Low-level laser on femoral growth plate in rats
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Acta Cirúrgica Brasileira (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-86502012000200004 |
Resumo: | PURPOSE: To determine the influence of low-level laser therapy on femoral growth plate in rats. METHODS: Thirty male Wistar rats aged 40 days were divided into two groups, G1 and G2. In G1 the area of the distal growth plate of the right femur was irradiated at one point using GaAlAs laser 830 nm wavelength, output power of 40 mW, at an energy density of 10 J/cm². The irradiation was performed daily for a maximum of 21 days. The same procedure was done in G2, but the probe was turned off. Five animals in each group were euthanized on days 7, 14 and 21 and submitted to histomorphometric analysis. RESULTS: In both groups the growth plate was radiographically visible at all moments from both craniocaudal and mediolateral views. On the 21st day percentage of femoral longitudinal length was higher in G2 than G1 compared to basal value while hypertrophic zone chondrocyte numbers were higher in G1 than G2. Calcified cartilage zone was greater in G1 than in G2 at all evaluation moments. Angiogenesis was higher in G1 than in G2 at 14th and 21st days. CONCLUSION: The low-level laser therapy negatively influenced the distal femoral growth plate. |
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Acta Cirúrgica Brasileira (Online) |
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Low-level laser on femoral growth plate in ratsLasersBone DevelopmentChondrocytesLaser Therapy, Low-LevelRatsPURPOSE: To determine the influence of low-level laser therapy on femoral growth plate in rats. METHODS: Thirty male Wistar rats aged 40 days were divided into two groups, G1 and G2. In G1 the area of the distal growth plate of the right femur was irradiated at one point using GaAlAs laser 830 nm wavelength, output power of 40 mW, at an energy density of 10 J/cm². The irradiation was performed daily for a maximum of 21 days. The same procedure was done in G2, but the probe was turned off. Five animals in each group were euthanized on days 7, 14 and 21 and submitted to histomorphometric analysis. RESULTS: In both groups the growth plate was radiographically visible at all moments from both craniocaudal and mediolateral views. On the 21st day percentage of femoral longitudinal length was higher in G2 than G1 compared to basal value while hypertrophic zone chondrocyte numbers were higher in G1 than G2. Calcified cartilage zone was greater in G1 than in G2 at all evaluation moments. Angiogenesis was higher in G1 than in G2 at 14th and 21st days. CONCLUSION: The low-level laser therapy negatively influenced the distal femoral growth plate.Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia2012-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-86502012000200004Acta Cirúrgica Brasileira v.27 n.2 2012reponame:Acta Cirúrgica Brasileira (Online)instname:Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia (SBDPC)instacron:SBDPC10.1590/S0102-86502012000200004info:eu-repo/semantics/openAccessOliveira,Sidney Piesco deRahal,Sheila CanevesePereira,Elenize JamasBersano,Paulo Ricardo de OliveiraVieira,Fabio de AlmeidaPadovani,Carlos Robertoeng2012-02-27T00:00:00Zoai:scielo:S0102-86502012000200004Revistahttps://www.bvs-vet.org.br/vetindex/periodicos/acta-cirurgica-brasileira/https://old.scielo.br/oai/scielo-oai.php||sgolden@terra.com.br0102-86501678-2674opendoar:2012-02-27T00:00Acta Cirúrgica Brasileira (Online) - Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia (SBDPC)false |
dc.title.none.fl_str_mv |
Low-level laser on femoral growth plate in rats |
title |
Low-level laser on femoral growth plate in rats |
spellingShingle |
Low-level laser on femoral growth plate in rats Oliveira,Sidney Piesco de Lasers Bone Development Chondrocytes Laser Therapy, Low-Level Rats |
title_short |
Low-level laser on femoral growth plate in rats |
title_full |
Low-level laser on femoral growth plate in rats |
title_fullStr |
Low-level laser on femoral growth plate in rats |
title_full_unstemmed |
Low-level laser on femoral growth plate in rats |
title_sort |
Low-level laser on femoral growth plate in rats |
author |
Oliveira,Sidney Piesco de |
author_facet |
Oliveira,Sidney Piesco de Rahal,Sheila Canevese Pereira,Elenize Jamas Bersano,Paulo Ricardo de Oliveira Vieira,Fabio de Almeida Padovani,Carlos Roberto |
author_role |
author |
author2 |
Rahal,Sheila Canevese Pereira,Elenize Jamas Bersano,Paulo Ricardo de Oliveira Vieira,Fabio de Almeida Padovani,Carlos Roberto |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Oliveira,Sidney Piesco de Rahal,Sheila Canevese Pereira,Elenize Jamas Bersano,Paulo Ricardo de Oliveira Vieira,Fabio de Almeida Padovani,Carlos Roberto |
dc.subject.por.fl_str_mv |
Lasers Bone Development Chondrocytes Laser Therapy, Low-Level Rats |
topic |
Lasers Bone Development Chondrocytes Laser Therapy, Low-Level Rats |
description |
PURPOSE: To determine the influence of low-level laser therapy on femoral growth plate in rats. METHODS: Thirty male Wistar rats aged 40 days were divided into two groups, G1 and G2. In G1 the area of the distal growth plate of the right femur was irradiated at one point using GaAlAs laser 830 nm wavelength, output power of 40 mW, at an energy density of 10 J/cm². The irradiation was performed daily for a maximum of 21 days. The same procedure was done in G2, but the probe was turned off. Five animals in each group were euthanized on days 7, 14 and 21 and submitted to histomorphometric analysis. RESULTS: In both groups the growth plate was radiographically visible at all moments from both craniocaudal and mediolateral views. On the 21st day percentage of femoral longitudinal length was higher in G2 than G1 compared to basal value while hypertrophic zone chondrocyte numbers were higher in G1 than G2. Calcified cartilage zone was greater in G1 than in G2 at all evaluation moments. Angiogenesis was higher in G1 than in G2 at 14th and 21st days. CONCLUSION: The low-level laser therapy negatively influenced the distal femoral growth plate. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-02-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-86502012000200004 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-86502012000200004 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0102-86502012000200004 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia |
publisher.none.fl_str_mv |
Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia |
dc.source.none.fl_str_mv |
Acta Cirúrgica Brasileira v.27 n.2 2012 reponame:Acta Cirúrgica Brasileira (Online) instname:Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia (SBDPC) instacron:SBDPC |
instname_str |
Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia (SBDPC) |
instacron_str |
SBDPC |
institution |
SBDPC |
reponame_str |
Acta Cirúrgica Brasileira (Online) |
collection |
Acta Cirúrgica Brasileira (Online) |
repository.name.fl_str_mv |
Acta Cirúrgica Brasileira (Online) - Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia (SBDPC) |
repository.mail.fl_str_mv |
||sgolden@terra.com.br |
_version_ |
1752126440888860672 |