Óleo de girassol ozonizado favorece a cicatrização de feridas induzidas pelo veneno de Lachesis muta muta em ratos wistar

Abstract

The accident by the snake of the genus Lachesis muta muta occurring in the Amazon rainforest causes both local and systemic effects and the severity at the time of care depends on the time of its occurrence. Antivenom is indispensable, but has little local effects, therefore, the objective of this study was to evaluate the effects of the dose of 1mg/Kg of laquetic poison at the inoculation site, topical treatment with ozonated sunflower oil, associated or not to antivenom in rats. Four groups of rats (n = 10 each group) were distributed in: control - 0.9% sodium chloride solution (C); poison + ozonized sunflower oil (VOZ); poison (V); ozonized sunflower oil (OZ). Six hours after application of the poison, the animals received the antivenom. The inoculated limb was evaluated for 17 days by means of morphological, thermographic, histological and fractal dimension (FD) evaluation. The poison caused pain, edema, inflammation, ulcer, crust and necrosis, local hypothermia on the second day and reduced areas of higher temperature for groups V and VOZ. In the VOZ group there was a reduction in pain, ulcer, crust, necrosis and less inflammatory infiltrate; collagen in FD was higher for groups V, followed by VOZ and OZ. It is concluded that the poison of Lachesis muta muta at a dose of 1mg/Kg causes severe local effects on the inoculated limb, ozonated sunflower oil favors the repair of these effects and does not cause a local adverse reaction.