JP4192093B2 - 慢性皮膚潰瘍の治癒を促進する方法 - Google Patents
慢性皮膚潰瘍の治癒を促進する方法 Download PDFInfo
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- JP4192093B2 JP4192093B2 JP2003518575A JP2003518575A JP4192093B2 JP 4192093 B2 JP4192093 B2 JP 4192093B2 JP 2003518575 A JP2003518575 A JP 2003518575A JP 2003518575 A JP2003518575 A JP 2003518575A JP 4192093 B2 JP4192093 B2 JP 4192093B2
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Description
本発明は、国立衛生研究所からの助成金1R01-GM47572およびR44-DK53580により、全体または一部援助された。政府は本発明において一定の権利を有する。
本願は、2001年7月27日に出願された米国特許仮出願第60/308,198号(その全教示が参考として本明細書に援用される)の利益を主張する。
真皮皮膚潰瘍は治療が特に困難である創傷の例である。なぜならば、この潰瘍は治癒に耐性があり、その結果しばしば慢性創傷となる。慢性真皮皮膚潰瘍の例としては、静脈疾患から生じたもの(静脈うっ滞性潰瘍)、過度の圧力(褥瘡性潰瘍)、動脈性潰瘍および糖尿病性潰瘍が挙げられる。
非タンパク質分解的に活性化されたトロンビンレセプターのアゴニストが糖尿病性潰瘍の治癒速度を加速するのに有効であることがここに見出された。例えば、トロンビンペプチド誘導体TP508(1.0μgまたは10.0μgの用量で週2回局所投与される)は、糖尿病性潰瘍が治癒する速度を増加し、潰瘍の100%終結を経験する患者の割合を増加した。この発見に基づいて、慢性皮膚潰瘍の治癒を促進または加速する方法が本発明に開示される。
真皮皮膚潰瘍とは、治癒プロセス中の欠陥、血管不全または圧力によって正常な治癒に失敗した組織の表面損失により生じる皮膚の損傷をいう。本発明の方法により処置され得る真皮皮膚潰瘍としては、褥瘡性潰瘍、糖尿病性潰瘍、静脈うっ滞性潰瘍および動脈性潰瘍が挙げられる。褥瘡性潰瘍とは、長期間皮膚領域にはたらいた圧力から生じる慢性潰瘍をいう。このタイプの創傷は、しばしばとこずれ(bedsore)または褥瘡(pressure sore)と呼ばれる。静脈うっ滞性潰瘍は、欠損血管からの血液または他の体液の停滞から生じる。動脈性潰瘍とは血流が充分にない動脈の周囲の領域における壊死皮膚をいう。
方法論 − 試験計画
本試験は、合成トロンビンペプチドTP508を慢性糖尿病潰瘍の治癒の加速について評価する複数の施設での無作為二重盲検3群(three-arm)フェーズIIaパイロット試験とした。患者を3つの局所処置群:1マイクログラムのTP508含有生理食塩水を週に2回塗布、10マイクログラムのTP508含有生理食塩水を週に2回塗布、または生理食塩水プラセボを週に2回塗布、の1つに無作為に割り当てた。すべての患者は、初期シャープ(sharp)デブリドマン、創傷洗浄、創傷包帯および創傷圧迫解除(offloading)からなる標準的な糖尿病潰瘍治療の治療計画を受けた。20週までか、または創傷がふさがるまでか、いずれか早い方まで創傷を週に2回評価した。患者が臨床的感染を発症するか、または創傷状態か有意に悪化した場合は、試験から除外した。各創傷評価の際(週に2回)に、創傷面積の測定のために創傷の周囲の輪郭を書き、創傷をデジタルカメラで撮影した。患者の登録時、5、10、15および20週に血液化学および血液学試験を行った。ラジオグラフィー評価を5週ごとに行い、下方の骨組成に対する影響を調べた。
本試験において30〜65歳の年齢範囲の男女を参加させた。妊娠の可能性のある女性は、許容可能な産児制限方法を使用しなければならず、試験に入る前に、妊娠について尿検査を受けた。本試験に登録するためには、血糖およびHgbA1Cにより患者の糖尿病病理学を臨床的に証明しなければばらなかったが、糖尿病症状以外は患者は適度に良好な健康状態でなければならなかった。処置対象の潰瘍(試験腫瘍)は、膝蓋骨の下、ワグナーグレード1(創傷は表皮を貫通して真皮に侵入していなければならない)、グレード2または軽度グレード3から骨膜(骨または腱を巻き込まず)に位置していなければならなかった。試験潰瘍は、直径1.0cm(面積0.9cm2)〜直径7.0cm(面積約38.5cm2)でなければならなかった。また、試験潰瘍は、その時点で治癒しないまま最低8週〜最大2年、存在していたものでなければならなかった。患者のベースラインでの創傷酸素分圧(oxygen tension)(TcPO2)測定値は、加熱酸素センサーでの測定により20mmHg以上でなければならなかった。また、患者は、試験の指示を理解し、従い、処置計画および任意の指図された創傷圧迫解除に従い、インフォームドコンセントに同意することができることが求められた。
試験は、各処置群あたり20名、合計60名の登録患者で計画された。合計60名の患者を登録し、本試験にて処置した。これらの60名の患者のうち、12名は早々に試験を中断した。4名の患者は創傷の感染のため中断し、2名は骨髄炎のため中断し、1名は切断のため中断し、1名は心筋梗塞のため中断し、2名は非医学的理由により試験から除外し、1名は創傷悪化のため、1名は許容され得ない投薬を受けていた。試験中断の原因はいずれも薬剤使用とは関係していなかった。
第1有効性終点は、完全創傷閉鎖を達成した患者の割合とした。完全創傷閉鎖は、臨床医による視診によって調べたとき、排膿および感染のない100%上皮形成と定義した。処置群間の割合の差を比較した。第2終点としては、試験創傷の100%閉鎖までの時間、80%および50%創傷閉鎖までの時間、ならびに3、5、10、15および20週での創傷閉鎖の量(ベースラインの創傷サイズからの変化の割合として)を含めた。
有効性終点をより良好に調べるために3つの異なる患者解析群を規定した。治療意図(Intent-To-Treat)(ITT)群は、試験薬物を受けた患者60名すべてを含み、主に安全性評価のために使用された。プロトコルに従う(Per-Protocol)群は、該プロトコルにより最も高いコンプライアンスを保証することが意図される所定の組の基準を満たした40名の患者を含めた。有効群(Efficacy Group)は、創傷治癒の正確な評価を可能にするために最も直接的に関連するようにアンブラインディング(unblinding)前に選択された基準を満たす46名の患者を含めた。第1および第2終点の結果を各患者群について記載する。第1終点での処置効果について同様の正の用量応答傾向がすべての処置群について見られ、効果はプロトコルに従う群において最も顕著であった。
第1有効性終点は、20週間以内に完全創傷閉鎖を達成した患者の割合とした。以下の表は、3つの解析集団について閉鎖の第1有効性終点の結果をまとめている。
第2終点は、100%閉鎖までの時間、80%閉鎖までの時間、50%閉鎖までの時間、および3、5、10、15および20週でのベースラインの創傷サイズからの変化の割合として創傷閉鎖の量を含む。Kaplan-Meier生存解析技術を用いて時間対事象終点を調べた。
治癒の加速を反映するメジアン治癒期間を示す。
Claims (4)
- 単独でまたは抗菌薬、消毒薬、抗生物質、鎮痛薬もしくは抗炎症薬との組み合わせで使用される、アミノ酸配列 H-Ala-Gly-Tyr-Lys-Pro-Asp-Glu-Gly-Lys-Arg-Gly-Asp-Ala-Cys-Glu-Gly-Asp-Ser-Gly-Gly-Pro-Phe-Val-NH 2 (配列番号:6)からなるペプチドを含有してなる、被験体における慢性皮膚潰瘍の治癒を促進するための医薬組成物。
- 慢性皮膚潰瘍が糖尿病性潰瘍、褥瘡性潰瘍、静脈うっ滞性潰瘍または動脈性潰瘍である請求項1記載の医薬組成物。
- 被験体がコンパニオン動物、農場動物または実験動物である請求項1または2記載の医薬組成物。
- 被験体がヒトである請求項1または2記載の医薬組成物。
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US30819801P | 2001-07-27 | 2001-07-27 | |
PCT/US2002/001151 WO2003013569A2 (en) | 2001-07-27 | 2002-01-16 | Use of thrombin-derived peptides for the therapy of chronic dermal ulcers |
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JP2004538320A JP2004538320A (ja) | 2004-12-24 |
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EP (1) | EP1414487B1 (ja) |
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WO2003013569A2 (en) * | 2001-07-27 | 2003-02-20 | The Board Of Regents, The University Of Texas System | Use of thrombin-derived peptides for the therapy of chronic dermal ulcers |
AU2003256343B2 (en) * | 2002-07-02 | 2006-12-21 | Orthologic Corp. | Thrombin peptide derivatives |
EP1539800B1 (en) * | 2002-07-02 | 2007-05-23 | Orthologic Corp. | Thrombin peptide derivative dimers |
DE602004005564T2 (de) | 2003-12-31 | 2007-12-13 | Orthologic Corp., Tempe | Pharmazeutische Zusammensetzung für Thrombinpeptidderivaten |
EP1934262A1 (en) * | 2005-09-16 | 2008-06-25 | The Board Of Regents, The University Of Texas System | Antibodies to complementary peptides of thrombin or portions thereof |
WO2008124172A1 (en) * | 2007-04-10 | 2008-10-16 | The Board Of Regents, The University Of Texas System | Combination therapy for chronic dermal ulcers |
EP2280722A2 (en) * | 2008-03-26 | 2011-02-09 | Orthologic Corp. | Method of treating degenerative diseases |
CA2722621A1 (en) * | 2008-03-26 | 2009-10-01 | Orthologic Corp. | Thrombin derived peptides for smooth muscle relaxation |
CA2719940A1 (en) * | 2008-03-26 | 2009-11-26 | Orthologic Corp. | Methods for treating acute myocardial infarction |
AU2009229402A1 (en) * | 2008-03-26 | 2009-10-01 | Orthologic Corp. | Method of treating peripheral arterial disease |
GB0916576D0 (en) | 2009-09-22 | 2009-10-28 | Malmsten Nils M | Polypeptides and uses thereof |
EP2538874A4 (en) * | 2010-02-24 | 2017-06-21 | Syneron Medical Ltd. | A body contouring apparatus |
US8806615B2 (en) | 2010-11-04 | 2014-08-12 | Mcafee, Inc. | System and method for protecting specified data combinations |
US10220078B2 (en) | 2014-06-11 | 2019-03-05 | The Board Of Regents Of The University Of Texas System | Methods of using thrombin derivatives to treat medulloblastoma |
CZ308845B6 (cs) * | 2019-01-21 | 2021-07-07 | Globetech Innovation S.R.O | Farmaceutická směs topicky hojivých peptidových složek pro použití k topické léčbě kožních defektů a/nebo k topickému hojení ran |
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US5352664A (en) * | 1986-10-31 | 1994-10-04 | Board Of Regents, The University Of Texas System | Thrombin derived polypeptides; compositions and methods for use |
WO1996040033A1 (en) | 1995-06-07 | 1996-12-19 | Clarion Pharmaceuticals Inc. | Non-biological patch for hemostasis |
GB9930768D0 (en) * | 1999-12-29 | 2000-02-16 | Pfizer Ltd | Composition |
WO2003013569A2 (en) * | 2001-07-27 | 2003-02-20 | The Board Of Regents, The University Of Texas System | Use of thrombin-derived peptides for the therapy of chronic dermal ulcers |
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HK1065719A1 (en) | 2005-03-24 |
JP2004538320A (ja) | 2004-12-24 |
DK1414487T3 (da) | 2006-10-09 |
US20040209819A1 (en) | 2004-10-21 |
EP1414487A2 (en) | 2004-05-06 |
US7049294B2 (en) | 2006-05-23 |
CN1556711A (zh) | 2004-12-22 |
US7378500B2 (en) | 2008-05-27 |
DE60212143D1 (de) | 2006-07-20 |
US20060241049A1 (en) | 2006-10-26 |
CA2455756A1 (en) | 2003-02-20 |
US7833982B2 (en) | 2010-11-16 |
ATE328606T1 (de) | 2006-06-15 |
DE60212143T2 (de) | 2007-04-12 |
ES2271216T3 (es) | 2007-04-16 |
EP1414487B1 (en) | 2006-06-07 |
CA2455756C (en) | 2013-04-02 |
AU2002236768B2 (en) | 2006-06-08 |
CN100509055C (zh) | 2009-07-08 |
US20090029923A1 (en) | 2009-01-29 |
WO2003013569A3 (en) | 2003-12-11 |
WO2003013569A2 (en) | 2003-02-20 |
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