Antioxidant activity of Thespesia populnea bark extracts against carbon tetrachloride-induced liver injury in rats.

Antioxidant activity of the aqueous (AET) and methanolic extracts (MET) of the Thespesia populnea bark was investigated in rats by inducing liver injury with carbon tetrachloride:olive oil (1:1). The extracts exhibited significant antioxidant activity showing increased levels of glutathione peroxidase (GPX), glutathione S-transferase (GST), glutathione reductase (GRD), superoxide dismutase (SOD) and catalase (CAT) and decreased level of lipid peroxidation (LPO). Thespesia populnea bark extracts, AET and MET, at a dose level of 500mg/kg showed significant antioxidant activity against carbon tetrachloride-induced liver injury in rats.