Mucilagem de Ocotea puberula (Rich.) NEES.: desenvolvimento de um fitomedicamento e testes “in vivo” para cicatrização de feridas

Abstract

The objectives of this research were to develop and evaluate one phytomedications for wound healing containing mucilage of Ocoteapuberula (Rich) Nees. Materials and method:The collection and preparation of the bark was carried out in native species of the “Campos Gerais” region of Ponta Grossa PR, Brazil, and it was submitted to a hydroalcoholic technique for extracting the mucilage, using different techniques for the application or not of heat up to 60 ° C. The lyophilized samples from the Ocoteapuberulahydroalcoholic extract (OPHE) were analyzed by DTG / TG, FTIR techniques for analysis of the extracts in the different extractions, as well as quantification of extraction yield of EHOP. Subsequently, semipermeable membranes of carboxymethylcellulose (CMC) and polyvinyl acetate (PVA) impregnated with 10% OPHE were formulated. At the same time, the rheological and FTIR analysis of the membranes was performed. Pure CMC and PVA membranes incorporated with OPHEwere tested in rats by application to a lesion on the animal's back. As a positive control the Megisorb dressing was used and negative the distilled water. The lesions were evaluated for lesion retraction index, histological analysis of wounds for inflammation, angiogenesis and collagenesis, and laboratory analysis of blood samples from animals for hepatic or renal toxicity. Results: Extraction through heating at 60 ° C provided a better yield associated with a higher concentration of alkaloid compounds, with FTIR similarity of the extraction without use of heat, and rheological analysis showed a potential for the absorption of stress forces without deformation. The FTIR spectra of CMC and PVA membranes suggested improved stability of EHOP in PVA. Histological analyzes allowed visualizing healing potential for the CMC / EHOP and EHOP groups, without hepatic or renal toxicity in both groups, thus suggesting a phytotherapeutic potential in the application of EHOP in wounds.