Figure 4. Brain effect of hypoxia followed by normoxia, with or without DEDTC, on mitochondrial dehydrogenase activities, levels of reactive species and the antioxidant-related responses.

(A) Mitochondrial activities (n = 7–9 per group), levels of NO•, O₂•⁻ and •OH scavenger capacities (n = 4–5 per group). (B) SH content and SOD activity (n = 4–5 per group). Data are presented as the means ± SEM. Distinct letters indicate statistical differences between groups at p < 0.05 level (two-way ANOVA followed by Tukey’s post hoc test).