JP5871792B2 - 自動血液分析器において、レーザーからの前方散乱を用いることによる、赤血球細胞を白血球細胞から判別する方法 - Google Patents
自動血液分析器において、レーザーからの前方散乱を用いることによる、赤血球細胞を白血球細胞から判別する方法 Download PDFInfo
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Description
(1)大きさ、または0°チャネル:この検出チャネルは、分析器のプラットフォームによって、2種類の異なる量を測定する
(a)ALL:消光、すなわち、主要な光線からの光損失(例えば、CELL−DYN(R)Sapphire(R)において);または
(b)SAS:レーザー光の伝搬軸に対し、約1°から約3°の範囲の角度での光散乱(例えば、CELL−DYN(R)Ruby(R)において)
(2)IAS、複雑性、7°または10°チャネル:レーザー光の伝搬軸に対し、約3°から約10°のの範囲の角度での光散乱。
(3)PSS、多葉性、または90°チャネル:垂直偏光を有するレーザー光に対して直交する光散乱。
(4)DSS、粒度、または90°脱偏光チャネル:細胞の付随要素との相互作用によって、水平の偏光を獲得した、レーザー光に対して直交する光散乱。
この実施例は、405nmの波長を有するレーザーを用いる試作品の分析器で実施される、溶解していない全血サンプルにおける赤血球細胞、白血球細胞、血小板の分離を示す。結果は図3に示されている。血小板、赤血球細胞、白血球細胞が明確に分離されていることがわかる。白血球細胞の数は少なすぎて、白血球細胞の差を知ることはできない。より多くの白血球細胞の事象を集めるために、IASに関し、約8000に対応するIASトリガ値が必要である。
この実施例は、405nmの波長を有するレーザーを用いる試作品の分析器で実施される、白血球細胞の差を示し、この方法では、溶解剤を用いない。結果は図4に示され、単球は、文字「M」で示された領域にあり、リンパ球は、文字「L」で示された領域にあり、好中球は、文字「N」で示された領域にあり、好酸球は、文字「E」で示された領域にある。この分類は、クラスタリングアルゴリズムを用いずに行われる。
この実施例は、CELL−DYN(R)Ruby(R)血液分析器およびCELL−DYN(R)Sapphire(R)血液分析器による、白血球細胞の計数を妨害する、溶解耐性のある赤血球細胞を用いて直面する課題が、405nmの波長を有するレーザーを用いると顕著に改良されることを示す。CELL−DYN(R)Ruby(R)血液分析器は、633nmの波長を使用する。CELL−DYN(R)Sapphire(R)血液分析器は、488nmの波長を使用する。同じ血液サンプルを、4種類の別個のアッセイを用い、3種類の異なる分析器で操作し、結果は、図5から図8を参照しつつ、以下に記載する。
Claims (23)
- (a)全血サンプルが第1の流量および第1の流量とは異なる第2の流量の両方で導入されるフローセルと;
(b)前記フローセルに光を向けるための、400nmから450nmの範囲の波長を有するレーザーと;
(c)複数のインフロー光学測定チャネルで、細胞による光の散乱を検出するための複数の検出器と;
(d)データ分析ワークステーションとを含み、データ分析ワークステーションが、
i.血液サンプルの第1の容量を第1の流量でフローセルに導入し、複数の検出器を用いて複数の第1流量光学データを発生させるようにレーザーをフローセルに向け、
ii.同じ血液サンプルの第2の容量を第2の流量でフローセルに導入し、複数の検出器を用いて複数の第2流量光学データを発生させるようにレーザーをフローセルに向け、
iii.第1流量光学データと、異なる種類の白血球細胞を識別し、計数するための少なくとも1つのアルゴリズムとを用いて、血液サンプル中の白血球細胞を識別し、計数し;
iv.第2流量光学データを用いて、血液サンプル中の赤血球細胞及び血小板を識別し、計数する、
ためのプログラムを含む、血液分析器。 - 複数の検出器が、軸方向光損失(ALL)検出器、小角散乱(SAS)検出器、中間角散乱(IAS)検出器、偏光側方散乱(PSS)検出器、非偏光側方散乱(DSS)検出器、および蛍光検出器のうちの1つ以上を含む、請求項1に記載の血液分析器。
- 前記複数の検出器が、0°から1°の角度で、光の消光測定値を得るための検出器を含む、請求項1に記載の血液分析器。
- 前記複数の検出器が、3°から10°の角度で、光散乱の測定値を得るための検出器を含む、請求項1に記載の血液分析器。
- 前記分析器において、少なくとも1つのインフロー光学測定の閾値が、白血球細胞からのすべてのシグナルを定性し、すべての他のシグナルを判別するように設定される、請求項1に記載の血液分析器。
- プログラムが、複数の検出器から発生された複数の光学データを用いた個々の赤血球細胞中のヘモグロビン濃度の測定値、および血液サンプル中の赤血球細胞の濃度を決定するための赤血球細胞数の測定値を用いて、血液サンプルのヘモグロビン濃度を概算するための命令をさらに備える、請求項1に記載の血液分析器。
- (a)複数のインフロー光学測定値を測定することが可能であり、フローセルと、400nmから450nmの範囲の波長を有するレーザーとが設置された、自動血液分析器を与えるステップと;
(b)血液サンプルを希釈するための希釈剤を与えるステップと;
(c)全血サンプルを与えるステップと;
(d)希釈剤と全血サンプルとを混合するステップと;
(e)サンプルの第1の容量を第1の流量でフローセルに導入し、複数の第1流量光学データを発生させるようにレーザーをフローセルに向けるステップと、
(f)第1流量光学データと、異なる種類の白血球細胞を識別し、計数するための少なくとも1つのアルゴリズムとを用いて、サンプル中の白血球細胞を識別し、計数するステップと;
(g)サンプルの第2の容量を第1の流量とは異なる第2の流量でフローセルに導入し、複数の第2流量光学データを発生させるようにレーザーをフローセルに向けるステップと、
(h)第2流量光学データを用いて、サンプル中の赤血球細胞および血小板を識別し、計数するステップと
を含む、血液サンプル中の細胞を識別し、正確に計数する方法。 - (i)複数の光学データを用いて個々の赤血球細胞中のヘモグロビン濃度を測定し、全血サンプル中の赤血球細胞の濃度を決定するために赤血球細胞数を測定することにより、血液サンプルのヘモグロビン濃度を測定するステップをさらに含む、請求項7に記載の方法。
- 前記自動血液分析器に、400nmから430nmの範囲の波長を有するレーザーが取り付けられている、請求項7に記載の方法。
- サンプル中の白血球細胞を識別し、計数するステップが、ヘモグロビン分析器が赤血球細胞からの信号を無視することを可能とする中間角散乱(IAS)トリガを使用することを含む、請求項7に記載の方法。
- 血液サンプルを分析するためのデータを格納するステップをさらに含む、請求項7に記載の方法。
- 血液サンプルを分析するための結果を報告するステップをさらに含む、請求項7に記載の方法。
- インフロー光学測定が、消光、光散乱、蛍光の測定を含む、請求項7に記載の方法。
- 少なくとも1つの消光測定値が、0°から1°の角度で得られる、請求項8に記載の方法。
- 少なくとも1つのインフロー光学測定の閾値が、白血球細胞からのすべてのシグナルを定性し、すべての他のシグナルを判別するように設定される、請求項7に記載の方法。
- 少なくとも1つのインフロー光学測定値が、3°から10°で散乱する光から得られる、請求項7に記載の方法。
- (a)赤芽球の核を核染色で染色するステップと;
(b)核染色から得られる消光、光散乱、蛍光の測定のうち、少なくとも1つを用いることによって赤芽球を検出するステップと;
(c)赤芽球細胞と、他の細胞集合との分離を分析する1つ以上のアルゴリズムによって、赤芽球細胞を識別し、計数するステップとをさらに含む、請求項7に記載の方法。 - 血液分析器を操作するために検索可能な指示を含み、
i.血液サンプルの第1の容量を第1の流量でフローセルに導入し、複数の検出器を用いて複数の第1流量光学データを発生させるようにレーザーをフローセルに向け、
ii.同じ血液サンプルの第2の容量を第1の流量とは異なる第2の流量でフローセルに導入し、複数の検出器を用いて複数の第2流量光学データを発生させるようにレーザーをフローセルに向け、
iii.第1流量光学データと、異なるタイプの白血球細胞を識別し、計数するための少なくとも1つのアルゴリズムとを用いて、血液サンプル中の白血球細胞を識別し、計数し、
iv.第2流量光学データを用いて、血液サンプル中の赤血球細胞および血小板を識別し、計数する、
ためのプログラムが格納された、物理的なコンピューターで読み取り可能な媒体。 - 第1の流量が、5マイクロリッター/秒以下である、請求項1に記載の血液分析器。
- 第2の流量が、0.5マイクロリッター/秒以上である、請求項1に記載の血液分析器。
- 第1の流量が、第2の流量よりも少なくとも10倍大きい、請求項1に記載の血液分析器。
- 第1の流量が、50,000白血球細胞/秒までの注入速度で血液サンプルの第1の容量をフローセル中へと導入する、請求項1に記載の血液分析器。
- 第2の流量が、50,000から300,000赤血球細胞/秒の範囲の注入速度で、血液サンプルの第2の容量をフローセル中へと導入する、請求項1に記載の血液分析器。
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2010
- 2010-04-26 WO PCT/US2010/032429 patent/WO2010126838A1/en active Application Filing
- 2010-04-26 CA CA2759392A patent/CA2759392A1/en not_active Abandoned
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US11193875B2 (en) | 2021-12-07 |
CA2759392A1 (en) | 2010-11-04 |
US20170276591A1 (en) | 2017-09-28 |
JP2012525589A (ja) | 2012-10-22 |
US8906309B2 (en) | 2014-12-09 |
US9267931B2 (en) | 2016-02-23 |
EP2425241A1 (en) | 2012-03-07 |
WO2010126838A1 (en) | 2010-11-04 |
EP2425241A4 (en) | 2015-05-13 |
US20160258857A1 (en) | 2016-09-08 |
US20100273168A1 (en) | 2010-10-28 |
US20150160189A1 (en) | 2015-06-11 |
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