ru-486

Mifepristone is a synthetic steroid compound used as a pharmaceutical. It is used as an abortifacient in the first two months of pregnancy, and in smaller doses as an emergency contraceptive. It can also be used as a treatment for obstetric bleeding.[1] During early trials, it was known as RU-486, its designation at the Roussel Uclaf company, which designed the drug. The drug was initially made available in France, and other countries then followed—often amid controversy. In France and countries other than the United States it is marketed and distributed by Exelgyn Laboratories under the tradename Mifegyne. In the United States it is sold by Danco Laboratories under the tradename Mifeprex. (The drug is still commonly referred to as "RU-486".)
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La mifépristone ou RU 486 est un stéroïde synthétique. Elle est utilisée chez la femme comme abortif, pour l'avortement chimique du début de la grossesse (nom commercial courant : Mifégyne©).
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Mifepriston ist der Wirkstoff in der so genannten Abtreibungspille RU-486. Mifepriston ist ein Progesteron-Rezeptor-Antagonist. Es hemmt die Wirkung des Gestagens Progesteron dadurch, dass er eine fünfmal höhere Affinität für die Rezeptoren des Hormons hat. Des weiteren blockiert es die Rezeptoren für Glukokortikoide durch eine dreifach höhere Affinität gegenüber Dexamethason.
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Il mifepristone è uno steroide sintetico utilizzato come farmaco abortivo per l'aborto chimico nei primi due mesi della gravidanza. Prodotto sotto forma di pillola abortiva viene commercializzato in Francia con il nome Mifégyne e negli Stati Uniti, dove viene prodotto dalla Danco Laboratories, come Mifeprex. Durante le prime sperimentazioni fu usata la sigla RU-38486, poi abbreviata in RU-486, dall'azienda produttrice, la Roussel Uclaf, da qui il suo secondo nome.
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Мифепристон — синтетическое стероидное антипрогестагенное средство, не обладающее гестагенной активностью. Другие названия: Мифегин, РУ-486, Пенкрофтон, Мифолиан, Мифепрекс.Мифепристон используется для прерывания нежелательной беременности на ранних сроках без хирургического вмешательства — см. Медикаментозный аборт.
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