JP5930483B2 - 保存中の赤血球の品質及び生存を高める方法 - Google Patents
保存中の赤血球の品質及び生存を高める方法 Download PDFInfo
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N1/00—Preservation of bodies of humans or animals, or parts thereof
- A01N1/10—Preservation of living parts
- A01N1/12—Chemical aspects of preservation
- A01N1/122—Preservation or perfusion media
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N1/00—Preservation of bodies of humans or animals, or parts thereof
- A01N1/10—Preservation of living parts
- A01N1/14—Mechanical aspects of preservation; Apparatus or containers therefor
- A01N1/142—Apparatus
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/06—Animal cells or tissues; Human cells or tissues
- C12N5/0602—Vertebrate cells
- C12N5/0634—Cells from the blood or the immune system
- C12N5/0641—Erythrocytes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/02—Blood transfusion apparatus
- A61M1/0272—Apparatus for treatment of blood or blood constituents prior to or for conservation, e.g. freezing, drying or centrifuging
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- General Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Environmental Sciences (AREA)
- Biomedical Technology (AREA)
- Organic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Biotechnology (AREA)
- Genetics & Genomics (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Cell Biology (AREA)
- Microbiology (AREA)
- Immunology (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- Hematology (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Investigating Or Analysing Biological Materials (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Description
本発明にしたがって調製されなかった赤血球サンプルと比較して、本発明の赤血球サンプルの品質及び生存は高められる。これに関して、本赤血球サンプルは、本方法による処理の後9週間で0.7%未満の溶血、7週間で0.3%未満の溶血、及び3週間で0.2%未満の溶血を示した。赤血球の溶血の決定は当業界では日常的に実施され、任意の適切な方法を利用することができる。
ガス交換による酸素枯渇時のCO2の除去が、その後の無酸素保存中のRBCに有意な態様で影響を及ぼすか否かを決定した。三態様、分割ユニット実験を用い、12ユニット(AS3を有する6ユニット及びOFAS3を有する6ユニット)を評価した。前記は、100%Ar又は95%Ar/5%CO2気体混合物を用いて達成された酸素枯渇下の無酸素保存RBCユニットを比較した。コントロールとして、三態様分割ユニットの1つをAS3(NUTRICEL(Pall Corp.)としても知られている)(Hess et al. (2000)上掲書)添加物又はOFAS3(Dumont et al. (2009)上掲書)中で通常的に保存した。
本実験の主要目的には、9週間の冷蔵保存中に実施した、1週間毎の生化学的パラメーター(例えばヘモグロビン、細胞外pH(pHe)、内部pH(pHi)、二酸化炭素分圧(pCO2)、酸素分圧(pO2)、ヘマトクリット、ATP、2,3-DPGレベル、上清ヘモグロビン、グルコース、ラクテート、Na+、K+及び%溶血)の測定が含まれた。
本解析は対応3群試験で、コントロールサンプル、ArによりO2及びCO2を枯渇させたサンプル、及び95%Ar/5%CO2によりO2を枯渇させたサンプルを含んでいた。全血をCP2D(Pall)に収集し、2000xgで3分間遠心分離し、血漿を除去し、さらに添加剤溶液AS-3(Nutricel, Pall)又は実験的OFAS3を添加した。前記ユニットを均等に3つの600mLバッグに分けた。2つのバッグをAr又はAR/O2でガス交換し、150mLのPVCバッグに移し、Ar/H2又はAr/H2/CO2の存在下で1−6℃にて無酸素シリンダー中で保存した。1つのコントロールバッグはガス交換せずに同じ態様で処理し、周囲空気中で1−6℃で保存した。9週間の間バッグから毎週サンプルを採取し、各サンプルについて細胞内pH及び細胞外pH(pHi、pHe)を含む所定のin vitro試験を実施した。
赤血球細胞で二酸化炭素及び酸素を減少させることによって、ATPレベルは、酸素も二酸化炭素も枯渇されなかった赤血球サンプルのATPレベルと比較して9週間の間より高いレベルで維持された。2,3-DPGレベルは、酸素も二酸化炭素も枯渇されなかった赤血球サンプルの2,3-DPGレベルよりも高いレベルで3週間の間維持された。酸素枯渇は赤血球サンプルのATPレベルに対して正の影響を与え、二酸化炭素枯渇は2,3-DPGレベルに対して正の影響を与える。酸素及び二酸化炭素の両方を枯渇させたとき最適な結果が得られる。
Claims (18)
- 保存中の赤血球の品質及び生存を高める方法であって、
(a)赤血球サンプルから酸素及び二酸化炭素の両方を枯渇させる工程であって、前記枯渇赤血球サンプルがさらに酸性化添加剤溶液を含む前記工程;及び
(b)前記酸素及び二酸化炭素枯渇赤血球サンプルを保存のための酸素及び二酸化炭素非透過性環境へ移す工程を含み、それによって保存中の赤血球の品質及び生存を高める、前記方法。 - 赤血球サンプルが少なくとも3週間保存される、請求項1に記載の方法。
- 赤血球が0.2%未満の溶血を示す、請求項2に記載の方法。
- 赤血球サンプルが少なくとも7週間保存される、請求項1に記載の方法。
- 赤血球が0.3%未満の溶血を示す、請求項4に記載の方法。
- 赤血球サンプルが少なくとも9週間保存される、請求項1に記載の方法。
- 赤血球が0.7%未満の溶血を示す、請求項6に記載の方法。
- 赤血球サンプルから21−25℃で10mmHgのレベルまで酸素が枯渇される、請求項1に記載の方法。
- 赤血球サンプルから21−25℃で5mmHgのレベルまで二酸化炭素が枯渇される、請求項1に記載の方法。
- 酸性化添加剤溶液が5.5から7.0の範囲のpHを有する、請求項1に記載の方法。
- 酸性化添加剤溶液が6.25から6.75の範囲のpHを有する、請求項10に記載の方法。
- 保存のための酸素及び二酸化炭素非透過性環境が1℃〜6℃にある、請求項1に記載の方法。
- 赤血球サンプルが、全血、抗凝固処理全血、パック赤血球及び血漿分離赤血球から成る群から選択される、請求項1に記載の方法。
- 保存中の赤血球の品質及び生存を高める方法であって、
(a)赤血球サンプル中の酸素及び二酸化炭素を減少させる工程であって、前記酸素及び二酸化炭素を減少させた赤血球サンプルがさらに酸性化添加剤溶液を含む前記工程;及び
(b)前記酸素及び二酸化炭素減少赤血球サンプルを酸素及び二酸化炭素非透過性保存環境下で保存する工程を含み、
アデノシン三リン酸(ATP)及び2,3-ジホスホグリセリン酸(2,3-DPG)レベルが、酸素及び二酸化炭素非減少条件下での保存中に比較して酸素及び二酸化炭素非透過性保存環境下の保存中で改善される、前記方法。 - 赤血球サンプルから21−25℃で10mmHgのレベルに酸素が枯渇される、請求項14に記載の方法。
- 赤血球サンプルから21−25℃で5mmHgのレベルに二酸化炭素が枯渇される、請求項14に記載の方法。
- 赤血球サンプル中の二酸化炭素の減少が、二酸化炭素非枯渇赤血球サンプルと比較して2,3-DPGレベルを上昇させた、請求項14に記載の方法。
- 赤血球サンプル中の二酸化炭素及び酸素の減少が、酸素も二酸化炭素も枯渇されていない赤血球サンプル中のATPレベルよりも高いATPレベルを9週間維持させ、さらに酸素も二酸化炭素も枯渇されていない赤血球サンプル中の2,3-DPGレベルよりも高い2,3-DPGレベルを3週間維持させる、請求項14に記載の方法。
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EP2608816A1 (en) | 2013-07-03 |
ES2959120T3 (es) | 2024-02-20 |
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