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Total 393357 Results
| Label | Description | ILX | Version | Created CID | Modified Time | ||||||
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| Ethacrynic acid | A compound that inhibits symport of sodium, potassium, and chloride primarily in the ascending limb of Henle, but also in the proximal and distal tubules. This pharmacological action results in excretion of these ions, increased urinary output, and reduction in extracellular fluid. This compound has been classified as a loop or high ceiling diuretic. (PubChem) Pharmacology: Ethacrynic acid is a monosulfonamyl loop or high ceiling diuretic. Ethacrynic acid acts on the ascending limb of the loop of Henle and on the proximal and distal tubules. Urinary output is usually dose dependent and related to the magnitude of fluid accumulation. Water and electrolyte excretion may be increased several times over that observed with thiazide diuretics, since ethacrynic acid inhibits reabsorption of a much greater proportion of filtered sodium than most other diuretic agents. Therefore, ethacrynic acid is effective in many patients who have significant degrees of renal insufficiency. Ethacrynic acid has little or no effect on glomerular filtration or on renal blood flow, except following pronounced reductions in plasma volume when associated with rapid diuresis. Mechanism of action: Ethacrynic acid inhibits symport of sodium, potassium, and chloride primarily in the ascending limb of Henle, but also in the proximal and distal tubules. This pharmacological action results in excretion of these ions, increased urinary output, and reduction in extracellular fluid. Diuretics also lower blood pressure initially by reducing plasma and extracellular fluid volume; cardiac output also decreases, explaining its antihypertensive action. Eventually, cardiac output returns to normal with an accompanying decrease in peripheral resistance. Its mode of action does not involve carbonic anhydrase inhibition. Drug type: Approved. Small Molecule. Drug category: Diuretics. Enzyme Inhibitors | ILX:0103946 | 3 | scicrunch | 06/18/2018 | scicrunch | term | 12/08/2016 | 0 | NeuroLex | NeuroLex |
| Ethambutol | An antitubercular agent that inhibits the transfer of mycolic acids into the cell wall of the tubercle bacillus. It may also inhibit the synthesis of spermidine in mycobacteria. The action is usually bactericidal, and the drug can penetrate human cell membranes to exert its lethal effect. (From Smith and Reynard, Textbook of Pharmacology, 1992, p863) Pharmacology: Ethambutol is an oral chemotherapeutic agent which is specifically effective against actively growing microorganisms of the genus Mycobacterium, including M. tuberculosis. Ethambutol inhibits RNA synthesis and decreases tubercle bacilli replication. Nearly all strains of M. tuberculosis and M. kansasii as well as a number of strains of MAC are sensitive to ethambutol. Mechanism of action: Ethambutol inhibits arabinosyl transferases involved in cell wall biosynthesis. Drug type: Approved. Small Molecule. Drug category: Antitubercular Agents | ILX:0103947 | 3 | scicrunch | 06/18/2018 | scicrunch | term | 12/08/2016 | 0 | NeuroLex | NeuroLex |
| Ethanol | A clear, colorless liquid rapidly absorbed from the gastrointestinal tract and distributed throughout the body. It has bactericidal activity and is used often as a topical disinfectant. It is widely used as a solvent and preservative in pharmaceutical preparations as well as serving as the primary ingredient in alcoholic beverages. (PubChem) Pharmacology: Alcohol produces injury to cells by dehydration and precipitation of the cytoplasm or protoplasm. This accounts for its bacteriocidal and antifungal action. When alcohol is injected in close proximity to nerve tissues, it produces neuritis and nerve degeneration (neurolysis). Ninety to 98% of ethanol that enters the body is completely oxidized. Ethanol is also used as a cosolvent to dissolve many insoluble drugs and to serve as a mild sedative in some medicinal formulations. Mechanism of action: The sedative effects of ethanol are mediated through binding to GABA receptors and glycine receptors (alpha 1 and alpha 2 subunits). In its role as an anti-infective, ethanol acts as an osmolyte or dehydrating agent that disrupts the osmotic balance across cell membranes. Drug type: Approved. Small Molecule. Drug category: Anti-Infective Agents, Local. Central Nervous System Depressants. Disinfectants. Solvents | ILX:0103948 | 3 | scicrunch | 06/18/2018 | scicrunch | term | 12/08/2016 | 0 | NeuroLex | NeuroLex |
| Ethchlorvynol | Ethchlorvynol is a sedative and hypnotic drug. It has been used to treat insomnia, but has been largely superseded and is only offered where an intolerance or allergy to other drugs exists. (Wikipedia) Pharmacology: Ethchlorvynol is a sedative drug and schedule IV (USA) controlled substance. It produces cerebral depression, however the exact mechanism of action is not known. Mechanism of action: Although the exact mechanism of action is unknown, ethchlorvynol appears to depress the central nervous system in a manner similar to that of barbiturates. Barbiturates bind at a distinct binding sites associated with a Cl- ionopore at the GABAA receptor, increasing the duration of time for which the Cl- ionopore is open. The post-synaptic inhibitory effect of GABA in the thalamus is, therefore, prolonged. Drug type: Approved. Illicit. Small Molecule. Drug category: Hypnotics and Sedatives | ILX:0103949 | 3 | scicrunch | 06/18/2018 | scicrunch | term | 12/08/2016 | 0 | NeuroLex | NeuroLex |
| Ethinamate | Ethinamate is a short-acting sedative-hypnotic medication used to treat insomnia. Regular use leads to tolerance, and it is usually not effective for more than 7 days. Structurally, it does not resemble the barbituates, but it shares many effects with this class of drugs; the depressant effects of ethinamate are, however, generally milder than those of most barbiturates. Pharmacology: Ethinamate is used to treat insomnia (trouble in sleeping). However, it has generally been replaced by other medicines for the treatment of insomnia. If ethinamate is used regularly (for example, every day) to help produce sleep, it is usually not effective for more than 7 days. Structurally, it does not resemble the barbiturates, but it shares many effects with this class of drugs; the depressant effects of ethinamate are, however, generally milder than those of most barbiturates. Continued and inappropriate use of ethinamate can lead to tolerance and physical dependence, with withdrawal symptoms very similar to those of the barbiturates. Mechanism of action: The mechanism of action is not known. However, studies have shown that ethinamate inhibits carbonic anhydrases I and II (J Biol Chem. 1992 Dec 15;267(35):25044-50). This inhibition by ethinamate is not sufficiently strong to implicate carbonic anhydrases I and II in the mechanism of action. Drug type: Approved. Illicit. Small Molecule. Drug category: Hypnotics and Sedatives | ILX:0103950 | 3 | scicrunch | 06/18/2018 | scicrunch | term | 12/08/2016 | 0 | NeuroLex | NeuroLex |
| Ethinyl Estradiol | A semisynthetic alkylated estradiol with a 17-alpha-ethinyl substitution. It has high estrogenic potency when administered orally, and is often used as the estrogenic component in oral contraceptives. (PubChem) Pharmacology: Ethinyl estradiol is a synthetic derivative of the natural estrogen estradiol. It is one of two estrogens currently used in oral contraceptive pills. The other, mestranol, is converted to ethinyl estradiol before it is biologically active. Ethinyl estradiol and norethindrone are used together as an oral contraceptive agent. Mechanism of action: Estrogens diffuse into their target cells and interact with a protein receptor. Target cells include the female reproductive tract, the mammary gland, the hypothalamus, and the pituitary. Estrogens increase the hepatic synthesis of sex hormone binding globulin (SHBG), thyroid-binding globulin (TBG), and other serum proteins and suppress follicle-stimulating hormone (FSH) from the anterior pituitary. The combination of an estrogen with a progestin suppresses the hypothalamic-pituitary system, decreasing the secretion of gonadotropin-releasing hormone (GnRH). Drug type: Approved. Small Molecule. Drug category: Estrogens | ILX:0103951 | 3 | scicrunch | 06/18/2018 | scicrunch | term | 12/08/2016 | 0 | NeuroLex | NeuroLex |
| Ethiodized oil | Ethiodized oil is used by injection as a radio-opaque contrast agent. It is composed of iodine combined with ethyl esters of fatty acids of poppyseed oil, primarily as ethyl monoiodostearate and ethyl diiodostearate. The precise structure is not known. Pharmacology: There has been little detailed investigation of the metabolic fate of ethiodized oil in either man or animals. However, the fate of ethiodized oil following Iymphangiography in dogs has been reported. Koehler et al. employed I131-tagged ethiodol for lymphangiography in dogs and analyses of individual organs at various time intervals were done. The investigators reported an average of only 25% of the injected medium was retained in the lymphatics at the end of three days. An average of 50% was recovered from the lungs. They found the remainder of injected activity was fairly uniformly distributed throughout the body. Urinary excretion in the form of inorganic iodine was revealed as the chief mode of iodine loss from the system. Mechanism of action: Ethiodized oil is selectively retained in tumor vessels for long periods, and is used for imaging organs such as liver, lung, stomach, and thyroid. Labeled with I-131 or other beta emitters (Y-90 or P-32), ethiodized oil can deliver a high internal radiation dose to certain tumors with minimal effect on healthy tissues. Drug type: Approved. Small Molecule. Drug category: Antineoplastic Agents. Contrast Media | ILX:0103952 | 3 | scicrunch | 06/18/2018 | scicrunch | term | 12/08/2016 | 0 | NeuroLex | NeuroLex |
| Ethionamide | A second-line antitubercular agent that inhibits mycolic acid synthesis. It also may be used for treatment of leprosy. (From Smith and Reynard, Textbook of Pharmacology, 1992, p868) Pharmacology: Ethinamate is bacteriostatic against M. tuberculosis. In a study examining ethionamide resistance, ethionamide administered orally initially decreased the number of culturable Mycobacterium tuberculosis organisms from the lungs of H37Rv infected mice. Drug resistance developed with continued ethionamide monotherapy, but did not occur when mice received ethionamide in combination with streptomycin or isoniazid. Mechanism of action: Ethionamide may be bacteriostatic or bactericidal in action, depending on the concentration of the drug attained at the site of infection and the susceptibility of the infecting organism. Ethionamide, like prothionamide and pyrazinamide, is a nicotinic acid derivative related to isoniazid. It is thought that ethionamide undergoes intracellular modification and acts in a similar fashion to isoniazid. Isoniazid inhibits the synthesis of mycoloic acids, an essential component of the bacterial cell wall. Specifically isoniazid inhibits InhA, the enoyl reductase from Mycobacterium tuberculosis, by forming a covalent adduct with the NAD cofactor. It is the INH-NAD adduct that acts as a slow, tight-binding competitive inhibitor of InhA. Drug type: Approved. Small Molecule. Drug category: Antitubercular Agents. Fatty Acid Synthesis Inhibitors. Leprostatic Agents | ILX:0103953 | 3 | scicrunch | 06/18/2018 | scicrunch | term | 12/08/2016 | 0 | NeuroLex | NeuroLex |
| Ethnic Group | Ethnic group or race of patient. | ILX:0103954 | 4 | scicrunch | 06/18/2018 | scicrunch | term | 12/08/2016 | 0 | NeuroLex | NeuroLex |
| Ethnicity | A group of people with a common cultural heritage that sets them apart from others in a variety of social relationships. (MSH); A social group characterized by a distinctive social and cultural tradition maintained from generation to generation, a common history and origin and a sense of identification with the group; members of the group have distinctive features in their way of life, shared experiences and often a common genetic heritage; these features may be reflected in their experience of health and disease. (NCI); Ethnicity - an arbitrary classification of the social group a person belongs to, and either identifies with or is identified with by others, as a result of a complex of cultural, biological, geographical and other factors such as linguistic, dietary and religion traditions; ancestry, background, allegiance, or association; and physical characteristics traditionally associated with race. Increasingly the concept is used synonymously with race but this use trend has a pragmatic basis rather than scientific. (NCI); The concept of ethnic origin is an attempt to classify people, not according to their current ethnicity, but according to where their ancestors came from. Ethnic origin has become a popular classification in statistics, where the concept of race has been largely discarded. (from Wikipedia) (NCI); a group of people with a common cultural heritage that sets them apart from others in a variety of social relationships. (CSP) | ILX:0103955 | 3 | scicrunch | 06/18/2018 | scicrunch | term | 12/08/2016 | 0 | NeuroLex | NeuroLex |
| Ethnicity assessment | Assessment of an individual's cultural heritage that sets them apart from others in a variety of social relationships. (MSH); Assessment of an individual's social group characterized by a distinctive social and cultural tradition maintained from generation to generation, a common history and origin and a sense of identification with the group; members of the group have distinctive features in their way of life, shared experiences and often a common genetic heritage; these features may be reflected in their experience of health and disease. (NCI); Assessment of an individual's ethnicity - an arbitrary classification of the social group a person belongs to, and either identifies with or is identified with by others, as a result of a complex of cultural, biological, geographical and other factors such as linguistic, dietary and religion traditions; ancestry, background, allegiance, or association; and physical characteristics traditionally associated with race. Increasingly the concept is used synonymously with race but this use trend has a pragmatic basis rather than scientific. (NCI); | ILX:0103956 | 4 | scicrunch | 08/24/2018 | scicrunch | term | 12/08/2016 | 0 | NeuroLex | troy sincomb |
| Ethopropazine | Ethopropazine (also known as profenamine hydrochloride) is a medication derived from phenothiazine. It is primarily used as an antidyskinetic to treat parkinsonism. It is sold under the trade names Parsidol in the United States and Parsidan in Canada. Pharmacology: Ethopropazine, a phenothiazine and antidyskinetic, is used in the treatment of Parkinson's disease. By improving muscle control and reducing stiffness, this drug permits more normal movements of the body as the disease symptoms are reduced. It is also used to control severe reactions to certain medicines such as reserpine, phenothiazines, chlorprothixene, thiothixene, loxapine, and haloperidol. Unlike other NMDA antagonists, ethopropazine because of its anticholinergic action is largely devoid of neurotoxic side effects. Ethopropazine also has a slight antihistaminic and local anesthetic effect. Mechanism of action: Ethopropazine's antiparkinson action can be attributed to its anticholinergic properties. Ethopropazine partially blocks central (striatal) cholinergic receptors, thereby helping to balance cholinergic and dopaminergic activity in the basal ganglia; salivation may be decreased, and smooth muscle may be relaxed. Drug-induced extrapyramidal symptoms and those due to parkinsonism may be relieved, but tardive dyskinesia is not alleviated and may be aggravated by anticholinergic effects. Ethopropazine's local anesthetic effect is due to its antagonism of the NMDA glutamate receptor. Glutamate is recognized as an important transmitter in nociceptive pathways, and the N-methyl-D-aspartate (NMDA) subtype of the glutamate receptor, in particular, has been implicated in the mediation of neuropathic pain. Excessive release of glutamate at NMDA receptors on dorsal horn neurons of the spinal cord results in hyperactivation and hypersensitivity of these receptors (perceived as hyperalgesia), thought to be an integral feature of neuropathic pain. Drug type: Approved. Small Molecule. Drug category: Antidyskinetics. Antiparkinson Agents | ILX:0103957 | 4 | scicrunch | 08/24/2018 | scicrunch | term | 12/08/2016 | 0 | NeuroLex | troy sincomb |
| Ethosuximide | An anticonvulsant especially useful in the treatment of absence seizures unaccompanied by other types of seizures. (PubChem) Pharmacology: Used in the treatment of epilepsy. Ethosuximide suppresses the paroxysmal three cycle per second spike and wave activity associated with lapses of consciousness which is common in absence (petit mal) seizures. The frequency of epileptiform attacks is reduced, apparently by depression of the motor cortex and elevation of the threshold of the central nervous system to convulsive stimuli. Mechanism of action: Binds to T-type voltage sensitive calcium channels. Voltage-sensitive calcium channels (VSCC) mediate the entry of calcium ions into excitable cells and are also involved in a variety of calcium-dependent processes, including muscle contraction, hormone or neurotransmitter release, gene expression, cell motility, cell division and cell death. The isoform alpha-1G gives rise to T-type calcium currents. T-type calcium channels belong to the low-voltage activated (LVA)" group and are strongly blocked by mibefradil. A particularity of this type of channels is an opening at quite negative potentials and a voltage-dependent inactivation. T-type channels serve pacemaking functions in both central neurons and cardiac nodal cells and support calcium signaling in secretory cells and vascular smooth muscle. They may also be involved in the modulation of firing patterns of neurons which is important for information processing as well as in cell growth processes. Drug type: Approved. Small Molecule. Drug category: Anticonvulsants. Succinimides" | ILX:0103958 | 4 | scicrunch | 08/24/2018 | scicrunch | term | 12/08/2016 | 0 | NeuroLex | troy sincomb |
| Ethotoin | Ethotoin is a hydantoin derivative and anticonvulsant. Ethotoin exerts an antiepileptic effect without causing general central nervous system depression. The mechanism of action is probably very similar to that of phenytoin. The latter drug appears to stabilize rather than to raise the normal seizure threshold, and to prevent the spread of seizure activity rather than to abolish the primary focus of seizure discharges. Pharmacology: Ethotoin is a hydantoin derivative and anticonvulsant. Ethotoin exerts an antiepileptic effect without causing general central nervous system depression. The mechanism of action is probably very similar to that of phenytoin. The latter drug appears to stabilize rather than to raise the normal seizure threshold, and to prevent the spread of seizure activity rather than to abolish the primary focus of seizure discharges. Mechanism of action: The mechanism of action is probably very similar to that of phenytoin. The latter drug appears to stabilize rather than to raise the normal seizure threshold, and to prevent the spread of seizure activity rather than to abolish the primary focus of seizure discharges. Ethotoin inhibits nerve impulses in the motor cortex by lowering sodium ion influx, limiting tetanic stimulation. Drug type: Approved. Small Molecule. Drug category: Anticonvulsants | ILX:0103959 | 3 | scicrunch | 06/18/2018 | scicrunch | term | 12/08/2016 | 0 | NeuroLex | NeuroLex |
| Ethoxzolamide | A carbonic anhydrase inhibitor used as diuretic and in glaucoma. It may cause hypokalemia. (PubChem) Pharmacology: Ethoxzolamide, a sulfonamide, inhibits carbonic anhydrase activity in proximal renal tubules to decrease reabsorption of water, sodium, potassium, bicarbonate. It also decreases carbonic anhydrase in the CNS, increasing the seizure threshold. This reduction in carbonic anhydrase also reduces the intraocular pressure in the eye by decreasing aqueous humor. Mechanism of action: Ethoxzolamide binds and inhibits carbonic anhydrase I. Carbonic anhydrase plays an essential role in facilitating the transport of carbon dioxide and protons in the intracellular space, across biological membranes and in the layers of the extracellular space. The inhibition of this enzyme effects the balance of applicable membrane equilibrium systems. Drug type: Approved. Small Molecule. Drug category: Carbonic Anhydrase Inhibitors. Diuretics | ILX:0103960 | 3 | scicrunch | 06/18/2018 | scicrunch | term | 12/08/2016 | 0 | NeuroLex | NeuroLex |
| Ethynodiol Diacetate | A synthetic progestational hormone used alone or in combination with estrogens as an oral contraceptive. (PubChem) Pharmacology: Ethynodiol Diacetate is used as a female contraceptive. Ethynodiol Diacetate is a progestin or a synthetic form of the naturally occurring female sex hormone, progesterone. In a woman's normal menstrual cycle, an egg matures and is released from the ovaries (ovulation). The ovary then produces progesterone, preventing the release of further eggs and priming the lining of the womb for a possible pregnancy. If pregnancy occurs, progesterone levels in the body remain high, maintaining the womb lining. If pregnancy does not occur, progesterone levels in the body fall, resulting in a menstrual period. Ethynodiol Diacetate tricks the body processes into thinking that ovulation has already occurred, by maintaining high levels of the synthetic progesterone. This prevents the release of eggs from the ovaries. Mechanism of action: Binds to the progesterone and estrogen receptors. Target cells include the female reproductive tract, the mammary gland, the hypothalamus, and the pituitary. Once bound to the receptor, progestins like Ethynodiol Diacetate will slow the frequency of release of gonadotropin releasing hormone (GnRH) from the hypothalamus and blunt the pre-ovulatory LH (luteinizing hormone) surge. Drug type: Approved. Small Molecule. Drug category: Contraceptives, Oral, Synthetic | ILX:0103961 | 4 | scicrunch | 08/24/2018 | scicrunch | term | 12/08/2016 | 0 | NeuroLex | troy sincomb |
| Etidronic acid | A diphosphonate which affects calcium metabolism. It inhibits ectopic calcification and slows down bone resorption and bone turnover. (PubChem) Pharmacology: Etidronic acid is a first generation (non-nitrogenous) bisphosphonate in the same family as clodronate and tiludronate. Etidronic acid affects calcium metabolism and inhibits bone resorption and soft tissue calcification. Of the etidronic acid that is resorbed (from oral preparation) or infused (for intravenous drugs), about 50% is excreted unchanged by the kidney. The remainder has a very high affinity for bone tissue, and is rapidly absorbed onto the bone surface. Etidronic acid has been shown to prevent or delay skeletal-related events and decrease bone pain as well as normalize calcium levels in the presence of hypercalcemia. Mechanism of action: Bisphosphonates, when attached to bone tissue, are absorbed by osteoclasts, the bone cells that breaks down bone tissue. Although the mechanism of action of non-nitrogenous bisphosphonates has not been fully elucidated, available data suggest that they bind strongly to hydroxyapatite crystals in the bone matrix, preferentially at the sites of increased bone turnover and inhibit the formation and dissolution of the crystals. Other actions may include direct inhibition of mature osteoclast function, promotion of osteoclast apoptosis, and interference with osteoblast-mediated osteoclast activation. Etidronic acid does not interfere with bone mineralization. In malignancy-related hypercalcemia, etidronic acid decreases serum calcium by inhibiting tumour-induced bone resorption and reducing calcium flow from the resorbing bone into the blood. Etidronic acid also reduces morbidity of osteolytic bone metastases by inhibiting tumour-induced bone resorption. Etidronic acid may promote osteoclast apoptosis by competing with adenosine triphosphate (ATP) in the cellular energy metabolism. The osteoclast initiates apoptosis and dies, leading to an overall decrease in the breakdown of bone. Drug type: Approved. Small Molecule. Drug category: Antihypocalcemic Agents. Antineoplastic Agents. Bisphosphonates. Bone Density Conservation Agents. Osteoporosis Prophylactic | ILX:0103962 | 3 | scicrunch | 06/18/2018 | scicrunch | term | 12/08/2016 | 0 | NeuroLex | NeuroLex |
| Etodolac | A nonsteroidal anti-inflammatory agent with potent analgesic and antiarthritic properties. It has been shown to be effective in the treatment of osteoarthritis; rheumatoid arthritis; ankylosing spondylitis; and in the alleviation of postoperative pain (pain, postoperative). (PubChem) Pharmacology: Etodolac, an antiinflammatory agent with analgesic and antipyretic properties, is used to treat osteoarthritis and control acute pain. Mechanism of action: The antiinflammatory effects of etodolac may result from the inhibition of the enzyme cycooxygenase and the subsequent peripheral inhibition of prostaglandin synthesis. As prostaglandins sensitize pain receptors, their inhibition accounts for the peripheral analgesic effects of etodolac. Antipyresis may occur by central action on the hypothalamus, resulting in peripheral dilation, increased cutaneous blood flow, and subsequent heat loss. Drug type: Approved. Investigational. Small Molecule. Drug category: Anti-Inflammatory Agents, Non-Steroidal. Cyclooxygenase Inhibitors. Nonsteroidal Antiinflammatory Agents (NSAIDs) | ILX:0103963 | 3 | scicrunch | 06/18/2018 | scicrunch | term | 12/08/2016 | 0 | NeuroLex | NeuroLex |
| Etomidate | Imidazole derivative anesthetic and hypnotic with little effect on blood gases, ventilation, or the cardiovascular system. It has been proposed as an induction anesthetic. (PubChem) Pharmacology: Etomidate is a non-barbiturate hypnotic that acts at the level of the reticular-activating system to produce anesthesia. Etomidate is an imidazole compound that appears to depress CNS function via GABA. Duration of action is intermediate between thiopental and methohexital, and recovery from a single dose is rapid with little residual depression. Like the barbiturates and propofol, etomidate is does not induce analgesia. Etomidate induces unconsciousness within one circulation time. Recovery is rapid as a result of extensive redistribution and rapid metabolism. Mechanism of action: Etomidate binds at a distinct binding site associated with a Cl- ionopore at the GABAA receptor, increasing the duration of time for which the Cl- ionopore is open. The post-synaptic inhibitory effect of GABA in the thalamus is, therefore, prolonged. Drug type: Approved. Small Molecule. Drug category: Anesthetics, Intravenous. Hypnotics and Sedatives | ILX:0103964 | 3 | scicrunch | 06/18/2018 | scicrunch | term | 12/08/2016 | 0 | NeuroLex | NeuroLex |
| Etonogestrel | Etonogestrel is a molecule used in hormonal contraceptives, most notably the subdermal implant Implanon. (Wikipedia) Pharmacology: Etonogestrel is used as a female contraceptive. Etonogestrel is a progestin or a synthetic form of the naturally occurring female sex hormone, progesterone. In a woman's normal menstrual cycle, an egg matures and is released from the ovaries (ovulation). The ovary then produces progesterone, preventing the release of further eggs and priming the lining of the womb for a possible pregnancy. If pregnancy occurs, progesterone levels in the body remain high, maintaining the womb lining. If pregnancy does not occur, progesterone levels in the body fall, resulting in a menstrual period. Etonogestrel tricks the body processes into thinking that ovulation has already occurred, by maintaining high levels of the synthetic progesterone. This prevents the release of eggs from the ovaries. Mechanism of action: Etonogestrel binds to the progesterone and estrogen receptors. Target cells include the female reproductive tract, the mammary gland, the hypothalamus, and the pituitary. Once bound to the receptor, progestins like etonogestrel will slow the frequency of release of gonadotropin releasing hormone (GnRH) from the hypothalamus and blunt the pre-ovulatory LH (luteinizing hormone) surge. Drug type: Approved. Investigational. Small Molecule. Drug category: Contraceptive Agents, Female. Contraceptives | ILX:0103965 | 4 | scicrunch | 08/24/2018 | scicrunch | term | 12/08/2016 | 0 | NeuroLex | troy sincomb |
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