing to charge-charge repulsion, while the type II ROS (singlet oxygen) was independent of the surface charge of the bacteria. These results could be significant in enhancing treatment efficiency in the clinical field.
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