Table 3.

Serum GST-α concentrations by GSTM1/GSTT1 genotype, sampling day, and diet: the ratio between response to basal and vegetable diets

	Diet Periodsa
	GST-α, pg/ml	Ratiosb
Genotype	Basalc	Single/ Basal	Double/ Basal	Double/ Single	Single + Apiaceous/ Basal	Single + Apiaceous/ Single	Single + Apiaceous/ Double
Overall
Day 7	3433 ± 185	1.13 ± 0.07d	1.14 ± 0.07d	1.00 ± 0.06	1.00 ± 0.06	0.88 ± 0.05d	0.88 ± 0.05d
Day 11	3520 ± 190	1.11 ± 0.07	1.15 ± 0.07d	1.03 ± 0.06	1.07 ± 0.07	0.96 ± 0.06	0.93 ± 0.06
Day 14	3488 ± 188	1.05 ± 0.06	1.11 ± 0.07	1.06 ± 0.06	1.01 ± 0.06	0.96 ± 0.06	0.90 ± 0.06
GSTM1+/GSTT1+
Day 7	3263 ± 265	1.00 ± 0.09	1.12 ± 0.10	1.11 ± 0.10	1.10 ± 0.10	1.09 ± 0.10	0.98 ± 0.09
Day 11	3081 ± 250	1.03 ± 0.09	1.23 ± 0.11d	1.20 ± 0.11c	1.11 ± 0.10	1.08 ± 0.09	0.90 ± 0.08
Day 14	3143 ± 255	1.03 ± 0.09	1.13 ± 0.10	1.09 ± 0.10	1.09 ± 0.10	1.06 ± 0.09	0.97 ± 0.09
GSTM1-null/GSTT1+
Day 7	3637 ± 278	0.96 ± 0.08	1.08 ± 0.09	1.12 ± 0.10	0.93 ± 0.08	0.97 ± 0.08	0.86 ± 0.07
Day 11	3550 ± 272	1.03 ± 0.09	0.99 ± 0.08	0.96 ± 0.08	1.01 ± 0.08	0.99 ± 0.08	1.03 ± 0.09
Day 14	3319 ± 257	1.07 ± 0.09	1.15 ± 0.10	1.08 ± 0.09	1.05 ± 0.09	0.98 ± 0.08	0.91 ± 0.08
GSTM1-null/GSTT1-null
Day 7	3409 ± 402	1.50 ± 0.19d	1.21 ± 0.17	0.81 ± 0.11	0.97 ± 0.14	0.65 ± 0.09d	0.80 ± 0.12
Day 11	3989 ± 470	1.31 ± 0.17d	1.25 ± 0.17	0.96 ± 0.13	1.09 ± 0.15	0.84 ± 0.12	0.88 ± 0.13
Day 14	4068 ± 480	1.06 ± 0.14	1.07 ± 0.15	1.01 ± 0.14	0.89 ± 0.13	0.84 ± 0.12	0.83 ± 0.12

^aBasal = fruit/vegetable-free; Single = single-dose cruciferous; double = double-dose cruciferous; all vegetable diets adjusted per kg BW.

^bThe difference of the back-transformed LS-means between diets as indicated.

^cLS-means ± SE, adjusted for baseline and feeding period day 0 serum GST-α concentrations.

^dSignificantly different at P<0.05.