JP5588005B2 - 痒みの客観的測定値として皮膚からヒスタミンを測定するための非侵襲的方法 - Google Patents
痒みの客観的測定値として皮膚からヒスタミンを測定するための非侵襲的方法 Download PDFInfo
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Description
用いた抽出手順は上述したが、上述のアウトラインが示された多数の工程に用いることができる別の方法が多数存在すし、これらの方法は、論理的拡張である。テープストリップからヒスタミンを分離するために用いた抽出溶媒は、ヒスタミンの好適な回収をもたらす、任意の適切な水性、有機、又は有機/水性混合物であってよい。安定同位体を使用する分離法を用いたが、化学的な内部標準法又は外部標準法を用いてもよい。LC/MS/MSは、その高い選択性及び感度のために、生体マトリックスにおける小有機分子の定量分析の最新法と一般に見なされている。しかし、要求される感度及び選択性をもたらす任意の分析法及び/又は他の方法を用いてよい。例えば、ガスクロマトグラフィー、液体クロマトグラフィー、電気泳動など他の分離法を使用する方法が用いられてきた。誘導体化処理を伴って、又は伴わずに高感度モードのガスクロマトグラフィー(例えば、質量分析、電子捕獲、炎イオン化)を用いて、ヒスタミンが分析されてきた。誘導体化処理を伴って、又は伴わずに、UV、電気化学、又は蛍光検出機能を備える高速液体クロマトグラフィーも用いられてきた。様々な検出システムを用いるキャピラリー電気泳動が評価されてきた。同様に、質量分析、電気化学的測定、及び蛍光測定など分離技術を用いない機器による方法も用いられてきた。更に、競合及び非競合酵素結合免疫吸着アッセイ(ELISA)及びラジオイムノアッセイ(RIA)などリガンド結合法又は他の標識化スキームも用いられてきた。酵素を使用する分析は、ヒスタミン分析において長い使用歴を有する。細胞又は組織のいずれかを使用する方法を用いるバイオアッセイも、検出手段として用いられてきた。ヒスタミン代謝産物の測定も、ヒスタミン値の間接的評価を提供するために用いられてきた。
上記の好適な方法を用いて測定した皮膚のテープストリップサンプル上のヒスタミン値は、テープストリップ抽出物に見られるタンパク質量を用いて標準化してよい。標準化は、テープストリップ抽出物中のタンパク質の量でヒスタミン値を除して行う。
フケ被験者は、2つの別個の臨床研究(調査番号1及び調査番号2)において認定検査員によって認定された。調査番号2には非フケ被験者も含まれており、これらの被験者は、基準時にも評価されて標準ヒスタミン値(n=121)を確立した。
ヒスタミンデータの統計分析:ヒスタミンデータは、基準時及び第3週(治療後)のフケ被験者並びに基準時の非フケ被験者について回収した。被験者間並びに被験者内(基準時−>第3週)でのヒスタミン値の大幅な変動を考慮すると、分析前にヒスタミンデータをlog10スケールに変換することがより効率的である。統計分析は、対応するlog10比値(即ち、log10(第3週/基準時))に基づいて実行した。次に、最終的に報告されたヒスタミンの結果を元のスケール(又は、基準時値からの%変化)に再変換して、解釈を容易にする。全ての統計分析は、SAS JMP(バージョン7.0.2)ソフトウェアを用いて実行した。統計的有意性の判定には、p値は≦0.10の(片側)を用いた。
Claims (16)
- 表皮中のヒスタミンの非侵襲的な測定により抗真菌シャンプーの利益を実証する方法であって、該方法が、
a)該抗真菌シャンプーの利用後に、哺乳類の上皮に接着物品を貼付する工程と、
b)上皮細胞の該接着物品への付着を可能にする工程と、
c)該接着物品を該哺乳類の上皮から取り外す工程と、
d)抽出のために標準的な実験室法を用いて該接着物品を準備する工程と、
e)該接着物品に付着した上皮細胞からヒスタミンを抽出する工程と、
f)該接着物品に付着した上皮細胞からのヒスタミンを測定する工程と、
g)該抗真菌シャンプーの利用前の哺乳類の上皮細胞におけるヒスタミンの基準時サンプルと比較して該上皮細胞中のヒスタミンの量を定量化する工程と、
を含み、ここで、該ヒスタミンを該接着部品上のタンパク質の量で除することによって、該ヒスタミンを標準化する、方法。 - 前記上皮が角質層を含む、請求項1に記載の方法。
- ヒスタミンの基準値と比較したときに、標準化されたヒスタミン値が46%減少する、 請求項1又は2に記載の方法。
- 前記ヒスタミン値が25%〜100%減少する、請求項1〜3のいずれか一項に記載の方法。
- 抗真菌シャンプーの利用前のヒスタミンの基準値と比較したときに、利用後の標準化されたヒスタミンが46%減少する、請求項1〜4のいずれか一項に記載の方法。
- フケ防止シャンプーの利用前のヒスタミンの基準値と比較したときに、利用後の標準化されたヒスタミンが46%減少する、請求項1〜5のいずれか一項に記載の方法。
- ジンクピリチオンシャンプーの利用前のヒスタミンの基準値と比較したときに、利用後の標準化されたヒスタミンが46%減少する、請求項1〜6のいずれか一項に記載の方法。
- 正常集団と比較したときに、痒みの点で79%改善する、請求項1〜7のいずれか一項に記載の方法。
- 正常な肌の状態に79%回帰する、請求項1〜8のいずれか一項に記載の方法。
- 前記哺乳類がヒトである、請求項1〜9のいずれか一項に記載の方法。
- 哺乳類における痒みの認知を客観的に測定する非侵襲的な方法であって、該方法が、
a)哺乳類の上皮に接着物品を貼付する工程と、
b)上皮細胞の該接着物品への付着を可能にする工程と、
c)該接着物品を該哺乳類の上皮から取り外す工程と、
d)抽出を行うために標準的な実験室法を用いて該接着物品を準備する工程と、
e)該接着物品に付着した上皮細胞からヒスタミンを抽出する工程と、
f)該接着物品に付着した上皮細胞からのヒスタミンを測定する工程と、
g)基準サンプルと比較して該上皮細胞中のヒスタミンの量を定量化する工程と、
を含み、ここで、該ヒスタミンを該接着部品上のタンパク質の量で除することによって、該ヒスタミンを標準化する、方法。 - 痒みの認知の減少に直接的に正比例する、基準値からのヒスタミンの減少が存在する、請求項11による方法。
- 前記ヒスタミンを前記接着物品上のタンパク質の量で除することによって前記ヒスタミンを標準化する、請求項11に記載の方法。
- 前記接着物品が、疾病、疾患、又は炎症反応に悩む被験者の上皮に貼付される、請求項1に記載の方法。
- 前記接着部品が、皮膚炎に悩む被験者の上皮に貼付される、請求項1に記載の方法。
- 前記接着部品が、フケに悩む被験者の上皮に貼付される、請求項1に記載の方法。
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