Abstract
The aim of the present study was to evaluate the in vivo response of different wavelengths (red and near-infrared) of light-emitting diode (LED) on full-thickness skin grafts (FTSG) in rats. Thirty rats were randomly allocated into three experimental groups: control group (C); red LED treated group (R); and near-infrared LED group (NIR). Skin grafts were irradiated daily for ten consecutive days, starting immediately after the surgery using a red (630 nm) or near-infrared (850 nm) LED. The results showed that the red wavelength LED significantly enhanced the skin graft score in relation to the NIR group and increased transforming growth factor beta (TGF-β) protein expression and density of collagen fibers compared with the other experimental groups. These results suggest that the red wavelength LED was efficient to improve the dermo-epidermal junction and modulate the expression proteins related to tissue repair.
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This study was financially supported by the Brazilian funding agency FAPESP project # 2015/13501-3.
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The present study was approved by the Animal Care Committee guidelines at the Federal University of São Carlos (protocol 8577280716) and it was conducted according to the Guiding Principles for the Use of Laboratory Animals.
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Martignago, C.C.S., Tim, C.R., Assis, L. et al. Effects of red and near-infrared LED light therapy on full-thickness skin graft in rats. Lasers Med Sci 35, 157–164 (2020). https://doi.org/10.1007/s10103-019-02812-6
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DOI: https://doi.org/10.1007/s10103-019-02812-6