Atrophic Vaginitis

Also known as: Atrophic vaginitis / Vaginitis Atropic / Atrophic vulvovaginitis / Vulvovaginitis atrophy / Vulvovaginitis atrophic / Senile vulvovaginitis / Vaginitis atrophic

DrugDrug NameDrug Description
DB00286Conjugated estrogensThe conjugated estrogens are noncrystalline mixtures of purified female sex hormones obtained either by its isolation from the urine of pregnant mares or by synthetic generation from vegetal material. Both of these products are later conjugated to natrium sulfate by ester bonds in order to make them more water soluble.[L5605, T475] The conjugated estrogen product contains a mix of estrogen from which about 50% is represented by estrone sulfate followed by 25% of equilin sulfate, 15% of 17-alpha-dehydroequilenin sulfate, 3% of equilenin sulfate, 5% of 17-alpha and 17-beta-dihydroequilenin sulfate, 2% of 17-alpha-estradiolsulfate and 3% of 17-beta-estradiolsulfate. It also presents a large number of unidentified molecules with weak estrogenic activity as well as non-human molecules when it is obtained from pregnant mares urine.[T475] The conjugated estrogen mixture was approved for marketing in US in 1942 based on the efficacy against certain conditions. However, until 1986 official clinical trials were performed and this product was determined to be effective for the treatment of osteoporosis.[T484] The currently approved product of conjugated estrogens was developed by Wyeth Ayerst and FDA approved in 2003.[L5608]
DB00783EstradiolEstradiol (also known as E2 or 17β-estradiol) is a naturally occurring hormone that circulates endogenously within the human body. It is the most potent form of mammalian estrogenic steroids and acts as the major female sex hormone. As such, estradiol plays an essential role in the regulation of the menstrual cycle, in the development of puberty and secondary female sex characteristics, as well as in ageing and several hormonally-mediated disease states. Estrogen mediates its effects across the body through potent agonism of the Estrogen Receptor (ER), which is located in various tissues including in the breasts, uterus, ovaries, skin, prostate, bone, fat, and brain. Estradiol binds to both subtypes of the Estrogen Receptor: Estrogen Receptor Alpha (ERα) and Estrogen Receptor Beta (ERβ). Estradiol also acts as a potent agonist of G Protein-coupled Estrogen Receptor (GPER), which has recently been recognized as a major mediator of estradiol's rapid cellular effects [A31620]. Estradiol is commercially available in several hormone therapy products for managing conditions associated with reduced estrogen production such as menopausal and peri-menopausal symptoms as well as hypoestrogenism. It is also used in transgender hormone therapy, as a component of oral contraceptive pills for preventing pregnancy (most commonly as [DB00977], a synthetic form of estradiol), and is sometimes used for the palliative treatment of some hormone-sensitive cancers like breast and prostate cancer. Estradiol is available in a number of formulations including oral, transdermal, and injectable. The primary source of estrogen in normally cycling adult women is the ovarian follicle, which secretes 70 to 500 mcg of estradiol daily, depending on the phase of the menstrual cycle. However, after menopause, most endogenous estrogen is produced by conversion of androstenedione, secreted by the adrenal cortex, to estrone by peripheral tissues. Thus, estrone and the sulphate conjugated form, estrone sulphate, are the most abundant circulating estrogens in postmenopausal women [FDA Label]. Although circulating estrogens exist in a dynamic equilibrium of metabolic interconversions, estradiol is the principal intracellular human estrogen and is substantially more potent than its metabolites, estrone and estriol at the receptor level. Because of the difference in potency between estradiol and estrone, menopause (and a change in primary hormone from estradiol to estrone) is associated with a number of symptoms associated with this reduction in potency and in estrogenic effects. These include hot flashes, vaginal dryness, mood changes, irregular menses, chills, and sleeping problems. When used for oral or IM administration, estradiol is commonly synthesized as a pro-drug ester (such as [DB13952], [DB13953], [DB13954], [DB13955], and [DB13956]). It is commonly produced with an ester side-chain as endogenous estradiol has very low oral bioavailability on its own (2-10%). First-pass metabolism by the gut and the liver quickly degrades the estradiol molecule before it gets a chance to enter the systemic circulation and exert its estrogenic effects [A12102]. Esterification of estradiol aims to improve absorption after oral administration (such as with Estradiol valerate) or to sustain release from intramuscular depot injections (such as with Estradiol Cypionate) through improved lipophilicity [T84]. Following absorption, the esters are cleaved, resulting in the release of endogenous estradiol, or 17β-estradiol. Recommendations for treatment of menopausal symptoms changed drastically following the release of results and early termination of the Women's Health Initiative (WHI) studies in 2002 as a number of concerns were raised regarding the use of estrogen [A31626]. Specifically, the combined estrogen–progestin arm was discontinued after approximately five years of follow up due to a statistically significant increase in invasive breast cancer and in cardiovascular events [A31627]. Following extensive critique of the WHI results in the years following its release, Hormone Replacement Therapy (HRT) is now recommended to be used only for a short period (for 3-5 years post-menopause) in low doses, and in women without a history of breast cancer or at increased risk of cardiovascular or thromboembolic disease [A31628]. Notably, use of estrogen for menopausal symptoms should always be accompanied by a progestin component due to estrogen's effects on the endometrium; in women with an intact uterus, unopposed estrogen has been shown to promote the growth of the endometrium which can lead to endometrial hyperplasia and possibly cancer in the long-term. [DB00977] (EE) is a synthetic form of estradiol commonly used as the estrogenic component of most combination Oral Contraceptive Pills (OCPs). Ethinyl Estradiol differs from Estradiol in that it has improved biovailability and greater resistance to metabolism, making it more suitable for oral administration.
DrugDrug NameTargetType
DB00286Conjugated estrogensEstrogen receptor alphatarget
DB00286Conjugated estrogensCytochrome P450 3A4enzyme
DB00286Conjugated estrogensCytochrome P450 1A2enzyme
DB00286Conjugated estrogensCatechol O-methyltransferaseenzyme
DB00286Conjugated estrogensCanalicular multispecific organic anion transporter 2transporter
DB00286Conjugated estrogensMultidrug resistance-associated protein 4transporter
DB00286Conjugated estrogensMultidrug resistance-associated protein 1transporter
DB00286Conjugated estrogensSolute carrier organic anion transporter family member 1A2transporter
DB00286Conjugated estrogensSodium/bile acid cotransportertransporter
DB00286Conjugated estrogensSolute carrier family 22 member 10transporter
DB00286Conjugated estrogensSolute carrier family 22 member 8transporter
DB00286Conjugated estrogensSolute carrier organic anion transporter family member 1C1transporter
DB00286Conjugated estrogensSolute carrier organic anion transporter family member 1B1transporter
DB00286Conjugated estrogensSolute carrier organic anion transporter family member 2B1transporter
DB00286Conjugated estrogensP-glycoprotein 1transporter
DB00286Conjugated estrogensSolute carrier family 22 member 6transporter
DB00286Conjugated estrogensOrganic solute transporter subunit alphatransporter
DB00286Conjugated estrogensOrganic solute transporter subunit betatransporter
DB00286Conjugated estrogensCanalicular multispecific organic anion transporter 1transporter
DB00286Conjugated estrogensSolute carrier organic anion transporter family member 4A1transporter
DB00286Conjugated estrogensATP-binding cassette sub-family C member 11transporter
DB00286Conjugated estrogensSolute carrier organic anion transporter family member 1B3transporter
DB00286Conjugated estrogensSolute carrier family 22 member 11transporter
DB00286Conjugated estrogensSolute carrier organic anion transporter family member 3A1transporter
DB00286Conjugated estrogensATP-binding cassette sub-family G member 2transporter
DB00286Conjugated estrogensThyroxine-binding globulincarrier
DB00286Conjugated estrogensSex hormone-binding globulincarrier
DB00286Conjugated estrogensSerum albumincarrier
DB00286Conjugated estrogensEstrogen receptor betatarget
DB00783EstradiolEstrogen receptor alphatarget
DB00783EstradiolNuclear receptor subfamily 1 group I member 2target
DB00783EstradiolSex hormone-binding globulincarrier
DB00783EstradiolEstrogen receptor betatarget
DB00783EstradiolCytochrome P450 1A2enzyme
DB00783EstradiolUDP-glucuronosyltransferase 1-1enzyme
DB00783EstradiolSerum albumincarrier
DB00783EstradiolFatty acid-binding protein, intestinalcarrier
DB00783EstradiolCytochrome P450 3A4enzyme
DB00783EstradiolCytochrome P450 3A5enzyme
DB00783EstradiolCytochrome P450 3A7enzyme
DB00783EstradiolSolute carrier family 22 member 2transporter
DB00783EstradiolSolute carrier family 22 member 1transporter
DB00783EstradiolSolute carrier family 22 member 3transporter
DB00783EstradiolSolute carrier organic anion transporter family member 2B1transporter
DB00783EstradiolSolute carrier organic anion transporter family member 1A2transporter
DB00783EstradiolMultidrug resistance-associated protein 7transporter
DB00783EstradiolSolute carrier family 22 member 11transporter
DB00783EstradiolATP-binding cassette sub-family G member 2transporter
DB00783EstradiolSolute carrier organic anion transporter family member 1B1transporter
DB00783EstradiolP-glycoprotein 1transporter
DB00783EstradiolCytochrome P450 1A1enzyme
DB00783EstradiolCytochrome P450 1B1enzyme
DB00783EstradiolCytochrome P450 2C19enzyme
DB00783EstradiolCytochrome P450 2C8enzyme
DB00783EstradiolCytochrome P450 2C9enzyme
DB00783EstradiolSolute carrier family 22 member 8transporter
DB00783EstradiolSolute carrier organic anion transporter family member 1B3transporter
DB00783EstradiolSolute carrier organic anion transporter family member 1C1transporter
DB00783EstradiolSolute carrier organic anion transporter family member 4A1transporter
DB00783EstradiolNeuronal acetylcholine receptor subunit alpha-4target
DB00783EstradiolNuclear receptor coactivator 2target
DB00783EstradiolG-protein coupled estrogen receptor 1target
DB00783EstradiolATP synthase subunit atarget
DB00783EstradiolBeclin-1target
DB00783EstradiolEstradiol 17-beta-dehydrogenase 2target
DB00783EstradiolEstrogen-related receptor gammatarget
DrugDrug NamePhaseStatusCount
DB00286Conjugated estrogens1Completed1
DB04573Estriol1Recruiting1
DB00396Progesterone2Recruiting1
DB00783Estradiol3Completed3
DB00783Estradiol3Terminated1
DB13956Estradiol valerate3Terminated1
DB04573Estriol3Terminated1
DB14324Apricot kernel oil4Recruiting1
DB00286Conjugated estrogens4Completed1
DB00286Conjugated estrogens4Recruiting1
DB00783Estradiol4Completed1
DB00783Estradiol4Not Yet Recruiting1
DB00783Estradiol4Recruiting1
DB04573Estriol4Completed1
DB12487Promestriene4Completed1
DB00286Conjugated estrogensNot AvailableCompleted1
DB00783EstradiolNot AvailableActive Not Recruiting1
DB00783EstradiolNot AvailableCompleted1