Carboxytherapy affecting tissue healing in the experimental burns model

Abstract

Objective: The following study highlights the experimental assessment of carboxy therapy affecting tissue regeneration with the standard IIIB degree burns among rats. All procedures were approved by the bioethics committee. Terminal procedures were conducted in accordance with EU directive on the protection of laboratory animals.Methods: The present study included 48 female Wistar rats (180-220g, 6-8 weeks old). Animals were obtained from Rappolovo nursery for laboratory animals. Rats were held under normal conditions of light, room temperature and humidity in laboratory vivarium. The animals were divided into two groups control and experimental (n=24). Each group underwent standard burns infliction. Experimental burn was modeled in each group according to standardized research method of the dermatotropic influence of medicines. Experimental group was treated with subcutaneous administration of 0.5 ml medical CО2 3 times in intact area approx. 0.5 cm from the edge of the lesion. In control group burns healed spontaneously. The fixation of the material and the production of micropreparations was carried out using standard histological techniques. Microscopic diagnostics included a semi-quantitative assessment of the tinctorial properties of collagen fibers, measurement of their linear parameters, as well as calculation of the specific area of the microvasculature in the subepidermal area of the regenerate.Results: After terminal procedures, tissue samples were collected and processed with standard histological protocol. The analysis included tinctorial assessment of the maturity rate of collagen fibers, their linear dimensions as well as assessment of area taken by capillaries in subepidermal region.Conclusions: Present study showed increased area taken by capillaries in the subepidermal part of the wound in carboxytreated rats compared to spontaneous healing. Collagen fibers reached intact-like structure by 14 days in experimental group, whereas spontaneous heling revealed mature collagen fibers by the day 21. Thus, carboxytherapy demonstrated a potential positive effect on the wound healing through the stimulation of microvasculature in regeneration area.