JP6045552B2 - 生体利用率が向上した難溶性薬物含有微粒球およびその製造方法 - Google Patents
生体利用率が向上した難溶性薬物含有微粒球およびその製造方法 Download PDFInfo
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- JP6045552B2 JP6045552B2 JP2014231472A JP2014231472A JP6045552B2 JP 6045552 B2 JP6045552 B2 JP 6045552B2 JP 2014231472 A JP2014231472 A JP 2014231472A JP 2014231472 A JP2014231472 A JP 2014231472A JP 6045552 B2 JP6045552 B2 JP 6045552B2
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Classifications
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Description
米国特許出願公開第20030224059号は、水で低い溶解度を有する活性薬学的成分と昇華性キャリア(sublimable carrier)の固体溶液(solid solution)から形成された微細粒子、これを含む薬物伝達ビヒクルおよびその製造方法を開示されている。
したがって、シードなしに比較的に球形の均一な粒子を形成するために、噴霧乾燥時の工程条件を適切に調節するのが必要である。
前記段階b)は、段階a)の混合溶液を噴霧乾燥方法で噴射する段階であって、噴射方法にはノズル式噴霧乾燥機またはアトマイザー式噴霧乾燥機などを利用することができる。
上述した実施例以外の多くの実施例が本発明の特許請求の範囲内に存在する。
HPMC(2910series、Shin−Etsu Chemical,以下同じ。)10gを水90gと混合し攪拌して完全に溶解した10%w/w溶液を製造した。フェノフィブラート2gをエタノール200gと混合し攪拌して完全に溶解した。この2つの溶液をさらに混合して攪拌し、沈澱のない溶液を作った。フェノフィブラートとHPMCの比率は、重量基準として1:5(フェノフィブラート重量:HPMC重量)であった。
上記溶液をBUCHI社ノズル式噴霧乾燥機(Mini spray dryer B−290,Buchi)で注入空気温度90℃、注入量3mL/min条件で噴霧乾燥して、比較的に球形の平均粒子サイズが50μmのフェノフィブラート含有微粒球を得た。
HPMC450gを水2550gと混合し攪拌して完全に溶解した15%w/w溶液を作った。フェノフィブラート90gをエタノール5500gと混合し攪拌して完全に溶解した。この2つの溶液をさらに混合し攪拌して、沈澱のない溶液を作った。フェノフィブラートとHPMCの比率は1:5であった。
結晶質フェノフィブラートを微粒球化させずに、原料そのままを使用した。
フェノフィブラート、HPMCおよび溶媒を実施例2と同一量で使用するが、溶媒をエタノールだけまたは水だけを使用してアトマイザー式噴霧乾燥機を用いてフェノフィブラート含有微粒球を製造しようとしたが、HPMCおよびフェノフィブラートをエタノールだけまたは水だけに共に溶解することができなくて、2つの場合いずれも微粒球製造ができなかった。
実施例1、実施例2、および比較例1で得られた微粒球に対して、下記の条件で溶出試験を実施し、その結果を図1に示した。
−試験方法:大韓薬典第9改定第2法(パドル法)
−器具:LABFINE Dissolution tester(モデル名 DST−810、(株)ラブファイン)
−溶出液:500mLの水
−温度:37±0.5℃
−パドル回転速度:100rpm
各方法で製造された均一な分布を有する難溶性薬物含有微粒球(実施例1および実施例2)は、結晶質難溶性薬物(比較例1)に比べてin vitro溶出実験で優れた溶出様相を示した。
下記の表1に表した組成比で、実施例2と同様な方式で混合して、黄色を帯びる澄んだ混合溶液を製造し、気泡が無くなるように放置した。
下記の表2に表した組成比で、実施例2と同様な方式で混合して、黄色を帯びる澄んだ混合溶液を製造し、気泡が無くなるように放置した。
下記の表3に表した組成比で、実施例2と同様な方式で混合して、黄色を帯びる澄んだ混合溶液を製造し、気泡が無くなるように放置した。
下記の表4に表した組成比で、水とエタノールを混合した混合溶媒にHPMCを入れてよく混合し、ここにフェノフィブラートを入れて攪拌して完全に溶解し、黄色を帯びる澄んだ混合溶液を製造し、気泡が無くなるように放置した。
実施例3乃至5および市販中の微粉化された難溶性薬物を用いて溶解度を改善した製剤である「リピディルシュプラ(Lipidil supra)(登録商標)」(比較例3、緑十字社)に対して、試験例1と同様な方法でin vitro溶出試験を実施し、その結果を図3に示した。
下記の表5に表した組成比で、実施例2と同様な方式で混合して、黄色を帯びる澄んだ混合溶液を製造し、気泡が無くなるように放置した。
下記の表6に表した組成比で、実施例2と同様な方式で混合して、黄色を帯びる澄んだ混合溶液を製造し、気泡が無くなるように放置した。
下記の表7に表した組成比で、実施例2と同様な方式で混合して、黄色を帯びる澄んだ混合溶液を製造し、気泡が無くなるように放置した。
上記溶液を実施例8および試験例4と同様に試験し、その結果を図6に示した。対照群として、既存の市販製剤である「アタカンド(登録商標)」(比較例5)を使用した。図6から確認されるように、本発明の微粒球の溶出率が比較例5に比べて優れていることが分かる。
下記の表8に表した組成比で、実施例2と同様な方式で混合して、黄色を帯びる澄んだ混合溶液を製造し、気泡が無くなるように放置した。
以上、本発明の内容の特定部分を詳細に記述したが、当業界の通常の知識を有する者において、このような具体的技術は単に望ましい実施様態に過ぎず、これによって本発明の範囲が制限されることではない点は明らかである。従って、本発明の実質的な範囲は、添付された特許請求の範囲とこれらの等価物によって定義される。
Claims (4)
- a)水溶性高分子担体および難溶性薬物を水およびエタノールに溶解して混合溶液を製造する段階;および
b)前記混合溶液を噴霧乾燥で噴射する段階
を含むことを特徴とする、難溶性薬物含有微粒球の製造方法であって、
前記段階a)において界面活性剤を使用せず、
前記水溶性高分子担体はヒドロキシプロピルメチルセルロース(HPMC)であり、
前記難溶性薬物はフェノフィブラート(fenofibrate)であり、
前記エタノールと水との使用量比は、重量基準として1:1乃至3:1であり、
前記段階b)の噴霧乾燥は、アトマイザー式噴霧乾燥機を利用して、噴霧温度80乃至120℃で、噴霧速度3,000乃至5,000rpm、および注入速度10乃至100ml/minで行う、難溶性薬物含有微粒球の製造方法。 - シード(seed)を使用しないことを特徴とする、請求項1に記載の難溶性薬物含有微粒球の製造方法。
- 前記難溶性薬物と前記水溶性高分子担体の混合比は、重量基準として1:1乃至1:15であることを特徴とする、請求項1に記載の難溶性薬物含有微粒球の製造方法。
- 前記段階a)は、前記水溶性高分子担体を水に溶解して高分子担体水溶液を製造し、前記難溶性薬物をエタノールに溶解して難溶性薬物溶液を製造し、前記高分子担体水溶液および前記難溶性薬物溶液を混合して混合溶液を製造するか;または
水溶性高分子担体を水とエタノールの混合溶媒に溶解して高分子担体溶液を製造し、前記高分子担体溶液に前記難溶性薬物を溶解して混合溶液を製造して行うことを特徴とする、請求項1乃至3のいずれか1項に記載の難溶性薬物含有微粒球の製造方法。
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| JPH07112518B2 (ja) | 1986-07-31 | 1995-12-06 | コツホス・アドラ−・アクチエンゲゼルシヤフト | 回転ケ−スを持つミシン頭部を有する自動ミシン |
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| US9675521B2 (en) | 2010-09-02 | 2017-06-13 | Nippon Kayaku Kabushiki Kaisha | Process for producing drug-block copolymer composite and pharmaceutical preparation containing same |
| KR101441450B1 (ko) * | 2012-10-22 | 2014-09-24 | 충남대학교산학협력단 | 생체 이용률이 향상된 에프로살탄 고체 분산체, 이의 제조방법 및 용도 |
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| KR101576587B1 (ko) * | 2014-02-05 | 2015-12-10 | 한양대학교 에리카산학협력단 | 신규한 페노피브레이트 함유 젤라틴 나노입자 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07112518B2 (ja) | 1986-07-31 | 1995-12-06 | コツホス・アドラ−・アクチエンゲゼルシヤフト | 回転ケ−スを持つミシン頭部を有する自動ミシン |
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| EP2436377A2 (en) | 2012-04-04 |
| JP2012527491A (ja) | 2012-11-08 |
| CN102458373A (zh) | 2012-05-16 |
| CA2763465C (en) | 2015-05-05 |
| US9511026B2 (en) | 2016-12-06 |
| NZ596610A (en) | 2014-04-30 |
| AU2010253578B2 (en) | 2014-01-30 |
| WO2010137888A3 (ko) | 2011-04-21 |
| CN105832678A (zh) | 2016-08-10 |
| KR20120017043A (ko) | 2012-02-27 |
| US20140175686A1 (en) | 2014-06-26 |
| CA2763465A1 (en) | 2010-12-02 |
| EP2436377A4 (en) | 2012-11-21 |
| US20120076838A1 (en) | 2012-03-29 |
| KR101374854B1 (ko) | 2014-03-19 |
| WO2010137888A2 (ko) | 2010-12-02 |
| AU2010253578A1 (en) | 2011-12-15 |
| JP2015052007A (ja) | 2015-03-19 |
| EP2436377B1 (en) | 2015-04-15 |
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