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1,4,6-Androstatriene-3,17-dione (ATD) is a potent irreversible aromatase inhibitor that inhibits estrogen biosynthesis by permanently binding and inactivating aromatase in adipose and peripheral tissue. [1] It is used to control estrogen synthesis. [2]
The main source of estrogen is the ovaries in premenopausal women, while in post-menopausal women most of the body's estrogen is produced via the conversion of androgens into estrogen by the aromatase enzyme in the peripheral tissues (i.e. adipose tissue like that of the breast) and a number of sites in the brain. Estrogen is produced locally ...
Aromatase inhibitors (AIs) are a class of drugs used in the treatment of breast cancer in postmenopausal women and in men, [1] [2] and gynecomastia in men. They may also be used off-label to reduce estrogen conversion when supplementing testosterone exogenously. They may also be used for chemoprevention in women at high risk for breast cancer.
[11] [4] In addition, it is described as a much more potent aromatase inhibitor than adrenal steroidogenesis inhibitor. [17] AG can inhibit aromatase by 74 to 92% and decrease circulating estradiol levels by 58 to 76% in men and postmenopausal women. [1] [7] AG is not an effective ovarian steroidogenesis inhibitor in premenopausal women. [17]
Now, new research finds that women who use hormone therapy after age 65 are usually fine to do just that — but the dose and timing of the treatment matter. The study, which was published in ...
Aromatase in fat and muscle can circulate estrogen in postmenopausal women. [12] Aromatase in highly estrogen-sensitive tissues, such as the breast, uterus, vagina, bone, and blood vessels, provides estrogen locally, so aromatase inhibitors work by reducing this estrogen production. [12]