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논문 기본 정보

자료유형
학술저널
저자정보
이주희 (연세대학교) 이영인 (연세대학교) 이상규 (연세대학교) 함서윤 (연세대학교) 정인희 (글로벌의학연구센터) 석장미 (글로벌의학연구센터)
저널정보
연세대학교 의과대학 Yonsei Medical Journal Yonsei Medical Journal Vol.65 No.2
발행연도
2024.2
수록면
98 - 107 (10page)
DOI
10.3349/ymj.2023.0125

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Purpose: Photobiomodulation (PBM), encompassing low-energy laser treatment and light-emitting diode (LED) phototherapy, has demonstrated positive impacts on skin rejuvenation and wound healing. Organic light-emitting diodes (OLEDs) present a promising advancement as wearable light sources for PBM. However, the biological and biochemical substantiation of their skin rejuvenation and wound healing effects remains limited. This study aimed to ascertain the safety and efficacy of OLEDs as a next generation PBM modality through comprehensive in vitro and in vivo investigations. Materials and Methods: Cell viability assays and human ex vivo skin analyses were performed after exposure to OLED and LED irradiation to examine their safety. Subsequent evaluations examined expression levels and wound healing effects in human der mal fibroblasts (HDFs) using quantitative reverse transcription-polymerase chain reaction, enzyme-linked immunosorbent as say, and wound healing assays post-irradiation. Additionally, an in vivo study was conducted using a ultra violet (UV)-irradiated animal skin model to explore the impact of OLED exposure on dermal collagen density and wrinkles, employing skin replica and tissue staining techniques. Results: OLED irradiation had no significant morphological effects on human skin tissue, but caused a considerably higher expres sion of collagen than the control and LED-treated groups. Moreover, OLED irradiation reduced the expression levels of matrix me talloproteinases (MMPs) more effectively than did LED on HDFs. OLED irradiation group in HDFs had significantly higher expres sion levels of growth factors compared to the control group, but similar to those in the LED irradiation group. In addition, OLED irradiation on photo-aged animal skin model resulted in increased collagen fiber density in the dermis while reducing ultra violet radiation-mediated skin wrinkles and roughness, as shown in the skin replica. Conclusion: This study established comparable effectiveness between OLED and LED irradiation in upregulating collagen and growth factor expression levels while downregulating MMP levels in vitro. In the UV-irradiated animal skin model, OLED expo sure post UV radiation correlated with reduced skin wrinkles and augmented dermal collagen density. Accelerated wound recov ery and demonstrated safety further underscore OLEDs’ potential as a future PBM modality alongside LEDs, offering promise in the realms of skin rejuvenation and wound healing.

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