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