OBJECTIVE: The main purpose of this study was to compare the effects of low-intensity pulsed ultrasound (US) and low-level laser therapy (LLLT) on injured skeletal muscle after cryolesion by means of histopathological analysis and immunohistochemistry for cyclo-oxygenase-2 (COX-2). BACKGROUND AND METHODS: Thirty-five male Wistar rats were randomly distributed into four groups: intact control group with uninjured and untreated animals; injured control group with muscle injury and no treatment; LLLT-treated group with muscle injury treated with 830-nm laser; and US-treated group with muscle injury treated with US. Treatments started 24 h postsurgery and were performed during six sessions. RESULTS: LLLT-treated animals presented minor degenerative changes of muscle tissue. Exposure to US reduced tissue injuries induced by cryolesion, but less effectively than LLLT. A large number of COX-2 positive cells were found in untreated injured rats, whereas COX-2 immunoexpression was lower in both LLLT- and US-treated groups. CONCLUSION: This study revealed that both LLLT and US therapies have positive effects on muscle metabolism after an injury in rats, but LLLT seems to produce a better response.
OBJECTIVE: The main purpose of this study was to compare the effects of low-intensity pulsed ultrasound (US) and low-level laser therapy (LLLT) on injured skeletal muscle after cryolesion by means of histopathological analysis and immunohistochemistry for cyclo-oxygenase-2 (COX-2). BACKGROUND AND METHODS: Thirty-five male Wistar rats were randomly distributed into four groups: intact control group with uninjured and untreated animals; injured control group with muscle injury and no treatment; LLLT-treated group with muscle injury treated with 830-nm laser; and US-treated group with muscle injury treated with US. Treatments started 24 h postsurgery and were performed during six sessions. RESULTS: LLLT-treated animals presented minor degenerative changes of muscle tissue. Exposure to US reduced tissue injuries induced by cryolesion, but less effectively than LLLT. A large number of COX-2 positive cells were found in untreated injured rats, whereas COX-2 immunoexpression was lower in both LLLT- and US-treated groups. CONCLUSION: This study revealed that both LLLT and US therapies have positive effects on muscle metabolism after an injury in rats, but LLLT seems to produce a better response.
Authors: Roberta M Brunelli; Natalia C Rodrigues; Daniel A Ribeiro; Kelly Fernandes; Angela Magri; Lívia Assis; Nivaldo A Parizotto; Alberto Cliquet; Ana Claudia M Renno; Daniela C C Abreu Journal: Lasers Med Sci Date: 2013-02-14 Impact factor: 3.161
Authors: Kristianne Porta Santos Fernandes; Nadhia Helena Costa Souza; Raquel Agnelli Mesquita-Ferrari; Daniela de Fatima Teixeira da Silva; Lilia Alves Rocha; Agnelo Neves Alves; Kaline de Brito Sousa; Sandra Kalil Bussadori; Michael R Hamblin; Fábio Daumas Nunes Journal: J Photochem Photobiol B Date: 2015-10-20 Impact factor: 6.252
Authors: Gianna Móes Albuquerque-Pontes; Rodolfo de Paula Vieira; Shaiane Silva Tomazoni; Cláudia Oliveira Caires; Victoria Nemeth; Adriane Aver Vanin; Larissa Aline Santos; Henrique Dantas Pinto; Rodrigo Labat Marcos; Jan Magnus Bjordal; Paulo de Tarso Camillo de Carvalho; Ernesto Cesar Pinto Leal-Junior Journal: Lasers Med Sci Date: 2014-06-24 Impact factor: 3.161
Authors: Lívia Assis; Ana Iochabel Soares Moretti; Thalita Balsamo Abrahão; Heraldo Possolo de Souza; Michael R Hamblin; Nivaldo Antonio Parizotto Journal: Lasers Med Sci Date: 2012-08-17 Impact factor: 3.161
Authors: Lívia Assis; Ana I S Moretti; Thalita B Abrahão; Vivian Cury; Heraldo P Souza; Michael R Hamblin; Nivaldo A Parizotto Journal: Lasers Surg Med Date: 2012-09-21 Impact factor: 4.025