title: Comparison of levels of cytosol estrogen receptors with "arterial" and "venous" concentrations of gonadic steroids in mammary tumors.
abstract: Plasma steroid concentrations measured in the post-menopausal women with breast cancer showed a close correlation between the various androgens. The post-menopausal women exhibited a correlation between estrogen receptors (ER) and "arterial" 17 alpha-hydroxyprogesterone levels in the breast. ER levels expressed as a function of plasma (arterial) steroid (P/17 P) molar concentration ratio were distributed within a hyperbola, suggesting the existence of a control mechanism for breast cell ER levels.
mesh_terms: D000368:Aged; D000728:Androgens / Q000097:blood*; D001158:Arteries; D001943:Breast Neoplasms / Q000378:metabolism*; D003600:Cytosol / Q000378:metabolism; D004967:Estrogens / Q000097:blood*; D005260:Female; D006801:Humans; D008593:Menopause; D008875:Middle Aged; D011374:Progesterone / Q000097:blood*; D011960:Receptors, Estrogen / Q000378:metabolism*; D014680:Veins
chemical_list: D000728:Androgens; D004967:Estrogens; D011960:Receptors, Estrogen; D011374:Progesterone