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The effects of 780-nm low-level laser therapy on muscle healing process after cryolesion |
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| Authors: | Roberta M. Brunelli Natalia C. Rodrigues Daniel A. Ribeiro Kelly Fernandes Angela Magri Lívia Assis Nivaldo A. Parizotto Alberto Cliquet Jr. Ana Claudia M. Renno Daniela C. C. Abreu |
| Affiliation: | 1. Post Graduation Program of Surgery, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Campinas, Brazil 2. Department of Physiotherapy, Federal University of S?o Carlos (UFSCar), S?o Carlos, S?o Paulo, Brazil 3. Department of Biosciences, Federal University of S?o Paulo (UNIFESP), Santos, S?o Paulo, Brazil 4. Department of Biomechanics, Medicine and Rehabilitation of Locomotor System, School of Medicine, University of S?o Paulo, Avenida Bandeirantes, 3900, Ribeir?o Preto, S?o Paulo, Brazil, 14049-900 |
| Abstract: | The 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/cm2), 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/cm2 (G10); and injured 780-nm laser-treated group, at 50 J/cm2 (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? |
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