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Prasterone
Prasterone, also known as dehydroepiandrosterone (DHEA) and sold under the brand names Intrarosa, Diandrone, and Gynodian Depot among others, is a medication as well as over-the-counter dietary supplement which is used to correct DHEA deficiency due to adrenal insufficiency or old age, as a component of menopausal hormone therapy, to treat painful sexual intercourse due to vaginal atrophy, and to prepare the cervix for childbirth, among other uses. It is taken by mouth, by application to the skin, in through the vagina, or by injection into muscle. Side effects of prasterone in women include symptoms of masculinization like oily skin, acne, increased hair growth, voice changes, and increased sexual desire, headaches, insomnia, and others. The compound is a naturally occurring prohormone of androgens and estrogens and hence is an agonist of the androgen and estrogen receptors, the respective biological targets of androgens like testosterone and estrogens like estradio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prasterone Enanthate
Prasterone enanthate, also known as dehydroepiandrosterone enanthate (DHEA-E) and sold in combination with estradiol valerate under the brand name Gynodian Depot among others, is a weak androgen, estrogen (medication), estrogen, and neurosteroid medication which is used as a component of menopausal hormone therapy to treat menopausal symptoms in women. It is available only as an injection (medicine), injectable preparation in combination with estradiol valerate. The medication is given by intramuscular injection, injection into muscle typically once every 4 weeks. Prasterone enanthate is a synthetic compound, synthetic androgen, estrogen (medication), estrogen, and neurosteroid. It is a steroid ester and a long-lasting prodrug of prasterone (dehydroepiandrosterone; DHEA) in the body. Prasterone is a natural product, naturally occurring prohormone of androgens and estrogens and hence is an agonist of the androgen receptor, androgen and estrogen receptors, the respective biolo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prasterone Sodium Sulfate
Prasterone sulfate (brand names Astenile, Mylis, Teloin, others), also known as dehydroepiandrosterone sulfate (DHEA-S), is a naturally occurring androstane steroid which is marketed and used in Japan and other countries as a labor inducer in the treatment of insufficient cervical ripening and dilation during childbirth.Sakai, T., Sakaguchi, M., Adachi, Y., Kawashima, T., & Awata, N. (1992). The Biological Fate of Sodium Prasterone Sulfate after Vaginal Administration II: Distribution after Single and Multiple Administration to Pregnant Rats. 薬物動態, 7(1), 87-101. It is the C3β sulfate ester of prasterone (dehydroepiandrosterone; DHEA), and is known to act as a prohormone of DHEA and by extension of androgens and estrogens, although it also has its own activity as a neurosteroid. Prasterone sulfate is used medically as the sodium salt via injection and is referred to by the name sodium prasterone sulfate (). Prasterone sulfate is available in Japan, Italy, Portugal, Arg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dehydroepiandrosterone Sulfate
Dehydroepiandrosterone sulfate, abbreviated as DHEA sulfate or DHEA-S, also known as androstenolone sulfate, is an endogenous androstane steroid that is produced by the adrenal cortex. It is the 3β-sulfate ester and a metabolite of dehydroepiandrosterone (DHEA) and circulates in far greater relative concentrations than DHEA. The steroid is hormonally inert and is instead an important neurosteroid and neurotrophin. Biological activity Neurosteroid activity Similarly to other conjugated steroids, DHEA-S is devoid of hormonal activity, lacking affinity for the steroid hormone receptors. However, DHEA-S retains activity as a neurosteroid and neurotrophin. It has been found to act as a positive allosteric modulator of the NMDA receptor (50 nM–1 μM), negative allosteric modulator of the GABAA and glycine receptors, and weak agonist of the sigma-1 receptor (Kd > 50 μM). In addition, DHEA-S has been found to directly bind to and activate the TrkA and p75NTR – ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neurosteroid
Neurosteroids, also known as neuroactive steroids, are endogenous or exogenous steroids that rapidly alter neuronal excitability through interaction with ligand-gated ion channels and other cell surface receptors. The term ''neurosteroid'' was coined by the French physiologist Étienne-Émile Baulieu and refers to steroids synthesized in the brain. The term, ''neuroactive steroid'' refers to steroids that can be synthesized in the brain, or are synthesized by an endocrine gland, that then reach the brain through the bloodstream and have effects on brain function. The term neuroactive steroids was first coined in 1992 by Steven Paul and Robert Purdy. In addition to their actions on neuronal membrane receptors, some of these steroids may also exert effects on gene expression via nuclear steroid hormone receptors. Neurosteroids have a wide range of potential clinical applications from sedation to treatment of epilepsy and traumatic brain injury. Ganaxolone, a synthetic analog of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dihydrotestosterone
Dihydrotestosterone (DHT, 5α-dihydrotestosterone, 5α-DHT, androstanolone or stanolone) is an endogenous androgen sex steroid and hormone. The enzyme 5α-reductase catalyzes the formation of DHT from testosterone in certain tissues including the prostate gland, seminal vesicles, epididymides, skin, hair follicles, liver, and brain. This enzyme mediates reduction of the C4-5 double bond of testosterone. Relative to testosterone, DHT is considerably more potent as an agonist of the androgen receptor (AR). In addition to its role as a natural hormone, DHT has been used as a medication, for instance in the treatment of low testosterone levels in men; for information on DHT as a medication, see the androstanolone article. Biological function DHT is biologically important for sexual differentiation of the male genitalia during embryogenesis, maturation of the penis and scrotum at puberty, growth of facial, body, and pubic hair, and development and maintenance of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Androstanediol
Androstanediol may refer to: * 3α-Androstanediol (5α-androstane-3α,17β-diol) – an endogenous neurosteroid, weak androgen and estrogen, and intermediate to androsterone * 3β-Androstanediol (5α-androstane-3β,17β-diol) – an endogenous estrogen and intermediate to epiandrosterone * 3α-Etiocholanediol (5β-androstane-3α,17β-diol; etiocholane-3α,17β-diol) – an endogenous intermediate to etiocholanolone * 3β-Etiocholanediol (5β-androstane-3β,17β-diol; etiocholane-3β,17β-diol) – an endogenous intermediate to epietiocholanolone See also * Etiocholanediol * Androstenediol * Androstanedione * Androstenedione * Androstanolone * Androstenolone Androstenolone may refer to: * Testosterone (androst-4-en-17β-ol-3-one), an endogenous androgen/anabolic steroid and an intermediate in the biosynthesis of estradiol * Epitestosterone (androst-4-en-17α-ol-3-one), an inactive endogenous steroid * ... Androstanes {{Chemistry index ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Estrone
Estrone (E1), also spelled oestrone, is a steroid, a weak estrogen, and a minor female sex hormone. It is one of three major endogenous estrogens, the others being estradiol and estriol. Estrone, as well as the other estrogens, are synthesized from cholesterol and secreted mainly from the gonads, though they can also be formed from adrenal androgens in adipose tissue. Relative to estradiol, both estrone and estriol have far weaker activity as estrogens. Estrone can be converted into estradiol, and serves mainly as a precursor or metabolic intermediate of estradiol. It is both a precursor and metabolite of estradiol. In addition to its role as a natural hormone, estrone has been used as a medication, for instance in menopausal hormone therapy; for information on estrone as a medication, see the estrone (medication) article. Biological activity Estrone is an estrogen, specifically an agonist of the estrogen receptors ERα and ERβ. It is a far less potent estrogen than i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Estradiol
Estradiol (E2), also spelled oestradiol, is an estrogen steroid hormone and the major female sex hormone. It is involved in the regulation of the estrous and menstrual female reproductive cycles. Estradiol is responsible for the development of female secondary sexual characteristics such as the breasts, widening of the hips and a female-associated pattern of fat distribution. It is also important in the development and maintenance of female reproductive tissues such as the mammary glands, uterus and vagina during puberty, adulthood and pregnancy. It also has important effects in many other tissues including bone, fat, skin, liver, and the brain. Though estradiol levels in males are much lower than in females, estradiol has important roles in males as well. Apart from humans and other mammals, estradiol is also found in most vertebrates and crustaceans, insects, fish, and other animal species. Estradiol is produced especially within the follicles of the ovaries, but al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Urine
Urine is a liquid by-product of metabolism in humans and in many other animals. Urine flows from the kidneys through the ureters to the urinary bladder. Urination results in urine being excreted from the body through the urethra. Cellular metabolism generates many by-products that are rich in nitrogen and must be cleared from the bloodstream, such as urea, uric acid, and creatinine. These by-products are expelled from the body during urination, which is the primary method for excreting water-soluble chemicals from the body. A urinalysis can detect nitrogenous wastes of the mammalian body. Urine plays an important role in the earth's nitrogen cycle. In balanced ecosystems, urine fertilizes the soil and thus helps plants to grow. Therefore, urine can be used as a fertilizer. Some animals use it to mark their territories. Historically, aged or fermented urine (known as lant) was also used for gunpowder production, household cleaning, tanning of leather and dyeing of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Over-the-counter
Over-the-counter (OTC) drugs are medicines sold directly to a consumer without a requirement for a prescription from a healthcare professional, as opposed to prescription drugs, which may be supplied only to consumers possessing a valid prescription. In many countries, OTC drugs are selected by a regulatory agency to ensure that they contain ingredients that are safe and effective when used without a physician's care. OTC drugs are usually regulated according to their active pharmaceutical ingredient (API) rather than final products. By regulating APIs instead of specific drug formulations, governments allow manufacturers the freedom to formulate ingredients, or combinations of ingredients, into proprietary mixtures. The term ''over-the-counter'' (''OTC'') refers to a medication that can be purchased without a medical prescription. In contrast, prescription drugs require a prescription from a doctor or other health care professional and should only be used by the prescribed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Medication
A medication (also called medicament, medicine, pharmaceutical drug, medicinal drug or simply drug) is a drug used to diagnose, cure, treat, or prevent disease. Drug therapy ( pharmacotherapy) is an important part of the medical field and relies on the science of pharmacology for continual advancement and on pharmacy for appropriate management. Drugs are classified in multiple ways. One of the key divisions is by level of control, which distinguishes prescription drugs (those that a pharmacist dispenses only on the order of a physician, physician assistant, or qualified nurse) from over-the-counter drugs (those that consumers can order for themselves). Another key distinction is between traditional small molecule drugs, usually derived from chemical synthesis, and biopharmaceuticals, which include recombinant proteins, vaccines, blood products used therapeutically (such as IVIG), gene therapy, monoclonal antibodies and cell therapy (for instance, stem cell th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Androstenediol
Androstenediol, or 5-androstenediol (abbreviated as A5 or Δ5-diol), also known as androst-5-ene-3β,17β-diol, is an endogenous weak androgen and estrogen steroid hormone and intermediate in the biosynthesis of testosterone from dehydroepiandrosterone (DHEA). It is closely related to androstenedione (androst-4-ene-3,17-dione). Biological activity Androstenediol is a direct metabolite of the most abundant steroid produced by the human adrenal cortex, DHEA. It is less androgenic than the related compound, Δ4-androstenediol, and has been found to stimulate the immune system. When administered to rats, androstenediol, '' in vivo'', has approximately 1.4% of the androgenicity of DHEA, 0.54% of the androgenicity of androstenedione, and 0.21% of the androgenicity of testosterone. Androstenediol possesses potent estrogenic activity, similarly to DHEA and 3β-androstanediol. It has approximately 6% and 17% of the affinity of estradiol at the ERα and ERβ, respectively. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
