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Estrogen (also spelled oestrogen in British English; see spelling differences) is a category of sex hormone responsible for the development and regulation of the female reproductive system and secondary sex characteristics.
Estradiol (E2), also called oestrogen, oestradiol, is an estrogen steroid hormone and the major female sex hormone. It is involved in the regulation of female reproductive cycles such as estrous and menstrual cycles .
Suppression of estrogen receptors in the ventromedial nucleus of the hypothalamus in female rats has been observed to reduce female proceptivity and receptivity. [16] Proceptivity and receptivity in the female rat are indicators of sexual motivation, thus indicating a direct relationship between estrogen levels and sexual motivation.
Fat tissue can produce excess estrogen, so those with a higher body fat percentage may have high estrogen levels, says Dr. Guichard. There's an inverse relationship here, too: Higher estrogen ...
In females, breasts are a manifestation of higher levels of estrogen; estrogen also widens the pelvis and increases the amount of body fat in hips, thighs, buttocks, and breasts. [1] [2] Estrogen also induces growth of the uterus, proliferation of the endometrium, and menstruation. [1] Female secondary sex characteristics include:
Estrogen is a critical sex hormone for women (in conjunction with progesterone). Estrogen is responsible for all different functions in a female body, but is also seen in any gender. [1] These functions are seen in body tracts such as the skeletal system, liver, brain and breasts. [2]
Ethinylestradiol is an example of a semi-synthetic estrogen. Specific compounds that have partial agonist activity for steroid receptors may require treatment by a steroid in one cell type, and, therefore, act like natural steroid hormones. These compounds are used in certain medical conditions.
Aromatase (EC 1.14.14.14), also called estrogen synthetase or estrogen synthase, is an enzyme responsible for a key step in the biosynthesis of estrogens.It is CYP19A1, a member of the cytochrome P450 superfamily, which are monooxygenases that catalyze many reactions involved in steroidogenesis.
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