JP5766714B2 - インピーダンス測定に基づく多重インピーダンス解析システムを使用する方法 - Google Patents
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Description
このチップは、特定の検体が存在する試料に接触したときにインピーダンスが変化する、微小電極の配列を備える。このように、微小電極のインピーダンスの変化に基づいて、試料に存在する検体量が算出される。
このセルは、多電極チップに適応する溝、および、上記溝に挿入された多電極チップの各々の微小電極を流体試料順次通過することが可能な単一流路を備える。好ましくは、循環路の吸入口および排出口は、単一流路セルの上側表面に設けられていることである。要するに、このセルは、多電極チップの全ての電極への試料の流路を形成する。
このセルは、多電極チップに適応する溝、および、多電極チップの微小電極の各々を液体試料が独立して通過することが可能ないくつかの流路を備える。単一流路セルの場合のように、上記流路の吸入口および排出口は、このましくは上記多流路セルの上側表面に設けられていることである。要するに、多流路セルは、異なる試料が混ぜ合わさることなく微小電極の各々を通過することが可能となっている。
第1の例では、本発明のシステムを使用する、単一の試料における複数の検体の同時検出および量子化が表される。特に、食品試料が問題物として呼ぶべき、アトラジン(ATRZ)、アジンホス(AZM)、トリクロロフェノール(TCP)、または、ブロモプロピレン(BP)農薬によって汚染されているかを探知する。
分析物 校正曲線間隔(μgL-1)
アトラジン 500-1.6 × 10-3
TCP 200-3 × 10-3
ブロモプロピレン 250-4 × 10-3
アジンホス 300-3.84 × 10-3
なお、微小電極(11a,11b,11c,11d)の第1の導電率測定は、検出用バッファのみを使用して、試料の上記微小電極(11a,11b,11c,11d)の通過に先行して実行される。この測定値は、検体の存在に起因するインピーダンスのばらつきを事実上測定する第2の測定において得られた計測値から差し引かれるための参照測定値である。微小電極(11a,11b,11c,11d)の第2の導電率測定は、試料が上記微小電極(11a,11b,11c,11d)を通過した後、および、前述の後続する洗浄段階の後、行われる。
Claims (4)
- 単一の試料における複数種の検体の同時検出および/または定量化のための、または、複数種の試料における検体の同時検出のための、インピーダンス測定に基づいた多重インピーダンス解析システムを使用して、単一の試料における複数種の検体を同時検出および/または定量化するための方法であって、
上記多重インピーダンス解析システムは、
一組の微小電極(11a,11b,11c,11d)を備える多電極チップ(10)と、
多電極チップ(10)の収容に適した溝(21)と、前記溝(21)に挿入されたときに多電極チップ(10)における微小電極(11a,11b,11c,11d)の各々に順次流体試料を通過させることを可能とする単一流路(22)と、を備える単一流路セル(20)と、
多電極チップ(10)の収容に適した溝(31)と、多電極チップ(10)における電極(11a,11b,11c,11d)の各々に、様々な流体試料を独立して通過させることを可能とするいくつかの独立した流路(32a,32b,32c,32d)と、を備える第2の多流路セル(30)と、
を備えており、
多流路セル(30)の溝(31)に多電極チップ(10)を挿入する工程、
検出される各々の検体のための選択的な受容体または競合体を、各々の微小電極(11a,11b,11c,11d)に固着させるため、適当な化合物を流路(32a,32b,32c,32d)の各々に通過させる工程、
多電極チップ(10)を多流路セル(30)から取り除き、単一流路セル(20)の溝(21)へ挿入する工程、および、
単一流路セル(20)の流路(22)に、各々の検体に適した免疫反応性混合物と混ぜ合わされた単一の試料を通過させることにより、所望の検体の各々を対応する微小電極(11a,11b,11c,11d)に固着させる工程
を含むことを特徴とする方法。 - 試料が微小電極(11a,11b,11c,11d)を通過する前の、微小電極(11a,11b,11c,11d)の導電率の第1の測定を行う工程、
試料の微小電極(11a,11b,11c,11d)の通過、および、後続する洗浄段階の後の、微小電極(11a,11b,11c,11d)の導電率の第2の測定を行う工程、および、
上記2つの測定に基づいて、それぞれの微小電極(11a,11b,11c,11d)におけるそれぞれの検体量を決定する工程
をさらに含むことを特徴とする請求項1に記載の方法。 - 単一の試料における複数種の検体の同時検出および/または定量化のための、または、複数種の試料における検体の同時検出のための、インピーダンス測定に基づいた多重インピーダンス解析システムを使用し、複数種の試料における単一の検体を同時検出および/または定量化するための方法であって、
上記多重インピーダンス解析システムは、
一組の微小電極(11a,11b,11c,11d)を備える多電極チップ(10)と、
多電極チップ(10)の収容に適した溝(21)と、前記溝(21)に挿入されたときに多電極チップ(10)における微小電極(11a,11b,11c,11d)の各々に順次流体試料を通過させることを可能とする単一流路(22)と、を備える単一流路セル(20)と、
多電極チップ(10)の収容に適した溝(31)と、多電極チップ(10)における電極(11a,11b,11c,11d)の各々に、様々な流体試料を独立して通過させることを可能とするいくつかの独立した流路(32a,32b,32c,32d)と、を備える第2の多流路セル(30)と、
を備えており、
単一流路セル(20)の溝(21)に多電極チップ(10)を挿入する工程、
検出される検体のための選択的な受容体または競合体を、各々の微小電極(11a,11b,11c,11d)に固着させるため、適当な化合物を流路(22)に通過させる工程、
多電極チップ(10)を単一流路セル(20)から取り除き、そして、多流路セル(30)の溝(31)へ挿入する工程、および、
多流路セル(30)の各々の流路(32a,32b,32c,32d)に試料を通過させることにより、所望の検体を各々の微小電極(11a,11b,11c,11d)へ固着させる工程
を含むことを特徴とする方法。 - 試料が微小電極(11a,11b,11c,11d)を通過する前の、微小電極(11a,11b,11c,11d)の導電率の第1の測定を行う工程、
試料の微小電極(11a,11b,11c,11d)の通過、および、後続する洗浄段階の後の、微小電極(11a,11b,11c,11d)の導電率の第2の測定を行う工程、および、
上記2つの測定に基づいて、微小電極(11a,11b,11c,11d)のそれぞれにおける検体量を決定する工程
をさらに含むことを特徴とする請求項3に記載の方法。
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ITUD20130047A1 (it) | 2013-04-03 | 2014-10-04 | Ct Di Riferimento Oncologico | Apparecchiatura per l'analisi del processo di formazione di aggregati in un fluido biologico e relativo metodo di analisi |
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AU2010332701A1 (en) | 2012-07-05 |
CN102753966A (zh) | 2012-10-24 |
EP2515103A1 (en) | 2012-10-24 |
JP2013513811A (ja) | 2013-04-22 |
US20120309108A1 (en) | 2012-12-06 |
US9170227B2 (en) | 2015-10-27 |
MX2012007008A (es) | 2012-11-23 |
WO2011073481A1 (es) | 2011-06-23 |
CA2784790A1 (en) | 2011-06-23 |
ES2367615A1 (es) | 2011-11-07 |
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