Antioxidant Evaluation of the Aqueous Extract of Hulls of Campsiandra laurifolia in Colitis Induced by Acetic Acid in Wistar Rats

Avaliação antioxidante do extrato aquoso de cascas de Campsiandra laurifolia na colite induzida por ácido acético em ratos Wistar

Abstract

Due to the ethnopharmacological use of Campsiandra laurifolia (Fabaceae), popularly known as Acapurana, to treat wounds and ulcers, associated with the lack of alternative treatments for intestinal inflammations such as ulcerative colitis (UC), the present work sought to characterize its phytochemical and antioxidant activities, and to evaluate remedial action in experimental colitis with acetic acid. Phytochemical analyzes were performed through qualitative and quantitative colorimetric tests of the main secondary metabolites. In the colitismodel, 24male Wistar rats aged±60 days oldwere used, divided into 4 groups: Control (CO) control+aqueous extract of C. laurifolia 50mg/kg (CO+A50); Colitis (CL); and Colitis+aqueous extract of C. laurifolia 50 mg/kg (CL+ A50).Measurement of sphincter anal pressure and histological tests of the large intestine, lipoperoxidation (LPO), enzymeactivity of superoxide dismutase (SOD), and levels of glutathione (GSH)were performed. For statistical analysis, the oxidative stress (OS) results were expressed as means±standard error, adopting a significance level of p<0.05. The screening indicated the presence of flavonoids, saponins and tannins in the extract, with high levels of phenolic

Keywords:
antioxidant; tannins; oxidative stress; colitis