estrogen

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estrogen

 [es´tro-jen]
a generic term for any of the estrus-producing compounds (female sex hormones), including estradiol, estriol, and estrone. Called also estrogenic hormone. In humans, the estrogens are formed in the ovary, adrenal cortex, testis, and fetoplacental unit, and are responsible for female secondary sex characteristic development, and during the menstrual cycle, act on the female genitalia to produce an environment suitable for fertilization, implantation, and nutrition of the early embryo. Uses for estrogens include oral contraceptives, hormone replacement therapy, advanced prostate or postmenopausal breast carcinoma treatment, and osteoporosis prophylaxis.
conjugated e's a mixture of the sodium salts of the sulfate esters of estrone and equilin; therapeutic uses are similar to those of other estrogens; administered orally, intravenously, intramuscularly, or intravaginally.
esterified e's a mixture of esters of estrogenic substances, principally estrone, having therapeutic uses similar to those of other estrogens.

es·tro·gen

(es'trō-jen),
Generic term for any substance, natural or synthetic, that exerts biologic effects characteristic of estrogenic hormones such as 17β-estradiol. Estrogens are formed by the ovary, placenta, testes, and possibly the adrenal cortex, as well as by certain plants; they stimulate secondary sexual characteristics, and exert systemic effects, such as growth and maturation of long bones, and are used therapeutically in any disorder attributable to estrogen deficiency or amenable to estrogen therapy, such as menstrual disorders and menopausal problems. They control the course of the menstrual cycle.
Synonym(s): estrin, oestrogen
[G. oistrus, -heat, estrus, + -gen, producing]

estrogen

/es·tro·gen/ (es´tro-jen) a generic term for estrus-producing compounds; the female sex hormones, including estradiol, estriol, and estrone. In humans, the estrogens are formed in the ovary, adrenal cortex, testis, and fetoplacental unit, and are responsible for female secondary sex characteristic development, and, during the menstrual cycle, act on the female genitalia to produce an environment suitable for fertilization, implantation, and nutrition of the early embryo. Uses for estrogens include oral contraceptives, hormone replacement therapy, advanced prostate or postmenopausal breast carcinoma treatment, and osteoporosis prophylaxis.
conjugated estrogens  a mixture of the sodium salts of the sulfate esters of estrone and equilin, having the actions and uses of estrogens.
esterified estrogens  a mixture of the sodium salts of esters of estrogenic substances, principally estrone; the uses are those of estrogens.

estrogen

also

oestrogen

(ĕs′trə-jən)
n.
1. Any of several steroid hormones, such as estradiol and estrone, that are produced primarily by the ovaries, stimulate the development and maintenance of female secondary sex characteristics, exert systemic effects such as the growth and maturation of long bones, and promote estrus in many female mammals. Estrogens synthesized from plant sources or obtained from horses are used as drugs, primarily to treat estrogen deficiency.
2. Any of several synthetic compounds that mimic the physiologic activity of estrogen, such as ethinyl estradiol, used primarily in oral contraceptives.

es′tro·gen′ic (-jĕn′ĭk) adj.
es′tro·gen′i·cal·ly adv.

estrogen

[es′trojən]
Etymology: Gk, oistros, gadfly, genein, to produce
one of a group of hormonal steroid compounds that promote the development of female secondary sex characteristics. Human estrogen level is elaborated in the ovaries, adrenal cortices, testes, and fetoplacental unit. During the menstrual cycle, estrogen renders the female genital tract suitable for fertilization, implantation, and nutrition of the early embryo. Pharmaceutic preparations of estrogen are used in oral contraceptives to prevent pregnancy, palliate certain types of postmenopausal breast cancer and prostatic cancer, inhibit lactation, and treat threatened abortion and ovarian disease. Estrogen replacement therapy may be prescribed to relieve the vasomotor symptoms of menopause. Its long-term continued use increases the risk of endometrial carcinoma. Kinds of estrogen are conjugated estrogen, esterified estrogen, estradiol, estriol, and estrone. Also spelled oestrogen. Formerly called estrin. estrogenic, adj.

estrogen

American spelling of oestrogen.

Pronunciation
Medspeak-UK: pronounced, EE stoh gen
Medspeak-US: pronounced, ESS troh gen

estrogen

Any of the estrus-related steroids, which include estradiol, estriol, estrone Site of production Ovaries, adrenal cortex, adipose tissue, in the fetus, placenta; estrogen is responsible for the 2º ♀ sex characteristics, and, during the menstrual cycle, prepares the endometrium for implantation ↑ in Ovarian tumors, adrenal feminizing tumors, some adrenal and testicular tumors, precocious puberty, gynecomastia ↓ in OCs, ovarian failure. See Designer estrogen, Estradiol, Estriol, Estrone, Estrus, Hormonal replacement therapy, Oral contraceptive, Phytoestrogen, Progesterone.

es·tro·gen

(es'trŏ-jen)
Generic term for any substance, natural or synthetic, which exerts biologic effects characteristic of estrogenic hormones; formed by the ovary, placenta, testes, and possibly the cortex of the suprarenal gland, as well as by some plants; stimulates secondary sexual characteristics and exerts systemic effects, such as growth and maturation of long bones; until recently, given after menopause or oophorectomy to prevent heart attack and prevent osteoporosis; also used to prevent or stop lactation, suppress ovulation, and palliate carcinoma of the breast and prostate.
Synonym(s): oestrogen.
[G. oistrus, -heat, estrus, + -gen, producing]

estrogen

see OESTROGEN.

Estrogen

Female hormone produced by the ovaries and released by the follicles as they mature. Responsible for female sexual characteristics, estrogen stimulates and triggers a response from at least 300 tissues, and may help some types of breast cancer to grow. After menopause, the production of the hormone gradually stops.

estrogen (esˑ·tr·jin),

n hormone that maintains secondary female sex characteristics.

es·tro·gen

(es'trŏ-jen)
Generic term for any substance, natural or synthetic, which exerts biologic effects characteristic of estrogenic hormones; formed by the ovary, placenta, testes, and possibly the cortex of the suprarenal gland, as well as by some plants; stimulates secondary sexual characteristics and exerts systemic effects, such as growth and maturation of long bones; also used to prevent or stop lactation, suppress ovulation, and palliate carcinoma of the breast and prostate.
Synonym(s): oestrogen.
[G. oistrus, -heat, estrus, + -gen, producing]

estrogen

a generic term for estrus-producing compounds; the naturally occurring female sex hormones include estradiol, estriol and estrone.
In animals the estrogens are formed in the ovary, adrenal cortex, testis and fetoplacental unit, and are responsible for female secondary sex characteristic development, and act on the female genitalia to produce an environment suitable for fertilization, implantation and nutrition of the early embryo. A very important function is the creation of a state of sexual receptivity in the female.

conjugated e's
a mixture of sulfate esters of estrogenic substances, principally estrone and equilin; the uses are those of estrogens.
esterified e's
a mixture of esters of estrogenic substances, principally estrone; the uses are those of estrogens.
fungal estrogen
Fusarium graminearum (F. roseum) produces zearalenone which has estrogenic activity.
placental estrogen
see estrogen (above).
plant estrogen
subterranean and red clover may contain significant amounts of an isoflavone, genistein, with estrogenic activity. See also estrogenism.
estrogen poisoning
estrogen-responsive dermatosis
a bilaterally symmetrical alopecia, sometimes with seborrhea, seen in spayed bitches; responsive to treatment with estrogens such as diethylstilbestrol.
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