Definition
The 17-beta-isomer of estradiol, an aromatized C18 steroid with hydroxyl group at 3-beta- and 17-beta-position. Estradiol-17-beta is the most potent form of mammalian estrogenic steroids. Growth promoter for livestock. Permitted in the USA Estradiol (E2 or 17?-estradiol, also oestradiol) is a sex hormone. (Wikipedia)
Description
Generally refers to the 17-beta-isomer of estradiol, an aromatized C18 steroid with hydroxyl group at 3-beta- and 17-beta-position. Estradiol-17-beta is the most potent form of mammalian estrogenic steroids. In humans, it is produced primarily by the cyclic ovaries and the placenta. It is also produced by the adipose tissue of men and postmenopausal women. The 17-alpha-isomer of estradiol binds weakly to estrogen receptors (receptors, estrogen) and exhibits little estrogenic activity in estrogen-responsive tissues. Various isomers can be synthesized.
Top Gene Interactions
Related Pathways
Estrogen Health Effects
General Information
- Metabolism:
Exogenous estrogens are metabolized using the same mechanism as endogenous estrogens. Estrogens are partially metabolized by cytochrome P450. Route of Elimination: Estradiol, estrone and estriol are excreted in the urine along with glucuronide and sulfate conjugates. Half Life: 36 hours
- Uses/Sources:
For the treatment of urogenital symptoms associated with post-menopausal atrophy of the vagina (such as dryness, burning, pruritus and dyspareunia) and/or the lower urinary tract (urinary urgency and dysuria).
- Symptoms:
Can cause nausea and vomiting, and withdrawal bleeding may occur in females.
Mechanism of Action
Target Name | Mechanism of Action | References |
---|---|---|
Estrogen receptor Glucocorticoid receptor Estrogen receptor beta Androgen receptor Progesterone receptor Nuclear receptor subfamily 1 group I member 2 Sodium-dependent dopamine transporter Cytochrome P450 2C18 |
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