Fig. (7) Modulatory effect of the antioxidant compounds on PQ-induced catalase activity. Both males (A) and females (B) showed a marked increase in the activity of catalase when exposed to multipledose of PQ. Antioxidant compounds (4-Hydroxyisophthalic acid-DHA-I, Nicotinamide-NA, Ellagic Acid-EA, Quercetin-Que) prevented the PQ-induced changes in the catalase activity. Values are mean±S.E. and bars denoted by identical lowercase alphabets (a–c) indicate no significant difference, whereas, values denoted by different alphabets indicate a statistically significant difference (p<0.05).