Moreover, AOM caused significant (P≤0.05) decrease in level of the total antioxidant capacity (TAC) and activities of the antioxidant enzymes (CAT and GPx) associated with significant (P≤0.05) elevation in concentrations of the peroxidation products (LPO and TPC) as compared to control group as shown in Table 3. This evidence concerns the gene CAT and infectious otitis media.