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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Niaprazine ： ウィキペディア英語版 Niaprazine Niaprazine (Nopron) is a sedative-hypnotic drug of the phenylpiperazine class. It has been used in the treatment of sleep disturbances since the early 1970s in several European countries, including France, Italy, and Luxembourg. It is commonly used with children and adolescents on account of its favorable safety and tolerability profile and lack of abuse potential. Originally believed to act as an antihistamine and anticholinergic, niaprazine was later discovered to have no significant binding affinity for either the H1 or the mACh receptors (Ki = > 1 μM), and was instead found to act as a potent and selective 5-HT2A and α1-adrenergic receptor antagonist (Ki = 75 nM and 86 nM, respectively). It is virtually inactive at 5-HT1A, 5-HT2B, D2, and β-adrenergic, as well as at SERT and VMAT (Ki = all > 1 μM), but it does have some weak affinity for the α2-adrenergic receptor (Ki = 730 nM),〔 likely acting as an antagonist there as well. Niaprazine has been shown to metabolize to the compound ''p''FPP in a similar manner to how trazodone and nefazodone metabolize to ''m''CPP. It is unclear what role, if any, ''p''FPP plays in the clinical effects of niaprazine.〔 However, from animal studies it is known that ''p''FPP, unlike niaprazine, does not produce sedative effects, and instead exerts a behavioral profile indicative of serotonergic activation.〔 == See also == * Phenylpiperazine 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Niaprazine」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.