JP2009502740A - 胃酸分泌 - Google Patents
胃酸分泌 Download PDFInfo
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- JP2009502740A JP2009502740A JP2008510651A JP2008510651A JP2009502740A JP 2009502740 A JP2009502740 A JP 2009502740A JP 2008510651 A JP2008510651 A JP 2008510651A JP 2008510651 A JP2008510651 A JP 2008510651A JP 2009502740 A JP2009502740 A JP 2009502740A
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- acid
- gastric
- carboxylic acid
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Abstract
Description
本出願は、米国仮出願60/679,664(2005年5月11日出願)を基礎とし、その優先権を主張するものであり、そこにおける開示はこの引用によりその全体が本明細書に組み込まれる。
本発明は、胃酸分泌を阻害する新規経口組成物であって、一以上の小型モノカルボン酸、ジカルボン酸またはトリカルボン酸の壁細胞を活性化するのに十分な量をプロトンポンプ阻害剤と共に含む組成物に関する。本発明は更に、そのような組成物を哺乳類における胃酸分泌を減少させるために使用する方法に関する。
非常に多くの病理学的状態は、胃酸分泌を抑制することを必要とすることにより特徴付けられる。そのような状態は、しかしながらこれらに限定するものではないが、ゾリンガー−エリソン症候群(ZES)、胃−食道逆流性疾患(GERD)、消化性潰瘍性疾患、十二指腸潰瘍、食道炎などを含む。消化性潰瘍などの症状は、重篤な合併症を有し、先進国において最も一般的な疾患の幾つかを代表するものである。
本発明の目的は、胃酸分泌を阻害する増強された活性を有するPPIを基礎とする組成物を提供することである。
壁細胞の活性化は、PPIプロドラッグから、胃H+/K+−ATPaseプロトンポンプの不可逆的阻害剤として作用する活性型への変換のために必要である。本発明の組成物は食物摂取の必要性を伴わない胃酸分泌の阻害におけるPPIの有効性を増加する活性剤の独特な組み合わせを提供する。
胃における壁細胞活性化剤の保持時間の延長することは、例えば、胃が空になることに抵抗する大きさに胃において急速に展開する投与量形態を使用することにより可能である。そのような系は、それらの完全性を延長された期間に亘り維持し、小さい部分への分解が生じるまで全く胃から空にしないであろう。コールドウェル(Caldwell、L. J.、Gardener、C. R.、Cargill、R. C. (1988)、U.S. Pat. No. 4,767,627)は、侵食性ポリマーで作られ、折りたたまれて硬ゼラチンカプセルに挿入された薬物を投入されたクロス形状のデバイスを記載する。経口投与に続き、ゼラチンシェルが崩壊し、折りたたまれたデバイスが開き出る。最小のサイズが1.6cmで最大サイズが5cmであれば、当該系が胃から通過できるのに十分に小さくなる時点までに当該ポリマーが侵食されるまで、幽門部を介して胃を通過しない。
[例1]ラットにおけるコハク酸ナトリウムの経口投与に続く胃酸分泌の刺激
ラットに15mg/kgのコハク酸ナトリウムを胃管栄養法を用いて投与した。30分後、そのラットをケタミン/ドミター(ketamin/domitor)で麻酔し、幽門部を結紮した。更に60分後に、胃液を胃管腔から採取した。酸排出をNaOHでの滴定により測定した。mEq HClで表した総酸排出を、サンプルの体積に酸濃度を掛けることにより算出した。結果は、各実験群からの12匹の動物の平均値±SEMで表した。図1に示すとおり、コハク酸ナトリウムの経口投与は幽門部結紮ラットにおける胃酸分泌を有意に促進した。
パントプラゾールによる胃酸分泌阻害におけるコハク酸の効果を検討するために、意識のある幽門部結紮ラットの実験モデルを使用した。この実験モデルは、意識のある動物における胃酸分泌における薬物の効果を解析することを可能にし、胃酸分泌における麻酔の効果を避けることが可能である。パントプラゾール単独(10mg/ml)およびコハク酸(15mg/ml)と併用した場合を経口胃管栄養法により解析した。プラセボとして水を投与した。15分後、幽門部結紮処置の実行および閉腹に十分な短時間(5分)麻酔ガス器を用いて当該動物を麻酔した。次に動物を更に90分間それのケージに戻し、屠殺した。結紮を食道あたりに行い、胃を摘出し、胃内容物を採取した。遠心に続き、胃排出および胃液サンプルのpHを測定した。データは胃排出およびpH値の平均値±SDで表した。動物数は、各実験群で4から8である。
[硬ゼラチンカプセル]
硬ゼラチンカプセルは、コハク酸(ScA)とPPIの混合された顆粒集団を含んでよい。ScA顆粒は、即時放出または遅延放出製剤であり、PPIは、腸溶コーティング顆粒または時間依存性放出コーティング(遅延放出)である。顆粒は、硬ゼラチンカプセルに、カプセル当たり40mgのPPIおよび200mgのScAに相当する量でパッケージされてよい。
40mg腸溶コーティング(Eudragit)または時間依存性放出コーティング(HPMC)PPI顆粒;
200mgScA顆粒;
希釈剤。
40mg腸溶コーティングまたは時間依存性放出コーティングPPI顆粒200mgScA顆粒(HPMCコーティング);
希釈剤。
当該医薬組成物は、錠剤またはより好ましくはカプセルの形態であってよい。当該カプセルは、混合された顆粒集団としてScA(上述したとおりの即時放出または遅延放出)、腸溶コーティングまたは時間依存放出コーティングPPI(加圧圧力下で安定)およびカプセル製剤に加圧されるべき広範な慣習的な錠剤補助剤を含む。
ScAはポリオックス WSR N60 およびHPMC K100Mの組み合わせと顆粒化される。これらの顆粒は、さらにラクトースおよびHPMCと組み合わされ、後に、胃での保留が可能な十分なだけの大きさのサイズに急速に膨張することが可能なミニタブに加圧される。当該ポリマーマトリックスは、胃部へのScA放出を制御する。
当該錠剤の内部コアは制御された放出を助け、投与量形態の膨張を促すヒドロゲルの混合物と組み合わされたScAで構成される。膨張したコアは胃保留特性を有する。ゴム状の混合物:キサンタンゴム、ゲランゴム(gellan gum):がセルロース誘導体、例えば、ナトリウムカルボキシメチルセルロースまたはHPMCと共に適用されてもよい。
硬ゼラチンカプセルは以下を充填される:
a)HPMC K100MとビタミンE−TPGSと組み合わされ、塩化ナトリウム(当該カプセルに水を誘引するための浸透圧剤)と併用されるScA顆粒。
経口懸濁剤のための粉末は、ScAおよび腸溶コーティングまたは時間依存性放出コーティングPPI顆粒を含む。ScA顆粒は、迅速放出または遅延放出製剤であってもよい(上述した通り)。PPIは、腸溶コーティングまたは時間依存性放出コーティング顆粒(遅延放出)として製剤化される。当該組成物は、水と共に構成するように個々にパックされる。水と混合された場合に、粉末は一様な懸濁液になる。
PPIおよびコハク酸溶液は、リン酸緩衝化生食にコハク酸を溶解することにより調製される。PPIおよびコハク酸の溶液のための生理学的リン酸緩衝化生食溶液の調製のために、リン酸緩衝化生食(PBS)の濃縮(20倍)溶液を希釈し、1倍の溶液を得る。20倍のPBS溶液は、以下の試薬を十分な水に溶解し、溶液1000mLを作ることにより調製する:塩化ナトリウム、160グラム;塩化カリウム、4.0グラム;リン酸水素ナトリウム、23グラム;リン酸二水素カリウム、4.0グラム;および任意のフェノールレッドパウダー、0.4グラム。当該PBS溶液を次に、オートクレーブで15分間15ポンドの圧力で滅菌し、滅菌水で希釈し、PPIおよびコハク酸の溶解に先駆けて1倍の濃度にする。静脈投与のための投与量形態を調製するために、PPIおよびコハク酸を1倍のPBSにそれぞれ0.2mgおよび1mg/mLの濃度で溶解し、得られた溶液(200mL)を、当該化合物の静脈投与における使用のための封可能な半透明なプラスチックバッグに分配する。これらの工程は滅菌条件下で行う。
Claims (23)
- 活性成分としての薬学的に有効な量の、(i)壁細胞を活性化する一以上の小型カルボン酸分子またはその塩;および(ii)不可逆性の胃H+/K+−ATPaseプロトンポンプインヒビター(PPI)を具備する医薬組成物であって、当該小型カルボン酸分子が胃管腔に位置する壁細胞を活性化するために十分な量である医薬組成物。
- 請求項1に記載の医薬組成物であって、前記小型カルボン酸分子が、3から6の炭素原子を有する飽和または不飽和モノカルボン酸、ジカルボン酸、トリカルボン酸分子である医薬組成物。
- 請求項2に記載の医薬組成物であって、前記小型カルボン酸分子が、以下からの一以上である医薬組成物;マレイン酸、コハク酸、ピルベート、シトレート、フマレート、α−グルタレート、スクシニルCoAおよびオキザロアセテート、またはその何れかの誘導体またはその塩。
- 請求項1に記載の医薬組成物であって、当該活性成分の放出が、当該PPIの活性が当該壁細胞活性化剤の活性と同調するように制御される医薬組成物。
- 請求項4の医薬組成物であって、経口投与に適切な形態にある医薬組成物。
- 請求項5に記載の医薬組成物であって、一以上の小型酸分子の量が50から300mgである医薬組成物。
- 請求項5に記載の医薬組成物であって、当該活性成分は、以下から選択される単回単位経口投与量形態に製剤化される医薬組成物:二層錠、プレスコーティング錠、多粒子カプセル、発泡錠、懸濁錠、溶液および懸濁液。
- 請求項7に記載の医薬組成物であって、当該活性成分は、当該カルボン酸分子とPPIの活性の間に同調するように、腸溶コーティングでコートされたビーズに粒状化される、または時間依存性放出性ポリマーである医薬組成物。
- 請求項8に記載の医薬組成物であって、当該時間依存性放出ポリマーが水環境において膨張する少なくとも一のポリマーを含む医薬組成物。
- 請求項9に記載の医薬組成物であって、少なくとも一つのポリマーが以下を具備する群から選択される医薬組成物:合成ポリマーおよびセルロースベースポリマー、またはこれらの置換された誘導体。
- 請求項1の医薬組成物であって、一以上の小型カルボン酸分子とPPIとの比が約20:1から約1:50である医薬組成物。
- 請求項1の医薬組成物であって、当該PPIが以下からなる群より選択される医薬組成物:ラベプラゾール、オメプラゾール、イソメウラゾール、ランソプラゾール、パントプラゾール、レミノプラゾール、テナトプラゾール、これらの単一鏡像異性体、これらのアルカリ塩およびこれらの混合物。
- 請求項1に記載の医薬組成物であって、当該組成物が更に、胃における塩基性pHを提供するために十分な量の緩衝剤、または胃において細菌存在に対して有効な量の抗性物質を含む医薬組成物。
- 活性成分として薬学的に有効な量の(i)一以上の小型カルボン酸分子またはその何れかの塩;および(ii)不可逆的胃H+/K+−ATPアーゼプロトンポンプ阻害剤(PPI)を含む薬学的キットであって、ここで、当該小型カルボン酸分子は、胃管腔に位置する壁細胞を活性化するのに有効な量にある薬学的キット。
- 請求項14に記載のキットであって、当該活性成分は、分離された単位投与量形態で製剤されるキット。
- 請求項15に記載のキットであって、当該活性成分が分離された単位投与量形態にあるキット。
- 哺乳類における胃酸分泌を減少する方法であって、前記方法が、一以上の小型カルボン酸分子またはこれらの何れかの塩の有効量を、有効量のプロトンポンプ阻害剤(PPI)と共に投与することを含み、ここで、当該小型カルボン酸分子は、PPIと共に胃管腔に位置する壁細胞を活性化する量であり、それにより哺乳類の胃酸分泌を減少する方法。
- 請求項17に記載の方法であって、当該疾患が以下からなる群より選択される方法; 逆流性食道炎、胃炎、十二指腸炎、胃潰瘍、十二指腸潰瘍、非ステロイド性抗炎症剤(NSAID)関連の病態、非潰瘍性消化不良、胃−食道逆流性疾患、ガストリノーマ、急性上流胃腸管出血、ストレス性潰瘍、ヘリコバクター・ピロリ感染、ゾリンガー−エリソン症候群(ZES)、ウェルナー症候群,および全身性肥満細胞症。
- 請求項17に記載の方法であって、当該哺乳類がヒト対象である方法。
- 請求項17に記載の方法であって、当該一以上の小型カルボン酸分子が、PPIの投与と同時に、予めまたはそれに続いて投与される方法。
- 請求項17に記載の方法であって、当該一以上の小型カルボン酸分子が以下から選択される方法;マレイン酸、コハク酸、ピルビン酸、クエン酸、フマル酸、α−ケトグルタミン酸、コハク酸、スクシニルCoAおよびオキサロ酢酸またはこれらの誘導体または塩である方法。
- 請求項17に記載の方法であって、当該一以上の小型カルボン酸分子が有効量のPPIと共に経口投与を経て投与される方法。
- 請求項17に記載の方法であって、当該一以上の小型カルボン酸分子とPPIとの比が約20:1から1:5である方法。
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| JP2011507956A (ja) * | 2007-12-28 | 2011-03-10 | インパックス ラボラトリーズ、 インコーポレイテッド | レボドパの放出制御製剤及びその使用 |
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| US7803817B2 (en) | 2005-05-11 | 2010-09-28 | Vecta, Ltd. | Composition and methods for inhibiting gastric acid secretion |
| PL226695B1 (pl) * | 2006-07-03 | 2017-08-31 | Danuta Kruszewska | Środek do zastosowania w zapobieganiu i/lub hamowaniu kolonizacji Helicobacter pylori, zastosowanie soli kwasu alfa‑ketoglutarowego z metalami alkalicznymi i ziem alkalicznych do wytwarzania środka leczniczego oraz dodatku do żywności do zapobiegania i/lub hamowania kolonizacji Helicobacter pylori |
| ES2511792T3 (es) * | 2006-07-25 | 2014-10-23 | Vecta Ltd. | Composiciones y métodos para la inhibición de la secreción de ácido gástrico usando derivados de pequeños ácidos dicarboxílicos en combinación con IBP |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011507956A (ja) * | 2007-12-28 | 2011-03-10 | インパックス ラボラトリーズ、 インコーポレイテッド | レボドパの放出制御製剤及びその使用 |
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| Publication number | Publication date |
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| TW200714278A (en) | 2007-04-16 |
| PL1879566T3 (pl) | 2015-01-30 |
| KR101421994B1 (ko) | 2014-07-22 |
| TWI388316B (zh) | 2013-03-11 |
| AU2005331689A1 (en) | 2006-11-16 |
| ZA200709745B (en) | 2008-11-26 |
| US9278080B2 (en) | 2016-03-08 |
| US7803817B2 (en) | 2010-09-28 |
| ES2482771T3 (es) | 2014-08-04 |
| KR20080005566A (ko) | 2008-01-14 |
| DK1879566T3 (da) | 2014-06-10 |
| RU2385154C2 (ru) | 2010-03-27 |
| KR20120051097A (ko) | 2012-05-21 |
| EP1879566A1 (en) | 2008-01-23 |
| CA2607803C (en) | 2013-12-17 |
| EP1879566B1 (en) | 2014-03-12 |
| WO2006120500A1 (en) | 2006-11-16 |
| US20060257467A1 (en) | 2006-11-16 |
| KR101447909B1 (ko) | 2014-10-08 |
| RU2007140941A (ru) | 2009-06-20 |
| EP1879566A4 (en) | 2009-04-15 |
| CN101184482B (zh) | 2012-02-01 |
| CN101184482A (zh) | 2008-05-21 |
| JP5161071B2 (ja) | 2013-03-13 |
| HK1120421A1 (en) | 2009-04-03 |
| IL187236A (en) | 2016-07-31 |
| CA2607803A1 (en) | 2006-11-16 |
| AU2005331689B2 (en) | 2011-05-19 |
| US20100247634A1 (en) | 2010-09-30 |
| IL187236A0 (en) | 2008-06-05 |
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