Objective:The present study was aimed at the anti-oxidative properties of koumine in H2 O2-mediated IPEC-J2 cells injury. Methods:The effect was evaluated by measuring and analyzing the changes on antioxidant capacity(SOD,LDH and MDA). The expression of Bax and Bcl-2 was measured by western blot assay,flow cytometry was used to detect ROS and apoptosis. Results:Treatment with H2 O2 could induce ROS,LDH and MDA accumulation in IPEC-J2 cells,accompanying with losses of activities of SOD. Pretreatment of koumine decreased H2 O2-induced cell apoptosis, and efficiently suppressed the intracellular ...