HO-1 activity in tissues was enhanced by both VitC pre- and post-treatment. Tissue samples were separately removed at 0 and 12 hours after sham or HS operation for HO-1 activity assay. *p < 0.05 vs. the Sham at the same time point; **p < 0.05 vs. the ShamV; ***
p < 0.05 vs. the HS; ****
p < 0.05 vs. the HSV-post. Data represents the mean ± SEM, n = 6. Sham: the rats which received NS and underwent sham operation; ShamV: the rats which received VitC and underwent sham operation; ShamVZ: some ShamV rats further received ZnPP; HS: the rats which received NS and underwent HS operation; HSV-post: the rats which underwent HS operation and then received VitC immediately; HSV-postZ: some HSV-post rats further received ZnPP.