JP4334610B2 - プレガバリンを含有する固形の薬学的組成物 - Google Patents
プレガバリンを含有する固形の薬学的組成物 Download PDFInfo
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Description
さらに、安定性研究は、この薬学的組成物のいずれの成分も望ましくないラクタム形成を促進しないことを示唆している。
そうでないことが示されない限り、本開示では以下の定義を用いる。
37℃の水性溶出媒体(0.06N HClまたは0.5M酢酸緩衝液)に浸した医薬品サンプルから放出されるAPIの量は、USP装置2(パドル法)および装置3(レシプロケーティングシリンダー)をそれぞれ50rpmまたは5dpmで操作して用いて測定した。溶出媒体のサンプル(1mL)は、典型的には、1、2、4、6、9、12、16、および24時間で採取し、以下の条件下でHPLCを用いて分析した:カラム:Zorbax SB−CN、150mm×4.6mm、5μm粒径;カラム温度:23℃;検出波長:210nm;流速1mL/分;注入量:25μL;移動相の組成:0.05Mスルホン酸/ヘキサンおよび2mL Et3N;pHはオルトリン酸:ACN(880:130)で3.1に調整;実行時間:8分。
0.06N HCl水性溶出媒体に浸した後の時間の関数としての医薬品のサイズの増大を、USP装置2(パドル法)を用いて測定した。医薬品サンプルを定期的に溶出媒体から取り出し、それらの寸法をカリパスを用いて測定した。
医薬品サンプルを、0.06N HCl水性溶出媒体を含むUSP装置2(パドル法)内に置いた。医薬品サンプルを定期的に取り出し、それらの硬度をテクスチャーアナライザー(TA 132)を以下の設定で用いて測定した:5kgロードセル;TA−8 1/4''ボールプローブ;0.5gトリガーフォース;0.2mm/秒 測定スピード;10ポイント/秒 取得速度;10mm間隔。
安定性試験は、医薬品サンプルを開口状態のHDPEボトルまたは誘導シールしたHDPEボトルに入れ、これを40℃および75%相対湿度下で保存することにより行った。医薬品サンプルを様々な時間間隔、例えば最初のスクリーニングについては2週間、その後の試験については3週間、6週間、または3ヶ月で取り出し、HPLCを用いてプレガバリン含有量(%、w/w)およびラクタム含有量(%、ラクタム重量/プレガバリンの初期重量)を分析した。
表2および3は、プレガバリンおよび様々な賦形剤を含有する研究室スケールのバッチ(25g)の組成を示し;表4および5は、時間の関数として薬物放出の結果を示す。各処方物につき、ステアリン酸マグネシウムを除く全ての錠剤成分をTURBULA(登録商標)ミキサーにて約15分間ブレンドすることによって医薬品を製造した。ステアリン酸マグネシウムは#20標準ふるいを通し、スパチュラを用いてTURBULA(登録商標)ミキサーの内容物と混合した。その後、得られた粗ブレンド品をTURBULA(登録商標)ミキサーにてさらに4分間混合し、最終ブレンド品を得た。各最終ブレンド品を、CARVER(登録商標)プレスにて3000ポンド(実施例1〜5)または2000ポンド(実施例6〜11)の圧縮力および0.1分のドウェル時間を用いて圧縮し、約30kpの平均硬度値ならびにそれぞれ1gおよび1.125gの名目錠剤重量を有する錠剤を得た。いくつかの処方物(実施例1〜5)については、プレガバリンを、他の賦形剤とのブレンド前に、COMPRITOL(登録商標)888を用いて高せん断造粒によりコーティングした。
表6は、プレガバリンおよび賦形剤を含有する研究室スケールのバッチ(100g)の組成を示し、表7は時間の関数として薬物放出を示す。各組成物につき、最初に押出し造粒装置においてプレガバリンをCOMPRITOL(登録商標)888と混合することによって医薬品を製造した。ステアリン酸マグネシウムを除いて、残りの錠剤成分を、得られたプレガバリン粒と1パイントV型ブレンダーにて約15分間ブレンドした。ステアリン酸マグネシウムは#20標準ふるいを通し、スパチュラを用いてV型ブレンダーの内容物と混合した。その後、得られた粗ブレンド品をV型ブレンダーにてさらに4分間混合し、最終ブレンド品を得た。各最終ブレンド品を、疑似KORSCH(登録商標)XL 400プレス(すなわちPRESSTER(登録商標)コンパクションシミュレーター)を約21kNの平均圧縮力および12ミリ秒の平均ドウェル時間で用いて圧縮した。この錠剤は、約20kpの平均硬度および約1gの名目錠剤重量を示した。
表8は、プレガバリンおよび賦形剤を含有する研究室スケールのバッチの組成を示し;表9は、時間の関数としてラクタム形成を示す。各処方物を、実施例12〜14に記載の上記プロセスと同様のプロセスを用いて製造した。
表10は、プレガバリンおよび賦形剤を含有する研究室スケールのバッチ(4kgまで)の組成を示し;表11は、時間の関数として薬物放出を示し;表12および13は、水溶液に浸した後の錠剤の膨張および錠剤硬度の変化を示し;表14は、時間の関数としてラクタム形成を示す。いくつかの組成に関する医薬品(実施例25〜29)は、実施例12〜14に記載のプロセスと同様のプロセスを用いて製造した。
表15は、プレガバリンの定常状態時最小(CMIN)および最大(CMAX)血漿濃度のシミュレーション、ならびにプレガバリン600mgを含有するQD薬学的組成物についてはCMAXまでの時間(tMAX)を示す。この組成物は、tR=3、5、8、または10時間の間、胃に滞留し、総溶出時間t100=6、8、10、12、または16時間を有する。比較の目的のため、表15は、一日二回投与されるプレガバリン300mgを含有するIR薬学的組成物についての定常状態時PKパラメータも示す。
実施例30のQD処方物の効能を評価するため、単回投与薬物動態研究を行った。QD剤形を、米国食品医薬品局により作製されたガイドラインに従い、(1)絶食状態で、(2)高脂肪の朝食後に(午前処置)、および(3)高脂肪分の夕食後に(夕方処置)与えた。米国保健社会福祉省食品医薬品局医薬品評価センター、Guidance for Industry,Food−Effect Bioavailability and Fed Bioequivalence Studies(2002年12月)を参照のこと。ここで、「高脂肪」は、その食事の総カロリー含有量のおよそ50%が脂肪由来であることを意味する。これらの三種の処置の薬物動態結果を、プレガバリン、ラクトース一水和物、トウモロコシデンプン、およびタルクから構成される同一用量(300mg)の即効型処方物(カプセル)について得られた結果と比較した。
Claims (10)
- 薬学的有効成分および賦形剤を含み、薬学的有効成分がプレガバリンまたは薬学的に許容されるその錯体、塩、溶媒和物、もしくは水和物を含み、賦形剤がマトリクス形成剤および膨張剤を含み、マトリクス形成剤がポリ酢酸ビニルおよびポリビニルピロリドンを含み、膨張剤が架橋型ポリビニルピロリドンを含む、一日一回の経口投与に適合された薬学的組成物。
- 薬学的組成物が、水分との接触によって、9mmまたはそれ以上の大きさに拡大する、請求項1に記載の薬学的組成物。
- 薬学的組成物が、経口投与後3時間から14時間の間、被検体の胃に滞留する、請求項1または2に記載の薬学的組成物。
- 薬学的有効成分は、薬学的組成物が経口投与後に被検体の胃に滞留する時間よりも4時間から6時間長い時間をかけて放出される、請求項1〜3のいずれか一項に記載の薬学的組成物。
- 薬学的有効成分が12時間から20時間の時間をかけて放出される、請求項1〜4のいずれか一項に記載の薬学的組成物。
- 薬学的有効成分が、9μg/mLもしくはそれ未満のインビボ定常状態時CMAX、または0.7μg/mLもしくはそれ以上のインビボ定常状態時CMIN、または9μg/mLもしくはそれ未満のインビボ定常状態時CMAXおよび0.7μg/mLまたはそれ以上のインビボ定常状態時CMINを示す、請求項1〜5のいずれか一項に記載の薬学的組成物。
- 膨張剤がポリエチレンオキシドをさらに含む、請求項1〜6のいずれか一項に記載の薬学的組成物。
- 薬学的組成物が、プレガバリン、ラクトース一水和物、トウモロコシデンプン、および
タルクを含む即効型処方物と生物学的に等価である、請求項1〜7のいずれか一項に記載の薬学的組成物。 - 被検体におけるプレガバリン応答性の状態または障害の処置のための、請求項1〜8のいずれか一項に記載の薬学的組成物。
- 状態または障害が、てんかん、疼痛、糖尿病性末梢神経障害、帯状疱疹後神経痛、精神運動興奮薬に関連する生理学的状態、炎症、胃腸障害、アルコール中毒、不眠症、線維筋痛症、不安、うつ、躁病、および双極性障害から選択される、請求項9に記載の薬学的組成物。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US73258905P | 2005-11-02 | 2005-11-02 | |
| PCT/IB2006/003063 WO2007052125A2 (en) | 2005-11-02 | 2006-10-23 | Solid oral pharmaceutical compositions for once daily dosing containing pregabalin, a matrix forming agent and a swelling agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
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