WO2011105257A1 - 赤血球濃厚液用添加剤および医療用容器 - Google Patents
赤血球濃厚液用添加剤および医療用容器 Download PDFInfo
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- WO2011105257A1 WO2011105257A1 PCT/JP2011/053209 JP2011053209W WO2011105257A1 WO 2011105257 A1 WO2011105257 A1 WO 2011105257A1 JP 2011053209 W JP2011053209 W JP 2011053209W WO 2011105257 A1 WO2011105257 A1 WO 2011105257A1
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- WIPO (PCT)
- Prior art keywords
- erythrocyte
- additive
- surfactant
- solution
- molecular structure
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- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/1397—Single layer [continuous layer]
Definitions
- the present invention relates to an additive for erythrocyte concentrate used for long-term preservation of erythrocyte concentrate and a medical container.
- Patent Documents 1 and 2 can provide a sufficient effect in suppressing the loss of platelets, but do not provide a sufficient effect in red blood cell preservation. That is, vitamin E has a lower hemolysis suppressing effect than DEHP, and cannot be said to be excellent in erythrocyte storage.
- the present invention has been devised to solve such problems, and its purpose is to provide an additive for erythrocyte concentrate and a medical container that have a high effect of suppressing hemolysis and excellent erythrocyte storage stability. It is in.
- an additive for erythrocyte concentrate according to the present invention is an additive for erythrocyte concentrate in which a hemolysis inhibitor and a surfactant are added to an erythrocyte preservation solution, the surfactant
- the HLB value of the surfactant is 13 or more, and the number of oxyethylene groups in the hydrophilic portion in the molecular structure of the surfactant is 20 or more.
- the hemolysis inhibitory action of the hemolysis inhibitor and the surfactant functions synergistically by adding both the hemolysis inhibitor and the surfactant to the erythrocyte preservation solution. That is, the hemolysis inhibitor has an action of coating the outer surface of the erythrocyte membrane, thereby suppressing the destruction of the erythrocyte membrane. Further, the surfactant has an action of promoting uniform dispersion of the hemolysis inhibitor in the erythrocyte preservation solution and covering the erythrocyte membrane with the hemolysis inhibitor. Further, since the surfactant has a predetermined HLB value and the hydrophilic portion of the surfactant has a predetermined number of oxyethylene groups, it is possible to suppress the destruction of the erythrocyte membrane even with the surfactant alone.
- the hydrophilic part in the molecular structure of the surfactant is composed of polyoxyethylene sorbitan, and the erythrocyte preservation solution is mannitol, glucose, adenine, phosphate, citrate and A mixed solution containing sodium chloride is preferred.
- the additive for erythrocyte concentrate is a mixed solution containing mannitol, glucose, adenine and sodium chloride in which the hydrophilic part in the molecular structure of the surfactant is made of polyoxyethylene sorbitan, and the erythrocyte preservation solution is Is preferred.
- the additive for erythrocyte concentrate is a hydrophilic portion in the molecular structure of the surfactant made of polyoxyethylene sorbitan, and the erythrocyte preservation solution contains sorbitol, glucose, adenine, guanosine, phosphate and sodium chloride. It is preferable to be a mixed solution.
- the additive for erythrocyte concentrate is a hydrophilic part in the molecular structure of the surfactant made of polyoxyethylene, and the erythrocyte preservation solution contains mannitol, glucose, adenine, phosphate, citric acid and sodium chloride. It is preferable to be a mixed solution.
- the additive for erythrocyte concentrate includes a hydrophilic portion in the molecular structure of the surfactant made of polyoxyethylene, and the erythrocyte preservation solution contains sorbitol, glucose, adenine, guanosine, phosphate, and sodium chloride.
- a mixed solution is preferred.
- the surfactant and the erythrocyte storage solution function synergistically by comprising a surfactant having a predetermined structure and an erythrocyte storage solution of a predetermined composition, and further disruption of the erythrocyte membrane. It is suppressed.
- the additive for erythrocyte concentrate according to the present invention is characterized in that the hemolysis inhibitor is vitamin E.
- the additive for erythrocyte concentrate according to the present invention is characterized in that the vitamin E is an acetate ester compound.
- the hemolysis inhibitor is vitamin E, particularly an acetate ester compound of vitamin E, so that the destruction of the erythrocyte membrane is further suppressed by the antioxidant action of vitamin E and the affinity action of the erythrocyte membrane with lipids.
- the medical container according to the present invention is characterized in that the above-mentioned additive for erythrocyte concentrate is filled in the container body. According to the said structure, destruction of the whole blood or CRC erythrocyte membrane accommodated in the inside of a container main body is suppressed by filling the inside of a container main body with the said additive for red blood cell concentrates.
- the hemolysis suppressing effect equivalent to or higher than that in the case of using the medical container made of vinyl chloride resin plasticized by conventional DEHP can be obtained.
- the erythrocyte preservability is excellent.
- An additive for erythrocyte concentrate (hereinafter referred to as additive if necessary) is a product obtained by adding a hemolysis inhibitor and a surfactant to an erythrocyte preservation solution, and the surfactant has a predetermined molecular structure. It is.
- the additive further suppresses the destruction (hemolysis) of the erythrocyte membrane compared to conventional DEHP (medical container composed of vinyl chloride resin plasticized by DEHP). Can do.
- the addition amount of the additive is 40 to 60 mL per 100 mL of erythrocyte concentrate, that is, 20 to 30 mL per 100 mL of collected blood. Each configuration will be described below.
- the hemolysis inhibitor is for preventing destruction of the erythrocyte membrane by an antioxidant action and an affinity action of the erythrocyte membrane with lipids.
- vitamin E 7-tetradecene, 8-octadecene, 9 -Unsaturated chain hydrocarbon compounds selected from the group consisting of eicosene and squalene are preferred.
- Vitamin E includes tocopherols such as ⁇ -tocopherol, ⁇ -tocopherol, ⁇ -tocopherol, and ⁇ -tocopherol, and tocotrienols such as ⁇ -tocotrienol, ⁇ -tocotrienol, ⁇ -tocotrienol, and ⁇ -tocotrienol.
- ⁇ -Tocopherol is preferred.
- Vitamin E may be an ester compound of these tocopherols or tocotrienols, and is preferably an acetate compound, specifically tocopherol acetate.
- the hemolysis inhibitor preferably has a concentration in the erythrocyte preparation of 25 to 100 ppm (see FIG. 5), when added together with the surfactant, the concentration of the hemolysis inhibitor in the additive is 75 to 300 ppm. It is preferable. When the concentration is less than 75 ppm, it is difficult to suppress the destruction of the erythrocyte membrane. Specifically, the hemolysis suppression rate tends to decrease, in other words, the amount of plasma Hb tends to increase. On the other hand, when the concentration exceeds 300 ppm, no significant improvement is observed in the effect of suppressing the destruction of the red blood cell membrane, and the cost tends to increase.
- a surfactant has a function of uniformly dispersing a hemolysis inhibitor in an erythrocyte preservation solution and promoting the coating of the erythrocyte membrane with the hemolysis inhibitor, and can suppress the destruction of the erythrocyte membrane alone. is there. Therefore, the surfactant has an HLB value of 13 or more, preferably 13 to 20, and the number of oxyethylene groups (EO number) of the hydrophilic part in the molecular structure is 20 or more, preferably 20 to 40. .
- the surfactant is preferably in the first form in which the hydrophilic part of its molecular structure is made of polyoxyethylene (PEO) or in the second form made of polyoxyethylene sorbitan (PEO sorbitan).
- the HLB value is less than 13, since the surfactant is not dispersed in the additive, the destruction of the erythrocyte membrane cannot be suppressed.
- the EO number is less than 20, the molecular weight of the hydrophilic part of the surfactant is low, so that the destruction of the erythrocyte membrane cannot be suppressed.
- the HLB value exceeds 20, or when the EO number exceeds 40, notable improvement is not seen in the suppression of erythrocyte membrane destruction, and the cost tends to increase.
- surfactant in the first form examples include polyoxyethylene oleyl ether (Emulgen (registered trademark) 430), polyoxyethylene lauryl ether (Emulgen 130K), and the like (see Table 1).
- surfactant in the second form examples include polyoxyethylene sorbitan monooleate (Tween (registered trademark) 80, polyoxyethylene sorbitan monostearate (Tween 60), polyoxyethylene sorbitan monolaurate (Tween 20), and the like. (See Table 1).
- the surfactant preferably has a concentration in the erythrocyte preparation of 100 to 300 ppm (see FIG. 5), when added together with the hemolysis inhibitor, the concentration of the surfactant in the additive is 300 to 900 ppm. It is preferable. When the concentration is less than 300 ppm, it is difficult to suppress the destruction of the erythrocyte membrane. Specifically, the hemolysis suppression rate tends to decrease, in other words, the amount of plasma Hb tends to increase. On the other hand, when the concentration exceeds 900 ppm, it is difficult to suppress the destruction of the red blood cell membrane, and the cost tends to increase.
- erythrocyte storage solution As the erythrocyte storage solution, a conventionally known storage solution used for long-term storage of erythrocyte concentrate is used. As erythrocyte preservation solution, ACD solution, CPD solution, MAP solution, SAGM solution, OPTISOL (registered trademark) (AS-5), ADSOL (AS-1), Nutricel (AS-3), PAGG-S, SAGP-maltose Etc. In particular, MAP liquid, SAGM liquid or PAGG-S is preferable.
- the MAP solution is a mixed solution containing mannitol, glucose, adenine, phosphate, citrate and sodium chloride.
- the SAGM solution is a mixed solution containing mannitol, glucose, adenine and sodium chloride.
- PAGG-S is a mixed solution containing sorbitol, glucose, adenine, guanosine, phosphate and sodium chloride.
- the added amount of the red blood cell preservation solution is 40 to 60 mL per 100 mL of red blood cell concentrate, that is, 20 to 30 mL per 100 mL of collected blood.
- the addition amount is less than the lower limit, it becomes difficult to suppress the destruction of the erythrocyte membrane.
- the addition amount exceeds the upper limit value no remarkable improvement is observed in the suppression of erythrocyte membrane destruction, and the cost tends to increase.
- the medical container is characterized in that an additive for erythrocyte concentrate is filled in the container body. And the container main body is produced in a container shape by fusing the peripheral portions of two resin sheets made of polyolefin, vinyl chloride resin or the like. Further, the medical container according to the present invention corresponds to the drug solution filling bag 107 of the blood bag system 100 as shown in FIG.
- the blood bag system 100 was transferred via a blood collection tube 101a having a blood collection needle 102 at the tip, a blood collection bag 103 filled with blood collected from a blood donor (donor), and transferred from the blood collection bag 103 via a tube 101b.
- Blood processing filter 110 that separates predetermined blood components (white blood cells and platelets) from blood (whole blood) and blood processing filter 110 that has passed through blood processing filter 110 via tube 101c are collected.
- Blood storage bag 105 Blood storage bag 105, blood storage bag 106 to which blood components (plasma) centrifuged in blood storage bag 105 are transferred through tubes 101d and 101e and branch tube 104, and the addition for the erythrocyte concentrate
- the blood collection bag 103, the blood storage bags 105 and 106, and the drug solution filling bag 107 have a capacity of about 100 to 600 mL, for example.
- a discharge port 108 is formed on the upper side of the blood collection bag 103, the blood storage bags 105 and 106, and the drug solution filling bag 107.
- a label 109 for indicating the blood components to be filled is affixed to the blood collection bag 103, the blood storage bags 105 and 106, and the drug solution filling bag 107.
- a channel sealing member (not shown) is installed in the tubes 101b to 101f as necessary.
- the channel sealing member is a member that is installed in a state where the channel in the tube is blocked (sealed) and opens the channel by breaking.
- erythrocyte preservation solution erythrocyte preservation solution
- MAP solution erythrocyte preservation solution
- Additives 1 to 3 and 8 to 11 were used.
- polyethylene glycol molecular weight 1000
- No. 1 shown in Table 2 was added.
- erythrocyte preparation 20 mL of each additive and 40 mL of erythrocyte concentrate are mixed to obtain an erythrocyte preparation, which is placed at 4 ° C. in a mini bag made of vinyl chloride resin (PVC) plasticized with tri (2-ethylhexyl) trimelliate (TOTM). And stored for 5 weeks. At this time, the concentration of the hemolysis inhibitor in the erythrocyte preparation is 50 ppm, and the concentration of the surfactant is 300 ppm. Further, the erythrocyte preparation to which no additive was added was similarly stored in a PVC minibag plasticized with di-2-ethylhexyl phthalate (DEHP). Before storage, after 2 weeks storage, after 4 weeks storage and after 5 weeks storage, the amount of free Hb in plasma was measured by the following LCV method, and erythrocyte storage stability was evaluated according to the following evaluation criteria. The results are shown in FIG.
- the amount of free Hb (hemoglobin) in plasma is measured by the following procedure. (1) After dissolving 20 mg of Leuco Crystal Violet in 75 mL of acetone, 20 mL of acetic acid and 25 mL of RO water are added and mixed by stirring, and this is used as a coloring reagent. (2) 30 mL of RO water is added to 1 mL of 30% by mass of hydrogen peroxide and mixed, and this is used as a coloring substrate solution. (3) After storage of the erythrocyte preparation is completed, the erythrocyte preparation is centrifuged to collect a supernatant, which is used as a sample for measuring the amount of free hemoglobin in plasma.
- a hemoglobin standard solution (Hemocon-N manufactured by Alfresa Pharma) is diluted with RO water to simultaneously prepare a hemoglobin standard solution (calibration curve sample) for preparing a calibration curve having a concentration of 2 to 300 mg / dL.
- a hemoglobin standard solution (calibration curve sample) for preparing a calibration curve having a concentration of 2 to 300 mg / dL.
- (4) Add 6 mL of the coloring reagent, the measurement sample, and 25 ⁇ L of the calibration curve sample to the test tube, and stir well.
- 1 mL of the coloring substrate solution is added and stirred, and then incubated for 20 minutes in a 37 ° C. water flow type thermostatic bath.
- the absorbance at 590 nm is measured using a spectrophotometer (U-3010, Hitachi, Ltd.), and the hemoglobin concentration is calculated from the value of the calibration curve sample measured at the same time to obtain the amount of free hemoglobin in plasma. .
- MAP solution red blood cell preservation solution
- surfactants selected from the surfactants shown in Table 1 and 15 mg of hemolysis inhibitor (vitamin E: tocopherol acetate) were added together, and Table 2 No.
- Additives 4-7 were used.
- 20 mL of each additive and 40 mL of erythrocyte concentrate are mixed to obtain an erythrocyte preparation, which is placed at 4 ° C. in a mini bag made of vinyl chloride resin (PVC) plasticized with tri (2-ethylhexyl) trimelliate (TOTM). And stored for 5 weeks.
- PVC vinyl chloride resin
- TOTM tri (2-ethylhexyl trimelliate
- the concentration of the hemolysis inhibitor in the erythrocyte preparation is 50 ppm, and the concentration of the surfactant is 200 ppm.
- the erythrocyte preparation to which no additive was added was similarly stored in a PVC minibag plasticized with di-2-ethylhexyl phthalate (DEHP).
- DEHP di-2-ethylhexyl phthalate
- the following mini bag test was performed to evaluate the erythrocyte storage stability of the additive.
- SAGM solution erythrocyte preservation solution
- 60 mg of three kinds of surfactants selected from the surfactants shown in Table 1 and 15 mg of hemolysis inhibitor (vitamin E: tocopherol acetate) were added together, and No. shown in Table 2 .
- the additives 1, 4, and 9 were used.
- 20 mL of each additive and 40 mL of erythrocyte concentrate are mixed to obtain an erythrocyte preparation, which is placed at 4 ° C. in a mini bag made of vinyl chloride resin (PVC) plasticized with tri (2-ethylhexyl) trimelliate (TOTM).
- PVC vinyl chloride resin
- TOTM tri (2-ethylhexyl trimelliate
- the concentration of the hemolysis inhibitor in the erythrocyte preparation is 50 ppm, and the concentration of the surfactant is 200 ppm.
- the erythrocyte preparation to which no additive was added was similarly stored in a PVC minibag plasticized with di-2-ethylhexyl phthalate (DEHP).
- DEHP di-2-ethylhexyl phthalate
- the following mini bag test was performed to evaluate the erythrocyte storage stability of the additive.
- ⁇ Mini bag test> To 100 mL of red blood cell preservation solution (PAGG-S), 60 mg of three types of surfactants selected from the surfactants shown in Table 1 and 15 mg of hemolysis inhibitor (vitamin E: tocopherol acetate) are added together, and shown in Table 2. No. The additives 1, 4, and 9 were used. Thereafter, 20 mL of each additive and 40 mL of erythrocyte concentrate are mixed to obtain an erythrocyte preparation, which is placed at 4 ° C. in a mini bag made of vinyl chloride resin (PVC) plasticized with tri (2-ethylhexyl) trimelliate (TOTM). And stored for 5 weeks.
- PVC vinyl chloride resin
- TOTM tri (2-ethylhexyl trimelliate
- the concentration of the hemolysis inhibitor in the erythrocyte preparation is 50 ppm, and the concentration of the surfactant is 200 ppm.
- the erythrocyte preparation to which no additive was added was similarly stored in a PVC minibag plasticized with di-2-ethylhexyl phthalate (DEHP).
- DEHP di-2-ethylhexyl phthalate
- Examples (Nos. 1 to 3, 8, and 9) satisfying the requirements of the surfactant of the present invention had good erythrocyte storage.
- the comparative examples (Nos. 4 to 7, 10, 11) have an HLB value of less than the lower limit and the surfactant does not disperse in the additive (in water), and the EO number is less than the lower limit of the surface activity. Since the molecular weight of the hydrophilic part of the agent is at least one of low, the destruction of the red blood cell membrane could not be suppressed, and the red blood cell storage stability was poor.
- the reference examples (Nos. 12 and 13) also had poor red blood cell preservation.
- the additive of the example was superior in red blood cell storage stability as compared with the additive of the comparative example.
- the additive of the example is superior in erythrocyte storage compared to the case where the erythrocyte preparation is stored in a medical container (DEHP elution concentration 30 ppm) made of vinyl chloride resin plasticized by conventional DEHP. It was confirmed that
- MAP solution red blood cell preservation solution
- 7.5 mg, 15 mg and 30 mg of hemolysis inhibitor vitamin E: tocopherol acetate
- 30 mg, 60 mg and 90 mg of surfactant Tween 80
- 20 mL of each additive and 40 mL of erythrocyte concentrate were mixed to prepare an erythrocyte preparation, and a minibag test was performed in the same manner as in Example 1 to measure the amount of free Hb in plasma.
- Table 3 shows the concentrations of the hemolysis inhibitor and the surfactant in the erythrocyte preparation.
- the additive of the present invention is plasticized by conventional DEHP when 25 to 100 ppm of hemolysis inhibitor and 100 to 300 ppm of surfactant are added (Example No. 14 to 18). Confirmed to have the same or better effect on erythrocyte preservation compared to the case where the erythrocyte preparation was stored in a medical container (DEHP elution concentration 30 ppm) composed of a modified vinyl chloride resin (Reference Example No. 19) It was done.
- Blood Processing filter 100 Blood Bag System 103 Blood Collection Bag 105 Blood Storage Bag 106 Blood Storage Bag 107 Chemical Solution Filling Bag (Medical Container) 110 Blood processing filter
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Abstract
Description
前記構成によれば、溶血防止剤がビタミンE、特にビタミンEの酢酸エステル化合物であることによって、ビタミンEの抗酸化作用および赤血球膜の脂質との親和作用等で赤血球膜の破壊がさらに抑制される。
前記構成によれば、前記の赤血球濃厚液用添加剤が容器本体の内部に充填されていることによって、容器本体の内部に収容される全血またはCRCの赤血球膜の破壊が抑制される。
赤血球濃厚液用添加剤(以下、必要に応じて添加剤と称す)は、溶血防止剤と、界面活性剤とを赤血球保存液に添加したもので、界面活性剤が所定の分子構造を有するものである。添加剤がこのような構成であることによって、従来のDEHP(DEHPにより可塑化された塩化ビニル樹脂で構成された医療用容器)と比べて、赤血球膜の破壊(溶血)をより一層抑制することができる。なお、添加剤の添加量は、赤血球濃厚液100mLあたり40~60mL、すなわち、採血量100mLあたり20~30mLである。以下、各構成について説明する。
溶血防止剤は、抗酸化作用および赤血球膜の脂質との親和作用等によって赤血球膜の破壊を防止するためのもので、具体的には、ビタミンE、または、7-テトラデセン、8-オクタデセン、9-エイコセンおよびスクアレンからなる群から選ばれた不飽和鎖式炭化水素化合物が好ましい。また、ビタミンEは、α-トコフェロール、β-トコフェロール、γ-トコフェロール、δ-トコフェロール等のトコフェロール類、α-トコトリエノール、β-トコトリエノール、γ-トコトリエノール、δ-トコトリエノール等のトコトリエノール類などがあるが、α-トコフェロールが好ましい。また、ビタミンEは、これらのトコフェロールまたはトコトリエノールのエステル化合物であってもよく、酢酸エステル化合物、具体的には酢酸トコフェロールが好ましい。
界面活性剤は、赤血球保存液への溶血防止剤の均一な分散と、溶血防止剤による赤血球膜の被覆を助長する作用を有すると共に、単独でも赤血球膜の破壊を抑制することが可能なものである。そのために、界面活性剤は、そのHLB値が13以上、好ましくは13~20で、かつ、その分子構造中の親水部のオキシエチレン基数(EO数)が20以上、好ましくは20~40である。また、界面活性剤は、その分子構造の親水部がポリオキシエチレン(PEO)からなる第1形態、または、ポリオキシエチレンソルビタン(PEOソルビタン)からなる第2形態が好ましい。
赤血球保存液は、赤血球濃厚液の長期保存のために用いられている従来公知の保存液が用いられる。赤血球保存液としては、ACD液、CPD液、MAP液、SAGM液、OPTISOL(登録商標)(AS-5)、ADSOL(AS-1)、Nutricel(AS-3)、PAGG-S、SAGP-maltose等が挙げられる。特に、MAP液、SAGM液またはPAGG-Sが好ましい。ここで、MAP液とは、マンニトール、グルコース、アデニン、リン酸塩、クエン酸塩および塩化ナトリウムを含有する混合溶液である。また、SAGM液とは、マンニトール、グルコース、アデニンおよび塩化ナトリウムを含有する混合溶液である。さらに、PAGG-Sとは、ソルビトール、グルコース、アデニン、グアノシン、リン酸塩および塩化ナトリウムを含有する混合溶液である。
医療用容器は、赤血球濃厚液用添加剤が容器本体の内部に充填されていることを特徴とする。そして、容器本体は、ポリオレフィン、塩化ビニル樹脂等からなる2枚の樹脂シートの周縁部を融着して容器状に作製したものである。また、本発明に係る医療用容器は、図6に示すように、血液バッグシステム100の薬液充填バッグ107に相当する。
また、採血バッグ103、血液保存バッグ105、106および薬液充填バッグ107の上部側には、排出口108が形成されている。また、採血バッグ103、血液保存バッグ105、106および薬液充填バッグ107には、その充填される血液成分を示すためのラベル109が貼り付けられている。また、チューブ101b~101fには、図示しない流路封止部材が必要に応じて設置されている。流路封止部材とは、チューブ内の流路を遮断(封止)した状態で設置され、破断により流路を開通させる部材である。
<ミニバッグテスト>
赤血球保存液(MAP液)100mLに、表1に示す界面活性剤から選択した7種の界面活性剤90mgと溶血防止剤(ビタミンE:酢酸トコフェロール)15mgを共に添加して、表2に示すNo.1~3、8~11の添加剤とした。また、界面活性剤の代わりとして、ポリエチレングリコール(分子量1000)を使用したものも添加して、表2に示すNo.12の添加剤とした。さらに、界面活性剤を使用せず、溶血防止剤(ビタミンE)のみを添加して、表2に示すNo.13の添加剤とした。その後、各添加剤20mLと赤血球濃厚液40mLを混和して赤血球製剤とし、トリメリット酸トリ(2-エチルヘキシル)(TOTM)で可塑化された塩化ビニル樹脂(PVC)製のミニバッグ内で4℃を保ちながら5週間保存した。この時の赤血球製剤中の溶血防止剤の濃度は50ppm、界面活性剤の濃度は300ppmである。さらに、添加剤が添加されていない赤血球製剤をジ-2-エチルヘキシルフタレート(DEHP)で可塑化されたPVC製のミニバッグ内で同様にして保存した。
保存前、2週間保存後、4週間保存後および5週間保存後の赤血球製剤について、以下のLCV法で血漿中遊離Hb量を測定し、以下の評価基準で赤血球保存性を評価した。その結果を図1、表2に示す。
血漿中遊離Hb(ヘモグロビン)量は、以下の手順で測定する。
(1)Leuco Crystal Violet20mgをアセトン75mLに溶解させた後、酢酸20mL、RO水25mLを加えて攪拌混合し、これを発色試薬として使用する。
(2)30質量%の過酸化水素水1mLにRO水30mLを加えて混合し、これを発色基質液として使用する。
(3)赤血球製剤の保存終了後、赤血球製剤を遠心して上澄を採取し、これを血漿中遊離ヘモグロビン量の測定検体とする。また、ヘモグロビン標準液(アルフレッサファーマ製ヘモコン-N)をRO水で希釈して、2~300mg/dLの濃度の検量線作製用ヘモグロビン標準液(検量線サンプル)も同時に調製する。
(4)試験管に発色試薬6mL、測定検体および検量線サンプル25μLを加えてよく攪拌する。
(5)さらに、発色基質液1mLを加えて攪拌後、37℃の水流式恒温槽中で20分間インキュベートする。
(6)インキュベート終了後、分光光度計(U-3010、日立製作所)を用いて590nmの吸光度を測定し、同時に測定した検量線サンプルの値からヘモグロビン濃度を計算し、血漿中遊離ヘモグロビン量とする。
5週間保存後の血漿中遊離Hb量が、DEHP可塑化PVC製のミニバッグで保存した際の血漿中遊離Hb量に比べて少ない場合を赤血球保存性が良好(○)、多い場合を赤血球保存性が不良(×)とした。
<ミニバッグテスト>
赤血球保存液(SAGM液)100mLに、表1に示す界面活性剤から選択した3種の界面活性剤60mgと溶血防止剤(ビタミンE:酢酸トコフェロール)15mgを共に添加して、表2に示すNo.1、4、9の添加剤とした。その後、各添加剤20mLと赤血球濃厚液40mLを混和して赤血球製剤とし、トリメリット酸トリ(2-エチルヘキシル)(TOTM)で可塑化された塩化ビニル樹脂(PVC)製のミニバッグ内で4℃を保ちながら5週間保存した。この時の赤血球製剤中の溶血防止剤の濃度は50ppm、界面活性剤の濃度は200ppmである。さらに、添加剤が添加されていない赤血球製剤をジ-2-エチルヘキシルフタレート(DEHP)で可塑化されたPVC製のミニバッグ内で同様にして保存した。前記の実施例1と同様にして、赤血球製剤の血漿中遊離Hb量を測定し、赤血球保存性を評価した。その結果を図3、表2に示す。
<ミニバッグテスト>
赤血球保存液(PAGG-S)100mLに、表1に示す界面活性剤から選択した3種の界面活性剤60mgと溶血防止剤(ビタミンE:酢酸トコフェロール)15mgを共に添加して、表2に示すNo.1、4、9の添加剤とした。その後、各添加剤20mLと赤血球濃厚液40mLを混和して赤血球製剤とし、トリメリット酸トリ(2-エチルヘキシル)(TOTM)で可塑化された塩化ビニル樹脂(PVC)製のミニバッグ内で4℃を保ちながら5週間保存した。この時の赤血球製剤中の溶血防止剤の濃度は50ppm、界面活性剤の濃度は200ppmである。さらに、添加剤が添加されていない赤血球製剤をジ-2-エチルヘキシルフタレート(DEHP)で可塑化されたPVC製のミニバッグ内で同様にして保存した。前記の実施例1と同様にして、赤血球製剤の血漿中遊離Hb量を測定し、赤血球保存性を評価した。その結果を図4、表2に示す。
103 採血バッグ
105 血液保存バッグ
106 血液保存バッグ
107 薬液充填バッグ(医療用容器)
110 血液処理フィルター
Claims (9)
- 溶血防止剤と、界面活性剤とを赤血球保存液に添加した赤血球濃厚液用添加剤であって、
前記界面活性剤のHLB値が13以上で、かつ、前記界面活性剤の分子構造中の親水部のオキシエチレン基数が20以上であることを特徴とする赤血球濃厚液用添加剤。 - 前記界面活性剤の分子構造中の親水部がポリオキシエチレンソルビタンからなり、
前記赤血球保存液が、マンニトール、グルコース、アデニン、リン酸塩、クエン酸塩および塩化ナトリウムを含有する混合溶液であることを特徴とする請求の範囲第1項に記載の赤血球濃厚液用添加剤。 - 前記界面活性剤の分子構造中の親水部がポリオキシエチレンソルビタンからなり、
前記赤血球保存液が、マンニトール、グルコース、アデニンおよび塩化ナトリウムを含有する混合溶液であることを特徴とする請求の範囲第1項に記載の赤血球濃厚液用添加剤。 - 前記界面活性剤の分子構造中の親水部がポリオキシエチレンソルビタンからなり、
前記赤血球保存液が、ソルビトール、グルコース、アデニン、グアノシン、リン酸塩および塩化ナトリウムを含有する混合溶液であることを特徴とする請求の範囲第1項に記載の赤血球濃厚液用添加剤。 - 前記界面活性剤の分子構造中の親水部がポリオキシエチレンからなり、
前記赤血球保存液が、マンニトール、グルコース、アデニン、リン酸塩、クエン酸塩および塩化ナトリウムを含有する混合溶液であることを特徴とする請求の範囲第1項に記載の赤血球濃厚液用添加剤。 - 前記界面活性剤の分子構造中の親水部がポリオキシエチレンからなり、
前記赤血球保存液が、ソルビトール、グルコース、アデニン、グアノシン、リン酸塩および塩化ナトリウムを含有する混合溶液であることを特徴とする請求の範囲第1項に記載の赤血球濃厚液用添加剤。 - 前記溶血防止剤が、ビタミンEであることを特徴とする請求の範囲第1項ないし第6項のいずれか一項に記載の赤血球濃厚液用添加剤。
- 前記ビタミンEが、酢酸エステル化合物であることを特徴とする請求の範囲第7項に記載の赤血球濃厚液用添加剤。
- 請求の範囲第1項ないし第6項のいずれか一項に記載の赤血球濃厚液用添加剤が容器本体の内部に充填されていることを特徴とする医療用容器。
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JP2012501749A JP5504332B2 (ja) | 2010-02-23 | 2011-02-16 | 赤血球濃厚液用添加剤および医療用容器 |
US13/580,641 US8889237B2 (en) | 2010-02-23 | 2011-02-16 | Excipient system and medical container for erythrocyte enriched liquid |
EP11747221.7A EP2540306B1 (en) | 2010-02-23 | 2011-02-16 | Additive for erythrocyte-rich solution, and container for medical purposes |
CN201180010801.0A CN102770144B (zh) | 2010-02-23 | 2011-02-16 | 红血球浓厚液用添加剂以及医疗用容器 |
RU2012140269/15A RU2550917C2 (ru) | 2010-02-23 | 2011-02-16 | Добавка и медицинский контейнер для обогащенной эритроцитами жидкости |
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JP2015159855A (ja) * | 2014-02-26 | 2015-09-07 | テルモ株式会社 | 血液バッグシステム |
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JP6412696B2 (ja) * | 2014-02-10 | 2018-10-24 | テルモ株式会社 | 血清調製方法および器具 |
US20220054637A1 (en) * | 2018-11-07 | 2022-02-24 | Terumo Kabushiki Kaisha | Method for producing a blood product |
CN110108531B (zh) * | 2019-05-14 | 2022-02-11 | 深圳天深医疗器械有限公司 | 一种排除医学检测中血细胞干扰的方法 |
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US20120321827A1 (en) | 2012-12-20 |
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US8889237B2 (en) | 2014-11-18 |
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