JP5701885B2 - チオ−nad(p)hを用いた第xiii因子の測定方法 - Google Patents
チオ−nad(p)hを用いた第xiii因子の測定方法 Download PDFInfo
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- JP5701885B2 JP5701885B2 JP2012531248A JP2012531248A JP5701885B2 JP 5701885 B2 JP5701885 B2 JP 5701885B2 JP 2012531248 A JP2012531248 A JP 2012531248A JP 2012531248 A JP2012531248 A JP 2012531248A JP 5701885 B2 JP5701885 B2 JP 5701885B2
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Description
a)試料を、
I.第XIII因子を第XIIIa因子に活性化するための物質(例えば、Ca2+イオンの存在下におけるトロンビン)、II.第XIIIa因子のための受容体基質(例えばグルタミン含有ペプチド)、III.第XIIIa因子のためのアミノ基供与体基質(例えば第1級アミン)、IV.NADH又はNADPH、及び、V.アンモニアの存在下において、NADHをNAD+に酸化させることができる薬剤(例えば、グルタメートデヒドロゲナーゼとα−ケトグルタレートとからなる薬剤)と、
混合し、
b)この試験バッチの吸収の変化を測定する方法であって、
NADH又はNADPHの代わりに、350nmを超える波長に吸収極大を有するNADH又はNADPHの類縁体、いわゆるNAD(P)H類縁体、を使用する方法により解決される。
特に、上記化合物は、還元の際に、つまりヒドリドイオンの受け取りの際に、キノイド型からベンゼノイド型に移行することができ且つその逆に移行することができる有機化合物、好適には、複素環式化合物を含む。特に、ピリジンの誘導体が有利である。中でも、ニコチンアミドの構造類縁体が有利である。
a)前記試料を、
I.第XIII因子を第XIIIa因子に活性化するための物質又は物質混合物、
II.少なくとも1つのグルタミニル基を有する、第XIIIa因子のための受容体基質、
III.第XIIIa因子のためのアミノ基供与体基質、
IV.350nmを超える波長に吸収極大を有するNAD(P)H類縁体、及び
V.アンモニアの存在下に、NAD(P)HをNAD(P)+に又はNAD(P)H類縁体を相応するNAD(P)+類縁体に、酸化することができる薬剤、
を含有する1種以上の試薬と混合し、そして、
b)前記試験バッチの吸収の変化を測定する、測定方法に関する。
1.第XIII因子を活性化して第XIIIa因子にする物質又は物質混合物、好適にはトロンビン、を含有する第1の試薬;
2.以下の成分を含有する第2の試薬
・第XIIIa因子のための、少なくとも1つのグルタミニル基を有する、少なくとも1つの受容体基質、好適にはアミン受容体として少なくとも1つのグルタミニル基を有する合成ペプチド、
・第XIIIa因子のための少なくとも1つのアミノ基供与体基質、好適には第1級アミン、及び
・アンモニアの存在下に、NAD(P)HをNAD(P)+に、又はNAD(P)H類縁体を相応するNAD(P)+類縁体に、酸化することができる、好適にはグルタメートデヒドロゲナーゼとケトグルタレートとからなる、少なくとも1つの薬剤;
及び
3.350nmを超える波長に吸収極大を有する少なくとも1つのNAD(P)H類縁体を含有する第3の試薬。
図2は、ヘモグロビンが混入された血漿試料中の第XIII因子測定を示す(実施例2参照)。上側の図は、NADH第XIII因子試験結果を示す。下側の図は、本発明によるチオ−NADH第XIII因子試験結果を示す。この破線で示す水平の線は、ヘモグロビン0mg/mLの出発値からの10%の乖離を示す。チオ−NADH第XIII因子試験は、公知のNADH第XIII因子試験よりも本質的に高いヘモグロビン濃度の場合に初めて、10%の境界を超える。
図3は、コレステロールが混入された血漿試料中の第XIII因子測定を示す(実施例2参照)。上側の図は、NADH第XIII因子試験結果を示す。下側の図は、本発明によるチオ−NADH第XIII因子試験結果を示す。この破線で示す水平の線は、コレステロール0mg/mLの出発値からの10%の乖離を示す。公知のNADH第XIII因子試験とは対照的に、本発明によるチオ−NADH第XIII因子試験は、ここで試験したコレステロール濃度の場合に、10%の境界を全く超えない。
図4は、ビリルビンが混入された血漿試料中の第XIII因子測定を示す(実施例2参照)。上側の図は、NADH第XIII因子試験結果を示す。下側の図は、本発明によるチオ−NADH第XIII因子試験結果を示す。この破線で示す水平の線は、ビリルビン0mg/mLの出発値からの10%の乖離を示す。公知のNADH第XIII因子試験とは対照的に、本発明によるチオ−NADH第XIII因子試験は、ここで試験したビリルビン濃度の場合に10%の境界を全く超えない。
チオ−NADHを用いた第XIII因子の本発明による測定
次の試薬を調製した:
・チオ−NADH(Oriental Yeast Company、ロッテルダム、オランダ国)292μM
・ウシのトロンビン(10 IU/mL)
・フィブリン凝集阻害剤としてのGly−Pro−Arg−Pro−Ala−アミド(2g/L)
・塩化カルシウム(1.2g/L)
・臭化ヘキサジメトリン(10mg/L)
・ウシのアルブミン
・ビシン緩衝剤(100ミリモル/L)
・グルタメートデヒドロゲナーゼ(260 IU/mL)
・第XIII因子受容体基質としてのLeu−Gly−Pro−Gly−Gln−Ser−Lys−Val−lle−Gly−アミド(2.4g/L)
・ADP
・グリシンエチルエステル(1.4g/L)
・α−ケトグルタレート(2.7g/L)
・ウシのアルブミン
・HEPES緩衝剤(10ミリモル/L)
HIL試料中のチオ−NADHを用いた第XIII因子の本発明による測定
標準ヒト血漿(SHP、シーメンス ヘルスケア ダイアグノスティクス)を、ヘモグロビン、ビリルビン、トリグリセリド又はコレステロールと、これらの濃度を増加させながら、混合し、これらは、それぞれ、一定の体積でこの血漿に供給した。このために、540μLのSHPを、様々な濃度を有するそれぞれの物質の溶液60μLと、混合した。ヘモグロビンを、Tris緩衝した食塩水(TBS:150mM NaCl、50mM Tris、pH7.6)中に溶かし、コレステロールをヒト血清アルブミン40mg/mLを有するTBS中に溶かし、ビリルビンを0.05M NaOH中に溶かし、上記SHPに量り込んだ。出発値の測定のために、540μLのSHPを、物質を添加せずに、それぞれの緩衝液60μLと混合した。引き続き、各物質が混入された血漿試料の第XIII因子活性を、本発明による方法によって、チオ−NADH(実施例1参照)を用いて、3回繰り返して、測定した。比較のために、同じ試料を、NADHを使用するBerichrom(登録商標)第XIII因子試験(シーメンス ヘルスケア ダイアグノスティクス プロダクツ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング社、マールブルグ、ドイツ国)を用いて、製造元の記載事項に基づき、3回繰り返して、測定した。各物質が混入された試料についての測定結果が、各物質が混入されていない試料についての測定結果から、10%より高く相違する場合には、干渉が生じている。即ち、信頼し得る第XIII因子測定は不可能である。
Claims (12)
- 試料中の第XIII因子の測定方法であって、
a)前記試料を、
I.第XIII因子を第XIIIa因子に活性化するための物質又は物質混合物、
II.少なくとも1つのグルタミニル基を有する、第XIIIa因子のための受容体基質、
III.第XIIIa因子のためのアミノ基供与体基質、
IV.350nmを超える波長に吸収極大を有するチオ−NAD(P)H、及び
V.アンモニアの存在下に、チオ−NAD(P)Hをチオ−NAD(P)+に、酸化することができる薬剤を有する1種以上の試薬と、
混合し、
b)前記試験バッチの吸収の変化を測定する、測定方法。 - 工程a)において前記試料を更にフィブリン凝集阻害剤と混合する、請求項1に記載の方法。
- 前記第XIII因子を第XIIIa因子に活性化するための物質がトロンビンである、請求項1又は2に記載の方法。
- 少なくとも1つのグルタミニル基を有する、第XIIIa因子のための、受容体基質が、アミン受容体として少なくとも1つのグルタミン残基を有するポリペプチドである、請求項1〜3のいずれか1項に記載の方法。
- 第XIIIa因子のためのアミノ基供与体基質が、第1級アミンである、請求項1〜4のいずれか1項に記載の方法。
- アンモニアの存在下に、チオ−NAD(P)Hをチオ−NAD(P)+へ酸化することができる薬剤が、酵素及び該酵素のための基質を含有する、請求項1〜5のいずれか1項に記載の方法。
- 前記酵素がグルタメートデヒドロゲナーゼであり、前記酵素のための基質がα−ケトグルタレートである、請求項6に記載の方法。
- 工程a)において、前記試料を、更に、ヘパリン中和物質又は塩化カルシウムと、混合する、請求項1〜7のいずれか1項に記載の方法。
- 前記試験バッチの吸収変化を、340nm〜430nmの波長の光を用いて、測定する、請求項1〜8のいずれか1項に記載の方法。
- 試料中の第XIII因子の測定方法における、350nmを超える波長に吸収極大を有するチオ−NAD(P)Hの、使用。
- 試料中の第XIII因子の測定方法を実施するための試験キットであって、以下の成分:
a.第XIII因子を活性化して第XIIIa因子にする物質又は物質混合物を含有する第1の試薬、
b.以下の成分を含有する第2の試薬、
・第XIIIa因子のための、少なくとも1個のグルタミニル基を有する、少なくとも1種の受容体基質、
・第XIIIa因子のための少なくとも1種のアミノ基供与体基質及び
・アンモニアの存在下に、チオ−NAD(P)Hをチオ−NAD(P)+へ、酸化することができる少なくとも1種の薬剤、並びに
c.350nmより長い波長にある吸収極大を有するチオ−NAD(P)Hを含有する第3の試薬を含有する、試験キット。 - 前記第1の試薬が、第XIII因子を第XIIIa因子に活性化するトロンビン、及び、更に、塩化カルシウム、フィブリン凝集阻害剤又は臭化ヘキサジメトリンを含有する、請求項11に記載の試験キット。
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2010
- 2010-06-16 WO PCT/EP2010/003611 patent/WO2011042071A1/de active Application Filing
- 2010-06-16 JP JP2012531248A patent/JP5701885B2/ja active Active
- 2010-06-16 EP EP10732641.5A patent/EP2486144B1/de active Active
- 2010-06-16 US US13/498,922 patent/US20120190052A1/en not_active Abandoned
- 2010-06-16 ES ES10732641T patent/ES2436072T3/es active Active
Also Published As
Publication number | Publication date |
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US20120190052A1 (en) | 2012-07-26 |
EP2486144B1 (de) | 2013-10-16 |
ES2436072T3 (es) | 2013-12-26 |
DE102009048198A1 (de) | 2011-04-21 |
WO2011042071A1 (de) | 2011-04-14 |
JP2013506401A (ja) | 2013-02-28 |
EP2486144A1 (de) | 2012-08-15 |
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