The effects of 780-nm low-level laser therapy on muscle healing process after cryolesion

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dc.contributor.authorBrunelli, Roberta de Matos
dc.contributor.authorRodrigues, Natalia Camargo
dc.contributor.authorRibeiro, Daniel Araki [UNIFESP]
dc.contributor.authorFernandes, Kelly Rossetti [UNIFESP]
dc.contributor.authorMagri, Angela Maria Paiva [UNIFESP]
dc.contributor.authorAssis, Livia [UNIFESP]
dc.contributor.authorParizotto, Nivaldo Antonio
dc.contributor.authorCliquet, Alberto
dc.contributor.authorRenno, Ana Claudia Muniz [UNIFESP]
dc.contributor.authorAbreu, Daniela Cristina Carvalho de
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2016-01-24T14:35:02Z
dc.date.available2016-01-24T14:35:02Z
dc.date.issued2014-01-01
dc.description.abstractThe objective of this study was to assess the effects of 780-nm low-level laser therapy at different periods of 7, 14 and 21 days after cryolesion, including the dose (10 or 50 J/cm(2)), to promote a better muscle repair evidenced by histopathological and immunohistochemical analyses. Fifty-four male rats were divided into three groups: injured control group (CG)-injured animals without any treatment; injured 780-nm laser-treated group, at 10 J/cm(2) (G10); and injured 780-nm laser-treated group, at 50 J/cm(2) (G50). Each group was divided into three subgroups (n = 6): 7, 14 and 21 days post-injury. Histopathological findings revealed better organised muscle fibres in the G10 and G50 during the periods of 7 and 14 days compared to the CG. the G10 and G50 during the 7 days showed a significant reduction (p < 0.05) of lesion area compared to the CG, without differences between groups treated for 14 and 21 days. the G10 showed an increase of the amount of vessels after 14 days compared to the G50, but not in relation to controls. With regard to the immunohistochemical analyses of the MyoD factor, the G10 and G50 during the 7 days showed higher concentrations of immunomarkers than controls. Myogenin immunomarkers were similarly observed at days 7 and 14 in all the three groups analysed, whereas immunomarkers were found in none of the groups after 21 days of laser therapy. the results showed that laser, regardless the applied dose, has positive effects on muscle repair.en
dc.description.affiliationState Univ Campinas UNICAMP, Post Grad Program Surg, Fac Med Sci, Campinas, SP, Brazil
dc.description.affiliationFed Univ Sao Carlos UFSCar, Dept Physiotherapy, São Paulo, Brazil
dc.description.affiliationFed Univ São Paulo UNIFESP, Dept Biosci, São Paulo, Brazil
dc.description.affiliationUniv São Paulo, Sch Med, Dept Biomech Med & Rehabil Locomotor Syst, BR-14049900 São Paulo, Brazil
dc.description.affiliationUnifespFed Univ São Paulo UNIFESP, Dept Biosci, São Paulo, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.format.extent91-96
dc.identifierhttps://dx.doi.org/10.1007/s10103-013-1277-6
dc.identifier.citationLasers in Medical Science. London: Springer London Ltd, v. 29, n. 1, p. 91-96, 2014.
dc.identifier.doi10.1007/s10103-013-1277-6
dc.identifier.issn0268-8921
dc.identifier.urihttps://repositorio.unifesp.br/handle/11600/37227
dc.identifier.wosWOS:000329834200012
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofLasers in Medical Science
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.rights.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dc.subjectPhysical resourceen
dc.subjectQualitative histological analysisen
dc.subjectVessel countingen
dc.subjectLesion areaen
dc.subjectMyoDen
dc.subjectMyogeninen
dc.titleThe effects of 780-nm low-level laser therapy on muscle healing process after cryolesionen
dc.typeinfo:eu-repo/semantics/article
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