2022-11-212022-11-212021https://repositorioacademico.universidadebrasil.edu.br/handle/123456789/210The poisoning of the Bothrops jararacussu (jararacuçu) snake (B.jararacussu) causes local effects such as pain, swelling, inflammation, hemorrhage and myonecrosis. OBJECTIVE: The aim of this study was to evaluate the use of ozonized sunflower oil (OZO) associated or not with photobiomodulation (FBM) in the local effects promoted by Bothrops jararacussu venom. MATERIAL AND METHODS: Bothrops jararacussu venom was injected into the right gastrocnemius muscle (30 µg/50 µl NaCl 0.9%; i.m.) and the animals were euthanized 3 and 24 h later. The oil was ozonized using a corona generator (Ozone & Life® Model R&L1.5RM) and the FBM was used with the following parameters: Thera Laser, DMC®, red 685 nm, 4 J/cm2, 100 mW, 0.3 cm2, 1 .2 J, 12 s, spot. FBM was applied immediately after inoculation of the venom and OZO was also applied immediately after inoculation of the venom soaked in gauze for 15 minutes. In the control groups, the animals were injected with saline solution (NaCl 0.9%) and treated with OZO or FBM. In the groups injected with the venom, the animals were treated with OZO and FBM applied separately or together. The animals were anesthetized, the muscles removed, rinsed with PBS (phosphate buffer solution), fixed in 10% formaldehyde for 3 to 24 h, processed by routine histology techniques and stained with Hematoxylin and Eosin. The histological sections were analyzed under a light microscope and the cells counted and measured using the J imaging program. Necrotic and normal cells were evaluated, quantitative and morphometric analysis was performed, cellular edema was quantified by measuring the area and weight of the muscles and determined the levels of creatine kinase (CK) release. Data were submitted to ANOVA and Tukey-Kramer tests (p< 0.05). RESULTS: The results showed that the venom promotes myonecrosis of muscle cells characterized by edema and rupture of muscle cells. It promotes intracellular edema and CK release due to disruption of cell membranes. Treatment with FBM and OZO, applied separately, protects the muscle from the action of venom toxins, decreasing intracellular edema and decreasing CK release. OZO applied alone provided better protection than FBM. The association of FBM with OZO did not promote a synergistic effect in this protection. CONCLUSIONS: We conclude that due to the beneficial effects observed in these results, OZO can become an adjuvant treatment in poisoning. promoted by Bothrops jararacussu together with the antivenom, reducing the local harmful effects. This improvement is due to the therapeutic effects of OZO.PDFpt-BRopenAccessVeneno de Bothrops jararacussuFotobiomodulaçãoÓleo Ozonizado de GirassoldoctoralThesisCS