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Tytuł pozycji:

Effect of pre-irradiation with different doses, wavelengths, and application intervals of low-level laser therapy on cytochrome c oxidase activity in intact skeletal muscle of rats.

Tytuł:
Effect of pre-irradiation with different doses, wavelengths, and application intervals of low-level laser therapy on cytochrome c oxidase activity in intact skeletal muscle of rats.
Autorzy:
Albuquerque-Pontes GM; Postgraduate Program in Biophotonics Applied to Health Sciences, Universidade Nove de Julho (UNINOVE), Rua Vergueiro, 235, São Paulo, SP, 01504-001, Brazil.
Vieira RP
Tomazoni SS
Caires CO
Nemeth V
Vanin AA
Santos LA
Pinto HD
Marcos RL
Bjordal JM
de Carvalho Pde T
Leal-Junior EC
Źródło:
Lasers in medical science [Lasers Med Sci] 2015 Jan; Vol. 30 (1), pp. 59-66. Date of Electronic Publication: 2014 Jun 24.
Typ publikacji:
Journal Article; Research Support, Non-U.S. Gov't
Język:
English
Imprint Name(s):
Publication: London : Springer
Original Publication: London : Baillière Tindall, c1986-
MeSH Terms:
Low-Level Light Therapy*
Electron Transport Complex IV/*metabolism
Muscle, Skeletal/*enzymology
Muscle, Skeletal/*radiation effects
Animals ; Dose-Response Relationship, Radiation ; Immunohistochemistry ; Male ; Muscle Fibers, Skeletal/enzymology ; Muscle Fibers, Skeletal/radiation effects ; Rats, Wistar
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Substance Nomenclature:
EC 1.9.3.1 (Electron Transport Complex IV)
Entry Date(s):
Date Created: 20140625 Date Completed: 20151221 Latest Revision: 20220408
Update Code:
20240104
DOI:
10.1007/s10103-014-1616-2
PMID:
24957189
Czasopismo naukowe
Modulation of cytochrome c oxidase activity has been pointed as a possible key mechanism for low-level laser therapy (LLLT) in unhealthy biological tissues. But recent studies by our research group with LLLT in healthy muscles before exercise found delayed skeletal muscle fatigue development and improved biochemical status in muscle tissue. Therefore, the aim of this study was to evaluate effects of different LLLT doses and wavelengths in cytochrome c oxidase activity in intact skeletal muscle. In this animal experiment, we irradiated the tibialis anterior muscle of rats with three different LLLT doses (1, 3, and 10 J) and wavelengths (660, 830, and 905 nm) with 50 mW power output. After irradiation, the analyses of cytochrome c oxidase expression by immunohistochemistry were analyzed at 5, 10, 30 min and at 1, 2, 12, and 24 h. Our results show that LLLT increased (p < 0.05) cytochrome c oxidase expression mainly with the following wavelengths and doses: 660 nm with 1 J, 830 nm with 3 J, and 905 nm with 1 J at all time points. We conclude that LLLT can increase cytochrome c oxidase activity in intact skeletal muscle and that it contributes to our understanding of how LLLT can enhance performance and protect skeletal muscles against fatigue development and tissue damage. Our findings also lead us to think that the combined use of different wavelengths at the same time can enhance LLLT effects in skeletal muscle performance and other conditions, and it can represent a therapeutic advantage in clinical settings.

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