JP2005528613A - 抗アシアロガングリオシド抗体の測定による敗血症の診断方法 - Google Patents
抗アシアロガングリオシド抗体の測定による敗血症の診断方法 Download PDFInfo
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Abstract
Description
A.Beishuizenら、「Endogenous Mediators in Sepsis and Septic Shock」、Advances in Clinical Chemistry、第33巻、1999年、55〜131頁 C.Gabayら、「Acute Phase Proteins and Other Systemic Responses to Inflammation」、The New England Journal of Medicine、第340巻、第6号、1999年、448〜454頁 K.Reinhartら、「Sepsis und septischer Schock」[Sepsis and Septic Shock]、Intensivmedizin、Georg Thieme Verlag、Stuttgart、New York、2001年、756〜760頁 M.Assicotら、「High serum procalcitonin concentrations in patients with sepsis and infection」、The Lancet、第341巻、第8844号、1993年、515〜518頁
1.アッセイ成分の調製:
A.試験管(被覆試験管;CT)の調製
3種類のタイプの試験管を調製した:(a)ガングリオシドGM1およびAGM1が結合されている試験管。(b)サンプルに特異的なバックグラウンドシグナルを測定するためのBSAコーティングを施した試験管。
ヤギ抗ヒトIgG抗体(アフィニティ-精製品;grade II、米国のScantibodies製)およびヤギ抗ヒトIgA抗体(アフィニティ-精製品;ドイツ国のSigma社製)のPBS、pH7.4、100μl溶解液、各ケース2mg/mlをアクリジニウムNHSエステル(ドイツ国Hoechst製、アセトニトリル溶解液1mg/ml;DE36 28573A1を参照)10μlと各々混合し、室温で20分間インキュベートした。300μlの20mMグリシン、50mM Nadを添加後、標識抗体をヒドロキシアパタイトHPLCによって吸着クロマトグラフィーで精製した。用いた分離カラムは、溶媒Aで平衡化したHPHTカラム(120mm×8mm)であった(1mM NaPO4、pH7.0、10%メタノール、0.1%Lubrol;「LM A」;Lubrol 17A17はドイツ国Servaから入手)。流速は0.8ml/分であった。結合抗体は、0.8ml/分の流速で、40分間かけて、LM A/LM B(500mM NaPO4、pH7.0、10%メタノール、0.1%Lubrol;「LM B」)のリニアなグラジエントによって溶出した。カラム流出は、280nm(タンパク質)および368nm(アクリジニウムエステル)においてUV吸収について連続的に測定した。タンパク質に未結合のアクリジニウムエステルは、カラムから未結合の形態で溶出し、したがって、標識抗体からは完全に分離された。抗体を約25分で溶出した。HPLC精製の標識抗体のタンパク質濃度(BCA方法)を測定した後、トレーサーをヤギIgG(ドイツ国Sigma社製)および1%BSAのPBS、pH7.2、1mg/ml中で0.1μg/mlの最終濃度まで希釈した。
研究対象のサンプル(ヒト血清)は、PBS、pH7.2、1mg/mlのヤギIgG 1%BSAで20倍まで希釈した。各ケースでは、その10μlをGA-CTまたはHR-CTへピペットで移した。次いで、4℃にて16時間振盪することにより(IKA機械式振盪機KS250ベーシック、400rpm)インキュベーションを行った。
以下の一連の測定は、上述のようにして調製した試験管を使用し、上述の方法を用いて実施した。
137個のコントロール血清(供血者血清、および-抗体濃度における年齢に関連する影響を回避するために-高齢者の家および本出願人の職員から得た様々な年齢の健常者の血清)を、コントロール血清として、GM1で被覆されたGA-CTを用いた抗体測定に使用した。AGM1で被覆されたGA-CTを用いた抗体測定については、これらの血清の一部の群(30検体の血清のみからなる)を測定した。
敗血症患者の血清89検体を試験血清として、GM1で被覆したGA-CTを用いて抗体測定に使用した。AGM1で被覆したGA-CTを用いた抗体測定については、敗血症患者の血清20検体(前述の血清89検体の一部の群)を用いた。各試験血清については、とりわけ、患者の病歴、サンプリングの時間、および敗血症の後の経過に関係した臨床資料があった。
図1〜4に概括した測定結果によって明らかなように、ガングリオシド(AGM1および/またはGM1)に結合するIgAクラスおよび/またはIgGクラスの抗体を測定したところ、調査した敗血症血清のほぼ全部(89検体のうち82検体、すなわち92%)で実質的に上昇したAGM1およびGM1の抗体力価が確認されたという事実により、コントロール群を敗血症患者から明らかに区別することができる。AGM1を被覆した試験管を使用したIgAの測定では、高感度で(敗血症患者はすべて陽性である)、かつ選択性のある(敗血症患者でない人が陽性として検出されない)測定結果が得られたことが明らかである(実施上の理由から、測定の数が、GM1を被覆した試験管を使用した89検体の測定ケースに比べてわずかに20検体と少なかったということが考慮すべき制限事項であるが)。
Claims (13)
- 敗血症および敗血症様全身感染症の早期診断および診断のための方法、予後診断、および重症度の評価ならびに経過の治療に伴う評価のための方法、ならびに敗血症の形成による敗血症の危険性の高い患者の危険性の評価のための方法であって、敗血症患者または敗血症の危険性のある患者の生化学的液体中の抗アシアロGM1抗体(抗AGM1抗体)およびそれと交差反応する抗体の存在および/または量を測定し、炎症性疾患または敗血症の存在、予想される進行、重症度、または治療の達成度に関して、あるいは敗血症の危険性のある患者の危険性に関して、それらの存在および/または量から結論を導くことを特徴とする方法。
- IgGおよび/またはIgAタイプの抗AGM1および/または抗GM1(自己)抗体を測定することを特徴とする、請求項1に記載の方法。
- 前記生化学的液体が血液、血液画分または分泌物であることを特徴とする、請求項1または2に記載の方法。
- 測定をサンドイッチタイプアッセイ、競合的タイプアッセイ、または凝集アッセイのリガンド結合アッセイにより実施することを特徴とする、請求項1から3のいずれか一項に記載の方法。
- 敗血症リスク患者の血液サンプル中の抗体の測定を、事前のin vivoおよび/またはin vitroにおける抗体産生の刺激の後に実施することを特徴とする、請求項1から4のいずれか一項に記載の方法。
- 多重パラメーター測定の一部として実施し、この場合、少なくとも1つのさらなる炎症パラメーターまたは感染パラメーターが同時に測定され、1セットの少なくとも2つの測定されたパラメーターの形態の測定結果が得られ、前記結果が敗血症の詳細な診断で評価されることを特徴とする、請求項1から5のいずれか一項に記載の方法。
- 抗ガングリオシド自己抗体に加えて、タンパク質プロカルシトニン、CA125、CA19-9、S100B、S100Aタンパク質、LASP-1、可溶性サイトケラチン断片、特にCYFRA 21、TPSおよび/または可溶性サイトケラチン-1断片(sCY1F)、ペプチドのインフラミンおよびCHP、ペプチドプロホルモン、グリシンN-アシル基転移酵素(GNAT)、カルバモイルリン酸シンテターゼ1(CPS1)およびC-反応性タンパク質(CRP)またはそれらの断片からなる群から選択される少なくとも1種のさらなるパラメーターを多重パラメーター測定の一部として測定することを特徴とする、請求項6に記載の方法。
- 多重パラメーター測定をチップ技術測定装置による、またはイムノクロマトグラフ測定装置による同時測定として実施することを特徴とする、請求項6または7に記載の方法。
- 測定装置を用いて得られた複合の測定結果の評価をコンピュータプログラムにより実施することを特徴とする、請求項8に記載の方法。
- 医療目的の供血の品質管理のための方法であって、供血のサンプル中の抗アシアロGM1抗体(抗AGM1抗体)およびそれと交差反応する抗体、特に抗GM1抗体の存在および/または量を測定し、かかる抗体の検出が陽性の場合には、供血を拒絶するか、測定された抗体を除去するためにアフィニティー精製にかけ、その後に行った更なる抗体測定の結果が陰性である場合のみ患者に投与する方法。
- 調査する供血が血液バンクの保存血または新しく得られた供血である、請求項10に記載の方法。
- ガングリオシド構造に擬似している構造特性を有する個々の物質または物質の混合物の成分を見出す方法および検出する方法であって、調査する個々の物質または物質の混合物を、特定のバインダーへの抗ガングリオシド抗体の結合及び結合抗体の検出に基づくアッセイ系で試験を行い、前記調査される物質の存在下で前記特定のバインダーに結合している前記抗体の競合的減少が、
- 前記物質の抗体阻害特性、または、
- ヒトにおいて抗AGM1抗体またはそれと交差反応する抗体の産生の開始を伴う抗原作用による前記物質の潜在的危険性
を示すものと見なされる方法。 - ヒトまたは動物の食物として用いられている、あるいは医学上の理由または美容上の理由でヒトに投与される個々の物質または物質の混合物を試験する、請求項12に記載の方法。
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EP02012516A EP1369693A1 (de) | 2002-06-04 | 2002-06-04 | Verfahren zur Sepsisdiagnose und zur Kontrolle von Spenderblut durch Bestimmung von anti-Asialo-Gangliosid-Antikörpern |
PCT/EP2003/003449 WO2003102586A1 (de) | 2002-06-04 | 2003-04-02 | Verfahren zur sepsisdiagnose durch bestimmung von anti-asialo-gangliosid-antikörpern |
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ATE293794T1 (de) * | 2001-12-04 | 2005-05-15 | Brahms Ag | Verfahren zur diagnose von sepsis unter bestimmung von ca 125 |
EP1318405B1 (de) * | 2001-12-04 | 2004-11-17 | B.R.A.H.M.S Aktiengesellschaft | Verfahren zur Diagnose von Sepsis unter Bestimmung löslicher Cytokeratinfragmente |
EP1355159A1 (de) * | 2002-04-19 | 2003-10-22 | B.R.A.H.M.S Aktiengesellschaft | Verwendungen von Fragmenten der Carbamoylphosphat Synthetase 1 (CPS 1) für die Diagnose von Entzündungserkrankungen und Sepsis |
EP1355158A1 (de) | 2002-04-19 | 2003-10-22 | B.R.A.H.M.S Aktiengesellschaft | Verfahren zur Diagnose von Entzündungserkrankungen und Infektionen unter Bestimmung des Phosphoproteins LASP-1 als Inflammationsmarker |
US20040096917A1 (en) * | 2002-11-12 | 2004-05-20 | Becton, Dickinson And Company | Diagnosis of sepsis or SIRS using biomarker profiles |
JP4643445B2 (ja) | 2002-11-12 | 2011-03-02 | ベクトン,ディッキンソン アンド カンパニー | バイオマーカープロフィールを使用した敗血症またはsirsの診断 |
CN1742087A (zh) | 2002-11-12 | 2006-03-01 | 贝克顿迪金森公司 | 使用生物标记谱诊断脓毒或者sirs |
DE102005011421A1 (de) * | 2005-03-11 | 2006-09-14 | Brahms Aktiengesellschaft | Bestimmung von kurzkettiger SRL-Alkoholdehydrogenase (DHRS4) als Biomarker für Entzündungen und Infektionen |
EP1869463A4 (en) | 2005-04-15 | 2010-05-05 | Becton Dickinson Co | SEPSIS DIAGNOSIS |
DE102007009751A1 (de) * | 2007-02-28 | 2008-09-04 | B.R.A.H.M.S Aktiengesellschaft | Verfahren zur selektiven Bestimmung von Procalcitonin 1-116 für diagnostische Zwecke sowie Antikörper und Kits zur Durchführung eines solchen Verfahrens |
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US11504071B2 (en) | 2018-04-10 | 2022-11-22 | Hill-Rom Services, Inc. | Patient risk assessment based on data from multiple sources in a healthcare facility |
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WO1999040433A1 (en) * | 1998-02-04 | 1999-08-12 | The Trustees Of The University Of Pennsylvania | Peptide mimotopes of carbohydrate antigens |
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