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Abstract Title:

Insulin resistance is improved in high-fat fed mice by photobiomodulation therapy at 630 nm.

Abstract Source:

J Biophotonics. 2019 Nov 9:e201960140. Epub 2019 Nov 9. PMID: 31707768

Abstract Author(s):

Gabriela Silva, Cleber Ferraresi, Rodrigo Teixeira de Almeida, Mariana Lopes Motta, Thiago Paixão, Vinicius Oliveira Ottone, Ivana Alice Fonseca, Murilo Xavier Oliveira, Etel Rocha-Vieira, Marco Fabrício Dias-Peixoto, Elizabethe Adriana Esteves, Cândido Celso Coimbra, Fabiano Trigueiro Amorim, Flávio de Castro Magalhães

Article Affiliation:

Gabriela Silva

Abstract:

Photobiomodulation therapy (PBMT) in the infrared spectrum exerts positive effects on glucose metabolism, but the use of PBMT at the red spectrum has not been assessed. Male Swiss albino mice were divided into low-fat control (LFC) and high-fat diet (HFD) for 12 weeks and were treated with red (630 nm) PBMT or no treatment (Sham) during weeks 9-12. PBMT was delivered at 31.19 J/cm, 60 J total dose per day for 20 days. In HFD-fed mice, PBMT improved glucose tolerance, insulin resistance, and fasting hyperinsulinemia. PBMT also reduced adiposity and inflammatory infiltrate in adipose tissue. Phosphorylation of Akt in epididymal adipose tissue and rectus femoralis muscle was improved by PBMT. In epididymalfat PBMT reversed the reduced phosphorylation of AS160 and the reduced Glut4 content. In addition, PBMT reversed the alterations caused by HFD in rectus femoralis muscle on proteins involved in mitochondrial dynamics and β-oxidation. In conclusion, PBMT at red spectrum improved insulin resistance and glucose metabolism in HFD-fed mice. This article is protected by copyright. All rights reserved.

Study Type : Animal Study

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