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. 2010 Oct 5;25(4):371–375. doi: 10.1007/s12291-010-0052-8

Table 2.

Changes in enzymatic antioxidants in liver tissue and lipid peroxidation level in plasma and liver tissue of normal and experimental rats

Groups Superoxide dismutase (U#/mg protein) Catalase (U#/mg protein) Glutathione peroxidase (U#/mg protein) TBARS Hydroperoxides
Plasma (mM/dl) Liver (mM/100 g tissue) Plasma (mM/dl) Liver (mM/100 g tissue)
Normal 6.38a ± 0.38 71.16a ± 4.23 6.09a ± 0.42 0.16a ± 0.01 0.93a ± 0.05 9.29a ± 0.72 95.24a ± 8.10
Normal + CA (40 mg/kg) 6.34a ± 0.44 74.88a ± 5.18 6.16a ± 0.33 0.15a ± 0.01 0.89a ± 0.07 8.64a ± 0.64 89.48a ± 7.61
Normal + OXT (200 mg/kg) 3.43b ± 0.22 48.65b ± 3.09 2.23b ± 0.14 0.32b ± 0.02 1.64b ± 0.13 16.47b ± 1.5 142.78b ± 11.59
OXT (200 mg/kg) + CA (40 mg/kg) 5.23c ± 0.23 63.44c ± 2.82 5.40c ± 0.29 0.18c ± 0.01 1.15c ± 0.09 10.25c ± 0.57 113.06c ± 9.18

Values are mean ± SD of six rats for each group; CA caffeic acid, OXT oxytetracycline

Values not sharing a common superscript letters (a–c) differ significantly at P < 0.05 (DMRT)

#Units of enzyme activity expressed

SOD, one unit of activity was taken as the enzyme reaction, which gave 50% inhibition of NBT reduction in 1 min; CAT, μ moles of hydrogen peroxide consumed/min/mg protein; GPx, μg of glutathione consumed/min/mg protein