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Equine estrogens, or horse estrogens ... Binding affinities were determined via displacement studies in a variety of in-vitro systems with labeled estradiol and ...
[41] [42] For comparison, 1 mg/day oral estradiol increased SHBG levels by 45%, while 50 μg/day transdermal estradiol increased SHBG levels by 12%. [ 41 ] [ 42 ] Ethinylestradiol is more potent in its effects on liver protein synthesis than either CEEs or estradiol, with 10 μg/day oral ethinylestradiol having been found to be approximately ...
Tritiated estradiol radioactivity in blood with a single intramuscular injection of 1.5 to 2.8 μg tritiated estradiol in aqueous solution in four women. [1] Peak blood radioactivity occurred within 15 minutes in three of the women and in the remaining woman after 2 hours. [1] Source: Davis et al. (1963). [1]
Estradiol: 25 μg/day b: 50 μg/day b: 100 μg/day b: Transdermal gel: Estradiol: 0.5 mg/day: 1–1.5 mg/day: 2–3 mg/day Vaginal: Estradiol: 25 μg/day – – Estriol: 30 μg/day: 0.5 mg 2x/week: 0.5 mg/day IM Tooltip Intramuscular or SC injection: Estradiol valerate – – 4 mg 1x/4 weeks Estradiol cypionate: 1 mg 1x/3–4 weeks: 3 mg 1x/3 ...
Conjugated estrogens/medroxyprogesterone acetate (CEs/MPA), sold under the brand names Prempro and Premphase, is a combination product of conjugated equine estrogens (Premarin), an estrogen collected from horse urine, and medroxyprogesterone acetate (Provera), a progestogen, which is used in menopausal hormone therapy for the treatment of menopausal symptoms.
Estradiol production during the menstrual cycle is 30–640 µg/d (6.4–8.6 mg total per month or cycle). The vaginal epithelium maturation dosage of estradiol benzoate or estradiol valerate has been reported as 5 to 7 mg/week. An effective ovulation-inhibiting dose of estradiol undecylate is 20–30 mg/month.
The ratio of circulating estrone to circulating estradiol is the same at about 5:1 with both oral estradiol and oral estrone sulfate. [5] An investigational estrone vaginal ring was found to result in a ratio of estrone to estradiol of 4:1 or 5:1 initially, but this decreased to about 1:1 with continuous therapy.
Estradiol is an estrogen, or an agonist of the nuclear estrogen receptors (ERs), the estrogen receptor alpha (ERα) and the estrogen receptor beta (ERβ). [1] [2] [6] In one study, the EC 50 Tooltip half-maximal effective concentration value of estradiol for the human ERα was 50 pM (0.05 nM) and for the human ERβ was 200 pM (0.2 nM).