JP4827727B2 - 低分子量及び高分子量の多糖の架橋;注射用単相ヒドロゲルの調製;多糖及び得られたヒドロゲル - Google Patents
低分子量及び高分子量の多糖の架橋;注射用単相ヒドロゲルの調製;多糖及び得られたヒドロゲル Download PDFInfo
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- A61K9/0019—Injectable compositions; Intramuscular, intravenous, arterial, subcutaneous administration; Compositions to be administered through the skin in an invasive manner
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- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/14—Macromolecular materials
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- A—HUMAN NECESSITIES
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- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
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Description
−多糖及びその誘導体から選択される少なくとも一種の重合体を架橋するための新規方法;
−少なくとも一種の上記重合体の注射用単相ヒドロゲルを調製するための方法;並びに、
−上記各々の方法によってそれぞれ得られる架橋型重合体及び注射用単相ヒドロゲル
に関する。
−単相であること;
−従来技術による物質よりも物性及びレマネンスが良好であること;
−従来と同程度の又は改善された注射特性を、従来の注射器具を使用して従来の注射力により実現可能であること。
多糖及びその誘導体から選択される少なくとも一種の重合体を架橋するための方法であって、
水性溶媒中で、有効量かつ非過剰量の少なくとも一種の架橋剤を使用して実施する
ことを特徴とする方法
に関する。この方法は、少なくとも一種の低分子量重合体及び少なくとも一種の高分子量重合体を含む混合物を対象に実施するという点で改善されている。
−少なくとも一種の低分子量m(m≦9.9×105Da、有利には104Da≦m≦9.9×105Da)のヒアルロン酸塩;及び、
−少なくとも一種の高分子量M(M≧106Da、有利には106Da≦M≦108Da、非常に有利には1.1×106Da≦M≦5×106Da)のヒアルロン酸塩:
上記低分子量及び高分子量の塩は、有利には同じ性質を有し、非常に有利にはヒアルロン酸ナトリウム(NaHA)からなる。
ヒアルロン酸ナトリウム(NaHA)の固有粘度(ml/g)を、NaHAについてのヨーロッパ薬局方(2.2.9)に従って、ウベローデ毛細管式粘度計を使用することにより測定する。
NaHAに基づくゲルの注射特性を、標準的な注射器に入れたゲルを27G(1/2)の針から速度12.5mm/分で放出するのに要する力(ニュートン、N)の測定により決定する。上記試験は、Verstatet(R)引張装置(Mecmesin社販売)を使用して実施した。
ゲルの粘稠度は、圧力調節式レオメーター(TA Instruments社、Carrimed CSL 500)及び4cm2oの円錐平板系を使用して、一定変数域で、周波数(0.05〜10Hz)に対する弾性率(G’)及び粘性率(G’’)のレオロジー測定による25℃での値である。このレオメーターは、定期的に検査及び調整する。架橋したゲルが分解すると粘稠度が変化する。粘稠度は、周波数1Hzにおけるパラメーター「タンジェントデルタ(tan.Δ=G’’/G’)」の経時的な値の増大によって測定される。ゲルは、温度93℃に加熱すると分解する。この温度でtan.Δ=0.65(ゲルが分解した状態に相当)となった時間を測定する。任意に、実施例1のゲルのレマネンス率を1と設定した(上記時間に相当)。他のゲルのレマネンス率の値は相対値である。
(単相)
顕微鏡観察による外観:明瞭な液相はない(ゲルが微細に破砕されてファセット状になっている)。
肉眼観察による外観:柔軟で容易に流動する。
(二相)
顕微鏡観察による外観:ゲル断片が低粘度液体媒体中に浸漬された状態。
肉眼観察による外観:「ピューレ状」非常に容易に破砕され、ゲルの凝集はなく、容易に流動しない。
固有粘度2800ml/gで水分量8.7%のヒアルロン酸ナトリウム(NaHA)繊維3.5gを量り取り、0.25NのNaOH25.6gを添加する。スパチュラを使用して手で標準的に均質化することにより、2時間かけて繊維を水和させる。1,4−ブタンジオールジグリシジルエーテル(BDDE)溶液0.96gを0.25N水酸化ナトリウム溶液中に1/5に希釈したものを反応媒体中に添加し、これを15分間機械的に均質化した後、50℃±1℃に自動温度調節した浴中に浸漬する。
R=[BDDE]0/[NaHA]0=6%;[NaHA]i=105mg/g
滅菌後の注射力:25N
ヒドロゲルのレマネンス率:1.0
単相ヒドロゲル
固有粘度600ml/gで水分量5.5%のヒアルロン酸ナトリウム(NaHA)繊維1.56gを量り取り、0.25NのNaOH7.15gを添加する。スパチュラを使用して手で標準的に2時間かけて均質化することにより、繊維を水和させる。1,4−ブタンジオールジグリシジルエーテル(BDDE)溶液0.31gを0.25N水酸化ナトリウム溶液中に1/5に希釈したものを反応媒体中に添加し、これを15分間機械的に均質化した後、50℃±1℃に自動温度調節した浴中に浸漬する。
R=[BDDE]0/[NaHA]0=6.8%;[NaHA]i=174mg/g
滅菌後の注射力:24N
ヒドロゲルのレマネンス率:6.0
二相ヒドロゲル
固有粘度600ml/gで水分量5.5%のヒアルロン酸ナトリウム(NaHA)繊維0.763g、及び、固有粘度2800ml/gで水分量9.3%のヒアルロン酸ナトリウム繊維0.237gを量り取る。混合物中における割合(重量):600/2800:77/23(w/w)。
R=[BDDE]0/[NaHA]0=7%;[NaHA]i=140mg/g;[NaHA]f=26mg/g
滅菌後の注射力:15N
ヒドロゲルのレマネンス率:3.6
単相ヒドロゲル
実施例3の実験を割合(重量)を変えて実施する。混合物中における割合(重量):600/2800:90/10(w/w)。
R[BDDE]0/[NaHA]0=6.5%;[NaHA]i=140mg/g;[NaHA]f=26mg/g
滅菌後の注射力:14N
ヒドロゲルのレマネンス率:7.7
単相ヒドロゲル
Tan.Δ=f(応力の周波数数)
Claims (13)
- 重合体を架橋するための方法であって、
(1)分子量10 4 Da以上で9.9×10 5 Da以下のヒアルロン酸ナトリウムを50重量%以上、及び、分子量1.1×10 6 Da以上で5×10 6 Da以下のヒアルロン酸ナトリウムを5重量%以上含む混合物を作成する工程、及び、
(2)前記混合物を、水性溶媒中で、有効量かつ非過剰量の1,4−ビス(2,3−エポキシプロポキシ)ブタンである架橋剤で架橋する工程
からなり、
工程(2)において、
架橋剤の有効量かつ非過剰量は、次の割合:
100×(前記架橋剤中の反応基の総数)/(含有重合体分子中の二糖単位の総数)
で定義される架橋度が理論上0.5〜70%である方法。 - 混合物の固有粘度が1900ml/g未満である
ことを特徴とする請求項1に記載の方法。 - 前記混合物は、分子量約3×105Daのヒアルロン酸ナトリウムを約90重量%、及び、分子量約3×106Daのヒアルロン酸ナトリウムを約10重量%含む
ことを特徴とする請求項1または2に記載の方法。 - 架橋度が理論上4〜50%である
ことを特徴とする請求項1〜3のいずれかに記載の方法。 - 多糖及びその誘導体から選択される少なくとも一種の架橋型重合体の注射用単相ヒドロゲルを調製する方法であって、
請求項1〜4のいずれかに記載の方法で架橋した混合物を、pH6.5〜7.5に緩衝した溶液中に配合することを含む
ことを特徴とする方法。 - 緩衝した溶液のpHが7〜7.4である
ことを特徴とする請求項5に記載の方法。 - 緩衝した溶液のpHが7.1〜7.3である
ことを特徴とする請求項5または6に記載の方法。 - 前記混合物を、中和して緩衝液に配合することを含む
ことを特徴とする請求項5〜7のいずれかに記載の方法。 - 前記混合物を、中和して、pH7.1〜7.3に緩衝した溶液中に、濃度10〜40mg/gで配合することを含む
ことを特徴とする請求項5〜8のいずれかに記載の方法。 - 前記混合物を、濃度20〜30mg/gで配合することを含む
ことを特徴とする請求項9に記載の方法。 - 請求項1〜4のいずれかに記載の方法により得られる架橋型重合体。
- 請求項5〜10のいずれかに記載の方法により得られる注射用単相ヒドロゲル。
- 分子量10 4 Da以上で9.9×10 5 Da以下のヒアルロン酸ナトリウム及び分子量1.1×10 6 Da以上で5×10 6 Da以下のヒアルロン酸ナトリウムを架橋した状態で含む
ことを特徴とする請求項12に記載の注射用単相ヒドロゲル。
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FR0304444A FR2861734B1 (fr) | 2003-04-10 | 2003-04-10 | Reticulation de polysaccharides de faible et forte masse moleculaire; preparation d'hydrogels monophasiques injectables; polysaccharides et hydrogels obtenus |
FR0304444 | 2003-04-10 | ||
PCT/FR2004/000870 WO2004092222A2 (fr) | 2003-04-10 | 2004-04-08 | Reticulation de polysaccharides de faible et forte masse moleculaire; preparation d'hydrogels monophasiques injectables; polysaccharides et hydrogels obtenus; |
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BR (1) | BRPI0409762B1 (ja) |
CA (1) | CA2521961C (ja) |
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- 2004-04-08 ES ES10181594.2T patent/ES2536564T3/es not_active Expired - Lifetime
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- 2004-04-08 WO PCT/FR2004/000870 patent/WO2004092222A2/fr active Application Filing
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2013
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US20210322460A1 (en) | 2021-10-21 |
US9062130B2 (en) | 2015-06-23 |
FR2861734A1 (fr) | 2005-05-06 |
US8338388B2 (en) | 2012-12-25 |
ES2536564T3 (es) | 2015-05-26 |
US20190022130A1 (en) | 2019-01-24 |
EP2289945B1 (fr) | 2015-03-04 |
EP1611160A2 (fr) | 2006-01-04 |
US7741476B2 (en) | 2010-06-22 |
US20060194758A1 (en) | 2006-08-31 |
US20150065701A1 (en) | 2015-03-05 |
WO2004092222A2 (fr) | 2004-10-28 |
US20120295870A1 (en) | 2012-11-22 |
US20160317571A1 (en) | 2016-11-03 |
EP2289945A1 (fr) | 2011-03-02 |
US10653716B2 (en) | 2020-05-19 |
US11045490B2 (en) | 2021-06-29 |
US20100226988A1 (en) | 2010-09-09 |
WO2004092222A3 (fr) | 2004-12-09 |
EP2868669A1 (fr) | 2015-05-06 |
BRPI0409762A (pt) | 2006-05-09 |
US8563532B2 (en) | 2013-10-22 |
US20140011990A1 (en) | 2014-01-09 |
US10080767B2 (en) | 2018-09-25 |
CA2521961C (en) | 2013-07-23 |
FR2861734B1 (fr) | 2006-04-14 |
US20200246375A1 (en) | 2020-08-06 |
CA2521961A1 (en) | 2004-10-28 |
BRPI0409762B1 (pt) | 2021-10-13 |
JP2006522851A (ja) | 2006-10-05 |
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