IR decreased SOD levels in IR group when compared with the sham group. AP supplementation to IR group significantly ameliorated SOD levels (P < .05). Also, IR caused elevation of myeloperoxidase production when compared with the sham group, whereas AP treatment prevented these hazardous effects (P < .05). However, plasma total glutathione, catalase, and malondialdehyde levels did not differ between the AP + IR and the IR rats.