Figure 3.

The glutathione peroxidase (GPx) activity in rats exposed to ozone during the acute and chronic phases: (a) the preventive administration of dietary curcumin in the preventive approach at the end of the acute phase presented increased activity of GPx (* p < 0.05) when compared to the AO group. Similarly, the AT group showed increased GPx activity (p < 0.01) compared to the acute ozone-exposed control group OA; acute O₃ (AO), acute intact (AI), acute CUR (AC), acute preventive (AP), acute therapeutic (AT); (b) the effect of curcumin in the CP and CT groups (* p < 0.01) resulted significantly increased GPx activity (* p < 0.05) compared to the chronic ozone-exposed control CO group; chronic O₃ (CO), chronic intact (CI), chronic CUR (CC), chronic preventive (CP), chronic therapeutic (CT).