Relationship between estrogen receptors, 17β-hydroxysteroid dehydrogenase and estrogen content in human breast cancer

YJ Abul-Hajj - Steroids, 1979 - Elsevier
Estrone and estradiol levels in tumor tissue cytosols were determined in 11 premenopausal
and 20 postmenopausal women at the same time that 17β-hydroxysteroid dehydrogenase
and estrogen receptors (ER) were carried out on their breast cancers. Estrogen receptor
positive tumors showed significantly higher levels of estrone and estradiol. However, all ER
negative tumors contained measurable amounts of both estradiol and estrone. Higher levels
of estrone were observed in ER negative tumors which correlates well with high 17β …