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Effects of the Ultra-High-Frequency Electrical Field Radiofrequency Device on Mouse Skin: A Histologic and Molecular Study

Authors
Kim, MiriKim, Kyung-EunJeong, Seo-wonHwang, Se WonJo, HyunmuLee, JahyungCho, DaehoPark, Hyun Jeong
Issue Date
Aug-2016
Publisher
LIPPINCOTT WILLIAMS & WILKINS
Citation
PLASTIC AND RECONSTRUCTIVE SURGERY, v.138, no.2, pp 248e - 255e
Journal Title
PLASTIC AND RECONSTRUCTIVE SURGERY
Volume
138
Number
2
Start Page
248e
End Page
255e
URI
https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/9508
DOI
10.1097/PRS.0000000000002364
ISSN
0032-1052
1529-4242
Abstract
Background: Radiofrequency technology is one of the most recently developed methods for noninvasive skin tightening and facial contouring, and works by generating thermal energy in the deep dermis. Although clinical improvements have been reported using radiofrequency devices, there are few histologic and molecular studies about the mechanisms of dermal collagen remodeling. The authors investigated the histologic effects of an ultra-high-frequency electrical field (40.68 MHz) radiofrequency device (Polargen) on collagen remodeling in hairless mouse skin and evaluated its relative molecular mechanism. Methods: The radiofrequency was applied to the dorsal skin of hairless mice three times per week for 2 weeks. At 21 days after initial treatment, treated skin and nontreated control skin samples were excised for semiquantitative analysis of histologic features, including collagen. The authors also checked the mRNA expression levels of collagen type 1, transforming growth factor (TGF)-beta, matrix metalloproteinase-1, vascular endothelial growth factor, tumor necrosis factor-alpha, and interleukin-1. Results: Histologic examination revealed epidermal hyperplasia, increased collagen staining, and fat atrophy in treated skin area compared with the nontreated skin area. In addition, mRNA expression of collagen type., TGF-beta, and vascular endothelial growth factor in radiofrequency-treated areas was significantly increased compared with that in untreated control areas (p < 0.05, p < 0.05, and p < 0.01, respectively). Conclusions: These results suggest that the device may facilitate replacement of subcutaneous fat tissue with new collagen in association with the increased mRNA levels in TGF-beta and vascular endothelial growth factor. Therefore, this device may effectively reduce adipose tissue and achieve facial contouring in addition to skin tightening.
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대학원 (헬스산업학(협동과정))
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