Photobiomodulation Therapy Decreases Oxidative Stress in the Lung Tissue after Formaldehyde Exposure: Role of Oxidant/Antioxidant Enzymes

Figure 5

Photobiomodulation therapy increases activity of glutathione s-transferase and peroxidase enzymes after FA exposure in the lung. Group of rats was exposed to FA inhalation (1%, 90 min/day, 3 days) and treated or not with LLLT (30 mW, 1.8 J, 60 s/point, total 540 s, 1 and 5 h after each FA inhalation). In parallel, group of rats were treated only with laser and nonmanipulated rats were used to obtain basal parameters. The activities of glutathione s-transferase, reductase, and peroxidase were determined 24 h after the last FA inhalation. Data mean ± SEM of 6 animals per group. in relation to N, and L groups; in relation to FA group.

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