JP5879265B2 - 好酸球性食道炎を処置する方法 - Google Patents
好酸球性食道炎を処置する方法 Download PDFInfo
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Description
好酸球性食道炎(EE)は、好酸球を伴う食道の浸潤により特徴付けられる(1)。EEは、米国、スイス、及びオーストラリアにおける研究に基づくと、流行が増加している(2)。例えば、フィラデルフィア小児病院では1994年の2例から2003年の72例に35倍増加している(3)。
本発明は、EEを処置する新たな方法を提供する。より具体的には、本発明は、初めて、EEの効率的な免疫療法を皮膚経路を通じて達成することができることを示す。本発明は、本発明の皮膚パッチ装置の適用が、食道における好酸球の非常に実質的な減少ならびにEEの他の組織学的パターンの減少を誘発することを示す。
本発明は、皮膚免疫療法により被験者においてEEを処置するための方法に関する。
方法
試験デザイン
好酸球性食道炎(EE)を処置するためのEPITの実行可能性及び効力を、ピーナッツに感作されたマウスのモデルにおいて評価した。感作の期間後、動物を2群に分けた:処置されない(NT群)及び8週間の全持続期間にわたり、さらに記載される(EPIT)皮膚送達システム(EDS)を皮膚に使用することにより毎週処置される。対照群(C)は、また、未感作動物を用いて構成された。血液を、実験の開始時及び終了時での分析(ピーナッツアレルゲンを用いた経口攻撃後の組織学的分析と一緒に)のために試料採取した。
Charles River Laboratories(France)から購入した4週齢の雌BALB/cマウス(n=30)を、ピーナッツタンパク質に感作させた。ピーナッツタンパク質への感作のマウスモデルとしてのBALB/cマウスの使用が、Adel-Patient et al, 2005に記載された。このモデルは、IgEの微細な特異性及び攻撃時にアレルギーのヒトにおいて観察される症状を再現するはずである。全ての実験が、動物愛護に関するEuropean Community規則に従って、French Veterinary Servicesの許可92−305で実施された。
20匹のBALB/cマウスが、10μgのコレラ毒素(CT)と混合した1mgのホモジナイズされたPPEを、1、6、12、18、24、30日目に、胃内の経管栄養を用いて受けた。血清を、後眼窩静脈叢から43日目に採取し、遠心し、サンプルを、さらなるアッセイまで−20℃で保存した。未感作マウスを同じ日に出血させた(n=10)。感作を、上に定義する生物学的パラメーターによりモニターした。
EPITを、8週間の間に週1回、以下の通りに実施した:
処置の終了時に、マウスに、3連続日の間に、ほとんどピーナッツ種子だけを摂食させた。次に、標準食物を再導入し、マウスは、3連続日の間に、胃内投与により50mgのピーナッツパウダーを受けた。次に、マウスを殺して、食道を採取し、10%中性緩衝化ホルマリン中で固定し、パラフィン中に包埋し、5μm切片に切断した。スライドを調製し、Hemalun Eosin Safranを用いて着色した。
着色したスライドを、ECVP(European College of Veterinary Pathologists)により認定された解剖病理学者により盲検で分析した。最初の記述的解釈が各々のスライドについて行われた。次に、好酸球を6つの代表的な視野で定量化した。結果を、好酸球/mm2組織面積として表した。
血液サンプルを、後眼窩静脈叢から免疫療法の前及びその間に採取し、血漿を、さらなる分析まで−30℃で保存した。
Graph Pad Software(San Diego, USA)を統計分析のために使用した。血清学的データを、分散分析(ANOVA)及びダネット検定を使用して(処置マウスと対照を比較する場合)、又はANOVA及びテューキー検定を使用して(全群を互いに比較する場合)分析した。好酸球数については、データを平均±SDとして表した。異なる組のマウスを比較する統計的有意性を、t検定を使用して決定した。
血清学的応答
IgE及びIgG1:ピーナッツ感作は、特に、43日目の特異的IgEの産生により特徴付けられた(図1に示す通り)。EPIT後、特異的IgEは、EP群(0.139±0.01μg/ml)において、NT群(0.166±0.01μg/ml)と比較し、有意に減少した(p<0.05)。さらに、免疫療法の間に、特異的IgG1の修飾は観察されなかった(データ示さず)。
好酸球性食道炎は感作NTマウスにおいて誘導され(図3に例証する)、そこでは重要な数の好酸球を観察することができた。好酸球浸潤は、感作NTマウス(136±32個好酸球/mm2)において、対照マウス(7±3個好酸球/mm2)と比較し、有意に高かった(p<0.01)(図4)。
優性Th2プロファイルから再均衡Th2/Th1プロファイルへの免疫偏向に導く皮膚処置は、ピーナッツに感作されたマウスの前臨床モデルにおいて好酸球性食道炎を予防するために効率的と思われる。
Claims (11)
- 組成物と皮膚の間での接触を可能にする条件下で被験者の皮膚上で装置を経皮適用することにより、被験者において食物誘発性好酸球性食道炎を処置するための組成物の製造における、食物アレルゲンを含む組成物を含む、非穿孔皮膚パッチ装置の使用であって、該組成物は、被験者の食道及び腸において、好酸球性浸潤の減少を起こすのに十分な量であり、該量はパッチ表面積1cm 2 あたり20ないし200μgの食物アレルゲンで、前記パッチ表面積は1ないし10cm 2 であり、前記適用は好酸球性食道炎の処置をもたらし、前記好酸球性食道炎は前記被検者における好酸球性浸潤を特徴とする、非穿孔皮膚パッチ装置の使用。
- 被験者が、1つ又は複数の食物アレルゲンに対するアレルギーに苦しむ、請求項1記載の使用。
- 食物アレルゲンが、牛乳、卵、小麦、大豆、及びピーナッツより選択される、請求項1又は2記載の使用。
- 1を上回る食物アレルゲンが、1つ又は複数のパッチ装置を介して、別々にか、連続的にか、又は同時に皮膚に適用される、請求項1〜3のいずれか一項記載の使用。
- 食物アレルゲンが乾燥形態である、請求項1〜4のいずれか一項記載の使用。
- 皮膚パッチ装置の繰り返し適用を含む、請求項1〜5のいずれか一項記載の使用。
- 組成物が、医薬的に許容可能な担体をさらに含む、請求項1〜6のいずれか一項記載の使用。
- 好酸球性浸潤の減少を起こすのに十分な量の食物アレルゲンを含む組成物を含む、非穿孔皮膚パッチ装置であって、該パッチ装置は表面積が1ないし10cm 2 であり、前記組成物はパッチ表面積1cm 2 あたり20ないし200μgの食物アレルゲンを含み、食物アレルゲンと皮膚との間で接触が可能な条件下で被験者の皮膚上で装置を皮膚に適用することにより、被験者の食道及び腸において被検者における好酸球性浸潤を特徴とする好酸球性食道炎の処置をもたらす、被験者における食物誘発性好酸球性食道炎の処置において使用するための、非穿孔皮膚パッチ装置。
- パッチ装置が、乾燥形態の食物アレルゲンを、静電力を通じてパッチに接着させる密封皮膚パッチ装置である、請求項8記載のパッチ装置。
- 牛乳、卵、小麦、大豆、及びピーナッツより選択される、1つ又は複数のアレルゲンを含む、請求項8又は9記載のパッチ装置。
- 被験者の食道及び腸において、好酸球性浸潤の減少に使用するための、請求項8〜10のいずれか一項記載のパッチ装置。
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WO2009142772A2 (en) * | 2008-05-23 | 2009-11-26 | Mastcell Pharmaceuticals, Inc. | Methods and treatment for allergies and inflammation associated with gastrointestinal diseases |
WO2010103116A2 (en) | 2009-03-13 | 2010-09-16 | Dbv Technologies | Method of treating eczema |
CA2796004C (en) | 2010-04-16 | 2020-09-22 | Dbv Technologies | Method of vaccination |
EP2626082A1 (en) | 2012-02-13 | 2013-08-14 | DBV Technologies | Method of preventing allergies |
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2010
- 2010-09-06 JP JP2012527343A patent/JP5879265B2/ja active Active
- 2010-09-06 CN CN2010800482574A patent/CN102596237A/zh active Pending
- 2010-09-06 EP EP10751661.9A patent/EP2475382B1/en active Active
- 2010-09-06 CN CN201710190277.9A patent/CN107320722A/zh active Pending
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- 2010-09-06 AU AU2010291171A patent/AU2010291171B2/en active Active
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US8932596B2 (en) | 2015-01-13 |
ES2534558T3 (es) | 2015-04-24 |
WO2011026966A3 (en) | 2011-04-28 |
AU2010291171B2 (en) | 2015-10-29 |
CA2773234C (en) | 2017-11-28 |
BR112012005117A2 (pt) | 2016-05-03 |
JP2013503836A (ja) | 2013-02-04 |
AU2010291171A1 (en) | 2012-03-29 |
EP2475382A2 (en) | 2012-07-18 |
CN102596237A (zh) | 2012-07-18 |
CN107320722A (zh) | 2017-11-07 |
WO2011026966A2 (en) | 2011-03-10 |
US20120207815A1 (en) | 2012-08-16 |
CA2773234A1 (en) | 2011-03-10 |
EP2475382B1 (en) | 2015-01-14 |
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