High energy Gallium Arsenide laser does not facilitate collagen alteration in muscle skeletal extracellular matrix: experimental study
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Fisioterapia em Movimento |
Texto Completo: | https://periodicos.pucpr.br/fisio/article/view/23262 |
Resumo: | Introduction: Low intensity laser therapy has proven effective in treating different tissues, reducing inflammation, preventing the formation of fibrous tissue, and promoting muscle regeneration. Objective: To evaluate the effect of low intensity laser therapy, seven days after the injury, and verify whether the radiated energy chosen influences the formation of fibrous tissue. Methods: Thirty Wistar rats, adult male, average body weight 210-340 g were used. The animals were randomized into three groups: control group, untreated injured group (L), and injured and treated group (LT). After anesthetizing the animals, muscle injury was induced by freezing (cryoinjury) in the central region of the tibialis anterior muscle belly (TA) on the left hind limb, through an iron rod previously immersed in liquid nitrogen. A Gallium Arsenide laser, wavelength 904 nm was used. The applications were initiated 24 hours after injury, daily, for five days, at two points in the lesion area. After 7 days, the animals were euthanized; the TA muscle of the left hind limb was removed and frozen in liquid nitrogen and the obtained histological sections were subjected to Sirius Red staining. Results: Histological analysis showed no significant difference in relation to the area of fibrosis in the LT and L groups. Conclusion: The results suggest that the energy density of 69 J/cm² and final energy (4.8 joules) did not promote alterations in the area of collagen in the skeletal muscle extracellular matrix. |
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Fisioterapia em Movimento |
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High energy Gallium Arsenide laser does not facilitate collagen alteration in muscle skeletal extracellular matrix: experimental studyIntroduction: Low intensity laser therapy has proven effective in treating different tissues, reducing inflammation, preventing the formation of fibrous tissue, and promoting muscle regeneration. Objective: To evaluate the effect of low intensity laser therapy, seven days after the injury, and verify whether the radiated energy chosen influences the formation of fibrous tissue. Methods: Thirty Wistar rats, adult male, average body weight 210-340 g were used. The animals were randomized into three groups: control group, untreated injured group (L), and injured and treated group (LT). After anesthetizing the animals, muscle injury was induced by freezing (cryoinjury) in the central region of the tibialis anterior muscle belly (TA) on the left hind limb, through an iron rod previously immersed in liquid nitrogen. A Gallium Arsenide laser, wavelength 904 nm was used. The applications were initiated 24 hours after injury, daily, for five days, at two points in the lesion area. After 7 days, the animals were euthanized; the TA muscle of the left hind limb was removed and frozen in liquid nitrogen and the obtained histological sections were subjected to Sirius Red staining. Results: Histological analysis showed no significant difference in relation to the area of fibrosis in the LT and L groups. Conclusion: The results suggest that the energy density of 69 J/cm² and final energy (4.8 joules) did not promote alterations in the area of collagen in the skeletal muscle extracellular matrix.Editora PUCPRESS2017-11-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.pucpr.br/fisio/article/view/2326210.1590/1980-5918.030.S01.AO29Fisioterapia em Movimento (Physical Therapy in Movement); Vol. 30 (2017): Suppl 1Fisioterapia em Movimento; v. 30 (2017): Suppl 11980-5918reponame:Fisioterapia em Movimentoinstname:Pontifícia Universidade Católica do Paraná (PUC-PR)instacron:PUC_PRenghttps://periodicos.pucpr.br/fisio/article/view/23262/pdfCopyright (c) 2022 PUCPRESSinfo:eu-repo/semantics/openAccessde Souza, Beatriz BarbosaConsoli, Érika ZanfolinFreire, Ana Paula Coelho Figueirade Oliveira, Geovana Leticia FernandesPacagnelli, Francis Lopesde Freitas, Carlos Eduardo Assumpção2022-03-07T19:02:11Zoai:ojs.periodicos.pucpr.br:article/23262Revistahttps://periodicos.pucpr.br/fisioPRIhttps://periodicos.pucpr.br/fisio/oairubia.farias@pucpr.br||revista.fisioterapia@pucpr.br1980-59180103-5150opendoar:2022-03-07T19:02:11Fisioterapia em Movimento - Pontifícia Universidade Católica do Paraná (PUC-PR)false |
dc.title.none.fl_str_mv |
High energy Gallium Arsenide laser does not facilitate collagen alteration in muscle skeletal extracellular matrix: experimental study |
title |
High energy Gallium Arsenide laser does not facilitate collagen alteration in muscle skeletal extracellular matrix: experimental study |
spellingShingle |
High energy Gallium Arsenide laser does not facilitate collagen alteration in muscle skeletal extracellular matrix: experimental study de Souza, Beatriz Barbosa |
title_short |
High energy Gallium Arsenide laser does not facilitate collagen alteration in muscle skeletal extracellular matrix: experimental study |
title_full |
High energy Gallium Arsenide laser does not facilitate collagen alteration in muscle skeletal extracellular matrix: experimental study |
title_fullStr |
High energy Gallium Arsenide laser does not facilitate collagen alteration in muscle skeletal extracellular matrix: experimental study |
title_full_unstemmed |
High energy Gallium Arsenide laser does not facilitate collagen alteration in muscle skeletal extracellular matrix: experimental study |
title_sort |
High energy Gallium Arsenide laser does not facilitate collagen alteration in muscle skeletal extracellular matrix: experimental study |
author |
de Souza, Beatriz Barbosa |
author_facet |
de Souza, Beatriz Barbosa Consoli, Érika Zanfolin Freire, Ana Paula Coelho Figueira de Oliveira, Geovana Leticia Fernandes Pacagnelli, Francis Lopes de Freitas, Carlos Eduardo Assumpção |
author_role |
author |
author2 |
Consoli, Érika Zanfolin Freire, Ana Paula Coelho Figueira de Oliveira, Geovana Leticia Fernandes Pacagnelli, Francis Lopes de Freitas, Carlos Eduardo Assumpção |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
de Souza, Beatriz Barbosa Consoli, Érika Zanfolin Freire, Ana Paula Coelho Figueira de Oliveira, Geovana Leticia Fernandes Pacagnelli, Francis Lopes de Freitas, Carlos Eduardo Assumpção |
description |
Introduction: Low intensity laser therapy has proven effective in treating different tissues, reducing inflammation, preventing the formation of fibrous tissue, and promoting muscle regeneration. Objective: To evaluate the effect of low intensity laser therapy, seven days after the injury, and verify whether the radiated energy chosen influences the formation of fibrous tissue. Methods: Thirty Wistar rats, adult male, average body weight 210-340 g were used. The animals were randomized into three groups: control group, untreated injured group (L), and injured and treated group (LT). After anesthetizing the animals, muscle injury was induced by freezing (cryoinjury) in the central region of the tibialis anterior muscle belly (TA) on the left hind limb, through an iron rod previously immersed in liquid nitrogen. A Gallium Arsenide laser, wavelength 904 nm was used. The applications were initiated 24 hours after injury, daily, for five days, at two points in the lesion area. After 7 days, the animals were euthanized; the TA muscle of the left hind limb was removed and frozen in liquid nitrogen and the obtained histological sections were subjected to Sirius Red staining. Results: Histological analysis showed no significant difference in relation to the area of fibrosis in the LT and L groups. Conclusion: The results suggest that the energy density of 69 J/cm² and final energy (4.8 joules) did not promote alterations in the area of collagen in the skeletal muscle extracellular matrix. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-11-30 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.pucpr.br/fisio/article/view/23262 10.1590/1980-5918.030.S01.AO29 |
url |
https://periodicos.pucpr.br/fisio/article/view/23262 |
identifier_str_mv |
10.1590/1980-5918.030.S01.AO29 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://periodicos.pucpr.br/fisio/article/view/23262/pdf |
dc.rights.driver.fl_str_mv |
Copyright (c) 2022 PUCPRESS info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2022 PUCPRESS |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Editora PUCPRESS |
publisher.none.fl_str_mv |
Editora PUCPRESS |
dc.source.none.fl_str_mv |
Fisioterapia em Movimento (Physical Therapy in Movement); Vol. 30 (2017): Suppl 1 Fisioterapia em Movimento; v. 30 (2017): Suppl 1 1980-5918 reponame:Fisioterapia em Movimento instname:Pontifícia Universidade Católica do Paraná (PUC-PR) instacron:PUC_PR |
instname_str |
Pontifícia Universidade Católica do Paraná (PUC-PR) |
instacron_str |
PUC_PR |
institution |
PUC_PR |
reponame_str |
Fisioterapia em Movimento |
collection |
Fisioterapia em Movimento |
repository.name.fl_str_mv |
Fisioterapia em Movimento - Pontifícia Universidade Católica do Paraná (PUC-PR) |
repository.mail.fl_str_mv |
rubia.farias@pucpr.br||revista.fisioterapia@pucpr.br |
_version_ |
1799138748498182144 |