. 2005 Jan 21;11(3):403–406. doi: 10.3748/wjg.v11.i3.403

Table 2.

Activity of antioxidative enzymes and levels of non-enzymatic antioxidants in colorectal cancersand normal colon mucosae.

	Variable	n	Activity of antioxidative enzymes (U/g tissue)				Level of non-enzymatic antioxidants (nmol/g tissue)
	Variable	n	Cu, Zn-SOD	CAT	GSH-Px	GSSG-R	GSH	Vit.C	Vit.E
Histological	Adc.G2	60	304±38^b	73±15^a	1892±583^a	759±242^a	151±37	439±85^a	31.9±9.5^a
type/grade of	Adc.G3	6	318±48^d	62±18^c	2005±591^c	795±228^c	143±35	407±92^d	29.7±9.2^c
colorectal cancer	Adc. muc	15	363±72^f,i	40±14^f,i,k	2143±623^f	880±194^f	144±43	398±104^f	33.5±8.5^e
Clinical stage of	II	46	237±42^b	76±14^a	1854±552^a	737±228^a	174±36^a	458±88^a	33.1±9.1^a
colorectal cancer	III	29	289±47^d,g	57±16^c,g	1987±699^c	824±236^c	156±39^c	399±90^d,g	29.1±9.4^c
	IV	6	421±58^f,i,k	33±18^f,i,k	2467±368^f,i	951±243^f,i	150±48^e	325±92^f,i	13.3±10.3^f,i,k
Control (normal colon mucosa)			117±25	84±17	1723±189	625±112	167±15	513±64	37.5±5.2

Statistical differences: see Table 1.