JPWO2020071546A1 - 非水系溶媒により安定化された製剤 - Google Patents
非水系溶媒により安定化された製剤 Download PDFInfo
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Abstract
Description
すなわち、本発明は下記〔1〕〜〔4〕を提供する。
〔2〕 さらに、DMSOを含有する上記〔1〕に記載の外用剤。
〔3〕 バクロフェン塩酸塩を、有機溶媒又は無機溶媒に溶解する、バクロフェン製剤の安定化方法。
〔4〕 バクロフェン塩酸塩、DMSO、C16−20脂肪酸を含有する外用剤。
〔5〕 バクロフェン塩酸塩を含有する外用剤組成物。
〔6〕 更に、DMSOを含有する上記〔5〕に記載の外用剤組成物。
〔7〕 更に、一種以上のC16−20脂肪酸を含有する上記〔5〕又は〔6〕に記載の外用剤組成物。
〔8〕 前記C16−20脂肪酸が、オレイン酸、イソステアリン酸又はその混合物である、上記〔7〕に記載の外用剤組成物。
〔9〕 支持体と
支持体の片面に設けられた粘着剤層と、を備えた、貼付剤であって、前記粘着剤層が、上記〔5〕〜〔8〕のいずれかに記載の外用剤組成物を含む、貼付剤。
〔10〕 (a)溶媒不透性の第1のシートと、
(b)前記第1のシートの上面に貼り付けられ、前記第1のシートとの間に非シール領域と該非シール領域を囲むシール領域を形成するとともに、前記非シール領域の外周縁に沿って環状に伸びる切断部が形成された溶媒不透性の第2のシートと、
(c)前記非シール領域において前記第1のシートと前記第2のシートの間に配置され,前記切断部の内側で前記第2のシートに固定され、上記〔5〕〜〔8〕のいずれかに記載の外用剤組成物を担持した経皮吸収剤担持部材と、
(d)前記第2のシートの上面に剥離可能に貼り付けられた粘着性の第3のシートと、
を備えた、貼付剤。
〔11〕 バクロフェンまたはその塩を含有する製剤の安定化方法であって、バクロフェン塩酸塩を有機溶媒及び/又は無機溶媒に溶解させることを特徴とする、安定化方法。
〔12〕 前記有機溶媒が、DMSOを含む、上記〔11〕に記載の安定化方法。
本発明の外用剤組成物は、バクロフェン(4−アミノ−3−(4−クロロフェニル)ブタン酸)又はその塩、好ましくはバクロフェン塩酸塩を含む。バクロフェンは、ラセミ体であってもよく、光学異性体(R−バクロフェンまたはS−バクロフェン)であってもよい。バクロフェン塩酸塩は、通常、有機溶媒及び/又は無機溶媒に溶解されている。前記有機溶媒には、例えば、カプリン酸、ラウリン酸、ミリスチン酸、パルミチン酸、パルミトレイン酸、マルガリン酸、ステアリン酸、イソステアリン酸、オレイン酸、バクセン酸、リノール酸、アラキジン酸、アラキドン酸等の脂肪酸;レブリン酸等のケト酸;カプリルアルコール、セチルアルコール、ステアリルアルコール、オレイルアルコール等の1価アルコール;プロピレングリコール、ブチレングリコール、ポリエチレングリコール等の2価アルコール;グリセリン等の3価アルコール;セバシン酸ジエチル、ミリスチン酸イソピル、アジピン酸ジイソプロピル、パルミチン酸ミリスチル、ステアリン酸ステアリル等の脂肪酸エステル;プロピレングリコールジアセテート等のジエステル;ジエチレングリコールモノエチルエーテル;ジメチルスルホキシド等が含まれる。前記無機溶媒としては、水が例示できる。それらの溶媒は、1種又は2種以上を組み合わせて用いることができる。
(a)溶媒不透性の第1のシートと、
(b)前記第1のシートの上面に貼り付けられ、前記第1のシートとの間に非シール領域と該非シール領域を囲むシール領域を形成するとともに、前記非シール領域の外周縁に沿って環状に伸びる切断部が形成された溶媒不透性の第2のシートと、
(c)前記非シール領域において前記第1のシートと前記第2のシートの間に配置され,前記切断部の内側で前記第2のシートに固定され、本発明の外用剤組成物を担持した経皮吸収剤担持部材と、
(d)前記第2のシートの上面に剥離可能に貼り付けられた粘着性の第3のシートと、
を備えた構造を有しうる。
水、プロピレングリコール(PG)、グリセリン、酢酸、乳酸、10%塩酸、10%水酸化ナトリウム水溶液にバクロフェンを溶解し、0.25重量%溶液を調製した。各溶液10gを50℃で保存し、1週間後及び2週間後のバクロフェン及びその環化体(分子内縮合生成物)の含量を測定した。
一方、プロピレングリコール及び酢酸の溶液では、バクロフェンの含量は大きく低下した。また、プロピレングリコールの溶液では環化体以外の分解物も多量に生成していた。
塩酸又は乳酸を可溶化剤として用いてバクロフェンの各溶液を調製し、水、プロピレングリコール、NMP(N−メチルピロリドン)、及びグリセリンに溶解し、各溶液の50℃保存におけるバクロフェンの安定性を評価した。各溶液の調製方法は以下の通りである。
[塩酸を可溶化剤とする溶液]
バクロフェンを、10%塩酸に、バクロフェン:10%塩酸=1:2(重量比)の割合で溶解し、バクロフェンの塩酸溶液を調製した。次いで、バクロフェンの塩酸溶液0.1gを各溶媒(水を除く)10gに溶解して試料とした。
[乳酸を可溶化剤とする溶液]
バクロフェンを、乳酸に、バクロフェン:乳酸=1:3(重量比)の割合で溶解し、バクロフェンの乳酸溶液を調製した。次いで、バクロフェンの乳酸溶液0.1gを各溶媒10gに溶解して試料とした。
[バクロフェン塩酸塩溶液の安定性の評価]
バクロフェン(10.0g)を、10%塩酸(20g)に溶解した後、溶媒を凍結させ、凍結乾燥機で一晩乾燥してバクロフェン塩酸塩を得た。
得られたバクロフェン塩酸塩を、水、NMP(N−メチルピロリドン)、プロピレングリコール、グリセリンに溶解して、0.25重量%の溶液を調製した。各溶液を50℃に保存し、1週間後及び2週間後のバクロフェン及びその環化体の含量を測定して、バクロフェンの安定性を評価した。
[バクロフェン含有経皮製剤の安定性及び皮膚透過性の評価]
表5〜表7に示す割合(重量%)で各成分を秤取混合し、常法に従い、バクロフェン含有経皮製剤を製造した。各製剤を50℃条件下で保存し、1週間後及び2週間後のバクロフェン及びその環化体の含量を測定して、バクロフェンの安定性を評価した。また、ラット皮膚を用いたin vitro試験によって各製剤におけるバクロフェンの皮膚透過性を評価した。
[DMSOを含むバクロフェン含有経皮製剤の安定性及び皮膚透過性の評価]
表8に示す割合(重量%)で各成分を秤取混合し、常法に従い、バクロフェン含有経皮製剤を製造した。各製剤を50℃条件下で保存し、1週間後及び2週間後のバクロフェン及びその環化体の含量を測定して、バクロフェンの安定性を評価した。また、ブタ皮膚を用いたin vitro試験によって各製剤におけるバクロフェンの皮膚透過性を評価した。
[DMSO及びC16−20脂肪酸を含むバクロフェン含有経皮製剤の安定性及び皮膚透過性の評価]
表9に示す割合(重量%)で各成分を秤取混合し、常法に従い、バクロフェン含有経皮製剤を製造した。各製剤を80℃条件下で保存し、2日後のバクロフェン及びその環化体の含量を測定して、バクロフェンの安定性を評価した。また、ブタ皮膚を用いたin vitro試験によって各製剤におけるバクロフェンの皮膚透過性を評価した。
[バクロフェン含有経皮製剤の長期安定性の評価]
表9のJ−8で示されるバクロフェン含有経皮製剤を製造し、50℃、40℃及び25℃条件下で3月保存し、1月後及び3月後のバクロフェン及びその環化体の含量を測定して、バクロフェンの長期安定性を評価した。
[機械製造したバクロフェン含有経皮製剤の長期安定性の評価]
国際公開第2016/136732号に記載された経皮吸収剤デリバリーデバイスの製造方法を用いて、機械製造したバクロフェン含有経皮製剤の長期安定性を評価した。本実施例では、表9のJ−8で示されるバクロフェン含有経皮製剤(経皮吸収剤)を不織布(経皮吸収剤担持部材)に染み込ませ、2枚のアルミラミネートフィルム(カバーシート及びベースシート)の間に配置した。得られた経皮製剤をアルミの袋に封入して保存して、初期(0月)、1月後、2月後及び3月後のバクロフェン及びその環化体の含量を測定して、バクロフェンの長期安定性を評価した。
[貼付剤の製造]
表12及び表13に示す処方(重量%)で貼付剤を製造した。製造は、酢酸エチル及びヘプタンを溶媒として用い、溶媒法により常法に従って行った。
Claims (8)
- バクロフェン塩酸塩を含有する外用剤組成物。
- 更に、DMSOを含有する請求項1に記載の外用剤組成物。
- 更に、一種以上のC16−20脂肪酸を含有する請求項1又は2に記載の外用剤組成物。
- 前記C16−20脂肪酸が、オレイン酸、イソステアリン酸又はその混合物である、請求項3に記載の外用剤組成物。
- 支持体と
支持体の片面に設けられた粘着剤層と、を備えた、貼付剤であって、前記粘着剤層が、請求項1〜4のいずれか一項に記載の外用剤組成物を含む、貼付剤。 - (a)溶媒不透性の第1のシートと、
(b)前記第1のシートの上面に貼り付けられ、前記第1のシートとの間に非シール領域と該非シール領域を囲むシール領域を形成するとともに、前記非シール領域の外周縁に沿って環状に伸びる切断部が形成された溶媒不透性の第2のシートと、
(c)前記非シール領域において前記第1のシートと前記第2のシートの間に配置され,前記切断部の内側で前記第2のシートに固定され、請求項1〜4のいずれか一項に記載の外用剤組成物を担持した経皮吸収剤担持部材と、
(d)前記第2のシートの上面に剥離可能に貼り付けられた粘着性の第3のシートと、
を備えた、貼付剤。 - バクロフェンまたはその塩を含有する製剤の安定化方法であって、バクロフェン塩酸塩を有機溶媒及び/又は無機溶媒に溶解させることを特徴とする、安定化方法。
- 前記有機溶媒が、DMSOを含む、請求項7に記載の安定化方法。
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PCT/JP2019/039349 WO2020071546A1 (ja) | 2018-10-04 | 2019-10-04 | 非水系溶媒により安定化された製剤 |
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US20050090554A1 (en) * | 2003-09-12 | 2005-04-28 | John Devane | Treatment of gastroparesis and nonulcer dyspepsia with GABAB agonists |
WO2011143526A2 (en) * | 2010-05-13 | 2011-11-17 | Afgin Pharma, Llc | Topical peripheral neuro-affective (tpna) therapy |
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WO2013191187A1 (ja) * | 2012-06-20 | 2013-12-27 | 株式会社メドレックス | 薬剤と有機溶媒と親油性膏体基剤と粉体を配合した貼付製剤組成物 |
ES2788573T3 (es) * | 2012-09-28 | 2020-10-21 | Nitto Denko Corp | Preparación de parche que contiene óxido de amina |
US20140170593A1 (en) * | 2012-12-18 | 2014-06-19 | Oltuse, Llc | Patch for non-invasive pain relief |
EP3360545A4 (en) | 2015-11-12 | 2019-05-22 | MEDRx Co., Ltd. | DEVICE FOR ADMINISTERING A PERCUTANEAN ABSORBENT AND PRODUCTION METHOD THEREFOR |
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US20100226972A1 (en) * | 2009-03-06 | 2010-09-09 | Lutz George W | Transdermal pain gel |
US20130123320A1 (en) * | 2011-11-14 | 2013-05-16 | Alex Chervinsky | Topical composition for pain relief |
WO2016136732A1 (ja) * | 2015-02-24 | 2016-09-01 | 株式会社 メドレックス | 経皮吸収剤デリバリーデバイス及びその製造方法 |
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