JP5592339B2 - 鉄欠乏を検出する方法 - Google Patents
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- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
- G01N33/72—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing involving blood pigments, e.g. haemoglobin, bilirubin or other porphyrins; involving occult blood
- G01N33/721—Haemoglobin
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- G—PHYSICS
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- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
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Description
この出願は、その全体が参考として本明細書によって援用される2006年1月20日に出願された仮特許出願番号第60/760,520号の米国特許法第119条(e)項の下の利益を主張している。
本発明は、血液学パラメーターの機能を用いる鉄欠乏の検出の方法に関する。
鉄欠乏(ID)は、世界的基準で最も蔓延する単一の欠乏状態である。それは、影響を受ける個体が肉体的労働を行う能力を減少させ、そして子供における成長および学習を減少させるため、経済的に重要である。
Bain、B.J.、Blood Cells、A Practical Guide、第2版、Blackwell Science Ltd.、1995、第8章、197〜199頁 Eknoyan Gら、Continuous quality improvement:DQOI becomes K/DQOI and is updated. National Kidney Foundation’s Dialysis Outcomes Quality Initiative. Am J Kidney Dis.、2001 1月;37(1):179〜194; Anemia Management in Chronic Kidney Disease:Role of Factors Affecting Epoetin Responsiveness、ESCHBACH、J.、J Am Soc Nephrol 13:1412〜1414、2002 Thomasら、Biochemical Markers and Hematologic Indices in the Diagnosis of Functional Iron Deficiency、Clinical Chemistry 48:7、1066〜1076、2002 Revised European Best Practice Guidelines for the Managemant of Anaemia in Patients with Chronic Renal Failure、Locatelli、Fら、Nephrology and Dyalisis Transplantation、19巻2004年5月(補遺2)、Guideline III.2、ii22〜24頁 Revised European Best Practice Guidelines for the Management of Anaemia in Patients With Chronic Renal Failure、Locatelli、Fら、Nephrology and Dyalisis Transplantation、19巻2004年5月(補遺2)、Appendix B、ii39〜41頁 Machin S.J.ら、Functional Iron Deficiency and New Red Cell Parameters on the Sysmex XE−2100、ISLH 2001 Industry−Spondored Workshops、ISLH XIVth International Symposium、2001:およびLaboratory Diagnosis、Laboratory Hematology 2005、11:14〜23
1つの局面では、本発明は、鉄欠乏の検出の方法を提供する。
例えば、本発明は以下を提供する:
(項目1)
鉄欠乏を検出する方法であって:
(a)血液分析器で血液サンプルを分析し、そして赤血球の平均細胞ヘモグロビン(MCH)および平均細胞容量(MCV)を得る工程;
(b)該MCHおよび該MCVの関数として規定される鉄欠乏指数(IDI 1 )を得る工程;
(c)該IDI 1 を所定のIDI 1 鉄欠乏基準と比較する工程;ならびに
(d)該IDI 1 が該所定のIDI 1 鉄欠乏基準を満たす場合、鉄欠乏の指標を報告する工程、を包含する、方法。
(項目2)
前記IDI 1 が、以下の方程式:
(項目3)
前記a、bおよびcが、それぞれ−35.6、0.087および1.61である、項目2に記載の方法。
(項目4)
前記鉄欠乏が、絶対的鉄欠乏または機能的鉄欠乏を含む、項目1に記載の方法。
(項目5)
鉄欠乏を検出する方法であって:
(a)血液分析器で血液サンプルを分析し、そして赤血球の平均細胞ヘモグロビン濃度(MCHC)および平均細胞ヘモグロビン(MCH)を得る工程;
(b)該MCHCおよび該MCHの関数として規定される鉄欠乏指数(IDI 2 )を得る工程;
(c)該IDI 2 を所定のIDI 2 鉄欠乏基準と比較する工程;ならびに
(d)該IDI 2 が該所定のIDI 2 鉄欠乏基準を満たす場合、鉄欠乏の指標を報告する工程、
を包含する、方法。
(項目6)
前記IDI 2 が、以下の方程式:
(項目7)
前記i、jおよびkが、それぞれ−97.98、0.24および2.91である、項目6に記載の方法。
(項目8)
前記鉄欠乏が、絶対的鉄欠乏または機能的鉄欠乏を含む、項目5に記載の方法。
(項目9)
血液分析器で血液サンプルの鉄欠乏指数(IDI 1 )を得る方法であって:
(a)血液サンプルの第1のアリコートを血液希釈剤と混合して第1のサンプル混合物を形成し、該血液分析器で該第1のサンプルを分析し、そして赤血球の平均細胞容量(MCV)および赤血球濃度(RBC)を得る工程;
(b)該血液サンプルの第2のアリコートを試薬系と混合して第2のサンプル混合物を形成し、該血液分析器で該第2のサンプルを分析し、そして該血液サンプルのヘモグロビン濃度(Hgb)を得る工程;
(c)該RBCおよび該Hgbを用いて平均細胞ヘモグロビン(MCH)を得る工程;
(d)該MCVおよび該MCHを用いて該鉄欠乏指数(IDI 1 )を得る工程であって、該IDI 1 が該MCVおよび該MCHのロジスティック関数として規定される工程;ならびに
(e)該血液分析器で該血液サンプルの該IDI 1 を報告する工程、
を包含する、方法。
(項目10)
前記IDI 1 が、以下の方程式:
(項目11)
前記a、bおよびcが、それぞれ−35.6、0.087および1.61である、項目10に記載の方法。
(項目12)
血液分析器で血液サンプルの鉄欠乏指数(IDI 2 )を得る方法であって:
(a)血液サンプルの第1のアリコートを血液希釈剤と混合して第1のサンプル混合物を形成し、該血液分析器で該第1のサンプルを分析し、そして赤血球の平均細胞容量(MCV)および赤血球濃度(RBC)を得る工程;
(b)該血液サンプルの第2のアリコートを試薬系と混合し第2のサンプル混合物を形成し、該血液分析器で該第2のサンプルを分析し、そして該血液サンプルのヘモグロビン濃度(Hgb)を得る工程;
(c)該MCV、該RBCおよび該Hgbを用いて、平均細胞ヘモグロビン(MCH)および平均細胞ヘモグロビン濃度(MCHC)を得る工程;
(d)該MCHおよび該MCHCを用いて該鉄欠乏指数(IDI 2 )を得る工程であって、該IDI 2 が該MCHおよび該MCHCのロジスティック関数として規定される工程;ならびに
(e)該血液分析器で該血液サンプルの該IDI 2 を報告する工程、
を包含する、方法。
(項目13)
前記IDI 2 が、以下の式:
(項目14)
前記i、jおよびkが、それぞれ−97.98、0.24および2.91である、項目13に記載の方法。
1つの実施形態では、本発明は、平均細胞ヘモグロビン(MCH)および平均細胞容量(MCV)の関数として規定される鉄欠乏指数(IDI1)を用いる鉄欠乏の検出のための方法を提供する。本明細書中で用いられる鉄欠乏の用語は、絶対的鉄欠乏、および機能的鉄欠乏(FID)を含む。
247の臨床全血サンプルを、University College Hospital of Londonで、Coulter LH750およびBayer ADVIA 120血液分析器でそれぞれ分析した。すべての血液分析器を、それらの標準的な作動条件下で作動させ、そして操作マニュアルおよび研究のプロトコールに従って、製造業者により提供される較正物質を用いて較正した。
実施例1で採集したのと同じ血液サンプルの血液データは、鉄欠乏指数(IDI2)を用いる鉄欠乏の検出のためであった。IDI2は、Coulter LH750血液分析器から報告されたMCHおよびMCHCを用いて算出した。IDI2を、IDI2=exp(−97.78+0.24*MCH+2.91*MCHC)/(1+exp(−97.98+0.24*MCH)+2.91*MCHC)の方程式を用いて規定した。
Claims (5)
- 前記i、jおよびkが、それぞれ−97.98、0.24および2.91である、請求項1に記載の方法。
- 前記鉄欠乏が、絶対的鉄欠乏または機能的鉄欠乏を含む、請求項1に記載の方法。
- 血液分析器で血液サンプルの鉄欠乏指数(IDI2)を得る方法であって:
(a)血液サンプルの第1のアリコートを血液希釈剤と混合して第1のサンプル混合物を形成し、該血液分析器で該第1のサンプル混合物を分析し、そして赤血球の平均細胞容量(MCV)および赤血球濃度(RBC)を得る工程;
(b)該血液サンプルの第2のアリコートを試薬系と混合し第2のサンプル混合物を形成し、該血液分析器で該第2のサンプル混合物を分析し、そして該血液サンプルのヘモグロビン濃度(Hgb)を得る工程;
(c)該MCV、該RBCおよび該Hgbを用いて、平均細胞ヘモグロビン(MCH)および平均細胞ヘモグロビン濃度(MCHC)を得る工程;
(d)該MCHおよび該MCHCを用いて該鉄欠乏指数(IDI2)を得る工程であって、該IDI2が該MCHおよび該MCHCのロジスティック関数として規定され、該IDI 2 が、以下の方程式:
(e)該血液分析器で該血液サンプルの該IDI2を報告する工程、
を包含する、方法。 - 前記i、jおよびkが、それぞれ−97.98、0.24および2.91である、請求項4に記載の方法。
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WO2007084977A2 (en) | 2007-07-26 |
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US7361510B2 (en) | 2008-04-22 |
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JP2012042488A (ja) | 2012-03-01 |
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EP2016423B1 (en) | 2011-07-13 |
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EP1976541A2 (en) | 2008-10-08 |
WO2007084976A3 (en) | 2008-03-27 |
US7361512B2 (en) | 2008-04-22 |
EP2016423A2 (en) | 2009-01-21 |
EP1976541B1 (en) | 2011-07-13 |
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