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Effect of SYA on antioxidant enzyme activities. The cardiomyocytes were pretreated with SYA (40, 60, and 80 nmol/L) or NAC (200 μmol/L) for 24 h, and subjected to A/R as described in Methods section. The cells lysate was centrifugated, and then the supernatant was assayed for activities of GSH (A), GSH-Px (B), SOD (C), and catalase (D). Data were presented as mean±SD of three experiments. cP<0.01 as compared with control. fP<0.01 as compared with the model group.
