JP2019532941A - パープルコーン抽出物を含む皮膚疾患の予防または治療用薬剤学的組成物 - Google Patents
パープルコーン抽出物を含む皮膚疾患の予防または治療用薬剤学的組成物 Download PDFInfo
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Abstract
Description
パープルコーン[品種名:パープルコーン(purple corn)(Zeamays.L)]はトウモロコシ試験場(韓国、江原道)から提供を受けた。乾燥させたパープルコーン5kgを粉砕し、ガラスチャンバーで30Lの30%エタノール−水溶液と混合して、20時間室温で抽出した。抽出物を集めてモデルEYELA N−1000ロータリーエバポレーター(Tokyo Rikakikai,Tokyo,Japan)を用いて減圧下で濃縮させて冷凍乾燥させた(収率:410g、8.2%)。乾燥させた抽出物は下の実験で使用する前まで−20℃で保管した。
手に湿疹を有する患者3人を募集して前記製造例1によって製造されたパープルコーン抽出物を2週間1日1回ずつ服用した。2週後、各患者の手の写真を撮影して手に発生した皮膚角質層の異常分化に対する変化を確認した(図1)。
まず、実験動物(BALB/C MOUSE)をペントバルビタールで麻酔後に毛を除去した。1%2,4−ジニトロクロロベンゼン(2.4−dinitrochlorobenzen、DNCB)をアセトン(アセトン:オリーブオイル=4:1)に溶かした溶液を6日間1日2回150ulずつガーゼの上に投与後、パッチ(patch)により実験動物の皮膚の上に付着して湿疹を誘発した。その後、麻酔後100ulの1%2,4−ジニトロクロロベンゼンを1日2回ずつガーゼの上に投与してパッチにより製作した。これを皮膚の上に付着して湿疹(アトピー)を誘発した。次に、下記表1のように、各実験群の実験動物モデルに8日間1日2回経口投与した。図2に湿疹に対する皮膚病変の状態を確認した結果を示した。
湿疹による痒みを抑制させる効能を評価するため、前記実験例2のように湿疹を誘発させた実験動物モデルに前記表1のように経口投与しながら、2、4、6、8日目掻破(scratching)回数を測定して図3に示した。
前記実験例2を終えた後、各実験群の実験動物モデルの皮膚組職を2等分で採取した。1片は4%パラホルムアルデヒド(paraformaldehyde,at pH7.4)で固定し、残りの1片は冷凍保管した。その後、血液を採取してバイオマーカーIgEの数値を測定して図4に示した。
1.乾癬治療用実験動物モデル準備
乾癬は2009年van der Fitsなどによって発表された方法であるイミキモドクリーム(Imiquimod cream,IMQ)で誘導した。実験動物は7週齢のマウス(BALB/C MOUSE)を実験動物室で7日間飼育、純化させた後に使用した。飼育室の温度は20.9〜22.6℃、相対湿度50〜55%、照明周期12時間(08:00−20:00)に調節し、水と食餌は自由に与えた。実験動物の背の毛を除毛クリーム(Veet,Oxy Reckitt Benckiser,Cedex,France)を利用して除毛した。背と耳の臨床的な症状を考慮し、下記表2のように、実験動物モデルを4つの群に分けた。除毛の翌日から、正常対照群を除く残りの実験群の実験動物は62.5mgのイミキモドクリームを毎日背と右耳に6日間塗布した。この時、正常対照群は毎日62.5mgずつ背と右耳にバセリンを塗布した。
前記乾癬治療用実験動物モデルの4つの実験群は下記表3のように7日間経口投与した。この時、前記正常対照群と対照群は同量の生理食塩水を経口投与した。前記パープルコーン抽出物は生理食塩水に溶かして使用した。
各実験群の実験動物を解剖した後、背の皮膚の一部を摘出してヘマトキシリン−エオシン(hematoxylin & eosin,H&E)染色を通じた組職学的に観察した。この結果を図8及び図9に示した。
乾癬モデルの場合、脾臓細胞のヘルパーT細胞(helper T cell)と細胞毒性T細胞(cytotoxic T cells)の比率が減少するものとして知られている。従って、パープルコーン抽出物が脾臓及び脾臓リンパ球の変化に及ぼす影響を観察した。
1.乾癬予防及び治療用実験動物モデル準備
乾癬は2009年 van der Fitsなどによって発表された方法であるイミキモドクリーム(imiquimod cream)で誘導した。実験動物は7週齢のマウス(BALB/C MOUSE)を実験動物室で7日間飼育、純化させた後に使用した。飼育室の温度は20.9〜22.6℃、相対湿度50〜55%、照明周期12時間(08:00−20:00)に調節した。実験動物の背の毛を除毛クリーム(Veet,Oxy Reckitt Benckiser,Cedex,France)を利用して除毛した。背と耳の臨床的な症状を考慮し、実験動物モデルを正常対照群、対照群、実験群1及び実験群2に分けた。除毛翌日から、正常対照群を除く残りの実験群の実験動物は62.5mgのイミキモドクリームを毎日背と右耳に6日間塗布した。この時、正常対照群は毎日62.5mgずつ背と右耳にバセリンを塗布した。また、イミキモドクリーム塗布と同時に下記表4のように毎日経口投与した。この時、前記正常対照群と対照群は同量の生理食塩水を経口投与した。前記パープルコーン抽出物は生理食塩水に溶かして使用した。
前記乾癬予防及び治療用実験動物モデルの4つの実験群は7日間皮膚病変の紅斑(erythema)、厚さ(thickness)及び鱗屑(scaliness)の臨床的変化を考察した。皮膚病変の程度(clinical Skin Severity Score)の測定は乾癬評価に一般的に用いられる臨床的肉眼評価法を利用した。即ち、肉眼評価項目として紅斑、厚さ及び鱗屑を測定し、紅斑及び鱗屑は実験有経験者3人以上が各々実施して次の基準によって症状なし(0点)、症状が弱い(1点)、重症度(2点)、ひどい(3点)、極めてひどい(4点)で採点した後、平均値で示した。厚さはキャリパー(caliper)を利用して測定した。この結果を図11ないし図13に示した。
前記図11のように、すべての実験動物の背の皮膚に対する紅斑(図11A)、厚さ(図11B)、鱗屑(図11C)の程度がイミキモドクリーム塗布以後に増加した。しかし、パープルコーン抽出物を投与した実験群1及び実験群2では対照群に比べて紅斑、厚さ、鱗屑の程度が有意的に減少する傾向を示した。
各実験群の実験動物を解剖した後、背及び耳の皮膚の一部を摘出してヘマトキシリン−エオシン(hematoxylin & eosin,H&E)染色を通じて組職学的に観察した。この結果を図14及び図15に示した。
Claims (18)
- パープルコーン抽出物を有効成分として含む皮膚疾患の予防または治療用薬剤学的組成物。
- 前記皮膚疾患はアトピー、乾癬、湿疹、角化症、痒疹及び水いぼからなる群から選択されるいずれか1以上である請求項1に記載の皮膚疾患の予防または治療用薬剤学的組成物。
- 前記皮膚疾患は乾癬である、請求項2に記載の皮膚疾患の予防または治療用薬剤学的組成物。
- 前記皮膚疾患は湿疹である、請求項2に記載の皮膚疾患の予防または治療用薬剤学的組成物。
- 前記皮膚疾患はアトピーである、請求項2に記載の皮膚疾患の予防または治療用薬剤学的組成物。
- 前記パープルコーン抽出物は全体組成物に対して0.001ないし90.0重量%で含有されている、請求項1に記載の皮膚疾患の予防または治療用薬剤学的組成物。
- 前記抽出物が皮膚角質層の異常分化を抑制させる、請求項1に記載の皮膚疾患の予防または治療用薬剤学的組成物。
- 前記パープルコーン抽出物は溶媒抽出法、超音波抽出法、超臨界抽出法、発酵法及び炮製法からなる群から選択された抽出法で収得する、請求項1に記載の皮膚疾患の予防または治療用薬剤学的組成物。
- 前記溶媒抽出法は水、有機溶媒及びこれらの混合溶媒からなる群から選択される請求項8に記載の皮膚疾患の予防または治療用薬剤学的組成物。
- 前記有機溶媒はC1ないしC4の低級アルコールである請求項9に記載の皮膚疾患の予防または治療用薬剤学的組成物。
- 前記薬剤学的組成物は補助剤または添加剤が追加で含まれる請求項1に記載の皮膚疾患の予防または治療用薬剤学的組成物。
- 請求項1ないし請求項11のいずれか1項による薬剤学的組成物を含む皮膚疾患の予防または治療用薬剤学的製剤。
- 前記薬剤学的製剤は錠剤、丸剤、散剤、カプセル剤、シロップ及びエマルジョン形態からなる群から選択される請求項12に記載の皮膚疾患の予防または治療用薬剤学的製剤。
- 前記薬剤学的製剤は薬剤学的に許容できる担体、補強剤及び賦形剤からなる群から選択された1種以上を追加で含む、請求項12に記載の皮膚疾患の予防または治療用薬剤学的製剤。
- パープルコーンを乾燥させて粉砕する段階と、
粉砕物を水、有機溶媒及びこれらの混合溶媒からなる群から選択される溶媒で抽出する段階、及び
抽出物を減圧下で濃縮した後、乾燥する段階を含む請求項1による皮膚疾患の予防または治療用薬剤学的組成物の製造方法。 - 前記有機溶媒はC1ないしC4の低級アルコールである請求項15に記載の皮膚疾患の予防または治療用薬剤学的組成物の製造方法。
- 前記乾燥は日光乾燥、熱風乾燥、蒸発乾燥、噴霧乾燥、凍結乾燥及びこれらの組み合わせからなる群から選択される乾燥である請求項15に記載の皮膚疾患の予防または治療用薬剤学的組成物の製造方法。
- 前記乾燥は凍結乾燥である請求項17に記載の皮膚疾患の予防または治療用薬剤学的組成物の製造方法。
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- 2017-09-19 US US16/335,364 patent/US20190282650A1/en not_active Abandoned
- 2017-09-19 CN CN201780058121.3A patent/CN109715184A/zh active Pending
- 2017-09-19 WO PCT/KR2017/010260 patent/WO2018056676A1/ko unknown
- 2017-09-19 JP JP2019516378A patent/JP7208892B2/ja active Active
- 2017-09-19 EP EP17853390.7A patent/EP3517121A4/en not_active Withdrawn
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2021
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- 2021-07-28 JP JP2021122991A patent/JP2021176888A/ja active Pending
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US20190282650A1 (en) | 2019-09-19 |
EP3517121A1 (en) | 2019-07-31 |
EP3517121A4 (en) | 2020-04-01 |
JP7208892B2 (ja) | 2023-01-19 |
JP2021176888A (ja) | 2021-11-11 |
WO2018056676A1 (ko) | 2018-03-29 |
CN109715184A (zh) | 2019-05-03 |
US20210346455A1 (en) | 2021-11-11 |
KR101839109B1 (ko) | 2018-03-15 |
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