JP2016507468A - 亜鉛を含有するジフルプレドナートエマルション組成物 - Google Patents
亜鉛を含有するジフルプレドナートエマルション組成物 Download PDFInfo
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- JP2016507468A JP2016507468A JP2015540766A JP2015540766A JP2016507468A JP 2016507468 A JP2016507468 A JP 2016507468A JP 2015540766 A JP2015540766 A JP 2015540766A JP 2015540766 A JP2015540766 A JP 2015540766A JP 2016507468 A JP2016507468 A JP 2016507468A
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- JP
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- Prior art keywords
- zinc
- emulsion
- composition
- test
- difluprednate
- Prior art date
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- Granted
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- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 63
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- A61K31/57—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane or progesterone
- A61K31/573—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane or progesterone substituted in position 21, e.g. cortisone, dexamethasone, prednisone or aldosterone
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- A61K47/26—Carbohydrates, e.g. sugar alcohols, amino sugars, nucleic acids, mono-, di- or oligo-saccharides; Derivatives thereof, e.g. polysorbates, sorbitan fatty acid esters or glycyrrhizin
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Landscapes
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Abstract
Description
ジフルプレドナートは強力なステロイド性抗炎症薬であり、米国特許第6114319号には、点眼剤、点鼻剤又は点耳剤として使用することができるジフルプレドナートを含有するエマルション組成物が記載されている。ジフルプレドナートを含有するエマルション組成物は、患部への移行性が良好であり、投与時の違和感、異物感が極めて少ない点眼液として使用できるという利点を有する。
[1] ジフルプレドナート及び亜鉛を含有するエマルション組成物。
[2] 亜鉛が、亜鉛塩又は亜鉛錯体である前記[1]記載のエマルション組成物。
[3] 亜鉛塩又は亜鉛錯体が、硫酸亜鉛及び塩化亜鉛からなる群より選択される少なくとも1種である前記[2]記載のエマルション組成物。
[4] 亜鉛塩又は亜鉛錯体の亜鉛イオンとしての濃度が0.00001 (w/v)%以上、0.1 (w/v)%以下である前記[2]又は[3]に記載のエマルション組成物。
[5] さらにソルビン酸及びホウ酸を含有する前記[3]記載のエマルション組成物。
[6] 眼科用組成物である前記[1]〜[5]のいずれか1つに記載のエマルション組成物。
[7] ジフルプレドナートを含有するエマルション組成物の安定化方法であって、ジフルプレドナート及び亜鉛を含有するエマルション組成物を調製することを特徴とする方法。
[8] 亜鉛が、亜鉛塩又は亜鉛錯体である前記[7]記載の方法。
[9] 亜鉛塩又は亜鉛錯体が、硫酸亜鉛及び塩化亜鉛からなる群より選択される少なくとも1種である前記[8]記載の方法。
[10] 亜鉛塩又は亜鉛錯体を、亜鉛イオンとして0.00001 (w/v)%以上、0.1 (w/v)%以下の濃度でエマルション組成物に配合する、前記[8]又は[9]に記載の方法。
[11] エマルション組成物に、さらにソルビン酸及びホウ酸を配合する、前記[9]記載の方法。
[12] エマルション組成物が眼科用組成物である前記[7]〜[11]のいずれか1つに記載の方法。
本発明は、ジフルプレドナート及び亜鉛を含有するエマルション組成物を提供する。より詳細には、本発明は、ジフルプレドナート、油、水、乳化剤及び亜鉛を含有する水中油型エマルション組成物(以下、本発明の組成物という)を提供する。本発明の組成物は、さらにソルビン酸及びホウ酸を含有してもよい。
細菌の培養条件:30〜35℃で約3日
真菌の培養条件:20〜25℃で約5日
温度:25.0℃
照度:3.0 klx
積算照度:600 klx・h
1)調製方法
ヒマシ油50 gをビーカーに量り、加温した(水浴温度:85〜95℃)。ここにジフルプレドナート0.5 gを加えて攪拌し、ジフルプレドナートを溶解させA液とした。別に、ビーカーにポリソルベート80 40 g及び濃グリセリン22 gを量り、水350 mLを加えた。この液を約65〜75℃に加温し、攪拌しながら、酢酸ナトリウム水和物0.5 gを加えて、混合物を攪拌して、B液とした。約70℃に加温したB液をホモミキサー(T.K.ロボミックス, プライミクス)を用いて攪拌(3000 rpm)した。攪拌中のB液に、約90℃に加温したA液を少しずつ滴下しながら加えた。A液の全量を投入した後、ホモミキサーの回転数を8000 rpmにし、約70℃で1時間攪拌した。この液を室温に戻し、1 mol/L水酸化ナトリウム水溶液を適量加えてpHを約5.5に調整した。この液に精製水を加え、全量500 mLにし、粗乳化物とした。次に、マイクロフルイダイザー(M-110EH, Microfluidics Corp.)を用いて、粗乳化物を微粒子化し、約400 mLのエマルション原液を得た(圧力約1500 kgf/cm2, 温度35〜45℃, 通液20回)。調製量は必要に応じて適宜変更した。
試験菌として細菌であるStaphylococcus aureus (ATCC 6538)、Escherichia coli (ATCC 8739)及びPseudomonas aeruginosa (ATCC 9027)を用いた。また、真菌であるCandida albicans (ATCC 10231)及びAspergillus brasiliensis(niger) (ATCC 16404)を用いた。それぞれの試験菌をカンテン斜面培地の表面に接種して前培養した。細菌3種は、ソイビーン・カゼイン・ダイジェストカンテン培地を用い、30〜35℃で18〜24時間培養した。Candida albicansは、サブロー・ブドウ糖カンテン培地を用い、20〜25℃で40〜48時間培養した。Aspergillus brasiliensis(niger)は、サブロー・ブドウ糖カンテン培地を用い、20〜25℃で一週間又は十分な胞子が形成されるまで培養を行った。
第十六改正日本薬局方(JP)、保存効力試験法 カテゴリーI製剤の判定基準に従った。即ち、混合溶液中の細菌の生菌数が、14日後に接種菌数の0.1 %以下に減少し、かつ28日後に14日後のレベルと同等若しくはそれ以下にとどまっていた場合、「保存効力がある」とした。混合溶液中の真菌の生菌数が14日後と28日後で接種菌数と同レベル若しくはそれ以下にとどまっていた場合、「保存効力がある」とした。全ての試験菌株について保存効力がある場合、「適合」と判定した。
表1に示すように、エマルションに抗菌性金属(亜鉛、銀、銅)を加えることによって、優れた保存効力(日本薬局方適合)を有するエマルションが調製できた。通常水性液剤(点眼液)に用いられるベンザルコニウム塩化物又はクロルヘキシジングルコン酸塩を加えたエマルションでは、満足な保存効力は得られなかった。
1)調製方法
各エマルションは、試験例1と同様の方法で調製した。各懸濁液は次の方法で調製した。ビーカーにポリソルベート80 40 g及び濃グリセリン22 gを量り、水400 mLを加えた。溶解後、酢酸ナトリウム水和物0.5 g及びジフルプレドナート0.5 gを加え、ジフルプレドナートが均一に分散するまで攪拌し、pHを約5.5に調整した。この液に精製水を加え規定量とし、懸濁原液を得た。懸濁原液50 mLをビーカーに取り、最終濃度が所定の濃度になるように各金属化合物を加え、この溶液をpH約5.5に調整し、全量が100 mLになるように精製水を加えて、目的の懸濁液を調製した。
調製した検体を無色透明のガラスアンプルに10 mL充填し、光安定性試験装置で保管した。保管後、適宜取り出し、光に対するジフルプレドナートのエマルション及び懸濁液の外観を観察した。観察は、検査灯又は蛍光灯下で実施した。
温度:25.0℃
照度:3.0 klx
積算照度:600 klx・h
調製した検体を無色透明のガラスアンプルに10 mL充填し、40℃に設定された恒温恒湿器で遮光下にて4ヶ月間又は6ヶ月間保管した。保管後、適宜取り出し、熱に対するジフルプレドナートのエマルション及び懸濁液の外観を観察した。観察は、検査灯又は蛍光灯下で実施した。
表2に示すように、亜鉛イオンを含有するエマルションは、光安定性試験及び熱安定性試験の両方において、開始時と比較して外観に変化がなく、他の金属イオンを含有するエマルションよりも安定であった。変化がないとは、外観が白色の乳濁液であり、JIS色名帳(JIS Z 8102準拠、日本規格協会、第2版、第2刷)で規定されている無彩色の白(N, 9.5)と同等の色であることを指す。
1)調製方法
各エマルションは、試験例1と同様の方法で調製した。
保存効力試験は、試験例1と同様の方法で実施した。
試験例1と同様に、第十六改正日本薬局方、保存効力試験法、カテゴリーI製剤の判定基準で判定を行った。
表4に示すように、0.001 (w/v)%の亜鉛イオンを含有するエマルション(実施例7及び9)、及び0.1 (w/v)%の亜鉛イオンを含有するエマルション(実施例8)は、優れた保存効力(日本薬局方適合)を有する。
1)調製方法
実施例10のエマルションは、試験例1と同様の方法で調製した。
保存効力試験は、試験例1と同様の方法で実施した。
ヨーロッパ薬局方7.0、保存効力試験(EUROPEAN PHARMACOPOEIA 7.0, Efficacy of antimicrobial preservation)の判定基準の1つであるB基準に従った。即ち、混合溶液中の細菌の生菌数が、菌接種24時間後に1 log以上減少し、7日後に3 log以上減少し、かつ28日後に7日後のレベルと同等若しくはそれ以下にとどまっていた場合、「保存効力がある」とした。混合溶液中の真菌の生菌数が菌接種14日後に1 log以上減少し、かつ28日後に14日後のレベルと同等若しくはそれ以下にとどまっていた場合、「保存効力がある」とした。全ての試験菌株について保存効力がある場合、「EP-B適合」と判定した。同時に、第十六改正日本薬局方に従い、JP基準(試験例1参照)での判定も行った。
表5に示すように、0.1 (w/v)%の亜鉛イオンに加え、0.1 (w/v)%のソルビン酸及び0.1 (w/v)%のホウ酸を含有するエマルション(実施例10)は、保存効力の即効性が向上し、その保存効力はEP-B基準に適合した。
1)調製方法
実施例11、実施例12、比較例10及び比較例11の各エマルションは、試験例1と同様の方法で調製した。
保存効力試験は試験例1と、光安定性試験及び熱安定性試験は試験例2と同様の方法で実施した。
試験例1と同様に、第十六改正日本薬局方、保存効力試験、カテゴリーI製剤の判定基準で判定を行った。
表6に示すように、0.001 (w/v)%の亜鉛イオンを含有し、pH 5.5及びpH7.0に調整されたエマルション(実施例11及び12)は、優れた保存効力(日本薬局方適合)を示した。0.2 (w/v)%のソルビン酸を含有し、pH 5.5に調整されたエマルション(比較例10)は優れた保存効力を示したが、pH 7.0に調整されたエマルション(比較例11)は、満足な保存効力は得られなかった。ソルビン酸を含有するエマルションの保存効力はpHに依存するが、亜鉛イオンを含有するエマルションはpHに依存せず、優れた保存効力を示した。
Claims (12)
- ジフルプレドナート及び亜鉛を含有するエマルション組成物。
- 亜鉛が、亜鉛塩又は亜鉛錯体である請求項1記載のエマルション組成物。
- 亜鉛塩又は亜鉛錯体が、硫酸亜鉛及び塩化亜鉛からなる群より選択される少なくとも1種である請求項2記載のエマルション組成物。
- 亜鉛塩又は亜鉛錯体の亜鉛イオンとしての濃度が0.00001 (w/v)%以上、0.1 (w/v)%以下である請求項2又は3に記載のエマルション組成物。
- さらにソルビン酸及びホウ酸を含有する請求項3に記載のエマルション組成物。
- 眼科用組成物である請求項1〜5のいずれか1項に記載のエマルション組成物。
- ジフルプレドナートを含有するエマルション組成物の安定化方法であって、ジフルプレドナート及び亜鉛を含有するエマルション組成物を調製することを特徴とする方法。
- 亜鉛が、亜鉛塩又は亜鉛錯体である請求項7記載の方法。
- 亜鉛塩又は亜鉛錯体が、硫酸亜鉛及び塩化亜鉛からなる群より選択される少なくとも1種である請求項8記載の方法。
- 亜鉛塩又は亜鉛錯体を、亜鉛イオンとして0.00001 (w/v)%以上、0.1 (w/v)%以下の濃度でエマルション組成物に配合する、請求項8又は9に記載の方法。
- エマルション組成物に、さらにソルビン酸及びホウ酸を配合する、請求項9記載の方法。
- エマルション組成物が眼科用組成物である請求項7〜11のいずれか1項に記載の方法。
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PCT/JP2014/054097 WO2014126266A1 (en) | 2013-02-15 | 2014-02-14 | Difluprednate emulsion composition containing zinc |
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JP (1) | JP6226997B2 (ja) |
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IL101241A (en) * | 1992-03-16 | 1997-11-20 | Yissum Res Dev Co | Pharmaceutical or cosmetic composition comprising stabilized oil-in-water type emulsion as carrier |
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US20090263345A1 (en) * | 2008-01-28 | 2009-10-22 | Foresight Biotherapeutics, Inc. | Otic compositions for the treatment of infections of the internal and external ear in mammals |
US9744237B2 (en) * | 2009-01-29 | 2017-08-29 | Kambiz Thomas Moazed | Method and system for effecting changes in pigmented tissue |
TW201105363A (en) * | 2009-07-14 | 2011-02-16 | Univ Yamagata | Eye drop for macular edema treatment |
CN103124541B (zh) * | 2010-07-15 | 2015-09-30 | 艾诺维亚股份有限公司 | 眼药物递送 |
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2014
- 2014-02-14 US US14/766,923 patent/US20150374820A1/en not_active Abandoned
- 2014-02-14 JP JP2015540766A patent/JP6226997B2/ja not_active Expired - Fee Related
- 2014-02-14 WO PCT/JP2014/054097 patent/WO2014126266A1/en active Application Filing
- 2014-02-14 CN CN201480008850.4A patent/CN105120875B/zh active Active
- 2014-02-14 KR KR1020157025249A patent/KR20150119315A/ko not_active Application Discontinuation
- 2014-02-14 RU RU2015139129A patent/RU2675813C2/ru active
- 2014-02-14 EP EP14751940.9A patent/EP2956144B1/en not_active Not-in-force
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WO1998030221A1 (fr) * | 1997-01-10 | 1998-07-16 | Wakamoto Pharmaceutical Co., Ltd. | Composition de type emulsion huile/eau a usage ophtalmique et contenant du difluprednate |
JPH1129483A (ja) * | 1997-05-14 | 1999-02-02 | Senju Pharmaceut Co Ltd | ジフルプレドナート含有組成物 |
JP2003104870A (ja) * | 2001-09-28 | 2003-04-09 | Rohto Pharmaceut Co Ltd | 水性組成物 |
JP2007530685A (ja) * | 2004-03-29 | 2007-11-01 | ボーシュ アンド ローム インコーポレイティド | 亜鉛含有保存剤組成物及びその使用方法 |
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JP2010504358A (ja) * | 2006-09-21 | 2010-02-12 | アルコン リサーチ, リミテッド | 自己保存型水性医薬組成物 |
JP2010504990A (ja) * | 2006-09-28 | 2010-02-18 | アルコン リサーチ, リミテッド | 自己保存性水性医薬品組成物 |
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EP2956144A1 (en) | 2015-12-23 |
CN105120875B (zh) | 2018-01-09 |
EP2956144B1 (en) | 2017-11-22 |
CN105120875A (zh) | 2015-12-02 |
RU2675813C2 (ru) | 2018-12-25 |
RU2015139129A (ru) | 2017-03-21 |
JP6226997B2 (ja) | 2017-11-08 |
WO2014126266A1 (en) | 2014-08-21 |
US20150374820A1 (en) | 2015-12-31 |
EP2956144A4 (en) | 2016-08-03 |
KR20150119315A (ko) | 2015-10-23 |
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