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The progesterone receptor (PR), also known as NR3C3 or nuclear receptor subfamily 3, group C, member 3, is a protein found inside cells. It is activated by the steroid hormone progesterone. In humans, PR is encoded by a single PGR gene residing on chromosome 11q22, [5] [6] [7] it has two isoforms, PR-A and PR-B, that differ in their molecular ...
Estrogen receptors (ERs) belong to the family of steroid hormone receptors, which are hormone receptors for sex steroids. Along with androgen receptors (ARs) and progesterone receptors (PRs), ERs play crucial roles in regulating sexual maturation and gestation .
The estrogen receptor, as well as the progesterone receptor, have been detected in the skin, including in keratinocytes and fibroblasts. [70] [71] At menopause and thereafter, decreased levels of female sex hormones result in atrophy, thinning, and increased wrinkling of the skin and a reduction in skin elasticity, firmness, and strength.
Like other steroid hormones, estrogen enters passively into the cell where it binds to and activates the estrogen receptor. The estrogen:ER complex binds to specific DNA sequences called a hormone response element to activate the transcription of target genes (in a study using an estrogen-dependent breast cancer cell line as model, 89 such ...
A sex-hormonal agent, also known as a sex-hormone receptor modulator, is a type of hormonal agent which specifically modulates the effects of sex hormones and of their biological targets, the sex hormone receptors. The sex hormones include androgens such as testosterone, estrogens such as estradiol, and progestogens such as progesterone. [1]
Sex hormones, also known as sex steroids, gonadocorticoids and gonadal steroids, are steroid hormones that interact with vertebrate steroid hormone receptors. [1] The sex hormones include the androgens, estrogens, and progestogens. Their effects are mediated by slow genomic mechanisms through nuclear receptors as well as by fast nongenomic ...
Estrogen receptor (ER) (α, β) - binds and is activated by estrogens such as estradiol, estrone, and estriol; Progesterone receptor (PR) (A, B) - binds and is activated by progestogens such as progesterone; In addition, sex steroids have been found to bind and activate membrane steroid receptors, such as estradiol and GPER.
The ERRs are orphan nuclear receptors, meaning the identity of their endogenous ligand has yet to be unambiguously determined. They are named because of sequence homology with estrogen receptors, but do not appear to bind estrogens or other tested steroid hormones. There are three human estrogen related receptors: ERRα ; ERRβ ; ERRγ
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