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Floating electrode–dielectric barrier discharge-based plasma promotes skin regeneration in a full-thickness skin defect mouse model

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Abstract

Wound healing involves a complex and dynamic interplay among various cell types, cytokines, and growth factors. Macrophages and transforming growth factor-β1 (TGF-β1) play an essential role in different phases of wound healing. Cold atmospheric plasma has a wide range of applications in the treatment of chronic wounds. Hence, we aimed to investigate the safety and efficacy of a custom-made plasma device in a full-thickness skin defect mouse model. Here, we investigated the wound tissue on days 6 and 12 using histology, qPCR, and western blotting. During the inflammation phase of wound repair, macrophages play an important role in the onset and resolution of inflammation, showing decreased F4/80 on day 6 of plasma treatment and increased TGF-β1 levels. The plasma-treated group showed better epidermal epithelialization, dermal fibrosis, collagen maturation, and reduced inflammation than the control group. Our findings revealed that floating electrode-dielectric barrier discharge (FE-DBD)-based atmospheric-pressure plasma promoted significantly faster wound healing in the plasma-treated group than that in the control group with untreated wounds. Hence, plasma treatment accelerated wound healing processes without noticeable side effects and suppressed pro-inflammatory genes, suggesting that FE-DBD-based plasma could be a potential therapeutic option for treating various wounds.

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Acknowledgements

The authors acknowledge Dr. Mohd Farhan for valuable discussions.

Funding

This work was partially supported by the Soonchunhyang University Research Fund and the National Research Foundation of Korea funded by the Korean government (MSIT) (grant numbers:2021R1I1A3048885, 2021-DD-RD-0480, and 2019R1A5A8083404).

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Correspondence to Seung Min Nam or Yongsung Hwang.

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Subramaniam, M.D., Bae, J.S., Son, J. et al. Floating electrode–dielectric barrier discharge-based plasma promotes skin regeneration in a full-thickness skin defect mouse model. Biomed. Eng. Lett. 14, 605–616 (2024). https://doi.org/10.1007/s13534-024-00356-5

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