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A Combination of Gold Nanoparticles and Laser Photobiomodulation to Boost Antioxidant Defenses in the Recovery of Muscle Injuries Caused by Bothrops Jararaca Venom

Abstract

Methods: 108 Swiss male mice were used, divided into nine groups (n = 12) with different combinations of treatments. Animals were inoculated with 250 µg of B. jararaca venom at the right gastrocnemius muscle. The treatment started 12 h after the venom injection and occurred daily for 7 days. AS was administered as recommended by the Ministry of Health. Low-power aluminum gallium indium phosphide (AlGaInP) with continuous emission (wavelength 660 nm; average power 30 mW ± 20%; beam size of 0.06310 cm; and dose of 2 J for ± 1 min per point). Irradiation was applied to five distinct areas surrounding the wound, at a perpendicular angle to the skin. The groups treated with GNPs received treatment through the application of 1 mL of 20 nm GNPs (30 mg/L). Muscle, heart, and kidneys were removed for histological and biochemical analysis.

Results: GNPs can improve the results achieved by PBM and the standard treatment, presenting significant benefits in histological parameters, such as the increase of new blood vessels, fibroblasts, collagen, and a reduction of inflammatory infiltrate.

Conclusion: GNPs can be considered an option to accelerate the recovery of Bothrops lesions.

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