Table 1.

– Drug-metabolizing enzymes in the liver of rats fed the EGCG diet for 1 week.

	Control	EGCG 0.18 %	EGCG 0.54 %
Testosterone 6Β-hydroxylase (CYP3A) (pmol/min/mg protein)	798.9± 43.8	599.7± 121.6*	452.2± 109.4*
ρp-Nitrophenol 6-hydroxylase (CYP2E1) (pmol/min/mg protein)	325.5± 27.1	371.0± 34.0	357.3± 16.6
Methoxyresorufin O-demethylase (CYP1A2) (pmol/min/mg protein)	31.0± 4.5	34.0± 5.6	29.5± 4.5
UDP-glucurosyltransferase (nmol/min/mg protein)	53.9± 22.2	34.0± 3.4	24.5± 4.3*
Sulfotransferase (pmol/min/mg protein)	1,575.6± 47.5	1,386.0± 26.0*	1,397.1± 38.6*
Glutathione S-transferase (nmol/min/mg protein)	148.2± 4.4	108.9± 3.5*	116.4± 10.1*

Results are expressed as the mean± S.D. of three rats in each dietary group. *Significantly different from control group, P < 0.05.