Effect of Photobiomodulation With Different Wavelengths on Radiodermatitis Treatment.

Autor:	Camargo CP; Microsurgery and Plastic Surgery Laboratory (LIM-04), School of Medicine, Universidade de São Paulo, São Paulo, Brazil., Forner-Cordero A; Biomechatronics Laboratory, Department of Mechatronics, Escola Politécnica da USP, Universidade de São Paulo, São Paulo, Brazil., Silva BM; Escola Politécnica, Universidade de São Paulo, São Paulo, Brazil., de Souza VM; Escola Politécnica, Universidade de São Paulo, São Paulo, Brazil., Cunha HS; Escola Politécnica, Universidade de São Paulo, São Paulo, Brazil., de Oliveira Feitosa Y; Escola Politécnica, Universidade de São Paulo, São Paulo, Brazil., Campello GA; Escola Politécnica, Universidade de São Paulo, São Paulo, Brazil., Dos Santos PHG; Escola Politécnica, Universidade de São Paulo, São Paulo, Brazil., Rego CL; Escola Politécnica, Universidade de São Paulo, São Paulo, Brazil., Carvalho H; Universidade de São Paulo, São Paulo, Brazil., Gemperli R; Microsurgery and Plastic Surgery Laboratory (LIM-04), School of Medicine, Universidade de São Paulo, São Paulo, Brazil.
Jazyk:	angličtina
Zdroj:	Plastic and reconstructive surgery. Global open [Plast Reconstr Surg Glob Open] 2023 Feb 02; Vol. 11 (2), pp. e4809. Date of Electronic Publication: 2023 Feb 02 (Print Publication: 2023).
DOI:	10.1097/GOX.0000000000004809
Abstrakt:	Approximately 80% of patients submitted to radiotherapy develop radiodermatitis. Photobiomodulation based on light-emitted diode (LED) is one of the therapeutic strategies for treating inflammation. This study aimed to investigate the effect of the photobiomodulation with two wavelengths, in an acute radiodermatitis animal model. Methods: Twenty rats were submitted to one radiotherapy session. After 15 days, the rats that developed radiodermatitis were divided into control groups, LED-630 nm, LED-850 nm, and LED-630 + 850 nm. The treatment regimen was one session lasting 10 minutes on alternate days for 21 days. We analyzed macroscopy aspects (RTOG scale), vascular density, dermal appendages, VEGF-a, TNF-alpha, MMP-9, and MMP-9 genic expression level. Results: All LED groups revealed a two-point reduction on the radiodermatitis severity grade compared with the baseline classification. Dermal appendage and vascular analysis showed a higher counting in all LED groups compared to control. This study showed dermal appendages twice in the 630/850 nm group compared with the control group. The 630/850 nm group showed six times more arterioles than the control group. Regarding genic expression, this study showed a 10-fold decrease between LED-630 nm versus LED-630 + 850 nm ( P = 0.02) interleukin-10 expression and a 12-fold decrease between control versus LED-630 nm ( P = 0.006) and LED-850 nm ( P = 0.002) in TNF-alpha. Conclusion: LED (630 nm, 850 nm, and 630 nm + 850 nm) showed benefit in the treatment of radiodermatitis, and the association of the 630 nm + 850 nm and 630 nm parameters demonstrated the best macroscopic and microscopic results. (Copyright © 2023 The Authors. Published by Wolters Kluwer Health, Inc. on behalf of The American Society of Plastic Surgeons.)
Databáze:	MEDLINE
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