JP2022525713A - 血栓症の治療のための医薬組成物および方法および医療機器による送り込み - Google Patents
血栓症の治療のための医薬組成物および方法および医療機器による送り込み Download PDFInfo
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Abstract
Description
・アデノシン二リン酸(ADP)受容体阻害剤:例えば、クロピドグレル(プラビックス(Plavix));プラスグレル(エフィエント(Effient));チカグレロル(ブリリンタ(Brilinta);チクロピジン(チクリッド(Ticlid))。
・ホスホジエステラーゼ阻害剤、例えば、シロスタゾール(プレタール(Pletal))。
・プロテアーゼ活性化受容体-1(PAR-l)アンタゴニスト、例えば、ボラパクサール(Vorapaxar)(Zontivity)。
・グリコプロテインIIB/IIIA阻害剤(静脈内使用のみ):例えば、アブシキシマブ(レオプロ(ReoPro));エプティフィバチド(インテグリン(Integrilin));チロフィバン(アグラスタット(Aggrastat))。
・アデノシン再取り込み阻害薬、例えば、ジピリダモール(ペルサンチン(Persantine))。
・トロンボキサン阻害剤、例えば、トロンボキサン合成酵素阻害剤;トロンボキサン受容体拮抗剤;テルトロバン(Terutroban)。
・ヘパリン、および
・組織プラスミノーゲン活性化剤t-PA、例えば、アルテプラーゼ(Activase);レテプラーゼ(Retavase);テネクテプラーゼ(TNKase);アニストレプラーゼ(Eminase);ストレプトキナーゼ(Kabikinase、Streptase);ウロキナーゼ(Abbokinase)。
以下の実施例は、本開示のいくつかの実施形態をさらに説明するためのものである。それらは、特許請求の範囲をいかなる方法でも制限することを意図していない。当業者であれば、ここに記載された本発明の一般的な思想(idea)から逸脱することなく、さらなる発展が可能であることを理解するであろう。
ここに記載した実施形態のタンパク質分解酵素混合物は、全身性の影響がなく、幅広い安全性を示した。したがって、体液中のプロテアーゼ阻害剤が不活性化するため、混合物が健康な組織に影響を与える危険性はない。
以下の研究の目的は,臨床環境におけるタンパク質分解酵素のカテーテル投与を含む血栓溶解の速度を評価することであった。まず、血管内の血液をリンゲル液または生理食塩水でリンス(洗浄)して除去し、同時に近位部を閉塞バルーンで閉塞した。その後、タンパク質分解酵素を血栓の前または直接に注入し、その溶解を確認した。この設定では、心臓や脳では露出時間はそれほど重要ではなく、タンパク質分解酵素は少なくとも3分間作用することができた。このような場合のタンパク質分解酵素の典型的な使用方法は、バルーンカテーテルを用いて、膨張およびタンパク質分解酵素の送り込み(デリバリー)を実施することである。
下肢の血栓溶解療法のために選択された動物モデル(家畜のブタ)は、人間の一般的な状態を模倣している。ブタは体重が70kgあり、血管の組織構造も似ているので,既存の機器や薬剤を使用することができる。
再血栓症を防ぐためには、内皮が完全に治癒するまで抗血栓療法を行うべきである。タンパク質分解酵素混合物が血液凝固(hemocoagulation)に影響を与えないことは、以前のインビトロ、そして今回のさらなるインビボ(ドップラー付き超音波検査および血管造影検査)で証明されている。上記の実施形態で説明したように、再血栓症を回避するために、血栓溶解性オキアミ酵素を、リシニ・ラセミチ・アセチルサリチラーゼなどの抗凝集性化合物と組み合わせてもよいことが判明している。このような組み合わせを用いることにより、抗凝集作用が確保される。
PTCAやステント留置では、血管(主に層内膜(stratum
intimae))に損傷を与える。このような大きな表面(2-5cm2)で内皮の被覆が欠如すると、迅速な血栓形成が生じる。そのような状態を避けるために、多くの場合、二重抗凝集剤治療(ACP+クロピドグレル)が行われる。しかし、この方法は出血などの重篤な副作用を引き起こす可能性がある。
この研究では、ヒトとの類似性(生化学的、血液学的、免疫学的)から動物(ブタ)モデルを選択した。この研究は、EUの規制に従って、約70kgのブタ3匹で行われた。
Claims (20)
- 血栓症の治療を必要とする患者において血栓症を治療するための方法であって、
タンパク質分解酵素またはタンパク質分解酵素の混合物を含む医薬組成物を前記患者に投与する工程と、
第1のバルーンカテーテルを前記患者に投与する工程と、を備えた方法。 - 請求項1に記載の方法において、前記第1のバルーンカテーテルは、バルーン、第1のチューブ、および第2のチューブを備え、前記第1および第2のチューブは、それぞれ、前記バルーンの同じ側に位置する入口を有し、
前記第1のチューブは、前記バルーンを膨張させるために前記バルーンの内側に出口を有し、前記第2のチューブは、前記バルーンと前記血栓との間に位置するように、前記入口から離間した前記バルーンの他端に位置する出口を有する、方法。 - 請求項1記載の方法において、第2のバルーンカテーテルを前記患者に投与する工程をさらに備えた方法。
- 請求項1記載の方法において、前記医薬組成物が、リシニ・ラセミチ・アセチルサリチラーゼをさらに含む方法。
- 請求項4記載の方法において、前記タンパク質分解酵素の混合物が、オキアミ酵素を含む方法。
- 患者における血栓症を治療する方法であって、
a)血栓を含有する血管を前記血栓の下流にて第1のバルーンカテーテルで遮断して、前記第1のバルーンカテーテルと前記血栓との間に小さな容積を形成する工程と、
b)前記容積をリンスする工程と、
c)前記血栓が溶解するまで前記容積内にオキアミ酵素溶液を投与する工程と、
d)随意に、前記血管にステントを適用する工程と、
e)随意に、タンパク質分解酵素またはタンパク質分解酵素の混合物、リシニ・ラセミチ・アセチルサリチラーゼ、および薬学的に許容される賦形剤を含む医薬組成物を前記患者に適用する工程と、を備えた方法。 - 請求項6記載の方法において、前記工程a)において、前記血管は、前記血栓の上流および下流で遮断され、前記第1のバルーンカテーテルと前記血栓の間、および第2のバルーンカテーテルと前記血栓との間に、2つの小さな容積を形成し、
前記工程c)において、前記血栓が溶解するまで前記2つの小さな容積にオキアミ酵素溶液を投与し、
前記血栓が溶解した後、前記2つのバルーンカテーテルの間の前記2つの小さな容積を再びリンスする、方法。 - 請求項6記載の方法において、生理食塩水またはリンゲル液が、前記第1のバルーンカテーテルと前記血栓との間の前記容積をリンスするためのリンス剤である、方法。
- 請求項5記載の方法において、前記オキアミ酵素が、トリプシン様活性を有する3つのセリンプロテアーゼおよびキモトリプシン様活性を有する1つのセリンプロテアーゼを含む、方法。
- 請求項5記載の方法において、前記オキアミ酵素が、4つのエキソペプチダーゼを含み、前記4つのエキソペプチダーゼは、2つのカルボキシペプチダーゼAおよび2つのカルボキシペプチダーゼBを含む、方法。
- 請求項9記載の方法において、トリプシン様活性を有する前記3つのセリンプロテアーゼが、2つのエンド/エキソペプチダーゼおよび1つのエンドペプチダーゼを含む、方法。
- 請求項5記載の方法において、前記オキアミ酵素が、動脈壁上のプラークを減少させる、方法。
- タンパク質分解酵素またはタンパク質分解酵素の混合物、リシニ・ラセミチ・アセチルサリチラーゼ、および薬学的に許容される賦形剤を含む、医薬組成物。
- 請求項13記載の医薬組成物において、前記タンパク質分解酵素の混合物がオキアミ酵素を含む、医薬組成物。
- 請求項13記載の医薬組成物において、約900mgのリシニ・ラセミチ・アセチルサリチラーゼを含む、医薬組成物。
- 請求項14記載の医薬組成物において、約60ユニットのオキアミ酵素および約900mgのリシニ・ラセミチ・アセチルサリチラーゼを含む、医薬組成物。
- 請求項14記載の医薬組成物において、前記オキアミ酵素が、トリプシン様活性を有する前記3つのセリンプロテアーゼおよびキモトリプシン様活性を有する1つのセリンプロテアーゼを含む、医薬組成物。
- 請求項14記載の医薬組成物において、前記オキアミ酵素が、4つのエキソペプチダーゼを含む、医薬組成物。
- 請求項17記載の医薬組成物において、トリプシン様活性を有する前記3つのセリンプロテアーゼが、2つのエンド/エキソペプチダーゼおよび1つのエンドペプチダーゼを含む、医薬組成物。
- 請求項17記載の医薬組成物において、前記4つのエキソペプチダーゼが、2つのカルボキシペプチダーゼAおよび2つのカルボキシペプチダーゼBを含む、医薬組成物。
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- 2019-06-28 AU AU2019292557A patent/AU2019292557A1/en active Pending
- 2019-06-28 CN CN201980057015.2A patent/CN112638289A/zh active Pending
- 2019-06-28 CA CA3110779A patent/CA3110779A1/en active Pending
- 2019-06-28 BR BR112021004809-0A patent/BR112021004809A2/pt not_active Application Discontinuation
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EA202190494A1 (ru) | 2021-12-09 |
CN112638289A (zh) | 2021-04-09 |
CA3110779A1 (en) | 2020-01-02 |
CR20210059A (es) | 2021-12-23 |
BR112021004809A2 (pt) | 2021-06-22 |
AU2019292557A1 (en) | 2021-04-01 |
EP3813687A1 (en) | 2021-05-05 |
EP3813687A4 (en) | 2022-03-23 |
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