Brassica nigra plays a remedy role in hepatic and renal damage.
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BACKGROUND
Black mustard [Brassica nigra (L.) Koch] of the Brassicaceae (Cruciferae) family is commonly used as a spice and a cheap source of antimicrobial agents for bacterial infections.
OBJECTIVE
The present investigation was to demonstrate the protective effect of the methanol extract of B. nigra leaves against D-galactosamine (D-GalN)-induced hepatic and nephrotoxicity in Wistar rats.
METHODS
Activity of the methanol extract of B. nigra at doses of 200 and 400 mg/kg b.wt. against D-GalN (500 mg/kg b.wt.) induced toxicity, with silymarin used as the standard. Histological damage, activities of serum marker enzyme, hematological changes, metabolites such as bilirubin, urea, uric acid, and creatinine levels, tissue thiobarbutric acid reactive substance, enzymic and non-enzymic antioxidants and inflammatory marker enzymes such as myeloperoxidase, cathepsin D, and acid phosphatase were assessed.
RESULTS
The D-GalN-induced toxicity was evident from a significant increase (p < 0.001) in the serum and tissue inflammatory markers in toxic rats, when compared with the control (saline alone treated animals). The B. nigra pretreated groups (200 and 400 mg/kg b.wt.) showed significant (p < 0.001) reduction in the D-GalN-induced toxicity as obvious from biochemical parameters. Histopathological observations confirm the protective effect of B. nigra leaf extract by reduction in hepatic and renal tissue damage. Experimentals extract showed a similar effect as the standard.
CONCLUSIONS
The crude methanol extract of B. nigra leaf lacks inherent toxicity and exhibits hepatic and nephroprotective effects against D-GalN-induced toxicity in Wistar rats.
