JP2006249440A - 微粒子 - Google Patents
微粒子 Download PDFInfo
- Publication number
- JP2006249440A JP2006249440A JP2006125554A JP2006125554A JP2006249440A JP 2006249440 A JP2006249440 A JP 2006249440A JP 2006125554 A JP2006125554 A JP 2006125554A JP 2006125554 A JP2006125554 A JP 2006125554A JP 2006249440 A JP2006249440 A JP 2006249440A
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- JP
- Japan
- Prior art keywords
- solvent
- phase
- microparticles
- active agent
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Abstract
【解決手段】活性(例えば調剤或いは診断用)剤及び有機溶剤を含有する生物分解性生物適合性ポリマーマトリクスを含む微粒子を水性溶剤系と接触させ、それによって前記粒子中の前記有機溶剤の含有量を前記粒子の重量の2%以下にまで減少させ、前記溶剤系は(a)少なくとも前記粒子と接触している時間の内いくらかは温度が高め(例えば25〜40℃)であり、(b)水及び、前記有機溶剤に対する水混和性溶剤を含む、という条件の内少なくとも一つを満たしており、前記粒子を前記水性溶剤系から回収する工程を含むプロセスである。
【選択図】図1
Description
A)1)生物分解性、生物適合性ポリマーカプセル封入バインダと、
2)所定の水溶性があり第一溶剤に溶解または分散する活性剤、
を含む第一相を作成し、
B)水性第二相を作成し、
C)前記第一相と前第二相を、混合手段の影響下で配合してエマルジョン(分散液)を形成し、そのエマルジョン(分散液)中では前記第一相は不連続的で前記第二相は連続的であり、
D)前記不連続第一相を前記連続的第二相から分離し、
E)前記不連続第一相を
1)約25℃〜約40℃の温度範囲の水または
2)水及び前記第一相中の残留第一溶剤に対する第二溶剤を含む水溶液で洗浄し、
それによって残留第一溶剤のレベルを、前記微粒子の重量の約2%未満まで減少させる。
A)1)ポリ(グリコール酸)、ポリ−d,l−乳酸、ポリ−l−乳酸、及びそのコポリマーから選択される生物分解性、生物適合性ポリマーカプセル封入バインダ及び、
2)酢酸エチル及びベンジルアルコールを含むブレンド中に溶解もしくは分散したリスペリドン、9−ヒドロキシリスペリドン、及び薬剤として使用可能なそれらの塩類から選択され、前記ブレンドにハロゲン化炭化水素が含まれていない活性剤、
を含む第一相を作成し、
B)水に溶解したポリビニルアルコールを含む第二相を作成し、
C)前記第一相と前記第二相をスタティックミキサ内で配合して、前記第一相が不連続で前記第二相が連続的であるエマルジョンを形成し、
D)前記第一及び第二相を冷却液に浸漬し、
E)前記不連続第一相を微粒子の形態で遊離し、
F)前記不連続第一相を水とエタノールを含む水溶液で洗浄し、それによってベンジルアルコールのレベルを、前記微粒子の重量の約2%未満まで減少させる。
A)第一相を作成し、前記第一相は活性剤(生物的活性剤等)、生物分解性、生物適合性ポリマー及び第一溶剤を含み、
B)前記第一相が実質的に混和しない水性第二相を作成し、
C)前記第一相を第一流量でスタティックミキサを介して流し、
D)前記第一相と前記第二相が前記スタティックミキサを介して同時に流れるように前記第二相を第二流量で前記スタティックミキサを介して流し、それによって前記活性剤を含有する微粒子を生成し、
E)前記微粒子を遊離させ、
F)前記微粒子を高めの温度で水洗するか、もしくは水及び、前記微粒子中の第一溶剤に対する第二溶剤を含む水溶液で洗浄し、それによって残留第一溶剤のレベルを、前記微粒子の重量の約2%未満にまで減少させる。
その微粒子の大きさは約25〜約180ミクロンで、薬剤として使用可能な担体に入っている。その微粒子はポリ(グリコール酸)とポリ(d,l−乳酸)のコポリマーを含み、ラクチドのグリコリドに対する分子比は約85:15〜約50:50の範囲内で、その中にリスペリドンか9−ヒドロキシ−リスペリドンを含む活性剤が約35〜40%、重量にしてベンジルアルコールの約0.5〜約1.5%の範囲で分散または溶解している。
(2)ブレンド時に、活性剤を溶解もしくは分散させることができる
(3)ブレンド時に、ポリマーマトリクス材料を溶解させることができる
(4)活性剤に対し化学的に不活性である
(5)生物適合性を有する
(6)使用されているいかなる冷却液ともほとんど混和しない、例えば溶解度が約0.1〜25%である
(7)ハロゲン化炭化水素類以外の溶剤。
リスペリドン含有微細球のサンプルを一連の洗浄実験にかけて、最終生成物特性への影響を判断し、好ましい洗浄条件を特定した。サンプルには、75:25メディソーブ(R)ラクチド:グリコリドコポリマーにカプセル封入されたリスペリドンが含まれていた。洗浄実験前、その薬物の含有量は重量にして36.8%、そしてベンジルアルコールのレベルは重量にして5.2%であった。その微細球を洗浄媒体に移し、設定時間毎にサンプルを取り出して、真空乾燥した。
Claims (19)
- 生物分解性生物適合性微粒子を作成するプロセスであり、活性剤及び有機溶剤を含有する生物分解性生物適合性ポリマーマトリクスを含む微粒子を水性溶剤系と接触させ、それによって前記微粒子中の前記有機溶剤の含有量を前記微粒子の重量の2%以下まで減少させ、前記溶剤系は(a)少なくとも前記微粒子と接触している時間の内いくらかは温度が高めで(b)水及び前記有機溶剤に対する水混和性溶剤を含む、という条件の内少なくとも一つを満たしており、前記微粒子を前記水性溶剤系から回収する工程を含むプロセス。
- 生物分解性、生物適合性微粒子を作成する、クレーム1に記載のプロセスであり、
A)1)生物分解性、生物適合性ポリマーカプセル封入バインダと、
2)所定の水溶性を持ち第一溶剤に溶解または分散する活性剤、
を含む第一相を作成し、
B)水性第二相を作成し、
C)前記第一相と前第二相を、混合手段の影響下で配合してエマルジョンを形成し、そのエマルジョン中では前記第一相は不連続的、前記第二相は連続的であり、
D)前記不連続第一相を前記連続第二相から分離し、
E)前記不連続第一相を
1)約25℃〜約40℃の温度範囲の水、または
2)水及び、前記第一相中の残留第一溶剤に対する第二溶剤を含有する水溶液、
で洗浄し、
それによって残留第一溶剤のレベルを、前記微粒子の重量の約2%未満まで減少させる工程を含むプロセス。 - 工程C)と工程D)の間にさらに冷却工程を含む、クレーム2に記載のプロセス。
- 生物分解性、生物適合性微粒子を作成する、請求1に記載のプロセスであり、
A)第一相を作成し、前記第一相は活性剤、生物分解性、生物適合性ポリマー及び第一溶剤を含み、
B)前記第一相が実質的に混和しない第二相を作成し、
C)前記第一相を第一流量でスタティックミキサを介して流し、
D)前記第一相と前記第二相が前記スタティックミキサを介して同時に流れるように、前記第二相を第二流量で前記スタティックミキサを介して流し、それによって前記活性剤を含有する微粒子を生成し、
E)前記微粒子を遊離させ、
F)前記微粒子を高めの温度で水洗するか、もしくは、水と前記微粒子中の第一溶剤に対する第二溶剤を含む水溶液で洗浄し、それによって残留第一溶剤のレベルを、前記微粒子の重量の約2%未満まで減少させる工程を含むプロセス。 - 前記第一溶剤が少なくとも二種類の相互に混和性を有する有機溶剤の溶剤ブレンドであり、前記第二相が水及び任意で親水性コロイドまたは界面活性剤を含む、クレーム2から4のいずれかに記載のプロセス。
- 前記有機溶剤の内一つがエステルでもう一つがベンジルアルコールである、クレーム5に記載のプロセス。
- 前記溶剤ブレンドが酢酸エチルとベンジルアルコールを含み、前記第二相がポリ(ビニルアルコール)を含み、前記ポリマーまたはバインダがポリ(グリコール酸)、ポリ(d,l−乳酸)、ポリ(l−乳酸)、及びそのコポリマーから選択される、クレーム5及び6のいずれかに記載のプロセス。
- 前記活性剤が少なくとも一つの塩基部分(basic moiety)を含む、前記クレームのいずれかに記載のプロセス。
- 前記活性剤がリスペリドン(risperidone)、9−ヒドロキシリスペリドン、及び薬剤として使用可能なそれらの塩類から選択される、前記クレームのいずれかに記載のプロセス。
- 前記水溶液または水性溶剤系が、水及びC1−C4アルコールを含む、前記クレームのいずれかに記載のプロセス。
- 前記C1−C4アルコールがエタノールである、クレーム10に記載のプロセス。
- 生物分解性、生物適合性微粒子を作成する、クレーム1に記載のプロセスであり、
A) 1)ポリ(グリコール酸)、ポリ(d,l−乳酸)、ポリ(l−乳酸)、及びそのコポリマーから選択される生物分解性、生物適合性ポリマーカプセル封入バインダ及び、
2)酢酸エチル及びベンジルアルコールを含むブレンド中に溶解もしくは分散したリスペリドン、9−ヒドロキシリスペリドン、及び薬剤として使用可能なそれらの塩類から選択され、前記ブレンドにハロゲン化炭化水素が含まれていない活性剤、
を含む第一相を作成し、
B)水に溶解したポリビニルアルコールを含む第二相を作成し、
C)前記第一相と前記第二相を前記スタティックミキサ中で配合して、前記第一相が不連続的、前記第二相が連続的であるエマルジョン(分散剤)を形成し、
D)前記第一及び第二相を冷却液に浸漬し、
E)前記不連続第一相を微粒子の形態で遊離し、
F)前記不連続第一相を水とエタノールを含む水溶液で洗浄し、それによってベンジルアルコールのレベルを、前記微粒子の重量の約2%未満まで減少させる工程を含むプロセス。 - 活性剤と有機溶剤を含有する生物分解性生物適合性ポリマーマトリクスの微粒子を含み、前記有機溶剤が前記微粒子の総重量の2%以下の割合で前記微粒子中に存在している、粒子状材料。
- クレーム1から12までのいずれかで請求されたプロセスで作成された、活性剤を含有する生物分解性生物適合性ポリマーマトリクスの微粒子。
- クレーム13及び14のいずれかによる微粒子と共に、薬剤として使用可能な担体または付形剤を少なくとも一つ含む、薬剤用組成物。
- 前記ポリマーバインダがグリコール酸とd,l−乳酸のコポリマーである、クレーム15に記載の組成物。
- 前記微粒子内の前記残留溶剤の含有量が重量にして0.5〜1.5%の範囲であり、前記残留溶剤がベンジルアルコールである、クレーム15及び16のいずれかに記載の組成物。
- 大きさにして25〜180ミクロンの範囲の生物分解性生物適合性微粒子を、薬剤として使用可能な担体中に含む、クレーム15に記載の組成物であり、前記微粒子は、ポリ(グリコール酸)とポリ(d,l−乳酸)のコポリマーを含み、そこではラクチドとグリコリドの分子比が85:15〜50:50の範囲内であり、その中にリスペリドン、9−ヒドロキシーリスペリドン及び薬剤として使用されるそれらの塩類から選ばれる活性剤が35〜40%、及び重量にしてベンジルアルコールの0.5〜1.5%が分散もしくは溶解している組成物。
- 診断もしくは治療に用いられる医薬品の製造に関する、クレーム1から12までのいずれかで請求されるプロセスによって作成される粒子の使用方法。
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| JP2012503084A (ja) * | 2008-09-18 | 2012-02-02 | サーモディクス ファーマシューティカルズ, インコーポレイテッド | 溶媒および塩を用いるマイクロカプセル封入プロセス |
| JP2015134810A (ja) * | 2008-09-18 | 2015-07-27 | エボニック コーポレイションEvonik Corporation | 溶媒および塩を用いるマイクロカプセル封入プロセス |
| JP2012508731A (ja) * | 2008-11-14 | 2012-04-12 | イファ ユニバーシティ−インダストリー コラボレーション ファウンデーション | 高分子微粒球の製造方法及びその方法により製造された高分子微粒球 |
| JP2014513720A (ja) * | 2011-05-20 | 2014-06-05 | エスケー ケミカルス カンパニー リミテッド | 初期薬物放出が減少された高分子微小球の製造方法及びその方法により製造された高分子微小球(Methodforpreparingmicroparticleswithreducedinitialdrugreleaseandmicroparticlespreparethereby) |
| JP2017128565A (ja) * | 2011-05-20 | 2017-07-27 | エスケー ケミカルス カンパニー リミテッド | 初期過多放出が減少された高分子微小粒子の製造方法及びその方法により製造された高分子微小粒子 |
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