JP6704950B2 - ポリマーの治療用組成物 - Google Patents
ポリマーの治療用組成物 Download PDFInfo
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Description
ヨウ素含有モノマーの調製
A.トルエン250mLに、2,4,6−トリヨードフェノール15g、3,6−ジメチル−1,4−ジオキサン−2,5−ジオン22.9g及び第一スズオクトエート25μLを加えた。その溶液を18時間還流させた。その溶液を25℃に冷却した後、トルエン50mLに溶解した塩化アクリロイル3mL及びトリエチルアミン5.2mLを加えた。その混合物を5時間撹拌し、ろ過し、水で洗浄し、真空下で乾燥させた。
ガドリニウム含有モノマーの調製
ジメチルホルムアミド50mLに、ガドリニウムジエチレントリアミン五酢酸17.5g、3,6−ジメチル−1,4−ジオキサン−2,5−ジオン13g及び第一スズオクトエート25μLを加えた。その溶液を18時間還流させた。その溶液を10℃に冷却した後、ジメチルホルムアミド50mLに溶解した塩化アクリロイル3mL及びトリエチルアミン5.2mLを加えた。その混合物を18時間撹拌し、ろ過し、その溶媒を除去した。
他のヨウ素含有モノマーの調製
メタノール400mLに、ジアトリゾ酸104g(170mmol)を加え、次いで炭酸セシウム28g(65mmol)を加えた。45分間撹拌した後、メタノールを真空中で除去し、その固体をジエチルエーテル500mL中に懸濁させた。次いで、固体をブフナー漏斗上に集めて、真空中で乾燥させ、ジアトリゾ酸セシウム120g(95%)を得た。
ヨウ素含有ポリマーの調製
A.ジメチルスルホキシド3mLに、平均5つのラクチド単位で伸長され且つアクリレートでキャップしたトリヨードフェノール鎖1.8g、ヒドロキシエチルメタクリレート0.2g及びアゾビスイソブチロニトリル10mgを加えた。全成分を完全に溶解させ、その溶液を80℃にて4時間置いた。室温に冷却した後、エチルエーテル中での沈殿によってポリマーを回収し、真空下で乾燥させた。
ヨウ素含有ポリマーの調製
ジメチルホルムアミド14gに、実施例3で調製されたヨウ素含有モノマー8g、ヒドロキシエチルメタクリレート1.4g及びアゾビスイソブチロニトリル47mgを加えた。全成分を完全に溶解し、その溶液を80℃にて48時間置いた。室温に冷却した後、エチルエーテル中での沈殿によってポリマーを回収し、真空下で乾燥させた。
ヨウ素含有ポリマーの調製
n−メチル−2−ピロリドン6gに、実施例3で調製されたヨウ素含有モノマー1.7g、アミノプロピルメタクリルアミド0.25g及びアゾビスイソブチロニトリル10mgを加えた。全成分を完全に溶解し、その溶液を80℃にて8時間置いた。室温に冷却した後、エチルエーテル中での沈殿によってポリマーを回収し、真空下で乾燥させた。
沈殿
ヨウ素含有ポリマーをそれぞれの溶媒に溶解した。例えば、水溶性ポリマーをpH3の緩衝溶液に溶解し、有機溶解性のヨウ素含有ポリマーをジメチルスルホキシドに溶解した。その溶液を0.1Mのリン酸緩衝生理食塩水中に分注した。形成された沈殿物を1〜5にランク付けした。1が最も粘着性が低く、5が最も粘着性が高い。
流れ
流れモデルにおいて、0.017’’I.D.マイクロカテーテルを通して液体塞栓性製剤を送達した。粘着性、注入圧力、栓の形成及び沈殿速度について、視覚的に製剤を評価した。沈殿速度をゆっくり、中間及び速いにランク付けした。他のすべてを1〜5にランク付けした。1が最も望ましくなく、5が最も望ましい。
液体塞栓性製剤の調製
ジメチルスルホキシド9gに実施例3のポリマー1gを加えた。次いで、その液体塞栓性製剤をバイアル中にアリコートして蓋をした。そのバイアルに121℃で15分間オートクレーブ処理をした。
ポリマーのヨウ素含有量の滴定
実施例1及び3に記載される技術を用いて、表中に記載されるポリマーを調製した。誘導結合プラズマ−質量分析技術を用いてポリマーのヨウ素含有量を調べた。
液体塞栓性デバイスのインビボでの評価−ウサギの腎臓
実施例4、5及び6の技術に従って調製された液体塞栓性製剤をウサギの腎臓の塞栓に利用した。処置前(図1)と処置後(図2)双方の腎臓において血管造影法の閉塞が得られた。図に示されるように、腎臓への血流は、実質的に枯渇しており、図2において塞栓性ポリマーに置換されている。図2の血管は血管造影図において見ることができる。
液体塞栓性デバイスのCT評価
実施例1、2及び3の技術に従って調製された液体塞栓性製剤をウサギの腎血管系の塞栓に利用した。処置の終わりに、CTスキャナーを用いてウサギを画像化した。図1における腎臓への血流を図3におけるCTで見える塞栓性ポリマーで満たした血管系と比較すると、図1の血流が図3において塞栓性ポリマーに置換されたことが明らかである。
液体塞栓性デバイスのMR評価
実施例1、2及び3の技術に従って調製された液体塞栓性製剤をウサギの腎血管系の塞栓に利用した。処置の終わりに、MRスキャナーを用いてウサギを画像化した。図4は、血管造影図で見える液体塞栓性ポリマーによる血流の目に見える置換を含む腎臓の血管造影図を示す。図5は、MR血管造影法下での塞栓性ポリマーの視覚性を示す。
[付記1]
可視化剤への生分解性結合を有する生体適合性ポリマーと、
非生理溶液と、
を含むポリマー組成物であって、
前記生体適合性ポリマーが、前記非生理溶液には溶解するが生理溶液には溶解しない、ポリマー組成物。
前記生分解性結合が、配列番号1、配列番号2、配列番号3、配列番号4、配列番号5、配列番号6、配列番号7、配列番号8、配列番号9、配列番号10、配列番号11、又は配列番号12である、付記1に記載のポリマー組成物。
前記生分解性結合がエステル又はポリエステルである、付記1に記載のポリマー組成物。
前記可視化剤がヨウ素化合物である、付記1〜3のいずれか一つに記載のポリマー組成物。
前記生体適合性ポリマーが2種以上の異なるモノマーの反応生成物である、付記1〜4のいずれか一つに記載のポリマー組成物。
前記非生理溶液が水混和性である、付記1〜5のいずれか一つに記載のポリマー組成物。
水混和性の溶媒の濃度が約1%〜約25%である、付記6に記載のポリマー組成物。
イオン性の基を含むモノマーを更に含む、付記1〜7のいずれか一つに記載のポリマー組成物。
前記非生理溶液のpHが約5未満であるか又は約8より大きい、付記1〜7のいずれか一つに記載のポリマー組成物。
前記生体適合性ポリマーの濃度が約1%w/w〜約50%w/wである、付記1〜9のいずれか一つに記載のポリマー組成物。
約75%〜約98%の2−オキソ−2−(1−オキソ−1−(1−オキソ−1−(2,4,6−トリヨードフェノキシ)プロパン−2−イルオキシ)プロパン−2−イルオキシ)エトキシ)エチルアクリレートと、約2%〜約25%のヒドロキシエチルメタクリレートと、約1%未満のアゾビスイソブチロニトリルとの反応生成物を含む、付記1〜10のいずれか一つに記載のポリマー組成物。
約85%〜約98%の1−((2−(メタクリロイルオキシ)エトキシ)カルボニルオキシ)エチル3,5−ジアセトアミド−2,4,6−トリヨードベンゾエートと、約2%〜約15%のヒドロキシエチルメタクリレートと、約1%未満のアゾビスイソブチロニトリルとの反応生成物を含む、付記1〜11のいずれか一つに記載のポリマー組成物。
第一の非生理水溶液と、
可視化剤への生分解性結合を有する、濃度が約1%〜50%w/wである、生体適合性ポリマーであって、第一の水溶液には溶解するが第二の生理水溶液には溶解しない、生体適合性ポリマーと、
を含む、血管の欠陥を埋めるための組成物。
送達デバイスを通して、生理環境中に、可視化剤への生分解性結合を有する生体適合性ポリマーと水混和性溶媒とを含む液体塞栓性組成物を注入することを含み、
前記生体適合性ポリマーが生理環境に達すると沈殿して血管障害を治療する、
血管障害を治療する方法。
前記生分解性結合が、配列番号1、配列番号2、配列番号3、配列番号4、配列番号5、配列番号6、配列番号7、配列番号8、配列番号9、配列番号10、配列番号11、又は配列番号12である、付記14に記載の方法。
前記生分解性結合がエステル又はポリエステルである、付記14又は15に記載の方法。
前記可視化剤がヨウ素化合物である、付記14〜16のいずれか一つに記載の方法。
前記生体適合性ポリマーが2種以上の異なるモノマーの反応生成物である、付記14〜17のいずれか一つに記載の方法。
前記水混和性溶媒の濃度が約1%〜約25%である、付記14〜18のいずれか一つに記載の方法。
前記生体適合性ポリマーが、少なくとも一種のイオン性の官能基を有するモノマーを含む、付記14〜19のいずれか一つに記載の方法。
前記水混和性溶媒のpHが約5未満である、付記14〜20のいずれか一つに記載の方法。
前記水混和性溶媒のpHが約8より大きい、付記12〜18のいずれか一つに記載の方法。
前記生体適合性ポリマーの濃度が約1%w/w〜約50%w/wである、付記14〜22のいずれか一つに記載の方法。
血管障害を治療する方法であって、
可視化剤への生分解性結合を有する生体適合性ポリマーと水混和性溶媒とを含む液体塞栓性組成物であって、前記生体適合性ポリマーが前記水混和性溶媒には溶解するが生理環境には溶解しない液体塞栓性組成物を準備することと、
送達デバイスを血管中に挿入することと、
治療が必要である領域に前記送達デバイスを導くことと、
前記送達デバイスを通して、血管中の治療が必要である領域に、液体塞栓性ポリマー組成物を注入し、それにより、前記生体適合性ポリマーを速やかに沈殿させて固体のポリマー塊を形成させることと、
血管の状態を治療することと、
を含む、方法。
付記14〜24に従う、血管障害を治療する方法。
ここに記載される液体塞栓性ポリマーを作る方法。
ここに記載される液体塞栓性ポリマー溶液を作る方法。
ここに記載される液体塞栓性組成物。
ここに記載されるポリマー組成物。
Claims (13)
- 可視化剤への生分解性結合を有する生体適合性ポリマーと、
非生理溶液と、
を含むポリマー組成物を含有し、
前記生体適合性ポリマーは、前記非生理溶液には溶解するが生理溶液には溶解せず、
前記生体適合性ポリマーは、
2−オキソ−2−(1−オキソ−1−(1−オキソ−1−(2,4,6−トリヨードフェノキシ)プロパン−2−イルオキシ)プロパン−2−イルオキシ)エトキシ)エチルアクリレートである第一のモノマーと、ヒドロキシエチルメタクリレートモノマーである第二のモノマーと、開始剤と、を含むモノマーの反応生成物、又は、
1−((2−(メタクリロイルオキシ)エトキシ)カルボニルオキシ)エチル3,5−ジアセトアミド−2,4,6−トリヨードベンゾエートである第一のモノマーと、ヒドロキシエチルメタクリレートモノマーもしくはN−(3−アミノプロピル)メタクリルアミド塩酸塩である第二のモノマーと、開始剤と、を含むモノマーの反応生成物、
を含有する、
血管障害を治療する為の医薬品組成物。 - 前記生分解性結合が、配列番号1、配列番号2、配列番号3、配列番号4、配列番号5、配列番号6、配列番号7、配列番号8、配列番号9、配列番号10、配列番号11、配列番号12又は配列番号13である、請求項1に記載の医薬品組成物。
- 前記生分解性結合がエステル又はポリエステルである、請求項1に記載の医薬品組成物。
- 前記非生理溶液が水混和性である、請求項1〜3のいずれか1項に記載の医薬品組成物。
- 前記水混和性の溶媒の濃度が約1%〜約25%である、請求項4に記載の医薬品組成物。
- イオン性の基を含むモノマーを更に含む、請求項1〜5のいずれか1項に記載の医薬品組成物。
- 前記非生理溶液のpHが約5未満であるか又は約8より大きい、請求項1〜6のいずれか1項に記載の医薬品組成物。
- 前記生体適合性ポリマーの濃度が約1%w/w〜約50%w/wである、請求項1〜7のいずれか1項に記載の医薬品組成物。
- 前記非生理溶液は、ジメチルホルムアミドである、請求項1〜8のいずれか1項に記載の医薬品組成物。
- 前記非生理溶液は、ジメチルスルホキシドである、請求項1〜8のいずれか1項に記載の医薬品組成物。
- 前記生体適合性ポリマーは、2−オキソ−2−(1−オキソ−1−(1−オキソ−1−(2,4,6−トリヨードフェノキシ)プロパン−2−イルオキシ)プロパン−2−イルオキシ)エトキシ)エチルアクリレートである第一のモノマーと、ヒドロキシエチルメタクリレートモノマーである第二のモノマーと、開始剤と、を含むモノマーの反応生成物を含有する、
請求項1〜10のいずれか1項に記載の医薬品組成物。 - 約75%〜約98%の2−オキソ−2−(1−オキソ−1−(1−オキソ−1−(2,4,6−トリヨードフェノキシ)プロパン−2−イルオキシ)プロパン−2−イルオキシ)エトキシ)エチルアクリレートと、約2%〜約25%のヒドロキシエチルメタクリレートと、約1%未満のアゾビスイソブチロニトリルとの反応生成物を含有する、請求項1〜11のいずれか1項に記載の医薬品組成物。
- 約85%〜約98%の1−((2−(メタクリロイルオキシ)エトキシ)カルボニルオキシ)エチル3,5−ジアセトアミド−2,4,6−トリヨードベンゾエートと、約2%〜約15%のヒドロキシエチルメタクリレートと、約1%未満のアゾビスイソブチロニトリルとの反応生成物を含有する、請求項1〜10のいずれか1項に記載の医薬品組成物。
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