The Mann–Whitney U multiple comparison test with Bonferroni correction was performed to find the source of the difference revealing that the mean of sham (1.760 ± 0.027) group was significantly higher than the mean of ischemia group (1.498 ± 0.093) (p=0.006) while the mean of ischemia (1.498 ± 0.093) group was significantly lower than the mean of NAC (1.802 ± 0.166) and NACA (1.800 ± 0.101) groups (p=0.006 and p=0.004, respectively). Here, NACA is linked to ischemia.