WO2004012750A1 - 血小板多血漿の調製方法 - Google Patents
血小板多血漿の調製方法 Download PDFInfo
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- WO2004012750A1 WO2004012750A1 PCT/JP2003/009795 JP0309795W WO2004012750A1 WO 2004012750 A1 WO2004012750 A1 WO 2004012750A1 JP 0309795 W JP0309795 W JP 0309795W WO 2004012750 A1 WO2004012750 A1 WO 2004012750A1
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- rich plasma
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K35/00—Medicinal preparations containing materials or reaction products thereof with undetermined constitution
- A61K35/12—Materials from mammals; Compositions comprising non-specified tissues or cells; Compositions comprising non-embryonic stem cells; Genetically modified cells
- A61K35/14—Blood; Artificial blood
- A61K35/16—Blood plasma; Blood serum
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P17/00—Drugs for dermatological disorders
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P17/00—Drugs for dermatological disorders
- A61P17/02—Drugs for dermatological disorders for treating wounds, ulcers, burns, scars, keloids, or the like
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P19/00—Drugs for skeletal disorders
- A61P19/08—Drugs for skeletal disorders for bone diseases, e.g. rachitism, Paget's disease
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
-
- 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
-
- 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
- A61M2202/00—Special media to be introduced, removed or treated
- A61M2202/04—Liquids
- A61M2202/0413—Blood
- A61M2202/0415—Plasma
-
- 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
- A61M2202/00—Special media to be introduced, removed or treated
- A61M2202/04—Liquids
- A61M2202/0413—Blood
- A61M2202/0427—Platelets; Thrombocytes
Definitions
- the present invention relates to platelet-rich plasma used in the medical field and a method for preparing the same.
- Platelet-rich plasma used for clinical tests is collected from the median vein of the forearm,
- kits have been sold to easily obtain PRP used to promote tissue healing.
- the conventional method of obtaining PRP basically uses a centrifugal separation technique (Takashi Hosokawa et al., Dental Outlook, Vol. 100, No. 6, 1230-1243, 2002), and the above operation is complicated. Improvement is enough There was no. In fact, the complexity of the operation is not the real feeling of the present inventors alone, and Hosokawa et al. Also specify in the description of FIG. 12 on page 1239 of the above-mentioned paper that "the operation is somewhat complicated". Furthermore, PRP obtained by such a centrifugation method is sufficient for the separation of erythrocytes, but the leukocytes contained in whole blood are also separated. However, some important plasma components such as fibrinogen were sometimes centrifuged.
- platelet-rich plasma used as an agent for promoting postoperative hemostasis and wound healing are that there are few red blood cells that delay tissue healing, that there are many platelets, and that platelet activity is high. It is well-maintained and contains many blood components such as leukocytes and fibrinogen in addition to platelets, and the development of a method for easily obtaining such highly active platelet-rich plasma has been desired. Disclosure of the invention
- An object of the present invention is to easily obtain and provide platelet-rich plasma having high activity.
- the present inventors have conducted intensive studies and found that when a water-soluble polymer compound or a pharmacologically acceptable salt thereof is added to plasma containing red blood cells such as whole blood, platelet-rich plasma can be separated quickly and easily. As much as possible, the platelet-rich plasma thus obtained was found to exhibit an extremely high tissue healing activity as compared with that obtained by the conventional method, and the present invention was completed.
- a method for preparing platelet-rich plasma comprising a step of selectively agglutinating and sedimenting erythrocytes from blood,
- a method for preparing platelet-rich plasma comprising a step of adding a water-soluble polymer compound to blood.
- polyamino acid is at least one selected from polyglutamic acid, polyaspartic acid, polihistidine and polyasparagine,
- the pharmacologically acceptable salt of the amino acid or amino acid constituting the polyamino acid is at least one selected from glutamic acid, aspartic acid, histidine and asparagine, or a pharmacologically acceptable salt thereof.
- the acidic polysaccharide and Z or a pharmacologically acceptable salt thereof is at least one selected from dextran derivatives, glycosaminodalican, cellulose derivatives, chitosan derivatives, galacturonic acid and alginic acid. Or the preparation method according to the above item 7, which is a pharmacologically acceptable salt thereof,
- a platelet-rich plasma prepared by any of the methods described in the above items 1 to 14, 16; a tissue plate Z or an organ repair promoting agent containing the platelet-rich plasma according to the above item 15.
- Tissue or organ repair promoter containing platelet-rich plasma described in 15 above an additive for bone formation around dental implants, bone or artificial bone transplantation to bone defects
- water-soluble polymer compounds used to prepare platelet-rich plasma by a method including the step of adding a water-soluble polymer compound to blood contain at least one or more of the following components Platelet-rich plasma preparation reagent or reagent kit:
- a kit for preparing a platelet-rich plasma comprising the reagent or the reagent kit according to the item 19 and the instrument according to the item 20.
- FIG. 1 is a schematic diagram of a differential interference microscopy photograph of peripheral blood (Example 1).
- FIG. 2 is a schematic diagram of a differential interference micrograph of a peripheral blood supernatant (Example
- FIG. 3 is a schematic diagram of an image of the supernatant obtained from Sample 2 (Example 1).
- Fig. 4 is a schematic diagram of the image of the supernatant of Sample 1 in which blood coagulation was observed. Example 1).
- FIG. 5 is a schematic diagram of an image of Sample 4 (Example 1).
- FIG. 6 is a graph showing the effect when various polyamino acids were added and allowed to stand for 1 hour (Example 4).
- FIG. 7 is a graph showing the effect when each weight of hyaluronic acid was added and allowed to stand for 40 minutes (Example 5).
- FIG. 8 is a view showing the results when various water-soluble polymers were added and allowed to stand for 30 minutes (Example 7).
- FIG. 9 is a graph showing the results when various water-soluble polymers were added and allowed to stand for 30 minutes (Example 8).
- FIG. 10 is a view showing the wound healing effect of the method of the present invention PRP (Experimental Example 4).
- FIG. 11 is a view showing the wound healing effect of the method PRP of the present invention and the wound healing effect of the conventional method PRP 4 days after the operation (Experimental Example 5).
- FIG. 12 is a diagram showing the wound healing effect of the conventional PRP and the addition of leukocytes to the conventional PRP on the fourth day after the operation (Experimental Example 6). Explanation of reference numerals
- the platelet-rich plasma of the present invention desirably contains not only platelets but also plasma components containing a large amount of fibrinogen, and more desirably blood components including leukocytes.
- Platelets adhere and aggregate to damaged subendothelial tissue to form thrombi, and play a very important role in hemostasis and in the storage and release of substances that migrate and induce differentiation of other cells.
- Fibrin is involved in the final stage of blood coagulation, which results from the action of thrombin on fiprinogen in plasma. Furthermore, it is also important as a scaffold for cell infiltration and cell differentiation for tissue repair.
- Leukocytes also prevent bacteria and harmful microorganisms from entering, have an immune function and a bactericidal function, and promote tissue repair by protecting damaged tissues.
- monocyte Z macrophages are known to also play an important role in tissue repair.
- Platelets rapidly lose their function over time after stimulation or blood collection. For this reason, it was not possible to obtain platelets with high functions by a technique other than centrifugation, which can be separated in a short time with little stimulation on platelets. Red blood cells sediment gradually when whole blood is allowed to stand, but since this rate is usually very slow, plasma containing platelets can be obtained even if left unattended for more than several hours, except for pathological blood such as during severe inflammatory reactions. It is known that it cannot be done.
- the method for preparing platelet-rich plasma of the present invention allows sedimentation of erythrocytes from whole blood in a selective and promoting manner, and contains not only platelets but also components essential for tissue repair, such as leukocytes and fibrinogen, in the supernatant. Can be obtained.
- the step of agglutinating and sedimenting erythrocytes in a selective promoting manner means that the whole blood is treated within 3 hours, preferably within 2 hours, more preferably within 1 hour, more preferably within 30 minutes after the start of the treatment.
- 80% or more of red blood cells contained in Preferably, it refers to a step of causing sedimentation by agglutinating 90% or more to obtain platelet-rich plasma of at least 15% or more of the total blood volume.
- Whole blood used for preparing the platelet-rich plasma of the present invention may be obtained from humans or animals excluding humans according to a method for collecting blood.
- an anticoagulant in advance after blood collection.
- Any anticoagulant that is commonly used and does not show toxicity to the living body may be used.
- sodium citrate, ACD, EDTA, heparin, low-molecular-weight heparin, fusan, Any commonly used materials such as hirudin and argatroban may be used.
- the amount of processed blood for preparing the platelet-rich plasma of the present invention is not particularly limited, and varies depending on the use. An appropriate amount can be selected according to the purpose of use and the amount used.
- the method of the present invention can be applied, for example, to blood collected from one's own blood, and can also be applied to blood obtained by donating blood. Since the present invention is a method for easily obtaining platelets having such high activity, it can be used for preparing platelet preparations.
- a water-soluble polymer compound may be added to the blood and allowed to stand.
- the water-soluble polymer compound in the present invention may be any one as long as 0.01 w / v% is soluble in distilled water or physiological saline at room temperature of 25 ° C. It is preferable that the molecular weight of the water-soluble polymer compound is large, but there is a problem that the solution becomes high in viscosity and is difficult to be mixed. Specifically, the average molecular weight is 100,000 to 500,000, preferably 3,000,000. The number is selected from the range of from 1,000 to 100,000, more preferably from 10,000 to 300,000, and still more preferably from about 20,000 to 150,000.
- the molecular weight in the present invention is measured by the GPC method using dextran having a fixed molecular weight as a standard substance and using distilled water as a solvent.
- the water-soluble polymer compound in the present invention may be a synthetic product or a natural product, or may be a product obtained by chemically modifying a natural product.
- the water-soluble polymer compound in the present invention may be a synthetic product or a natural product, or may be a product obtained by chemically modifying a natural product.
- the water-soluble polymer compound of the present invention includes: 1) a polyamino acid containing an amino acid and / or a pharmaceutically acceptable salt of the amino acid; 2) an acidic polysaccharide and Z or a pharmaceutically acceptable salt thereof; 3) It is selected from the compounds shown in the vinyl polymer. In order to achieve the object of the present invention, one or more of the above compounds can be used in combination.
- the pharmacologically acceptable salt in the present invention includes, for example, an alkali metal salt such as a sodium salt and a potassium salt, an alkaline earth metal salt such as a magnesium salt and a calcium salt, and an inorganic base such as an ammonium salt.
- an alkali metal salt such as a sodium salt and a potassium salt
- an alkaline earth metal salt such as a magnesium salt and a calcium salt
- an inorganic base such as an ammonium salt.
- the salt formed by the above or an organic base such as a diethanolamine salt, a cyclohexylamine salt, an amino acid salt and the like can be selected and used.
- polyamino acid or a pharmacologically acceptable salt thereof used in the present invention examples include ⁇ -amino acids, —amino acids, ⁇ -amino acids such as aspartic acid, glutamic acid, asparagine, histidine, etc. by peptide conjugation.
- examples thereof include a linked homopolymer or copolymer, and the D-form, L-form, and DL-form are not particularly limited.
- Specific examples include polyaspartic acid, polyglutamic acid, polyasparagine, polyhistidine, and pharmacologically acceptable salts thereof.
- 20 kinds of molecules are contained in the main chain or side chain of the molecule.
- amino acids that compose the protein L-orditin
- Amino acids and amino acid derivatives such as 1-L-phenylalanine dimer (aspartame) and aminosulfonic acids such as L-cysteinic acid may be included.
- These polyamino acids may have a linear structure or may have a branched structure.
- the average molecular weight of the polyamino acid that can be used in the present invention is preferably in the range of 100,000 to 500,000, and more preferably 100,000 to 100,000.
- the molecular weight of the polyamino acid can be controlled by adjusting the polymerization conditions (temperature, time, solvent, catalyst, etc.). Polymers are recondensed after polymerization using dicyclocarboimide (DCC). It can also be adjusted.
- DCC dicyclocarboimide
- anhydrous polyacidic amino acids for example, polyaspartic acid anhydride, polyglutamic acid anhydride and the like.
- polysuccinic acid imid which is an anhydride of polyaspartic acid, is preferably used from the viewpoint of industrial availability.
- acidic polyamino acids can be particularly preferably used.
- the acidic polyamino acid herein refers to a polyamino acid that is negatively charged under physiological pH conditions. The state of electrification can be grasped by techniques such as isoelectric focusing and plucking.
- the acidic polyamino acid can be a polyamino acid having a carboxyl group greater than an amino group in the ratio of the number of carboxyl groups to the number of amino groups in the molecule.
- the polyamino acid of the present invention preferably contains at least 20% of gnoretamic acid and / or aspartic acid in its constituent amino acids. More preferably, those containing 30% or more, more preferably 50% or more are used. In particular, polyaspartic acid or polyglutamic acid is particularly preferably used because it has a simple structure and is easily synthesized.
- Glutamic acid and / or aspartic acid may be randomly distributed in the molecule or distributed in blocks. Also, a graft copolymer can be used.
- the polyglutamic acid of the present invention may be poly-L-glutamic acid, poly-D-glutamic acid or a mixture thereof. Also, an L-form D-form copolymer can be used. Similarly, the polyaspartic acid in the present invention may be poly-L-aspartic acid, poly-D-aspartic acid or a mixture thereof. Also L body! )) Copolymers can also be used.
- the amide bond in the main chain may be an ⁇ bond or a 3 bond. That is, in the case of polyaspartic acid and its copolymer, ⁇ -bond is formed when amino group of aspartic acid or copolymer unit and carboxyl group at ⁇ -position of aspartic acid are bonded.
- the bond with the carboxy group at the 3-position is the / 3 bond.
- the bonding mode is not particularly limited, and the ⁇ bond and the bond may be used alone or in combination.
- the main chain basic skeleton may be such that the amide bond in the main chain is an ⁇ bond, a ⁇ bond, or a mixture of both.
- the binding mode is not particularly limited.
- polyaspartic acid or a salt thereof is obtained by hydrolyzing polysuccinic acid imide, produced by a fermentation method or an enzymatic method, or obtained by using aspartic acid 1-4-ester. Cal It can be produced by a method such as polymerizing boxy ⁇ -amino acid anhydride (NCA) and removing the ester group.
- NCA boxy ⁇ -amino acid anhydride
- part or all of the main chain of an imid polysuccinic acid is an imid ring, and the imid ring is reacted with an alcohol or a nucleophile to open the polyspartic acid. Can obtain its salt.
- Poly-glutamic acid can be obtained, for example, by polymerizing glutamic acid ⁇ -benzyl ester with a V-carboxylic acid anhydride and debenzylating with hydrogen bromide.
- polyamino acid in the present invention may be biosynthesized by a microorganism.
- poly ⁇ -glutamic acid can be produced by a fermentation method using a microorganism represented by Bacillus natto.
- the acidic polysaccharide in the present invention refers to one that is negatively charged under physiological ⁇ ⁇ conditions.
- the state of charge can be easily grasped by techniques such as electrophoresis and plucking.
- Specific examples include glycosaminodalican, galatotunic acid and alginic acid.
- Glycosaminoglycans are a group of acidic polysaccharides that contain amino sugars that are widely found in connective tissues, either free or bound to proteins, also called mucopolysaccharides. Structurally, amino sugars and peronic acid (or ratatose) ), which have a repeating long-chain structure and are either sulfated or non-sulfated.
- glycosaminoglycans include hyaluronic acid, chondroitin, chondroitin sulfate, dermatan sulfate, heparin, heparan sulfate and ketalan sulfate.
- hyaluronic acid is particularly preferably used because it satisfies this condition.
- dextran sulfate such as dextran sulfate and carboxylated dextran
- senoleose derivatives such as carboxymethylcellulose
- chitosan derivatives such as carboxymethyl chitosan and guapocarboxylic acid are preferably used.
- water-soluble vinyl polymer of the present invention examples include poly (vinylpyrrolidone), polyacrylic acid, polyacrylic acid salts such as sodium polyacrylate and polyacrylic acid ammonium, polymethacrylic acid and its salts, polystyrenesulfonic acid and its salts, and polyvinyl.
- Sulfonic acid, polyvinyl acetic acid, polyvinyl alcohol, polyacrylamide, polyvinylamine, polyarylamine, polyallyl alcohol, polyvinyl alcohol, polyethylenimine-based polymer salts, polyamidine, polyisoprenesulfonic acid, and derivatives thereof are also used. be able to. Further examples can be given, but there is no particular limitation.
- the acidic butyl polymer here refers to a vinyl polymer that is negatively charged under physiological pH conditions.
- an acid group such as a carboxyl group, a sulfonic acid group, or a phosphate group is contained in the molecule.
- Vinyl polymers including, for example, polyacrylic acid, polyacrylic acid, sodium polyacrylate, ammonium polyacrylate, polymethacrylic acid and its salts, polystyrenesulfonic acid and its salts, polyvinylsulfonic acid, and polyisoprenesulfonic acid are preferred. (Method of preparing platelet-rich plasma)
- the above water-soluble polymer compound is used in an amount of 0.0015 to 150 mg, preferably 0.15 to 45 mg, more preferably 0.15 to 1.5 mL of blood containing an anticoagulant. 1.5 to 4.5 mg can be added. When converted, it will be about 0.0001-10 w / v%, preferably 0.01-3 w / v%, and more preferably 0.1-0.3 w / v%. When a larger amount of platelet-rich plasma is prepared, the blood volume is increased, and the water-soluble polymer compound can be added at the same ratio as described above.
- the water-soluble polymer compound can be added to a container for storing collected blood, or can be directly added to a blood collection syringe.
- a water-soluble polymer compound selected from the above range to blood containing an anticoagulant, gently mix the compound so that it spreads throughout the blood, and let it stand still to promote selection. Erythrocyte sedimentation is observed, and platelet-rich plasma containing not only platelets but also blood components such as plasma components and leukocytes can be obtained in the supernatant. Erythrocyte sedimentation is observed at the latest in 3 hours, preferably within 2 hours, as early as about 10 minutes after the start of the treatment, and in about 20 to 30 minutes, the platelet-rich plasma of the present invention Obtainable.
- centrifugation that is weak enough not to cause agglutination of erythrocytes can be performed. Specifically, centrifugation at 142 G for 5 minutes or less can be added.
- the platelet-rich plasma prepared by the method of the present invention may be used as a wound healing agent, an additive for bone formation around a dental implant, or transfer of bone or artificial bone to a bone defect.
- Additives at the time of transplantation, wound healing promoter, skin disease therapeutic agent, skin ulcer therapeutic agent, tissue healing promoter after treatment or treatment for the purpose of formation or beauty, tissue repair agent after surgery, orthopedic surgery It can be applied as a healing promoter in all tissues and organs, such as post-operative tissue repair agents and nerve tissue repair agents.
- the above-mentioned diseases, damage to skin or tissues, and the like can be treated with the platelet-rich plasma of the present invention.
- the platelet-rich plasma of the present invention can be applied not only to humans but also to mammals excluding humans.
- mammals include, in particular, animals that live on the ground, and can be applied to dogs, cats, hamsters, and the like that are generally kept as pets.
- the present invention can be applied to animals used in sports, such as racehorses and bullfighters.
- Platelet-rich plasma prepared from autologous blood by the method of the present invention can be used for the above therapeutic or treatment purposes.
- the blood type is suitable, it is of course possible to use even if the blood type is not derived from own blood.As a method of using c , specifically, a required amount of the platelet-rich plasma of the present invention is applied to a wound site, and injected. And other administration methods can be applied.
- the most characteristic feature of the platelet-rich plasma of the present invention is that a platelet-rich plasma that is effective for treatment and the like can be easily and easily prepared from its own blood.
- the simple and easy preparation is achieved by providing the water-soluble polymer compound used in the preparation method of the present invention as a reagent.
- various water-soluble polymer compounds described in the column of “Water-soluble polymer compound” described above are filled in a suitable container such as a vial and ampoule, a reagent containing a plurality of these reagents, or a dissolving solution.
- reagent kits including the above.
- an apparatus used in the preparation method of the present invention Specific examples include syringes and blood collection tubes used for blood collection, and containers or test tubes made of sterilized plastic or the like for adding a water-soluble polymer compound to the collected blood fluid.
- the kit for preparing platelet-rich plasma of the present invention includes kits of reagents and instruments selected from the reagents and instruments exemplified above. By using this kit, the platelet-rich plasma of the present invention can be easily prepared using a collected bedside or the like.
- a water-soluble polymer of the present invention which is previously filled in a syringe or a container used for blood collection. It is also particularly preferable to dissolve the present water-soluble polymer in sodium citrate or ACD, which is widely used as an anticoagulant, and fill the syringe with the above-mentioned syringe.
- Sample 1 Add 2 mg of sodium polyglutamate to 1.5 mL of blood.
- Sample 2 Add 1.35 mL of blood to 0.15 mL of sodium citrate solution, and add 2 mg of sodium poly-L-glutamate to a total volume of 1.5 mL.
- Sample 3 Add 1.35 mL of blood to 0.15 mL of sodium citrate solution to make a total of 1.5 mL.
- Sample 4 Phosphate buffer (PBS) 1. Add 5 mg of sodium poly-L-glutamate to 5 mL.
- the following table shows the sedimentation status of red blood cells after each sample was allowed to stand for 30 minutes.
- Sample 1 blood coagulated during the observation, and sedimentation of red blood cells was not observed.
- Sample 2 was found to have enhanced sedimentation of erythrocytes by mixing sodium poly-L-glutamate, and the supernatant was observed.
- FIG. 1 shows peripheral blood
- FIG. 2 schematically shows a differential interference micrograph at 1000 ⁇ magnification showing the supernatant of Sample 3. From the microscopic observation, erythrocytes, leukocytes and platelets could be relatively easily classified based on size, color and morphology.
- FIG. 3 is a schematic diagram of an image of the supernatant obtained from Sample 2. Compared to Fig. 1, fewer red blood cells and more platelets and white blood cells were observed.
- FIG. 4 is a schematic diagram of an image of the supernatant of Sample 1 in which blood coagulation was observed, but no platelets were observed.
- FIG. 5 is a schematic diagram of an image of Sample 4, but nothing was observed.
- the purpose of the present example is to examine the effect of adding sodium-poly-L-glutamate (molecular weight 21, 270) (manufactured by SIGMA CHEMICAL. CO.) When the molecular weight is the same but the amount added is changed.
- a whole blood sample was prepared by adding 1.35 mL of blood to 0.15 mL of an aqueous solution containing 3.13 w / v% of sodium taenoate as an anticoagulant to make the whole 1.5 mL.
- Poly-L-glutamate sodium (manufactured by SIGMA CHEMICAL. CO.) Of each weight was added to each whole blood sample.
- Sample 1 lmg sodium poly-L-glutamate
- Example 3 After each sample was allowed to stand for 30 minutes, the platelet count in the supernatant was measured in the same manner as in Example 1. 37. from a whole blood sample the number of platelets (peripheral blood) whereas 19. 7 (10 4 / ⁇ 1 ) der Tsutano, platelet count in the supernatant of each sample 34. 5 (10 / ⁇ 1) 0 ⁇ 10 4 / ⁇ 1), which is about a two-fold increase.
- Example 3 Example 3
- the purpose of this example is to examine the effect of adding sodium poly-L-glutamate having a different molecular weight to blood.
- a whole blood sample was prepared by adding 1.35 mL of blood to 0.15 raL of an aqueous solution mixed with 3.8% w / v% of sodium taenoate as an anticoagulant to make a total of 1.5 mL.
- 3 mg of sodium poly-L-glutamate having a different molecular weight (manufactured by SIGMA CHEMICAL. CO.) was added, and five kinds of samples were prepared. The sedimentation of red blood cells when each of the above samples was allowed to stand for 30 minutes was compared. Five
- Sample 1 No addition of sodium poly-L-glutamate (control)
- Sample 2 Sodium poly-L-glutamate (molecular weight 5,800)
- Sample 3 Sodium poly-L-glutamate (molecular weight 17,500)
- Sample 4 Poly -Sodium L-glutamate (Mw 21,270)
- Sample 5 Poly-Sodium L-glutamate (Mw 42,000)
- a whole blood sample was prepared by adding 1.35 mL of blood obtained by collecting blood to 0.15 mL of an aqueous solution mixed with 3.8% w / v% of sodium citrate as an anticoagulant to make a total of 1.5 mL.
- Five types of whole blood samples were prepared for each of blood obtained from subject A and subject B, and the following polyamino acids were added to each whole blood sample by weight.
- the purpose of this example is to examine the effect of adding sodium hyaluronate, which is a kind of acidic polysaccharide, to blood.
- Sample 1 without sodium hyaluronate (control)
- Sample 2 lmg sodium hyaluronate
- the purpose of this example is to examine the effect of adding sodium poly-L-glutamate and polyacrylic acid to blood.
- the number of platelets in each supernatant was measured in the same manner as in Example 1 and shown in Table 5. In all samples 2 to 4, the platelet count was higher than in sample 1, but was higher in samples 2 and 3 in particular.
- the purpose of this example is to examine the effects of adding various water-soluble polymer compounds to blood.
- the platelet count in the supernatant after each sample was allowed to stand for 30 minutes was measured in the same manner as in Example 1 and shown in Table 6.
- the purpose of this example is to examine the effects of adding various water-soluble polymer compounds to blood.
- Sample 4 Sodium hyaluronate (Wako Pure Chemical Industries, Ltd.) 3mg Sample 5: Dextran sulfate (MDS Co. ⁇ )
- Sample 6 sodium polygalactate (manufactured by SIGMA CHEMICAL. CO.) 3mg 1 sample 7: polysodium ⁇ -DL-glutamate (linear)
- the purpose of this experimental example is to examine the function of platelets in platelet-rich plasma obtained by the method of the present invention. Samples containing such platelets (of the supernatant) have high permeability, since highly functional platelets aggregate and sediment with the fibrin clot. Using this principle, platelet function is measured.
- a sample for measurement was prepared by adding 390 L of platelet-rich plasma obtained by the method of the present invention to 10 ⁇ L (12.21 g / L) of calcium chloride and 40 ⁇ L (0.2 mmol) of ADP.
- the transmittance of the supernatant collected by the method of the present invention at a wavelength of 690 nm was measured with a spectrophotometer (MCM HEMA TRACER 212 (MCMEDICAL)).
- MCM HEMA TRACER 212 MCMEDICAL
- the platelet-rich plasma obtained by the method of the present invention refers to a supernatant obtained by adding poly-L-sodium glutamate (3 mg) to the above-mentioned starting material and leaving it to stand for 30 minutes.
- the supernatant collected by the method of the present invention contains a large amount of leukocytes, platelets, etc., and is considerably suspended. Therefore, the supernatant is centrifuged at 142 G (I200 rpm) for 10 minutes, and the upper layer in which blood cell components are sedimented is removed. The standard transmittance (100%) was set.
- the permeability of the supernatant obtained after adding calcium chloride and ADP for 30 minutes has reached 100%, and the platelets obtained by the method of the present invention have a high aggregation function. 795
- the purpose of this experimental example is to measure the amount of fibrinogen in the supernatant (in platelet-rich plasma) obtained by the method of the present invention and the conventional method.
- the presence of fibrinogen, the precursor of fibrin, which serves as a scaffold during cell migration is very important.
- the amount of fibrinogen in platelet-rich plasma prepared by the method of the present invention and the conventional method was measured.
- the starting material is prepared by adding 1.35 mL of whole blood to 0.15 mL mixed with 3.8% w / v% of sodium taenoate as an anticoagulant to make a total of 1.5 mL.
- the platelet-rich plasma obtained by the method of the present invention refers to a supernatant obtained by adding poly-L-glutamate sodium salt (3 mg) to the above starting material, and allowing it to stand for 30 minutes.
- the platelet-rich plasma prepared by the conventional method (hereinafter referred to as the conventional method PRP) and the platelet-rich plasma prepared by the method of the present invention (hereinafter referred to as the present method PRP) were measured for each blood cell count and platelet recovery rate.
- the purpose is to do.
- the conventional method PRP uses a PRP kit (manufactured by Krasan Co., Ltd.), starting with 0.85 mL of an aqueous solution containing ACD 3.8 w / v% as an anticoagulant and adding 8.5 mL of blood to make the whole 8.5 mL. Prepared.
- the centrifuge used was Heraeus Labofuge300. The first centrifugation was performed at 3600 rpm for 15 minutes, and the second centrifugation was performed at 2400 rpm for 10 minutes. The supernatant was collected to collect about 0.7 ml of platelet-rich plasma.
- PRP The method of the present invention, PRP, is prepared by adding 1.35 mL of blood to 0.15 mL of an aqueous solution containing ACD 3.8 w / v% as an anticoagulant to make 1.5 mL as a whole, and using poly-L- as a starting material. 3 mg of sodium glutamate (molecular weight: 53, 785) was added, the mixture was allowed to stand for 30 minutes, and the supernatant was collected to collect about 0.75 ml of platelet-rich plasma.
- Table 8 shows the measurement results.
- the platelet recovery rate was determined according to the following equation. As a result, it was confirmed that the platelet-rich plasma obtained by the method of the present invention could efficiently obtain platelet-rich plasma with less blood than that obtained by the conventional method.
- Recovery rate calculation method
- the purpose of this experimental example is to apply the method PRP of the present invention to nude mice (the group of the present invention) and to compare the healing effect with the group to which nothing is administered (the control group).
- the method PRP of the present invention was prepared according to the method of Experimental Example 3.
- the wound of the present invention group was smaller in the length and width of the wound than the control group, and the healing promoting effect was clearly recognized (FIG. 10-12).
- the purpose of this experimental example is to apply the method PRP of the present invention to nude mice, and to compare the healing effect with that of a conventional PRP administration example.
- Each platelet-rich plasma was prepared according to the method of Experimental Example 3.
- mice BALB / c-nu / nu A total of two immunodeficient mice BALB / c-nu / nu (11 weeks) were used.
- the method PRP of the present invention not only the amount of platelets but also the amount of leukocytes is increased, which is expected to further enhance the healing promoting effect. Therefore, leukocytes were also added to the conventional method PRP, and it was confirmed how the added leukocytes affect healing.
- mice BALB-nu / nu 11 weeks were used.
- PRP platelet-rich plasma prepared by the conventional method
- PRP platelet-rich plasma obtained by the method of the present invention
- the PRP of the present invention is obtained by adding 1.5 mL of an aqueous solution containing ACD 3.8 w / v% to which 15 mL of blood has been added as a starting material, and using sodium poly-L-glutamate (molecular weight 53,785) as the starting material. ) was added and 30 minutes after standing, the supernatant was collected to prepare about 7 mL of platelet-rich plasma.
- a platelet-rich plasma having high activity can be easily provided by the method for preparing platelet-rich plasma of the present invention.
- platelet-rich plasma obtained by the method of the present invention using its own blood component as a raw material is used to promote tissue and Z or organ repair promoters, specifically, bone formation additives around dental implants, and to bone defect sites.
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Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002493795A CA2493795A1 (en) | 2002-08-02 | 2003-08-01 | Method of preparing platelet rich plasma |
| EP03766691A EP1547606A4 (en) | 2002-08-02 | 2003-08-01 | PROCESS FOR PREPARING PLASMA RICH IN PLATELETS |
| JP2004525813A JPWO2004012750A1 (ja) | 2002-08-02 | 2003-08-01 | 血小板多血漿の調製方法 |
| AU2003252316A AU2003252316A1 (en) | 2002-08-02 | 2003-08-01 | Method of preparing platelet rich plasma |
| US10/523,572 US20050170327A1 (en) | 2002-08-02 | 2003-08-01 | Method for preparing platelet-rich plasma |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002-226277 | 2002-08-02 | ||
| JP2002226277 | 2002-08-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004012750A1 true WO2004012750A1 (ja) | 2004-02-12 |
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| PCT/JP2003/009795 Ceased WO2004012750A1 (ja) | 2002-08-02 | 2003-08-01 | 血小板多血漿の調製方法 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20050170327A1 (ja) |
| EP (1) | EP1547606A4 (ja) |
| JP (1) | JPWO2004012750A1 (ja) |
| KR (1) | KR20060059849A (ja) |
| AU (1) | AU2003252316A1 (ja) |
| CA (1) | CA2493795A1 (ja) |
| WO (1) | WO2004012750A1 (ja) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005072753A1 (ja) * | 2004-01-30 | 2005-08-11 | Toray Industries, Inc. | 多血小板血漿からなる組成物 |
| JP2009235004A (ja) * | 2008-03-27 | 2009-10-15 | J Hewitt Kk | 細胞組織増加促進方法及び肌問題改善方法並びにこれらに用いるキット |
| WO2010098079A1 (ja) | 2009-02-24 | 2010-09-02 | 学校法人金沢医科大学 | 有核赤血球の脱核方法及び脱核誘導剤 |
| JP2013522186A (ja) * | 2010-03-11 | 2013-06-13 | アントワーヌ テュージィ | 創傷治癒剤組成物を調製するための方法、管および器具 |
| JP2017536892A (ja) * | 2014-11-26 | 2017-12-14 | アントワーヌ テュージィ | 単独でまたはヒアルロン酸と組み合わせて、多血小板血漿(prp)または骨髄遠心分離液(centrate)(bmc)を調製するための新しい規格化および医療デバイス |
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| WO2008022651A1 (en) * | 2006-08-21 | 2008-02-28 | Antoine Turzi | Process and device for the preparation of platelet rich plasma for extemporaneous use and combination thereof with skin and bone cells |
| US20080261247A1 (en) * | 2007-04-03 | 2008-10-23 | Parviz Lalezari | Method of detecting red cell antigen-antibody reactions |
| US20120251411A1 (en) | 2009-12-07 | 2012-10-04 | Min-Yong Jeon | Centrifuge tube |
| KR101038616B1 (ko) * | 2011-03-16 | 2011-06-03 | 박재우 | 뼈 및 연골 질환의 치료, 예방, 또는 완화용 약제학적 조성물 |
| WO2013177277A1 (en) * | 2012-05-24 | 2013-11-28 | Becton, Dickinson And Company | Microbial concentration by utilizing poly-l-glutamic acid (pga) as a centrifugation bypass |
| DE202012102065U1 (de) | 2012-06-05 | 2012-11-15 | Angelika Franken | Kosmetische Zusammensetzung geeignet zum Füllen von Volumen, Vorrichtung zur Herstellung der Zusammensetzung |
| DE102012104883A1 (de) | 2012-06-05 | 2013-12-05 | Angelika Franken | Kosmetische Zusammensetzung geeignet zum Füllen von Volumen, Vorrichtung zur Herstellung der Zusammensetzung und kosmetisches Verfahren |
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| US12053779B2 (en) * | 2019-10-30 | 2024-08-06 | Zoetis Services Llc | System and method for separation of blood components |
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| CN113218723A (zh) * | 2021-03-16 | 2021-08-06 | 吴敏 | 一种用于显微镜观察的组合物及其制备方法和应用 |
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- 2003-08-01 WO PCT/JP2003/009795 patent/WO2004012750A1/ja not_active Ceased
- 2003-08-01 US US10/523,572 patent/US20050170327A1/en not_active Abandoned
- 2003-08-01 JP JP2004525813A patent/JPWO2004012750A1/ja not_active Withdrawn
- 2003-08-01 KR KR1020057001113A patent/KR20060059849A/ko not_active Withdrawn
- 2003-08-01 AU AU2003252316A patent/AU2003252316A1/en not_active Abandoned
- 2003-08-01 CA CA002493795A patent/CA2493795A1/en not_active Abandoned
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005072753A1 (ja) * | 2004-01-30 | 2005-08-11 | Toray Industries, Inc. | 多血小板血漿からなる組成物 |
| JP2009235004A (ja) * | 2008-03-27 | 2009-10-15 | J Hewitt Kk | 細胞組織増加促進方法及び肌問題改善方法並びにこれらに用いるキット |
| WO2010098079A1 (ja) | 2009-02-24 | 2010-09-02 | 学校法人金沢医科大学 | 有核赤血球の脱核方法及び脱核誘導剤 |
| JP2013522186A (ja) * | 2010-03-11 | 2013-06-13 | アントワーヌ テュージィ | 創傷治癒剤組成物を調製するための方法、管および器具 |
| JP2017061538A (ja) * | 2010-03-11 | 2017-03-30 | アントワーヌ テュージィ | 創傷治癒剤組成物を調製するための管および器具 |
| JP2017536892A (ja) * | 2014-11-26 | 2017-12-14 | アントワーヌ テュージィ | 単独でまたはヒアルロン酸と組み合わせて、多血小板血漿(prp)または骨髄遠心分離液(centrate)(bmc)を調製するための新しい規格化および医療デバイス |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2493795A1 (en) | 2004-02-12 |
| JPWO2004012750A1 (ja) | 2006-11-30 |
| EP1547606A1 (en) | 2005-06-29 |
| US20050170327A1 (en) | 2005-08-04 |
| KR20060059849A (ko) | 2006-06-02 |
| AU2003252316A1 (en) | 2004-02-23 |
| EP1547606A4 (en) | 2006-07-12 |
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