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Estrogen insensitivity syndrome (EIS), or estrogen resistance, is a form of congenital estrogen deficiency or hypoestrogenism [2] which is caused by a defective estrogen receptor (ER) – specifically, the estrogen receptor alpha (ERα) – that results in an inability of estrogen to mediate its biological effects in the body. [3]
An estrogen-dependent condition can be that relating to the differentiation in the steroid sex hormone that is associated with the female reproductive system and sex characteristics. [1] These conditions can fall under the umbrella of hypoestrogenism, hyperestrogenim, or any sensitivity to the presence of estrogen in the body.
The disorders are invariably fatal before the age of 15, causing kidney failure due to nephrotic syndrome. [38] Estrogen insensitivity syndrome (EIS) – the estrogen counterpart to androgen insensitivity syndrome. Extremely rare, with only one verified case having been reported; a biological male presented with tall stature, a heightened risk ...
Sex steroid manipulation (such as hormones including androgens, estrogens, and progestogens [36]) can induce sex reversal in birds by interacting with vertebrae and hormone receptors. Aromatase inhibitors injected into chicken eggs before the gonadal differentiation stage induce testis development in ZW embryos.
Endocrinology (from endocrine + -ology) is a branch of biology and medicine dealing with the endocrine system, its diseases, and its specific secretions known as hormones.It is also concerned with the integration of developmental events proliferation, growth, and differentiation, and the psychological or behavioral activities of metabolism, growth and development, tissue function, sleep ...
In genetics, a maternal effect occurs when the phenotype of an organism is determined by the genotype of its mother. [1] For example, if a mutation is maternal effect recessive, then a female homozygous for the mutation may appear phenotypically normal, however her offspring will show the mutant phenotype, even if they are heterozygous for the mutation.
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 .
Estrogen promotes cellular development and prevents programmed cell death via activating specific pathways mediated by estrogen receptors (ER) in various types of cells. [38] Estrogen promotes the development of breast cancers that have estrogen receptor (ER) by stimulating the proliferation and survival of breast cancer cells. [39]