Expression and alterations of different molecular form γ-glutamyl transferase and total RNA concentration during the carcinogenesis of rat hepatoma

Table 3 The changes in specific activities of different GGT forms at different stages of rat hepatomas

Groups	n	Hepatic homogenate GGT (U/g)
		S (Soluble-type)	T-S (Membrane-type)	S/T-GGT
Control	6	0.74 ± 0.14	0.32 ± 0.14	0.71 ± 0.08
2nd week	6	3.35 ± 2.83a	1.42 ± 0.23	0.72 ± 0.14
4th week	6	7.07 ± 0.92b	2.29 ± 1.28b	0.76 ± 0.10
6th week	6	3.50 ± 0.70b	2.45 ± 1.25b	0.60 ± 0.15
8th week	6	8.68 ± 5.24b	2.39 ± 1.52b	0.74 ± 0.18
10th week	6	12.21 ± 5.49b	3.82 ± 1.32b	0.73 ± 0.13
12th week	5	9.56 ± 2.27b	6.15 ± 4.36b	0.64 ± 0.24

^aP < 0.05,

^bP < 0.01, compared with the control group.