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This study is aimed at evaluating the effects of Securigera securidaca (SS) seed extract on cholestatic liver injury induced by bile duct ligation (BDL) in rats. Total polyphenols and flavonoids in SS seed extract were determined using a colorimetric assay, and their components were quantified using HPLC. Rats in four groups underwent BDL at the common bile duct and were treated for 21 days with either oral distilled water as vehicle, vitamin C, 100 mg/kg SS seed extract, or 200 mg/kg SS seed extract. Rats in the fifth group underwent abdominal incision without BDL and were treated with distilled water, and rats in the sixth group were healthy and received nothing. Finally, rats were sacrificed, blood samples were analyzed through biochemical methods, liver tissues were histologically assessed, and the expression of the TGFβ-1, iNOS, caspase-3, and α-SMA genes in the liver was assessed through real-time PCR. BDL significantly increased, and SS seed extract significantly decreased the serum levels of bilirubin and liver function enzymes. Moreover, SS seed extract suppressed the expression of the TGFβ-1, iNOS, caspase-3, and α-SMA genes, reduced the levels of nitric oxide, malondialdehyde, and protein carbonyl, and increased the levels of glutathione, total antioxidant capacity, and SOD and catalase enzyme activity in the serum and liver. Extract at a dose of 100 mg/kg had significant positive effects on liver morphology and parenchyma structure in a dose-dependent manner.

The Protective Effects of Securigera securidaca Seed Extract on Liver Injury Induced by Bile Duct Ligation in Rats