TABLE 2

Inhibition of EE 3-O-sulfation in human cytosol by both quercetin and estrone Inhibition is expressed as the activity remaining (percentage) relative to a solvent control. The final concentration of EE was 3 nM in all experiments. Values represent the mean (n = 3) ± S.E.


Tissue (Human)

Quercetin (1 μM)

Estrone (40 nM)
Liver Cytosol 22 ± 5 20 ± 5
Jejunum Cytosol 21 ± 3 25 ± 5
Ileum Cytosol
23 ± 6
21 ± 4