JP6393739B2 - 尿サンプルの染色及び処理のための方法及び組成物 - Google Patents
尿サンプルの染色及び処理のための方法及び組成物 Download PDFInfo
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- JP6393739B2 JP6393739B2 JP2016502573A JP2016502573A JP6393739B2 JP 6393739 B2 JP6393739 B2 JP 6393739B2 JP 2016502573 A JP2016502573 A JP 2016502573A JP 2016502573 A JP2016502573 A JP 2016502573A JP 6393739 B2 JP6393739 B2 JP 6393739B2
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Description
本出願は、全内容が参照により本明細書に組み込まれている、「Analysis of Particles in Urine Samples」の題名で、2013年3月15日に出願された米国特許出願第61/799,014号による利益を請求している。
本開示は、概して粒子造影剤に関し、またより具体的には、尿サンプルなどの液体サンプル中の粒子を識別し、定量化するために、完全に又は部分的に自動化された装置で使用するための粒子造影剤組成物に関する。
尿沈渣の測定の自動化には、自動フロー顕微鏡(例えば、フロータイプの自動顕微鏡iQ(登録商標)200、Iris Diagnostics)が使用されうる。これらの種類の装置では、予備濃縮なしで、尿サンプルは、平型フローセルに導入され、サンプルがフローセルの中を流れる間に、画像を撮影して保存する。しかしながら、尿沈渣は、その形態が多様化しており、多くの沈渣が損傷を受けており、したがって、画像の決定を良好な精度で行うことは実現が困難である。赤血球(とりわけ異形赤血球)、細菌及び結晶などの小型の沈渣を、外部ユーザーの確認なしに良好な精度で決定することは特に困難である。
例えば、本発明は以下の項目を提供する。
(項目1)
染色条件下で50μM〜500μMの濃度になるのに十分な量で存在するクリスタルバイオレットと、
5 PD Lytic及びサポニンからなる群から選択される透過剤と、を含む、自動粒子分析システムにおいて撮像するために泌尿器液体サンプルの粒子を染色するための粒子造影剤組成物。
(項目2)
前記透過剤が、染色条件下で約3.5重量%の濃度になるのに十分な量で存在する5 PD Lyticである、項目1に記載の組成物。
(項目3)
前記クリスタルバイオレットが、染色条件下で約86μMの濃度になるのに十分な量で存在する、項目2に記載の組成物。
(項目4)
少なくとも二塩基性リン酸ナトリウム及び一塩基性リン酸カリウムを含むリン酸緩衝生理食塩水を更に含む、項目3に記載の組成物。
(項目5)
抗菌物質を更に含む、項目1に記載の組成物。
(項目6)
前記クリスタルバイオレットが、染色条件下で約86μMの濃度になるのに十分な量で存在し、
前記クリスタルバイオレットが、およそ80%以上の純度であり、及び
前記抗菌物質が、Proclin 300である、項目5に記載の組成物。
(項目7)
塩化ナトリウムと、
少なくとも二塩基性リン酸ナトリウム及び一塩基性リン酸カリウムを含むリン酸緩衝生理食塩水と、を更に含む、項目6に記載の組成物。
(項目8)
項目1に記載の粒子造影剤組成物と泌尿器液体サンプルとを混合して、粒子造影剤組成物の最終濃度がサンプル混合物の重量で約1%〜約20%であるサンプル混合物を得ることと、
前記サンプル混合物を、セ氏20度より高い温度で、90秒未満の間、インキュベートすることと、を含む、自動粒子分析システムにおいて使用して撮像するために泌尿器液体サンプルの粒子を処理する方法。
(項目9)
前記5 PD Lyticが、染色条件下で約3.5重量%の濃度になるのに十分な量で存在し、
前記クリスタルバイオレットが、染色条件下で約86μMの濃度になるのに十分な量で存在し、
前記サンプル混合物の重量による粒子造影剤組成物の最終濃度が、約10%〜約20%であり、及び
前記サンプル混合物をインキュベートすることが、前記サンプル混合物を、30℃〜50℃で、60秒未満の間、インキュベートすることを含む、項目8に記載の方法。
(項目10)
前記サンプル混合物の重量による粒子造影剤組成物の最終濃度が約15%であり、
前記サンプル混合物をインキュベートすることが、前記サンプル混合物を、30℃〜50℃で、60秒未満の間、インキュベートすることを含む、項目9に記載の方法。
(項目11)
前記サンプル混合物をインキュベートすることが、前記サンプル混合物を、40℃〜50℃で、30秒〜35秒、インキュベートすることを含む、項目10に記載の方法。
(項目12)
前記クリスタルバイオレットが、およそ80%以上の純度であり、
粒子造影剤組成物が、Proclin 300を更に含む、項目11に記載の方法。
(項目13)
粒子造影剤組成物が、塩化ナトリウムと、少なくとも二塩基性リン酸ナトリウム及び一塩基性リン酸カリウムを含むリン酸緩衝生理食塩水とを更に含む、項目12に記載の方法。
本明細書で開示される組成物及び方法は、Iris Internationalによって販売されているIQ尿検査など、多くの異なるタイプの尿検査画像システムと共に使用され得る。特に、本明細書に記載の組成物及び方法は、フローセル分析などの画像ベースのサンプル分析と共に使用され得る。このようなフローセル分析の例として、慣習的な公知のフローサイトメトリー法を挙げることができる。更に、本明細書に記載の組成物及び方法は、以下に詳述され、参照により本明細書に組み込まれる2014年3月17日に出願された題名「Flowcell,Sheath Fluid,and Autofocus Systems and Methods For Particle Analysis In Urine Samples」、出願番号__/___,___、の共同出願に更に記載されているフローセル分析システム及び方法と共に有利に使用され得る。
図2は、一実施形態による粒子造影剤組成物の調製の概略図である。ブロック208で、粒子造影剤202と透過剤204とを混合して、粒子造影剤組成物210を作製する。いくつかの実施形態では、任意選択の固定剤206も混合する。ブロック208での混合は、いかなる順序で行っても、またいかなる好適なやり方で行ってもよい。
粒子造影剤202は、尿サンプル中の粒子に視覚的識別性を生じることができる任意の造影剤であってもよい。様々な造影剤が、細胞の様々な部分に反応又は集中することから、これらの特性を利用して、特定の部分又は領域を明示するのに役立てることができる。このような造影剤(例えば染色液)の例として、アルシアンブルー及びアルシアンブルー86(PAS中性及び酸性の粘液物質)、アリザリンレッドS、アルラレッドAC(アゾ染料赤色染料#40)、アナリンブルー(シュウ酸で増強される繊毛)、オーラミン0、アズールB、アズールC、ビスマルクブラウン、ブリリアント・ブルーFCF(クマシー・ブルー)、ブリリアントクレシルブルー、ブリリアント・グリーン、カルミウム(カルミン酸及びカリウムミョウバンから構成される赤色核染料)、コンゴレッド、クロラゾールブラックE(核ブラック、サイトグレー、グリコーゲンピンク)、クレシルバイオレットアセテート、ダローレッド、エオシンブルー、エリトロシンB(赤色染料#3)、エチルエオシン、ファストグリーンFCF(緑色染料#3)、フチン(Fuchin)塩基性(核及び鞭毛)、フルオレセイン(マーキュロクロム)、ギムザ−末梢血塗抹標本、ハリスヘマトキシリン−退行性核染色液、インジゴカルミン(青色染料#2)、ヤーヌスグリーンB(ミトコンドリア)、ジェンナー染色液(末梢血塗抹標本)、ライトグリーンイエローイッシュ、マクニール(四色血液染色液)、マラカイトグリーン、メチルオレンジ、マルチウスイエロー、マイヤーのヘマトキシリン−進行性核染色液、メチルバイオレット2B、メテナミン銀−過ヨウ素酸(Peroidic acid)、メチレンバイオレット、メイ・グリュンヴァルド−血液学的染色液、MTT−ホルマザン染色液、ムシカルミン−原発腫瘍染色液、ニュートラルレッド、ニグロシン、ナイルブルーA、ヌクレア・ファーストレッドC.I.60760、Napthal AS、ニトロ・ブルー・テトラゾリウム−ファストホルマザン染料、オレンジG、オレンジII、オルセイン、パパニコロー染色EAS−ブリリアント細胞質染色液、パラローザニリン、パラローザニリン、過ヨウ素酸・シッフ−(PAS、特異的炭水化物染色液)、フロキシンB(Phyloxine)、プロタルゴールS、ピロニンB、ピロニンY、レザズリン、ロマノフスキー−ギムザ、ローズベンガル、サフラニンO、ズダンブラックB、ズダンIII(アルファ−ナフトールがミエロイド顆粒を染色する)、スダンIV−トリグリセリドを染色、タルトラジン(アゾ染料黄色#5)、チオニン−メタクロマチンを染色、トリフェニルテトラゾリウム、TTC−フォルマザンレッド染料、トルイジンブルーO、ライト染色液(従来の血液塗抹標本のための固定剤、緩衝液及び染色液)、並びにライト・ギムザが挙げられる。
いくつかの実施形態において、透過剤204は、粒子の膜及び/又は壁の透過剤であってもよい。透過剤204は、界面活性剤及び/又は表面張力調整剤を含み得る。いくつかの実施形態において、透過剤204は、サポニンを含み得る。代替実施形態において、透過剤204は、第4級アンモニウム塩、非イオン性界面活性剤、及び両性イオン性界面活性剤のうち少なくとも1つを含み得る。透過剤は、粒子造影剤202の細胞内含有物への近づきやすさを高めるために、細胞の透過性を変化させることができる。透過剤を選択して、迅速な一段階染色手順を可能にするのに十分な量で含めることができる。
いくつかの実施形態において、固定剤206は、染色及び撮像の間、所望の細胞及び細胞構造が確実に分解しないように選択することができる。固定剤の例として、グルタルアルデヒド;ホルムアルデヒド;ジアゾリジニル尿素;架橋剤;等張食塩水中のピクリン酸アンモニア(例えば、メチレンブルー染色用);エチルアルコール;メタノール(例えば、室温、−20℃又は−70℃で);Heidenhain’s Susa−HgCl2、NaClトリクロロ酢酸、ホルマリン;ブワン−ピクリン酸、ホルマリン、酢酸;Duboseq−Brazil−ブワン(80% EtOH含有);カルノア−EtOH、クロロホルム、酢酸;ツェンカー−HgCl2、K2CrO7、NaSO4・H2O;アセトカルミン;Gatensby’s−クロム酸、四酸化オスミウム、NaCl;Baker’s−ホルマリン、CaCl2;Smith’s−K2Cr2O7、ホルマリン、酢酸;1%メチルグリーン、1%酢酸;フェノール、ホルマリン、グリセロール、ゲンチアナバイオレット;シャウディン−HgCl2、EtOH、酢酸;Champy’s−クロム酸、K2CrO7、OsO4;Fleming’s−クロム酸、OsO4、酢酸;ホルモル−銀−ホルムアルデヒド、AgNO3;Streck’s Tissue Fixative−ブロノポール、ジアゾリジニル尿素、ZnSO4 ・7H2O、クエン酸ナトリウム;PBS中1%イミダゾリジニル尿素;グリオキサル:Glyofix、Prefer、Safefix、Histochoice;グライダント−ヒダントイン;ジメチロール尿素;ヒドロキシメチルグリシンナトリウム;カルノフスキー;塩化第二水銀(B−5);Hollande’sなどを挙げることができる。
いくつかの実施形態において、任意選択の追加の構成要素212は、任意選択によりブロック208で混合して、粒子造影剤組成物210にすることができる。追加の構成要素212の例として、pH調整剤、緩衝剤、糖、糖アルコール、浸透圧調整剤、タンパク質安定化剤、抗菌物質、イオン強度調整剤、界面活性剤、及びキレート剤などを挙げることができる。いくつかの実施形態では、粒子造影剤組成物210にリン酸緩衝生理食塩水を含めると、驚くほど有効な結果を実現することができる。いくつかの実施形態において、粒子造影剤組成物210は、pHを3又は約3に維持するためにpH調整剤を含んでもよい。いくつかの実施形態において、尿サンプルのpH又はその付近のpHを維持するために、粒子造影剤組成物210にpH調整剤を含めると、驚くほど有効な結果を実現することができる。
図3は、一実施形態による迅速な一段階染色プロセス300のフローチャートである。迅速な一段階染色プロセス300は、いくつかの下位工程を含み得るが、用語「一段階」は、染色手順の間、サンプルを複数の異なる溶液に導入する必要がないことを証明するために使用される。粒子造影剤組成物210は、図2を参照して上述したように、ブロック302で調製される。任意選択により、いくつかの実施形態において、任意の粒子造影剤202などの構成要素は、ブロック306で精製され得る。粒子造影剤202の精製により、サンプルとの接触時に形成される沈降物のレベルを低下させることができ、これによりバックグラウンドを低下させて、画像ベースの尿サンプル分析の結果を改善し、画像若しくは湿式マウント、又は手作業で行った顕微鏡検査を更に見直す必要を減らすことができる。
以下の実施例について記載するように、上で開示した実施形態を得るために、多数の染色組成物及び方法を試験し、改良した。
Claims (14)
- 染色条件下で50μM〜500μMの濃度になるのに十分な量で存在するクリスタルバイオレットと、
サポニンを含む透過剤と、を含む、自動粒子分析システムにおいて撮像するために泌尿器液体サンプルの粒子を染色するための粒子造影剤組成物。 - 前記透過剤が、染色条件下で約3.5重量%の濃度になるのに十分な量で存在する、請求項1に記載の組成物。
- 前記クリスタルバイオレットが、染色条件下で約86μMの濃度になるのに十分な量で存在する、請求項2に記載の組成物。
- 少なくとも二塩基性リン酸ナトリウム及び一塩基性リン酸カリウムを含むリン酸緩衝生理食塩水を更に含む、請求項3に記載の組成物。
- 抗菌物質を更に含む、請求項1に記載の組成物。
- 前記クリスタルバイオレットが、染色条件下で約86μMの濃度になるのに十分な量で存在し、及び
前記クリスタルバイオレットが、およそ80%以上の純度である、請求項5に記載の組成物。 - 塩化ナトリウムと、
少なくとも二塩基性リン酸ナトリウム及び一塩基性リン酸カリウムを含むリン酸緩衝生理食塩水と、を更に含む、請求項6に記載の組成物。 - 請求項1に記載の粒子造影剤組成物と泌尿器液体サンプルとを混合して、粒子造影剤組成物の最終濃度がサンプル混合物の重量で約1%〜約20%であるサンプル混合物を得ることと、
前記サンプル混合物を、セ氏20度より高い温度で、90秒未満の間、インキュベートすることと、を含む、自動粒子分析システムにおいて使用して撮像するために泌尿器液体サンプルの粒子を処理する方法。 - 前記透過剤が、染色条件下で約3.5重量%の濃度になるのに十分な量で存在し、
前記クリスタルバイオレットが、染色条件下で約86μMの濃度になるのに十分な量で存在し、
前記サンプル混合物の重量による粒子造影剤組成物の最終濃度が、約10%〜約20%であり、及び
前記サンプル混合物をインキュベートすることが、前記サンプル混合物を、30℃〜50℃で、60秒未満の間、インキュベートすることを含む、請求項8に記載の方法。 - 前記サンプル混合物の重量による粒子造影剤組成物の最終濃度が約15%であり、
前記サンプル混合物をインキュベートすることが、前記サンプル混合物を、30℃〜50℃で、60秒未満の間、インキュベートすることを含む、請求項9に記載の方法。 - 前記サンプル混合物をインキュベートすることが、前記サンプル混合物を、40℃〜50℃で、30秒〜35秒、インキュベートすることを含む、請求項10に記載の方法。
- 前記クリスタルバイオレットが、およそ80%以上の純度であり、
粒子造影剤組成物が、抗菌物質を更に含む、請求項11に記載の方法。 - 粒子造影剤組成物が、塩化ナトリウムと、少なくとも二塩基性リン酸ナトリウム及び一塩基性リン酸カリウムを含むリン酸緩衝生理食塩水とを更に含む、請求項12に記載の方法。
- 前記サポニンが、染色条件下で約0.01mg/L〜約100mg/Lの濃度になるのに十分な量で存在する、請求項1に記載の方法。
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CN105102960A (zh) | 2015-11-25 |
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BR112015023425A2 (pt) | 2017-07-18 |
US9322753B2 (en) | 2016-04-26 |
ES2658692T3 (es) | 2018-03-12 |
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