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. Author manuscript; available in PMC: 2015 Jan 8.
Published in final edited form as: Free Radic Biol Med. 2013 Jun 4;66:88–99. doi: 10.1016/j.freeradbiomed.2013.05.037

Table 4. Overall distribution and effects of dietary restriction on antioxidant enzyme activity.

Catalase, GPx and SOD activities are commonly measured in studies of DR and oxidative stress. Distribution of effects between enzymes is statistically significant (Chi-squared, p<0.01).

Enzyme % Total % Decrease % Increase % No change
Catalase (n=87) 23 8 46 46
Glutathione peroxidase (n=93) 25 9 31 60
Glutathione reductase (n=20) 5 0 40 60
Glutathione (n=61) 16 2 62 36
Glutathione S-transferase (n=16) 4 13 38 50
Superoxide dismutase (n=95) 26 14 22 64