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Selective estrogen receptor modulators represent accepted therapy for estrogen receptor positive (ER+) breast cancer, exhibit adverse side effects, and reduce patient compliance. The use of phytoestrogen containing herbal medicines is limited because of efficacy and safety concerns. The ER+ MCF-7
Evidence is accumulating that estradiol metabolites may be involved in carcinogenesis as some metabolites exert proliferative and others anti-proliferative properties on human cancer cells. The present study is the first to investigate the effect of 14 endogenous estradiol metabolites on the
Long-term estrogen deprivation (LTED) with tamoxifen (TAM) or aromatase inhibitors (AIs) leads to endocrine-resistance, whereby physiologic levels of estrogen kill breast cancer (BC). Estrogen therapy is effective in treating advanced BC patients after resistance to TAM and AIs develops. This
We examined some characteristics of first pregnancy in 314 female breast cancer patients whose disease was diagnosed at < 45 years of age and who were identified through a population-based cancer registry in New York State and in 314 control women identified through birth records. Preeclampsia was
The metabolism of estrone (E1) or estradiol-17 beta (E2) to catechols seldom has been investigated in biochemical studies related to the risk of development of human breast cancer, as a result of the extreme lability and reactivity of these hormones. A method of indirect calculation was developed in
The relationship between gender and alcohol-induced liver disease is complex; however, endotoxin is most likely involved. Recently, it was reported that estriol activated Kupffer cells by upregulation of the endotoxin receptor CD14. Therefore, the purpose of this work was to study how estriol
The Luminal A subtype of breast cancer expresses the estrogen receptor (ER)-α and progesterone receptor (PR), but not the human epidermal growth factor receptor (HER)-2 oncogene. This subtype of breast cancer responds to endocrine therapy involving the use of selective estrogen receptor modulators
The role of resveratrol (RES) in preventing breast cancer is controversial, as low concentrations may stimulate the proliferation of estrogen-receptor alpha positive (ERα+) breast cancer cells. As metabolism is the key factor in altering cellular estrogens, thereby influencing breast tumor growth,
The MTW9/PL cell line was established by our laboratory in culture from the carcinogen-induced hormone-responsive MT-W9A rat mammary tumor of a Wistar-Furth (W/Fu) rat. This tumor formed estrogen, androgen, and progesterone responsive tumors in W/Fu rats (Sirbasku, D. A., Cancer Res. 38:1154-1165;
BACKGROUND
The intensified treatment of breast cancer improves survival but has a price in terms of side-effects. The main side-effects, such as vasomotor symptoms and impaired sexual functioning, are related to premature menopause due to chemotherapy and/or anti-hormonal therapy. Though for some
Reports of the ability of estrogenic agents such as 17beta-estradiol (E2), estriol (E3) and bisphenol A (BPA) to induce micronuclei (MN) in MCF-7 breast cancer cells have prompted us to investigate whether these effects are linked to activation of the estrogen receptor (ER) alpha. Coadministration
Purpose
Postmenopausal women with estrogen receptor-positive breast
cancers often respond initially to tamoxifen or aromatase inhibitor therapy. Resistance to these treatments usually develops within 12 to 18 months. Clinical studies have demonstrated that high-dose estrogen can
Creatinine-adjusted levels of estrone, estradiol and estriol were determined in overnight urine specimens from 220 post-menopausal women, aged 54 to 66 years, from Boston (121 women) and Athens (99 women). The associations of individual and total estrogens with various characteristics of the women
A number of chemotherapeutic agents have been tested in two systems which could be useful as models in the search for effective drugs for cancer of the prostate. One system involved the effects of the administered drugs on rat prostatic 5 alpha-reductase and arginase activities. Since both enzymic
Total estrogens, estradiol and estriol were determined by radioimmunoassay in the blood of 141 pregnant women during their 26th and 31st weeks of pregnancy, and the results were correlated with dietary patterns and nutrient intakes during pregnancy, assessed through a semiquantitative food frequency