Résumé
Objective: To evaluate the effect of p-coumaric acid against adriamycin-induced hepatotoxicity in rats. Methods: The rats were divided into 4 groups. The control group received solvent; the p-coumaric acid group was treated with 100 mg/kg of p-coumaric acid orally for five consecutive days; the adriamycin group was administered with a single dose of adriamycin (15 mg/kg, i.p.), and the p-coumaric acid + adriamycin group was given p-coumaric acid five days before adriamycin administration. Twenty-four hours after the last administration, blood samples were collected for biochemical analysis, and liver tissues were removed for histopathological and immunohistochemistrical studies. Moreover, the levels of tissue lipid peroxidation and enzyme activities of glutathione peroxidase, superoxide dismutase, and catalase in liver tissue were measured. Results: Treatment with p-coumaric acid protected the liver from the toxicity of adriamycin by attenuating the increase in alkaline phosphatase, alanine transaminase, aspartate transaminase, total bilirubin, total cholesterol, triglyceride, and low-density lipoprotein cholesterol and lessening the decrease in high-density lipoprotein cholesterol and albumin. p-Coumaric acid also raised the levels of glutathione peroxidase, superoxide dismutase, and catalase, as well as decreased lipid peroxidation in liver tissue and hepatic IL- 1β expression. Additionally, histopathological study confirmed the protective effect of p-coumaric acid against liver damage. Conclusions: P-Coumaric acid can alleviate adriamycin-induced hepatotoxicity.
Résumé
Objective: To evaluate the effect of p-coumaric acid against adriamycin-induced hepatotoxicity in rats. Methods: The rats were divided into 4 groups. The control group received solvent; the p-coumaric acid group was treated with 100 mg/kg of p-coumaric acid orally for five consecutive days; the adriamycin group was administered with a single dose of adriamycin (15 mg/kg, i.p.), and the p-coumaric acid + adriamycin group was given p-coumaric acid five days before adriamycin administration. Twenty-four hours after the last administration, blood samples were collected for biochemical analysis, and liver tissues were removed for histopathological and immunohistochemistrical studies. Moreover, the levels of tissue lipid peroxidation and enzyme activities of glutathione peroxidase, superoxide dismutase, and catalase in liver tissue were measured. Results: Treatment with p-coumaric acid protected the liver from the toxicity of adriamycin by attenuating the increase in alkaline phosphatase, alanine transaminase, aspartate transaminase, total bilirubin, total cholesterol, triglyceride, and low-density lipoprotein cholesterol and lessening the decrease in high-density lipoprotein cholesterol and albumin. p-Coumaric acid also raised the levels of glutathione peroxidase, superoxide dismutase, and catalase, as well as decreased lipid peroxidation in liver tissue and hepatic IL- 1β expression. Additionally, histopathological study confirmed the protective effect of p-coumaric acid against liver damage. Conclusions: P-Coumaric acid can alleviate adriamycin-induced hepatotoxicity.
Résumé
Grape seed proanthocyanidin extract [GSPE] has a broad spectrum of biologic properties against oxidative stress. This study aimed to investigate the effects of GSPE on biochemical factors and antioxidant enzymes of erythrocyte in diabetic rats. Diabetes was induced through single injection of streptozotocin [50 mg.Kg[-1], i.p]. Forty Male Sprague-Dawley rats were divided into four Groups: Group 1, healthy control group; Group 2, healthy group treated with GSPE [200 mg.Kg[-1]]; Group 3, diabetic control group; Group 4, diabetic group treated with GSPE [200 mg.Kg[-1]] for 4 weeks. At the end, the experimental animals were sacrificed and blood samples were collected and plasma parameters and erythrocytes antioxidant status were evaluated. The results show, treatment with GSPE significantly reduced [P<0.001] urine volume, proteinuria and biochemical factors such as blood urea nitrogen, creatinine, triglyceride, total cholesterol, low density lipoprotein and very low density lipoprotein as well as malondialdehyde. Also GSPE treatment significantly [P<0.005] increased high density lipoprotein, total protein and albumin. Moreover GSPE significantly increased antioxidant enzymes activity such as: superoxide dismutase, glutathione peroxidase and catalase. These results suggest that GSPE can ameliorate biochemical abnormalities and antioxidant system status in streptozotocin- induced diabetic rats probably by its potent antioxidant features