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Article Publish Status: FREE
Abstract Title:

Low-Level Laser Therapy Reduces Lung Inflammation in an Experimental Model of Chronic Obstructive Pulmonary Disease Involving P2X7 Receptor.

Abstract Source:

Oxid Med Cell Longev. 2018 ;2018:6798238. Epub 2018 Mar 4. PMID: 29686745

Abstract Author(s):

Gabriel da Cunha Moraes, Luana Beatriz Vitoretti, Auriléia Aparecida de Brito, Cintia Estefano Alves, Nicole Cristine Rigonato de Oliveira, Alana Dos Santos Dias, Yves Silva Teles Matos, Manoel Carneiro Oliveira-Junior, Luis Vicente Franco Oliveira, Renata Kelly da Palma, Larissa Carbonera Candeo, Adriana Lino-Dos-Santos-Franco, Anna Carolina Ratto Tempestine Horliana, João Antonio Gimenes Júnior, Flavio Aimbire, Rodolfo Paula Vieira, Ana Paula Ligeiro-de-Oliveira

Article Affiliation:

Gabriel da Cunha Moraes

Abstract:

Chronic obstructive pulmonary disease (COPD) is a progressive disease characterized by irreversible airflow limitation, airway inflammation and remodeling, and enlargement of alveolar spaces. COPD is in the top five leading causes of deaths worldwide and presents a high economic cost. However, there are some preventive measures to lower the risk of developing COPD. Low-level laser therapy (LLLT) is a new effective therapy, with very low cost and no side effects. So, our objective was to investigate if LLLT reduces pulmonary alterations in an experimental model of COPD. C57BL/6 mice were submitted to cigarette smoke for 75 days (2x/day). After 60 days to smoke exposure, the treated group was submitted to LLLT (diode laser, 660 nm, 30 mW, and 3 J/cm) for 15 days and euthanized for morphologic and functional analysis of the lungs. Our results showed that LLLT significantly reduced the number of inflammatory cells and the proinflammatory cytokine secretion such as IL-1, IL-6, and TNF-in bronchoalveolar lavage fluid (BALF). We also observed that LLLT decreased collagen deposition as well as the expression of purinergic P2X7 receptor. On the other hand, LLLT increased the IL-10 release. Thus, LLLT can be pointed as a promising therapeutic approach for lung inflammatory diseases as COPD.

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