Deferasirox belongs to a new is a bishydroxyphenyltriazoles iron chelator used for treatment of chronic iron overload. The use of Deferasirox is associated with hepatotoxicity. Silymarin is a benzo gamma-pyrones flavonoid which affords hepatoprotection and preserves hepatocyte membranes by its antioxidant effect. Curcumin is a poly-phenol compound naturally concentrated in the herb Curcuma longa. The present study was conducted to evaluate and compare the hepatoprotective effects of both silymarin and curcumin against deferasirox-induced hepatotoxicity in rats and to explore the potential mechanisms account for their hepatoprotective effects. The present study was carried out using 32 male wistar randomly assigned into 4 groups (8 rats each) as follows; Group1: served as normal control group in which rats received distilled water (0.5ml per rat) by oral gavage. Group II (Deferasirox group) in which hepatotoxicity was induced by oral administration of deferasirox in a dose of 100 mg/kg once daily for 4 weeks dissolved in distilled water for a concentration of 35mg/ml. Group III (deferasirox+ curcumin) in which rats received curcumin in a dose of 100 mg/kg daily dose by oral gavage for 4 weeks suspended in distilled water for a concentration of 35 mg/ml one hour before administration of deferasirox. Group IV (deferasirox+ silymarin) in which rats received silymarin in dose of 7.56 mg/kg once daily by oral gavage for 4 weeks suspended in distilled water for a concentration of 2.7mg/ml one hour before administration of deferasirox. At the end of the treatment period, all rats were sacrificed by cervical dislocation, blood samples were collected for measurement of ALT, AST, ALP and total bilirubin. Liver samples were used for measurement of MDA, GSH and IL-6. Histopathological and immunohistochemistry were also done. The present data revealed that rats pretreated with curcumin or silymarin exhibited significant reduction in ALT, AST, ALP, total bilirubin, IL-6 and MDA levels with significant elevation of GSH level compared to deferasirox group. In-between group comparison revealed that there was a more significant reduction in ALT, AST, ALP, total bilirubin, IL-6 and MDA in group IV compared to group III. In conclusion, both curcumin and silymarin represent natural protective agents against Deferasirox-induced hepatotoxicity due to their antioxidant and anti-inflammatory effects.
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