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. 2011 Jul 6;9:103. doi: 10.1186/1479-5876-9-103

Table 3.

Antioxidant enzymes activities in brain and liver

		Young controls (yCO) (n = 8)	Untreated old rats (O) (n = 8)	Old rats treated with IGF-II (O+IGF-II) (n = 8)
In cortex	Catalase (U/mg prot)	22.8 ± 0.85	18.90 ± 1.05^a	20.2 ± 1.2^b
	SOD (U/mg prot)	3.99 ± 0.09	5.32 ± 0.38^a	4.8 ± 0.2
	GPX (mU/mg prot)	89.3 ± 2.85	77.9 ± 2.85^a	108 ± 5^b
	GRD (U/mg prot)	41.80 ± 0.09	42.75 ± 1.9	46 ± 2

In hippocampus	Catalase (U/mg prot)	9.40 ± 0.47	15.01 ± 2.09^a	7.9 ± 1.1^c
	SOD (U/mg prot)	1.23 ± 0.09	1.99 ± 0.19^d	1.3 ± 0.2^c
	GPX (mU/mg prot)	55.1 ± 2.85	83.6 ± 4.75^d	66 ± 5
	GRD (U/mg prot)	31.35 ± 0.09	42.75 ± 2.85^a	35 ± 4

In liver	Catalase (KU/mg)	2.85 ± 0.28	1.90 ± 0.19^b	2.70 ± 0.60
	SOD (U/mg)	11.59 ± 1.71	12.25 ± 1.99	18.20 ± 2.00
	GPX (U/mg)	1.04 ± 0.09	2.09 ± 0.19^b	2.10 ± 0.10^b

Values are expressed as ± SEM. prot, Protein.

^aP < 0.01 vs yCO

^bP < 0.05 vs yCO

^cP < 0.05 vs O

^dP < 0.001 vs yCO