RESUMO
Some of natural and synthetic products have antioxidant properties which protect the liver against the destructive factors. This study aimed to investigate the effect of Zizphus Vulgaris extracts on mice liver. This experimental study was conducted at Yasouj University of Medical Sciences in 2010 on 30 healthy adult male Wistar rats. Animals were randomly divided into five equal groups: the control group [receiving, olive oil], control group [receiving olive oil and carbon tetrachloride and three intervention groups] receiving different dose of carbon tetrachloride and olive oil] groups. The intervention group was given daily doses of 200, 400 and 600 mg per Kg of Zizphus Vulgaris extract by gavage respectively. After 45 days, the amount of liver enzymes, total protein, albumin and bilirubin in animal's sera were measured. Data were analyzed by the SPSS software, using ANOVA and t-test. The concentration of total protein, albumin, AST, ALT, ALP in test groups I, II and III receiving Z.Vulgaris extract [200, 400 and 600 mg/kg weight] compared with control group were statistically not significant. Consumption of Z.Vulgaris reduced the bilirubin concentration in test groups I and II but this decrease was significant only in the test group I of Z.Vulgaris dose in the test group III [600 mg Z.Vulgaris per kg body weight] showed increase in the level of serum bilirubin. Increase in the ratio of liver weight to body weight of rats in groups I and III in comparison with control groups was noticed although this difference was not statistically significant. Findings of this study revealed that dosage of 600 mg/kg extract of Z.Vulgaris caused significant improvements in CCU induced liver necrosis [P< 0.01] and reduced portal cells inflammation [P <0.01]. Dose of 400 mg/kg of Z.Vulgaris induced some destruction and necrosis of liver cells in animals but significant reduction of portal cells inflammation was seen. Considering the obtained results, it seems that Ziziphus vulgaris fruit extract has shielding effects against toxins on liver cells