Avaliação do colesterol plasmático em coelhos com hipercolesterolemia induzida e tratados com extrato etanólico de própolis
Alternative titleEffect of the ethanolic própolis on the cholesterol level in rabbits with induced hypercholesterolaemia
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The propolis (bee glue) is a product rich in flavonoids, which are known for antioxidant activities, a protective action to the lipoproteins LDL-cholesterol against lipid peroxidation. Because they have antioxidant properties, we investigated the effect of the ethanolic extract propolis on the plasma level of cholesterol in rabbits (Oryctolagus cuniculus) submitted to hypercholesterolaemia. The animals were divided into 4 groups. G 1=received commercial feed and water, G 2=received enriched feed and water, G 3=received enriched feed and ethanol, G 4=received enriched feed and ethanolic extract of propolis. The hypercholesterolaemia was induced with commercial feed enriched with egg yolk. The animals received the ethanolic extract propolis at the concentration of 100 mg/kg daily. Weekly, after fast of 14 hours, the samples of blood were collected from the marginal vein of the ear. The plasma was used for the estimation total cholesterol. From the results obtained, we verified that the ethanolic extract propolis significantly reduced the plasma level cholesterol (109,59 mg/dL, p<0,05), compared to the animals treated with ethanol (331,38 mg/dL), and also to those receiving the commercial feed only, with cholesterol at 269,74 mg/dL.
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