WO2004081055A1 - 架橋性多糖誘導体、その製造方法、架橋性多糖組成物および医療用処置材 - Google Patents
架橋性多糖誘導体、その製造方法、架橋性多糖組成物および医療用処置材 Download PDFInfo
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- WO2004081055A1 WO2004081055A1 PCT/JP2004/001958 JP2004001958W WO2004081055A1 WO 2004081055 A1 WO2004081055 A1 WO 2004081055A1 JP 2004001958 W JP2004001958 W JP 2004001958W WO 2004081055 A1 WO2004081055 A1 WO 2004081055A1
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- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 description 1
- 230000004962 physiological condition Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000003058 plasma substitute Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 239000003880 polar aprotic solvent Substances 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 235000018102 proteins Nutrition 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 150000003214 pyranose derivatives Chemical group 0.000 description 1
- MUPFEKGTMRGPLJ-ZQSKZDJDSA-N raffinose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO[C@@H]2[C@@H]([C@@H](O)[C@@H](O)[C@@H](CO)O2)O)O1 MUPFEKGTMRGPLJ-ZQSKZDJDSA-N 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
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- 239000012744 reinforcing agent Substances 0.000 description 1
- 238000001226 reprecipitation Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 description 1
- 239000004017 serum-free culture medium Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 description 1
- 235000010413 sodium alginate Nutrition 0.000 description 1
- 239000000661 sodium alginate Substances 0.000 description 1
- 229940005550 sodium alginate Drugs 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- XHFLOLLMZOTPSM-UHFFFAOYSA-M sodium;hydrogen carbonate;hydrate Chemical compound [OH-].[Na+].OC(O)=O XHFLOLLMZOTPSM-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- UQZIYBXSHAGNOE-XNSRJBNMSA-N stachyose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO[C@@H]2[C@@H]([C@@H](O)[C@@H](O)[C@@H](CO[C@@H]3[C@@H]([C@@H](O)[C@@H](O)[C@@H](CO)O3)O)O2)O)O1 UQZIYBXSHAGNOE-XNSRJBNMSA-N 0.000 description 1
- 239000012086 standard solution Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- HIFJUMGIHIZEPX-UHFFFAOYSA-N sulfuric acid;sulfur trioxide Chemical compound O=S(=O)=O.OS(O)(=O)=O HIFJUMGIHIZEPX-UHFFFAOYSA-N 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 229940124597 therapeutic agent Drugs 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 210000000115 thoracic cavity Anatomy 0.000 description 1
- 230000017423 tissue regeneration Effects 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 235000010487 tragacanth Nutrition 0.000 description 1
- 239000000196 tragacanth Substances 0.000 description 1
- 229940116362 tragacanth Drugs 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
- YFHICDDUDORKJB-UHFFFAOYSA-N trimethylene carbonate Chemical compound O=C1OCCCO1 YFHICDDUDORKJB-UHFFFAOYSA-N 0.000 description 1
- 150000004043 trisaccharides Chemical class 0.000 description 1
- QZQIWEZRSIPYCU-UHFFFAOYSA-N trithiole Chemical group S1SC=CS1 QZQIWEZRSIPYCU-UHFFFAOYSA-N 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 230000009385 viral infection Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 229920001285 xanthan gum Polymers 0.000 description 1
- 239000000230 xanthan gum Substances 0.000 description 1
- 235000010493 xanthan gum Nutrition 0.000 description 1
- 229940082509 xanthan gum Drugs 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
- C08B37/0009—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid alpha-D-Glucans, e.g. polydextrose, alternan, glycogen; (alpha-1,4)(alpha-1,6)-D-Glucans; (alpha-1,3)(alpha-1,4)-D-Glucans, e.g. isolichenan or nigeran; (alpha-1,4)-D-Glucans; (alpha-1,3)-D-Glucans, e.g. pseudonigeran; Derivatives thereof
- C08B37/0021—Dextran, i.e. (alpha-1,4)-D-glucan; Derivatives thereof, e.g. Sephadex, i.e. crosslinked dextran
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L24/00—Surgical adhesives or cements; Adhesives for colostomy devices
- A61L24/04—Surgical adhesives or cements; Adhesives for colostomy devices containing macromolecular materials
- A61L24/08—Polysaccharides
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/04—Macromolecular materials
- A61L31/042—Polysaccharides
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P7/00—Drugs for disorders of the blood or the extracellular fluid
- A61P7/04—Antihaemorrhagics; Procoagulants; Haemostatic agents; Antifibrinolytic agents
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
- C08B37/0024—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid beta-D-Glucans; (beta-1,3)-D-Glucans, e.g. paramylon, coriolan, sclerotan, pachyman, callose, scleroglucan, schizophyllan, laminaran, lentinan or curdlan; (beta-1,6)-D-Glucans, e.g. pustulan; (beta-1,4)-D-Glucans; (beta-1,3)(beta-1,4)-D-Glucans, e.g. lichenan; Derivatives thereof
- C08B37/0027—2-Acetamido-2-deoxy-beta-glucans; Derivatives thereof
- C08B37/003—Chitin, i.e. 2-acetamido-2-deoxy-(beta-1,4)-D-glucan or N-acetyl-beta-1,4-D-glucosamine; Chitosan, i.e. deacetylated product of chitin or (beta-1,4)-D-glucosamine; Derivatives thereof
Definitions
- the present invention relates to a crosslinkable polysaccharide derivative for use under specific crosslinking conditions, a method for producing the same, a composition containing the polysaccharide derivative, and a medical treatment material using the same. Specifically, by introducing an active ester group, a cross-linkable polysaccharide derivative having a self-crosslinking property by bonding to a molecular hydroxyl group and an adhesive property to a living body surface by bonding to an active hydrogen-containing group on a living body surface under alkaline conditions About use. Also, by not using biologically derived materials and potentially toxic chemicals as derivative skeletons, it is possible to obtain polysaccharide derivatives that are inherently biologically and chemically safe, especially as materials with excellent biocompatibility.
- a suitable method for producing a polysaccharide derivative, a cross-linkable polysaccharide composition containing such a polysaccharide derivative, a medical treatment material more specifically, easy to prepare at the time of use, Particularly, it relates to a medical treatment material such as a hemostatic material and a medical adhesive, which forms a bridge having sufficient adhesion, excellent followability to a strong adherend, and excellent flexibility.
- a medical treatment material such as a hemostatic material and a medical adhesive
- medical treatment materials play an important role and contribute to shortening the operation time.
- the medical treatment material there is a living paper woven adhesive.
- the bio-tissue adhesive is used to prevent the leakage of bodily fluids such as blood and lymph from the sutured or joined tissue or the leakage of gas from the body, and to adhere and close the tissues of blood vessels and tissues. Is used for installation.
- Fibrin glue is one of the most frequently used biological paper woven adhesives with a great deal of clinical experience.
- Fipurin glue is a two-part hemostatic material that uses the coagulation reaction of blood. First, fibrinogen is converted to fibrin by the enzymatic action of thrombin. Next, thrombin-activated factor crosslinks fibrin to form a fibrin clot.
- the structure of fibrin glue ⁇
- the sources of fibrinogen and factor VI thrombin are biological materials (of biomaterials, materials obtained from living organisms such as humans and animals).
- safety measures such as raw material management and virus inactivation / removal treatment are taken in the manufacturing process, the risk of virus infection cannot be completely ruled out.
- drawbacks such as high cost, low adhesive strength, and troublesome handling, and research on alternatives is being actively conducted.
- GRF adhesive gelatin glue
- the above-mentioned paper “Adhesion of living tissue” also describes a technology using gelatin glue (GRF adhesive) as another living tissue adhesive with clinical experience.
- GRF adhesive crosslinks a mixture of gelatin and resorcinol with formaldehyde and glutaraldehyde. It is characterized by strong tissue adhesion, and is used for filling and adhesion of dissecting aortic aneurysms in addition to disposable fibrin glue.
- formaldehyde itself is toxic and induces tissue repair damage around the application area.
- urethane-based adhesives The isocyanate group reacts with water to generate carbon dioxide gas and converts it to an amino group.Then, a part of the generated amino group reacts with an isocyanate group, and the amino group and the isocyanate group of a biological tissue protein react.
- the adhesive is said to form a urethane bond and adhere to living tissue, and the adhesive has the property of being flexible and capable of following the movement of a living body.
- this cured product is difficult to be absorbed into living organisms, and there is a concern that infectious diseases and the like due to long-term residuals may occur, and there is a problem of absorption into living organisms.
- This adhesive has an acrylyl ester end group bonded to a copolymer of polyethylene glycol (primer) and polylactic acid (sealant) or a copolymer of polyethylene glycol (primer) and trimethylene carbonate (sealant). It contains eosin dye as a photosensitive material.
- this hydrogenole is gradually absorbed into the body and disappears about nine months after application.
- this adhesive requires a separate light irradiating device on the operating table, which places a spatial limitation on it and imposes a large economic burden on the installation and maintenance of the device.
- a resin having a primary amino group at the molecular chain end of a multi-branched polyethylene glycol has a first component having a nucleophilic group such as a thiol group, and an electrophilic group such as a succinimidyl group.
- polysaccharides are known as biocompatible high-grade materials, and in particular, crosslinked products of polysaccharides having a carboxy group in a molecule such as hyaluronic acid are disclosed in U.S. Pat. It is proposed in International Publication No. WO 00/278886. To form these polysaccharide bridges, carbodiimide, ethoxyacetylene, Woodward's reagent, chloroacetonitrile (US Pat. No. 5,676,964), and an activator used in peptide chemistry (International In the publication, the carboxyl group in the molecule activated in U.S. Pat.
- the carboxy group of the polysaccharide is converted to a salt form such as ammonium salt, and the unactivated carboxy residue after activation is converted to a sodium salt or the like. It is highly possible that the crosslinked material contains residual ammonium, salts such as metals.
- the polysaccharide having a carboxylic acid in the molecule is converted into a salt and activated.
- Prior art International Patent Publication No. 95424429 which discloses a method for activating a polysaccharide itself, is disclosed in Japanese Patent Application Laid-Open No. HEI 9-244, as described above, in which a polysaccharide having a carboxy group in a molecule such as hyaluronic acid is converted into an aromatic or heteroaromatic compound.
- an activated polysaccharide partially or wholly esterified with an N-hydroxyamine alcohol is disclosed.
- use as an intermediate for peptide synthesis is disclosed. Use in the uncrosslinked state is not disclosed.
- tissue adhesives As mentioned above, medical treatment materials used in the body, typified by tissue adhesives, not only meet the clinical demands in terms of tissue adhesive strength, but also are non-living materials in terms of safety. It is important to avoid the risk of infectious diseases and the like by using derived materials, to reduce the toxicity of the components themselves or their decomposed products by using talents, and to design the materials to have biodegradable and absorbable properties. It is. In addition, it is desirable to reduce the number of operations to be able to respond quickly to sudden applications, and to use special equipment without using special equipment. Disclosure of the invention
- An object of the present invention is to provide a novel method for using a polysaccharide derivative as a material for realizing the medical treatment material required as described above. That is, the present invention provides a crosslinked material containing the polysaccharide derivative, a method for producing the same, and a medical treatment material that is easy to operate in anticipation of use and requires no special equipment. It is intended to be.
- the object of the present invention is achieved by the following (1) to (48).
- the active hydrogen-containing group is a hydroxyl group in a polysaccharide molecule, and the polysaccharide derivative is self-crosslinking.
- ⁇ Conductor
- the polysaccharide derivative contains the active ester group in an amount of 0.1 to 2 mmo1 / g with respect to its dry weight, and the crosslinkability according to any one of (1) to (6), Polysaccharide derivatives.
- the raw material polysaccharide into which the active ester group is introduced is a non-salt type in the precursor stage of the crosslinkable polysaccharide derivative having a carboxy group or a carboxyalkyl group.
- the crosslinkable polysaccharide derivative according to any one of (1) to (10), wherein the raw material polysaccharide into which the active ester group is introduced is a polysaccharide that does not itself have a hydroxyl group and a carboxyalkyl group.
- This raw material polysaccharide is an active esterification precursor (acid group-containing polysaccharide) as it is.
- a self-held or introduced carboxylic acid-containing polysaccharide having a carboxy group and / or a carboxyalkyl group (a precursor of a crosslinkable polysaccharide derivative), in its non-salt form, between 60 ° C and 120 ° C
- a temperature dissolved in an aprotic polar solvent, reacted with an electrophilic group-introducing agent in the presence of a dehydrating condensing agent, and at least partially activating the carboxy group or carboxyalkyl group.
- the acid group-containing polysaccharide has a carboxy group and Z
- the amount of the dehydration-condensation agent (Zmmo 1) is set to 0.1 (Z / X) with respect to the amount of carboxy group and Z or carboxyalkyl group (Xmmo 1) of the acid group-containing polysaccharide present in the reaction system.
- a crosslinkable polybran composition comprising the crosslinkable polysaccharide derivative (A) according to any one of the above (1) to (17), and a polymer (C) other than the polysaccharide derivative (A).
- the polymer (C) force S, two or more primary amino groups and Z in one molecule Or the crosslinkable polysaccharide composition according to (27), which is a polymer having a thiol group.
- the polyalkylene glycol derivative is selected from the group consisting of a polyethylene glycol (PEG) derivative, a polypropylene glycol derivative, a polybutylene glycol derivative, a polypropylene glycolone-polyethylene glycolone block copolymer derivative, and a random copolymer derivative.
- PEG polyethylene glycol
- the basic polymer skeleton of the polyethylene glycol derivative is at least one selected from the group consisting of ethylene glycol, trimethylonoleethane, diglycerol, pentaerythritol, and hexaglycerol, and has a molecular weight
- the polyethylene glycol derivative has an ethylene glycol type polyethylene dalicol derivative having a thiol group at both terminals and having a weight average molecular weight of 1,000, 2,000, 6,000 or 10,000, Ethylenk having an amino group and having a weight average molecular weight of 1,000, 2,000, 6,000 or 10,000, a recall type polyethylene glycol derivative, and a weight average molecular weight having a thiol group at three terminals of 5 2,000 or 10,000 trimethylolethane-type polyethylene glycol derivatives, triaminoloneethane-type polyethylene glycol derivatives having a weight average molecular weight of 5,000 or 10,000 having an amino group at three terminals, and four terminals Weight average molecular weight having a thiol group is 5,000, 1 000 or 20,000 diglycerol-type polyethylene glycolone derivatives, diglycerol-type polyethylene glycol derivatives having a weight average molecular weight of 5,000, 10,000 or 20,000 having four amino groups, four Penta
- Type polyethylene glycol derivative a hexylglycerol type polyethylene glycol derivative having a thiol group at eight terminals and having a weight average molecular weight of 10,000 or 20,000, and a weight average molecular weight having an amino group at eight terminals of 10 2,000 or 20,000 hexaglycerol-type polyethylene dalicol derivatives
- Crosslinkable polysaccharide composition according to at least one selected from the group (30)
- the polysaccharide is at least one selected from pectin, hyaluronic acid, chitin, chitosan, carboxymethyl chitin, canoleboxymethinolechitosan, chondroitin sulfate, keratin sulfate, keratosulfate, and heparin derivatives thereof.
- a medical treatment material comprising the crosslinkable polysaccharide derivative according to (1) to (17) or the crosslinkable polysaccharide composition according to (27) to (43).
- a kit comprising the medical treatment material according to any one of (44) to (46).
- the cross-linkable polysaccharide derivative according to (1) to (17) or the cross-linkable polysaccharide composition according to (27) to (43) is determined at a desired site by using an alga.
- a method for hemostasis and / or adhesion of a living body which comprises reacting in the presence of moisture under pressure conditions.
- the cross-linkable polysaccharide derivative according to the present invention essentially has biological and chemical safety by not using a bio-based material and a potentially toxic substance as a skeleton of the derivative. Compatible material.
- the cross-linkable polysaccharide derivative exhibits self-cross-linking properties and adhesion to the surface of a living body under alkaline conditions, and requires no special equipment, is easily prepared at the time of use, and has an adhesive property to the living body surface. It is useful as a medical treatment material such as a hemostatic material and a medical adhesive, because it forms a crosslinked product which is excellent in conformability to force adherends and flexibility.
- crosslinkable polysaccharide derivative according to the present invention a crosslinkable polysaccharide composition containing the same, a medical treatment material, and a method for producing these will be described in detail.
- the crosslinkable polysaccharide derivative of the present invention has at least one active ester group capable of reacting with an active hydrogen-containing group introduced into the polysaccharide side chain.
- the polybran (raw material) into which the active ester group is introduced will be described later.
- the polysaccharide molecule essentially has a hydroxyl group, that is, has an active hydrogen-containing group, the active ester group is introduced into the polysaccharide.
- Polysaccharide derivatives have both an active ester group and an active hydrogen-containing group in one molecular chain, and exhibit self-crosslinking properties under reaction conditions.
- This self-crosslinking reaction means that the active ester group and the active hydrogen-containing group react within one molecule or between molecules of the polysaccharide derivative to form a covalent bond.
- active hydrogen-containing groups on the surface of a living body are used for the reaction, Positive polysaccharide derivatives exhibit adhesiveness to biological surfaces.
- such a crosslinkable polysaccharide derivative may be referred to as an active esterified polysaccharide, and may be hereinafter simply referred to as a polysaccharide derivative.
- single molecular chain or “intramolecular” means a single molecule in a range connected by covalent bonds.
- the polysaccharide derivative of the present invention is an active esterified polysaccharide and essentially retains polymorphism. Therefore, in the following, poly and conductor may be described in parallel with the method of active esterification of polysaccharide (the method of producing polysaccharide derivatives).
- the active ester group to be introduced into the polysaccharide can react with an active hydrogen-containing group in the presence of water under alkaline conditions to form a covalent bond.
- Such active ester groups are usually more possessed by the carboxy or methyl carboxy groups of the carboxy or methyl carboxy groups that are either self-owned by the polysaccharide molecule or introduced by acidification compared to normal esters.
- N-hydroxyxamine-based compound for forming ⁇ -OXX include N-hydroxysuccinimide, N-hydroxynorbornene-1,2,3-dicarboxylic acid imide, 2-hydroxymino 2-cyanoacetic acid ethyl ester,
- Representative examples include 2-hydroxyamino-2-aminoacetic acid amide and N-hydroxypiperidine.
- the active ester group of the polysaccharide derivative may be used alone or in combination of two or more.
- the multiconductor of the present invention usually has two or more in one molecule. Force that varies depending on the purpose of use When expressed in terms of the amount of active ester groups per 1 g of the dry weight, it is preferably 0.1 to 2 mm o 1 g.
- the polysaccharide into which the active ester group is introduced and which constitutes the main skeleton of the polysaccharide derivative is not particularly limited as long as it has two or more monosaccharide structures in the main skeleton.
- Such polysaccharides include monosaccharides such as arabinose, ribose, xylose, glucose, mannose, galactose, funolectose, sonorebose, rhamnose, fucose, and ribodeose; melibiose, trehalose, sucrose, manoletose, cellobiose, gentiobiose, ratatose, and the like.
- Sugars those formed by covalent bonding of polysaccharides of three or more sugars such as raffinose, gentianose, meletitose, and stachyose, and those in which a functional group is further introduced.
- a polysaccharide may be a naturally occurring one or an artificially synthesized one.
- the polysaccharide derivative of the present invention can be used as a single skeleton or as a skeleton of two or more polysaccharides.
- the weight average molecular weight of the polysaccharide serving as the main skeleton of the conductor of the present invention is a polysaccharide having a weight-average molecular weight of 50,000 to 250,000, corresponding to a combination of tens to thousands of the above-mentioned monosaccharide, disaccharide, or trisaccharide or higher polysaccharide.
- a polysaccharide it is possible to adjust the hardness of the gel after the polysaccharide derivative of the present invention is crosslinked. This is because it is easy to introduce a plurality of active ester groups and ⁇ fek element-containing groups into one molecular chain.
- the raw material polysaccharide that forms the main skeleton of the polysaccharide derivative has the above-mentioned components, and has a carboxylic acid group for forming an active ester group “one COO XJ” in the active esterification precursor stage (hereinafter referred to as “acid group”).
- the carboxylic acid group is a carboxy group and / or a carboxyalkyl group (hereinafter sometimes referred to as a carboxylic acid group), and the carboxyalkyl group is A functional group in which a carboxy group is bonded to an alkyl skeleton as exemplified by a carboxymethyl group, a carboxyethyl group, a carboxypropyl group, a carboxyisopropyl group, and a propyloxybutyl group.
- the raw material polysaccharide may be an acid group-containing polysaccharide at the precursor stage of the crosslinkable polysaccharide derivative, may be a natural polysaccharide having a carboxylic acid group by itself, and may be a polysaccharide having no carboxylic acid group itself. It may be a polysaccharide into which a carboxy group and / or a carboxyalkyl group has been introduced.
- carboxylic acid group-containing polysaccharides natural polysaccharides having a carboxy group, carboxydisaccharide polysaccharides having a carboxy group introduced, carboxymethylated polysaccharides having a carboxymethyl group introduced, and carboxylethylation having a carboxyethyl group introduced thereinto Polysaccharides are preferred. More preferred are a natural polysaccharide having a carboxy group, a carboxylated polysaccharide into which a carboxy group has been introduced, and a carboxymethylated polysaccharide into which a carboxymethyl group has been introduced.
- the natural polysaccharide having the carboxylic acid group by itself is not particularly limited, and examples thereof include pectin containing galacturonic acid and hyaluronic acid.
- pectin is “GENUE pectinj” from CP Kelco (Denmark)
- hyaluronic acid is Hyaluronic acid FCH from Bunsha (Japan) can be used, and those that are generally commercially available can be used.
- Pectin is a polysaccharide whose main component is galataturonic acid. About 75-80% or more of pectin is composed of garratonic acid, and other components are mainly composed of other sugars.
- Pectin is a polysaccharide formed by combining galacturonic acid and other sugars in the above ratio.
- Hyaluronic acid is used as an ophthalmic surgery adjuvant and as a therapeutic agent for arthrosis.
- Hyaluronic acid does not contain galataturonic acid.
- the carboxy group and / or carboxyalkyl group of the polysaccharide derivative is desirably “non-salt type” in which no salt is coordinated, and the polysaccharide derivative finally obtained is not in a salt form.
- salt means an inorganic salt such as an alkali metal or an alkaline earth metal, a quaternary amine such as tetrabutylammonium (TBA), or a halogen salt such as octamethylmethylpyridylium iodide. And the like.
- Non-salt type means that these “salts” are not coordinated, and “not in salt form” means that these salts are not included.
- the polysaccharide into which the carbonyl group and the Z or carboxyalkyl group are introduced is not particularly limited, and includes dextran and pullulan.
- Dextran includes "Dextran T fractions" from Amersham Biosciences (Japan) and “Pullulan PI-20” from Hayashibara (Japan). Pullulan is used as an oral agent for medicines including oral drugs, and those having little biological contamination such as endotoxin are preferred.
- any commercially available polysaccharide can be used.
- polysaccharides that have been used in medical applications are preferably used in terms of safety. It is a polysaccharide that can be used.
- the carboxylation reaction of the polysaccharide can be carried out without particular limitation using a known oxidation reaction.
- the type of the carboxylation reaction is not particularly limited, and examples thereof include tetraacid oxidation, fuming sulfuric acid oxidation, phosphoric acid oxidation, nitric acid oxidation, and hydrogen peroxide oxidation, each of which is generally known using a reagent.
- the selected reaction can be oxidized. Each reaction condition can be appropriately set depending on the amount of carboxy group introduced.
- carboxylated polysaccharide (carboxylated polysaccharide) is prepared by suspending the raw material polysaccharide in chloroform or carbon tetrachloride and adding nitrous oxide to oxidize the hydroxyl group of the polysaccharide. can do.
- the carboxyalkyl reaction can use a known carboxyalkynolelation reaction of a polysaccharide, and is not particularly limited. It is possible to select a reaction using acetic acid. The reaction conditions can be appropriately set depending on the amount of carboxymethyl group introduced.
- any of the above-mentioned carboxylation or carboxyalkyl method can be used, and the method is not particularly limited.
- Carboxyalkylamides, particularly carboxymethylation, are preferred in that they are small and the amount of carboxy group introduced is relatively controlled.
- the introduction of the carboxylic acid group is not particularly limited to the introduction into the bran that does not itself have a carboxylic acid group.
- a natural polysaccharide having a carboxylic acid group itself for example, the above-mentioned hyaluronic acid, etc.
- a methyl group may be introduced.
- the acid group-containing polysaccharide may be used alone or in combination of two or more. You may.
- the acid group-containing polysaccharide used for active esterification usually has a carboxylic acid group (assuming the group as one molecule) per gram of dry weight of 0.1 to 5 mmo1 / g, Preferably it is 0.4 to 3 mmol / g, more preferably 0.6 to 2 mmol / g. If the ratio of the amount of the carboxylic acid group is less than 0.1 lmmol / g, the number of active ester groups derived from the group and serving as a crosslinking point may be insufficient. On the other hand, when the proportion of the carboxylic acid group is more than 5 mmol / g, the polysaccharide derivative (uncrosslinked) becomes difficult to dissolve in a solvent containing water.
- the method for the active esterification of the acid group-containing polysaccharide (the method for producing the polysaccharide derivative) is not particularly limited.
- the above-mentioned acid group-containing polysaccharide may be converted into an electrophilic group-introducing agent in the presence of a dehydrating condensing agent.
- a method using a transesterification reaction for introducing an active ester group into a polysaccharide from a compound having an active ester group is suitable for the present invention, and this method (also referred to as the method of the present invention) will be mainly described below.
- the above-mentioned acid group-containing polysaccharide is prepared into a solution of an aprotic polar solvent and subjected to a reaction. More specifically, the method comprises a step of preparing a polysaccharide having a carboxy group or a carboxyalkyl group in a polar aprotic solvent at night, and adding an electrophilic group-introducing agent and a condensing agent to the solution.
- an electrophilic group-introducing agent and a condensing agent to active esterify the carboxy or carboxyalkyl group of the polysaccharide Examples include a method of performing a reaction step, and a method of performing a purification step and a drying step of a reaction product.
- the polysaccharide is dissolved in the aprotic polar solvent by adding the polysaccharide to the solvent and heating to 60 ° C to 120 ° C.
- the acid group-containing polysaccharide to be active-esterified by this method among the polysaccharides exemplified above, those which dissolve in an aprotic polar solvent at a temperature between 60 ° C and 120 ° C. Is preferably used.
- the carboxy group or the carboxymethyl group is preferably in an acid form from the viewpoint of solubility in an aprotic polar solvent.
- “Acid form” means that the counter-thione species of the carboxyl or carboxymethyl group is a proton.
- a polysaccharide having an acid type carboxy group is called an acid type (raw material) polysaccharide.
- pectin which is a polysaccharide having a hydroxy group
- acid pectin Carboxymethyl dextran having an acid-form carboxymethyl group
- CM dextran acid-form carboxymethyl dextran
- Aprotic polar solvent is a polar solvent having no proton capable of forming a hydrogen bond with a nucleophile having an electrically positive functional group.
- the aprotic polar solvent that can be used in the production method of the present invention is not particularly limited, but dimethyl sulfoxide (DMSO), N, N-dimethylformamide, N-methyl-2-pyrrolidone, N, N-dimethylacetate
- DMSO dimethyl sulfoxide
- N N-dimethylformamide
- N-methyl-2-pyrrolidone N, N-dimethylacetate
- the amide, 1,3-dimethyl-2-imidazolidinone is exemplified. Since the solubility of the polysaccharide in the solvent is good, dimethyl sulfoxide can be suitably used.
- the acid-type polysaccharide solution is charged with an electrophilic group-introducing agent and a dehydration-condensing agent to form an active esterification of the carboxyl group or the hydroxyl group of the polysaccharide.
- the reaction temperature during the active esterification is not particularly limited, but is preferably from o ° C to
- the temperature is 70 ° C, more preferably 20 ° C to 40 ° C.
- the reaction time varies depending on the reaction temperature, but is usually 1 to 48 hours, preferably 12 to 24 hours.
- Electrophilic group-introducing agent J is a reagent that introduces an electrophilic group into a carboxy group or a carboxyalkyl group and converts them into an active ester group.
- the electrophilic group-introducing agent include: Although not particularly limited, N-hydroxyamine-based active esters can be used, and examples thereof include N-hydroxyamine-based active ester-derived compounds.
- the derived individual compound is not particularly limited, but includes, for example, N-hydroxysuccinimide, N-hydroxynorbornene-2,3-dicarboxylic acid imide, 2-hydroxymino-2-cyanoacetic acid ethyl ester, 2-hydroxymino-2-cyano Acetamide, N-hydroxypiperidine, etc.
- N-hydroxysk Nimido is, has a proven track record in the peptide synthesis field, is more suitable and easy this available commercially.
- the “dehydration condensing agent” is used to convert an carboxy group or a carboxyalkyl group into an active ester group by using an electrophilic group-introducing agent to form an active ester group. In this method, one water molecule generated by condensation is pulled out, that is, dehydrated to form an ester bond between the two.
- the dehydration condensing agent is not particularly limited, and examples thereof include 1-ethyl-3-dimethylaminopropylcarboximide hydrochloride (EDC ⁇ HC 1), 1-cyclohexyl (2-morphonyl-4-) Ethyl) monocarposimide 'meso p-toluenesulfonate and the like. Among them, 1-ethyl-13-dimethylaminopropylcarbodiimide hydrochloride (EDC'HCl) has a track record in the field of peptide synthesis, and is more preferably commercially available.
- the unreacted electrophilic group-introducing agent, dehydration condensing agent, and reaction by-product are removed from the reaction solution by ordinary means such as reprecipitation, filtration, and Z or washing.
- the polysaccharide derivative of the present invention can be obtained by removing the product.
- the polysaccharide derivative in order to remove the washing solvent from the polysaccharide derivative obtained in the purification step, the polysaccharide derivative may be dried by a commonly used method.
- the final amount of the active ester group of the polysaccharide derivative is preferably 0.1 to 2 mmO 1 / g.
- the amount of active ester groups introduced into the carboxy groups of the active esterification raw material polysaccharide can be controlled so that the derivative can be obtained.
- the mixing amount of the electrophilic group introduction agent and the condensing agent can be adjusted in the reaction step.
- the ratio (Z / X) of the ratio of the number of moles of the dehydrating condensing agent (Z mmo 1) to the number of moles of all carboxy groups of the polysaccharide (Xmm o 1) In the above-mentioned reaction, 0.1 and ZZX
- the addition condition satisfies 50.
- z / x is less than 0.1, the reaction efficiency is low due to the small amount of the flfck condensing agent added, and it becomes difficult to achieve the desired active ester group introduction rate.
- the dehydrating condensing agent When ZZX is greater than 50, the dehydrating condensing agent is used. This is because the introduction rate of the active ester group is increased due to the large amount of the polysaccharide, but the obtained polysaccharide derivative is hardly dissolved in water.
- the number of moles (Ymmo1) of the electrophilic group-introducing agent relative to the number of moles (Xmmo1) of the lipoxy group of the polysaccharide is sufficient as long as it is added in an amount equal to or more than the reaction amount according to the introduction ratio of the active ester group.
- the addition conditions satisfy 0.1 and YZX and 100, respectively.
- the polysaccharide derivative according to the present invention usually has a hydroxyl group of a glu: 5 pyranose ring in a polyfr molecule, and thus has an active hydrogen-containing group by itself.
- the active hydrogen-containing group in the force molecule is not limited to this, and may further have an active hydrogen-containing group introduced into the molecule as needed.
- the polysaccharide derivative may have one or more active groups.
- the polysaccharide derivative of the present invention can contain a wide range of known functional groups such as known elements and atomic groups as long as the active ester group and the active hydrogen-containing group do not impair the properties of the present invention. it can.
- Such a functional group include a halogen element such as fluorine, chlorine, bromine, and iodine; a nonoleboxyl group; a canoleboxymethinole group, a canoleboxyshetinole group, a carboxypropyl group, a carboxypropyl group.
- Carboxyalkyl groups such as isopropyl group; silyl groups, alkylenesilyl groups, alkoxysilyl groups, and phosphate groups; One of these functional groups may be introduced alone, or two or more thereof may be introduced.
- the content of the active ester group in the obtained polysaccharide derivative can be expressed by multiplying the ratio (AE / TC) of the molar amount ( ⁇ ) by 100.
- the active ester group introduction rate is described in, for example, Biochemistry Vol. 14, No. 7 (1975), It can be determined by the method described in P1535-1541.
- it may have a carboxy group or a carboxymethyl group of the starting polysaccharide remaining after the active ester group is introduced at an active ester group introduction rate of less than 100%.
- the “crosslinked structure” means that a covalent bond is formed within one molecular chain and between Z or a plurality of molecular chains of the polysaccharide derivative of the present invention, and as a result, the molecular chain of the polysaccharide derivative has a network-like three-dimensional structure. I do.
- the active ester group and the active hydrogen-containing group can be bonded in one molecular chain, but may be cross-linked by covalent bonding between a plurality of molecules.
- the polysaccharide derivative of the present invention which is water-soluble before the cross-linking reaction, forms a cross-linked structure with the progress of the reaction, decreases in fluidity, and becomes a water-insoluble solid mass (hydrous gel).
- the polysaccharide derivative of the present invention when the property of forming a crosslinked structure by a covalent bond within its own molecular chain or between molecular chains without using another crosslinking agent is defined as “self-crosslinking”, the polysaccharide derivative of the present invention Is a self-crosslinking polysaccharide.
- the polysaccharide derivative of the present invention is not only self-crosslinking due to the participation of the active hydrogen-containing group in the molecule as described above, but also when the polyhedron is applied to the surface of a living body, The reaction between the group and the active ester group can exhibit adhesiveness to the surface of a living body.
- Such a use form is a preferred embodiment of the polysaccharide derivative of the present invention. When applied to the surface of a living body, self-crosslinking may occur at the same time.
- the active fck element-containing group involved in the reaction with the active ester group is particularly a group capable of reacting with the active ester group to form a covalent bond under the specific reaction conditions of the present invention.
- the general examples of the active ⁇ RTIgt; 4 ⁇ / RTI> element can be used. Specifically, hydroxyl group, amino group, thiol group, etc. Is mentioned.
- the amino group includes a primary amino group and a secondary amino group. Among these, when the active IfeR element-containing group is a hydroxyl group or a primary amino group, the reactivity with the active ester group is good, and the time required for crosslinking and gelation is short, which is preferable. Good.
- the method of cross-linking the multi-conductor of the present invention is a method of forming a covalent bond by force-reaction between the active ester group and the active element-containing group.
- the polysaccharide derivative of the present invention is treated under alkaline conditions. Examples thereof include a method of crosslinking by subjecting to the presence of water such as water, steam, or a solvent containing water, a method of adding a pH adjuster to a solution of a polysaccharide derivative, and crosslinking.
- the polysaccharide derivative can be crosslinked by subjecting it to the presence of pH 7.5 to 12, preferably pH 9.0 to 10.5 in the presence of water. At that time, if the pH of water is lower than 7.5, the self-crosslinking property is low, and a sufficient degree of crosslinking cannot be obtained. On the other hand, if the pH is higher than pH12, the application of the crosslinking agent proceeds with the crosslinking reaction, but is not suitable in terms of physiological conditions.
- condition for pressure refers to conditions in which water having a pH of at least 7.5 or more is present.
- the temperature under “alkaline conditions” is not particularly limited, but is, for example, in the range of 10 ° C. to 40 ° C. Can be.
- “Contacting with water under the alkaline conditions” means that the polysaccharide derivative is infested with water in any form under the alkaline conditions, and the polysaccharide derivative is exposed to the alkaline conditions.
- the polysaccharide derivative is in the form of powder, it is possible to add water adjusted to alkaline conditions in advance, or to add water in a state where the polysaccharide derivative powder and the pH adjuster are mixed. it can.
- the form of the polysaccharide derivative is an aqueous solution, it is possible to add water previously adjusted to alkaline conditions, or to add a pH adjuster. By these operations, the polysaccharide derivative is placed in an alkaline environment, and a crosslinking reaction starts.
- the crosslinking reaction starts and proceeds. Therefore, the pH of a mixture of water and a multi-H conductor under alkaline conditions may be under alkaline conditions, but not necessarily under alkaline conditions.
- Cross-linking of polysaccharide derivatives is initiated by glowing with water under alkaline conditions, the cross-linking reaction is not substantially started by UV (ultraviolet) or heating, and the cross-linking is substantially advanced by UV or heat. do not do.
- the polysaccharide derivative as described above can be provided as a cross-linking material composed of the polysaccharide derivative alone due to its self-cross-linking property, and a cross-linkable material in the form of a composition in combination with another component is provided.
- a cross-linking material composed of the polysaccharide derivative alone due to its self-cross-linking property
- a cross-linkable material in the form of a composition in combination with another component is provided.
- the other components may form a composition in a state in which they are infested with the active H derivative depending on the type, and may be in a non-insect state until they are mixed when used.
- the polysaccharide derivative can be provided in the form of a powder or a sheet. That is, the powdery polysaccharide derivative can be obtained by crushing or pulverizing the polysaccharide derivative obtained by the above-mentioned synthesis reaction, and adjusting the particle size as necessary to adjust the range of the particle size. Wear. In order to reduce the particle diameter, there is no particular limitation, but it is sufficient to freeze-pulverize, mill-pulverize and / or classify. After crushing and pulverizing, it can be adjusted to an arbitrary particle size distribution by sieving. The average particle diameter is not particularly limited, but is preferably several tens nm to several hundred im.
- the obtained powder can be prepared as a paste or an aerosol by a commonly used method.
- the sheet-shaped polysaccharide derivative can be produced by a solution preparation step of dissolving the polysaccharide derivative in water and a drying step of developing the solution into a desired shape and drying by heating or freeze-drying.
- the sheet-form polysaccharide derivative can be obtained by preparing a ⁇ solution in which the polysaccharide derivative is dissolved, and freeze-drying the solution.
- the pH of the water for preparing the 7_R solution is preferably 3.0 to 7.5. If the pH is less than 3.0, the obtained sheet shows strong acidity, and if it is more than 7.5, the active ester group may be released.
- the calo-heat-dried sheet can be obtained by developing the aqueous solution and heating and drying at 30 to L10 ° C. If necessary, it can be dried by heating under reduced pressure.
- the freeze-dried sheet can be obtained by freezing the water and drying while freezing. If necessary, normal freeze-drying can be used.
- the present invention also provides a crosslinkable polysaccharide composition containing the polysaccharide derivative (A) and a pH-adjusted IJ (B) as a composition containing the polysaccharide derivative (A).
- a crosslinkable polysaccharide composition containing the polysaccharide derivative (A) and a pH-adjusted IJ (B) as a composition containing the polysaccharide derivative (A).
- the pH adjuster (B) may be supplied without being mixed, or may be previously mixed.
- the time of mixing is not particularly limited, but is selected before use or during use.
- the composition of the multi-leak conductor (A) and the pH adjuster (B) may contain other substances as necessary, and the other substances may be mixed with the polysaccharide derivative. It doesn't have to be mixed.
- the pH adjusting agent (B) used in the present invention is mainly used for adjusting the pH of the polysaccharide derivative or the cross-linkable polysaccharide composition of the present invention to 7.5 to 12 with water. Or a salt (powder) or the like.
- the pH adjuster (B) is not particularly limited, Specific examples thereof include an aqueous solution or powder of sodium hydrogen carbonate, a phosphate buffer (disodium hydrogen phosphate and potassium dihydrogen phosphate), and a buffer of ammonium acetate and ammonia. Above all, sodium hydrogencarbonate can be suitably used in terms of safety, because its approximately 7% aqueous solution (pH 8.3) is used as a vein at as a medical pH adjuster.
- compositions examples include a water solution having a polyconcentration of 1 to 80% (W / V) and water separately maintained and adjusted to pH 7.5 to 10.5. Component systems.
- both can be mixed at the time of use to obtain a mixed aqueous solution having a final concentration of the polysaccharide derivative of 0.1% to 60% (W / V).
- the salt of the pH adjuster (B) is added to an aqueous solution having a polysaccharide derivative concentration of 1 to 80% (W / V) and mixed while dissolving, to obtain a final concentration of the polysaccharide derivative.
- the mixing can be performed by a usual mixing method, but it is preferable to perform the mixing until the mixing state becomes uniform, and it is sufficient that the mixing is uniform to such an extent that the desired reaction proceeds.
- the present invention also provides a crosslinkable polysaccharide composition (sometimes abbreviated as a polysaccharide composition) comprising the polysaccharide derivative (A) and another polymer (C).
- the polymer (C) is used for adjusting the hardness and properties of the hydrogel when the polysaccharide composition is crosslinked.
- the polybranide derivative (A) may be used alone or in combination of two or more. Further, the composition may contain the pH adjuster (B).
- the polymer (C) is not particularly limited, two or more polymers (C) are included in one molecule of the polymer (C). It is preferable to use those having a primary amino group, a thiol group, or a hydroxyl group.
- Specific examples of the polymer (C) include polyalkylene glycol derivatives, polypeptides, polysaccharides and derivatives thereof.
- the content of the polymer (C) in the polysaccharide composition of the present invention is not particularly limited, it is preferably blended at 5 to 50% by mass based on the whole polysaccharide composition.
- the polymer (C) can be used alone or in combination of two or more.
- polyalkylene glycol derivative examples include a polyethylene glycol (PEG) derivative, a polypropylene glycol derivative, a polybutylene glycol derivative, a polypropylene glycolone-polyethylene glycolone block copolymer derivative, and a random copolymer derivative.
- PEG polyethylene glycol
- polypropylene glycol derivative examples include ethylene glycol, diglycerol, pentaerythritol, and hexaglycerol.
- the molecular weight of the polyalkylene glycol derivative is preferably from 100 to 50,000. More preferably, it is between 1,000 and 20,000.
- the polyethylene dalicol derivative is not particularly limited, and examples thereof include an ethylene glycol-type polyethylene glycol derivative having a thiol group at both terminals and having a weight average molecular weight of 1,000, 2,000, 6,000 or 1 ⁇ , 000, Ethylene glycol type polyethylene glycol derivative having an amino group at both ends and having a weight average molecular weight of 1,000, 2,000, 6,000 or 10,000, and a weight average molecular weight having a thiol group at three terminals of 5,000 Or a trimethylolethane-type polyethylene glycol derivative of 10,000, a trimethylolone with an amino group at three terminals and a weight average molecular weight of 5,000 or 10,000.
- the term “1 weight-average molecular weight” is one of the numerical values that represent the average molecular weight of a coordinator. Since a polymer is a mixture of molecules having the same basic structural unit and different molecular lengths (chain lengths), it has a molecular weight distribution according to the difference in molecular chain length.
- the average molecular weight is used to indicate its molecular weight.
- the average molecular weight includes a weight average molecular weight, a number average molecular weight, and the like. Here, the weight average molecular weight is used.
- the value of the weight average molecular weight (100%) includes those having an upper limit of 110% and a lower limit of 90%.
- Polyethylene glycol derivatives can be prepared, for example, according to the method described in Chapter 22 of Polyethylene Glycol) Chemistry: Biotechnical and Biomedical Applications, edited by J Milton Harris, Plenum Press, NY (.1992). Or multiple It can be modified to include a number of primary amino or thiol groups. It can be purchased from Nippon Oil & Fats Co., Ltd. as polyethylene glycol derivatives (Sunbright HGEO-20TEA, Sunbright PTE-10TSH, etc.).
- polypeptide examples include, but are not limited to, collagen, gelatin, albumin, and polylysine.
- polysaccharide include, but are not limited to, pectin, hyaluronic acid, chitin, chitosan, lipoxymethyl chitin, carboxymethyl chitosan, chondroitin sulfate, keratin sulfate, keratosulfate, heparin and derivatives thereof.
- a suitable combination of the polysaccharide derivative (active esterified polysaccharide) (A) and the polymer (C) is as follows. It is as follows. In these combinations, the shape (sheet, powder, liquid) of the combination can be appropriately selected by referring to examples described later.
- Ethylene glycol PEG derivative with thiol groups at two ends ethylene glycol PEG derivative with amino groups at two ends, trimethylolethane PEG derivative with thiol groups at three ends, amino at three ends
- Group-containing trimethylolethane-type PEG derivative 4-terminal thiol group-containing pentaerythritol-type PEG derivative, 4-terminal amino group-containing pentaerythritol tonole type PEG derivative, 8-terminal thiol-containing hexylglycerol port PEG derivative, Hexaglycerol PEG derivative with amino groups at eight terminals, albumin, gelatin, collagen, polylysine, pectin, chitosa Chitin and carboxymethyl (CM)
- C polymer selected from the group consisting of chitin and active esterified pectin.
- Ethylene glycolone type PEG derivative having a thiol group at two terminals ethylene dalicol type PEG derivative having an amino group at two terminals, trimethylolethane type PEG derivative having a thiol group at three terminals, three Trimethylolethane type PEG derivative with amino group at terminal, pentaerythritol type PEG derivative with four terminal thiol group, pentaerythritol type PEG derivative with four terminal amino group, thiol group at eight terminal
- Polymer (C) and Active Esterified CM Dext The combination of the emissions.
- Ethylene glycol PEG derivative with thiol groups at two ends Ethylene glycol PEG derivative with amino groups at two ends, trimethylolethane PEG derivative with thiol groups at three ends, at three ends Trimethylolethane-type PEG derivative with amino group, pentaerythritol-type PEG derivative with four terminal thiol groups, pentaerythritol-type PEG derivative with four terminal amino groups, hexaglycere with eight terminal thiol groups
- Ethylenedaricol-type PEG derivative having a thiol group at two terminals ethylenedaricol-type PEG derivative having an amino group at two terminals, trimethylolethane-type PEG derivative having a thiol group at three terminals, three terminals
- a trimethylolethane-type PEG derivative having an amino group at its terminal a pentaerythritol-type PEG derivative having a thiol group at its four terminals, a pentaerythritol-type PEG derivative having an amino group at its four terminals, and having a thiol group at eight terminals
- Ethylene glycol-type PEG derivatives having thiol groups at both terminals and having a weight average molecular weight of 1,000, 2,000, 6,000 or 10,000, and having weight average molecular weights having an amino group at both terminals of 1,000 or 2 2,000, 6,000 or 10,000 ethylene glycol-type PEG derivatives, three terminal thiol groups Trimethylolethane-type PEG derivative with a weight average molecular weight of 5,000 or 10,000, three amino Trimethylolethane-type PEG derivative having a weight average molecular weight of 5,000 or 10,000, and a diglyme having a weight average molecular weight of 5,000, 10,000 or 20,000 having four thiol groups.
- Serol-type PEG derivative diglycerol-type PEG derivative having an amino group at four terminals and having a weight average molecular weight of 5,000, 10,000 or 20,000, and weight-average molecular weight having a thiol group at four terminals and having a weight-average molecular weight of 10, 000 or 20, 00 0 pentaerythritol-type PEG derivative, pentaerythritol-type PEG derivative having amino groups at four terminals and having a weight-average molecular weight of 10,000 or 20,000, and thiol group at eight terminals having a weight-average molecular weight of 10,000 or Hexaglycerol type PEG derivative with 20,000 and hexylglycerol with a weight-average molecular weight of 10,000 or 20,000 having eight terminal amino groups
- Diglycerol-type PEG derivatives diglycerol-type PEG derivatives having amino groups at four terminals and having a weight-average molecular weight of 5,000, 10,000 or 20,000, and weight-average molecular weights having four-terminal thionole groups
- SD / AP 20/80 to 98-2 (W / W)
- the amount of the polymer (C) is more than 80% by mass, the self-crosslinking property of the polysaccharide derivative (A) is hardly obtained due to the inhibition of the polymer (C), and conversely, the amount is less than 2% by mass: ⁇ This is because it is difficult to adjust the hardness and properties of the finally obtained hydrogel.
- the polysaccharide composition of the present invention may further contain widely known additives as long as the properties of the present invention are not impaired.
- fillers such as curing catalysts, fillers, plasticizers, softeners, stabilizers, dehydrating agents, coloring agents, anti-sagging agents, thickeners, physical conditioners, reinforcing agents, Detergents, anti-aging agents, detergents, antioxidants, UV filters, pigments, solvents, carriers, excipients, preservatives, binders, antioxidants, leavening agents, etc.IJ, dissolution aid Agents, preservatives, buffers, diluents and the like.
- These mouth-watering agents can be used alone or in combination of two or more.
- the polysaccharide composition can be formed into a desired form such as a sheet, a powder, and a liquid.
- the powdery polysaccharide composition can be prepared by mixing the powdery polysaccharide derivative (A) with the powdery polymer (C). Further, a powdery polysaccharide composition containing a salt of a pH adjuster obtained by mixing a powdery salt of a pH adjuster with the powdery polysaccharide composition can also be prepared.
- a granulated product can be prepared by granulating the powdery polysaccharide composition or the powdery polysaccharide composition containing a salt of a pH adjusting agent, and the powdery polysaccharide composition, ⁇ ⁇
- a sheet or plate can be prepared by pressing the above powdery polysaccharide composition containing a salt of an adjusting agent under pressure.
- the sheet-shaped polysaccharide composition is prepared by adhering the polymer (C) in powder form to the heat-dried sheet and the freeze-dried sheet of the polysaccharide derivative ( ⁇ ), or by adhering the polymer (C) by a coating method.
- attachment refers to a state in which the surface of the sheet is covered with the polymer (C) by impregnating the surface of the sheet with the polymer (C). If the sheet has a porous structure, the polymer (C) will cover the sheet surface and the inner surface of the pores inside the sheet.
- aqueous solution of polysaccharide derivative ( ⁇ ) and an aqueous solution of polymer (C) Type By mixing these aqueous solutions, a hydrogel comprising the conductor (A) and the polymer (C) can be prepared.
- the aqueous solution of the polysaccharide derivative (A) preferably has a concentration of 1 to 80% (W / V), and the aqueous solution of the polymer (C) has a concentration of 1 to 80% (W / V).
- the water for dissolving the polymer (C) may be water adjusted to pH 7.5 to 10.5, or a salt of pH adjuster may be added during mixing using pure water or a buffer. You may.
- the final concentration of the polysaccharide derivative (A) and the polymer (C) is 0.1 to 80% (W / V). It is preferred that there be.
- the sheet-shaped polysaccharide composition can be crosslinked by providing it in the presence of water.
- the above-mentioned pH adjuster can be used as water.
- the pH adjuster is preferably an aqueous solution having a pH of 7.5 to 10.5.
- the pH regulator may be adhered in powder form to the sheet-like polysaccharide composition.
- the polysaccharide composition in the form of a sheet is prepared by dissolving the polysaccharide derivative (A) in water, developing the solution into a desired shape and drying, and adding the polymer (C) to the obtained sheet of the polysaccharide derivative (A). It is formed through an attaching step of attaching. In the impregnating step, the polymer (C) and a solution containing a non-aqueous volatile organic solvent are impregnated in a sheet and dried, so that the surface of the sheet-shaped polysaccharide derivative (A) is not impaired. (C) can be attached.
- the “non-aqueous volatile organic solvent” means an organic solvent that is incompatible with water and volatilizes. Examples of the non-aqueous volatile organic solvent include, but are not particularly limited to, chloroform and dichloromethane.
- the polysaccharide derivative of the present invention and the polysaccharide composition containing the same can be developed into a desired shape and It can be used as a medical treatment material.
- Medical treatment material means a substance that is made of a safe component that has low toxicity and is harmful to the living body when used in the living body, and is acceptable to the living body.
- the medical treatment material may have properties on the living body or may have non-activity. Preferably, it is biodegradable. In tandem, can be used for hemostasis, adhesion, sealing, and ⁇ or fixation of paper tissues and organs.
- the dosage form of the medical treatment material is not particularly limited, and examples thereof include sheet, powder, paste, and aerosol.
- the medical treatment material can be used in a mixture with the above-mentioned ⁇ ⁇ regulator.
- the medical treatment material When mixing the medical treatment material with the ⁇ adjuster, it may be premixed before mixing (pre-mixing) or may be appropriately mixed on the spot when used.
- a medical treatment material By adding an aqueous solution of a ⁇ ⁇ regulator at the time of use, a medical treatment material can be applied to a desired local area.
- additives can be used for the medical treatment material as long as the properties of the present invention are not impaired.
- No particular limitation is imposed on the filler, but carriers, excipients, preservatives, stabilizers, binders, antioxidants, swelling agents, etc.I, dissolution aids, preservatives, buffers, diluents And the like.
- These additives can be used alone or in combination of two or more.
- additives include water, physiological food: feK, pharmaceutically acceptable organic solvents, gelatin, collagen, polyvinyl alcohol, polyvinyl pyrrolidone, carboxyl vinyl polymer, carboxymethyl cellulose sodium, and polyacryl.
- the resulting physiological pH buffer may be used.
- the carrier to be used is appropriately or in combination selected from the above depending on the site to be used, but is not limited thereto. It can also be prepared as a formulation such as aerosol paste with an appropriate propellant.
- the medical treatment material can be provided as a kit containing the above-mentioned pH adjusting agent for convenience in use.
- the medical treatment material may be included in the package or package together with or separately from the medical treatment material, in a state where the polysaccharide derivative (A), the polysaccharide composition and / or the pH adjusting agent are not mixed. it can. Including other components that can be used as medical treatments! / Everything is good.
- the polysaccharide derivative or polysaccharide composition can be included in the kit as a powder, sheet, or water with or without a zk solution or a powdery pH regulator.
- Medical treatment materials can be used as hemostats and / or adhesives.
- a hemostatic material is used for the purpose of stopping blood at or near a bleeding point of a living body.
- Glue is a living paper tissue, organ or tissue It is used for bonding at least one part to other parts. Attach the medical treatment material to the target area, and then attach, fix, settle or crimp the other desired area for a certain period of time. At that time, fixing tools and the like can be used.
- the polysaccharide derivative or polysaccharide thread composition may or may not be contained in the hemostatic material and / or the adhesive as a powder, sheet, or aqueous solution containing or without an aqueous solution or a powdery pH regulator. it can.
- the present invention comprises translocating the medical treatment material to a desired site in the presence of water, and thus provides hemostatic and / or biological treatment. Or provide a bonding method.
- Contact with a desired site is achieved by spraying, filling, or applying a powdered medical treatment material. This can be achieved by using a sheet-shaped medical treatment material, foraging, filling, coating, crimping, and standing. Achieved by applying, spraying, spraying, dripping, painting, or applying a liquid medical treatment material.
- hemostasis and / or adhesion of a living body can be achieved.
- the polysaccharide derivative of the present invention has an active ester group and an active hydrogen-containing group in one molecular chain, and the active ester group and the active hydrogen-containing group react to form a cross-linked structure.
- tissue adhesive strength adheresive strength
- the material itself or its ⁇ substance has low toxicity, and the material is designed to have bioabsorbability since the polysaccharide is the main skeleton.
- the polysaccharide of the present invention Derivatives can be easily used by anyone because they can reduce the number of preparation operations to be performed in advance of use, can respond quickly to sudden applications, and require no special equipment for their use.
- the polysaccharide derivative can be used both in the workplace and as a polysaccharide composition, so that it can be used for a wide variety of applications. Since the polysaccharide composition of the present invention uses the polysaccharide derivative of the present invention having the above characteristics, the properties of the present invention are not impaired.
- the polysaccharide derivative and the polysaccharide composition of the present invention can be processed into various shapes such as powder, sheet, microparticle, etc., and can be used and divided according to the purpose.
- the method for producing the polysaccharide derivative and the polysaccharide composition of the present invention is simple because it is only necessary to mix necessary reagents and heat the mixture, so that a special device or the like is not required.
- the polysaccharide derivative of the present invention and its composition are suitable as medical treatment materials such as hemostatic materials and adhesives.
- a polysaccharide having an acid type carboxy group or a polysaccharide having an acid type carboxymethyl group, that is, an acid group-containing polysaccharide was prepared as a raw material polysaccharide as a raw material of the active esterified polysaccharide (polysaccharide derivative) of the present invention.
- Pectin (GE NUpectin USP-H, CP Kelco) was suspended in 900 mL of 1% aqueous methanol solution (100% methanol, 500 mL of Wako Pure Chemical Industries, Ltd.). 0% hydrochloric acid (HCl, Wako Pure Chemical Industries, Ltd .: p. The mixture was adjusted to HI. 0 and stirred at 25 ° C for 2 hours. The actin in the suspension was collected using a suction funnel, washed with 2 L of 80 V o 1% aqueous methanol solution, and finally replaced with 100% methanol, and then dried. Thus, acid-type pectin was prepared.
- Acid-type CM dextran B was prepared in the same manner as in (I), except that the amount was changed to 10 g.
- Acid-CM pullulan was prepared in the same manner as in (I)-(3) except that the amount was changed to 0 g.
- the reaction solvent is DMSO
- the electrophilic group-introducing agent is N-hydroxysuccinimide (NHS) (Wako Pure Chemical Industries, Ltd .: h)
- the dehydrating condensing agent is 1-ethyl.
- EDC Activated esterified polysaccharide (polysaccharide derivative) was prepared using Wako Pure Chemical Industries, Ltd. ⁇ $ 3 ⁇ 4).
- CM dextran B (carboxymethyl group content: 0.29 mmol / g) 2.Og was added to DMS0200 g and dissolved by stirring at 100 ° C for 15 hours. . Thereafter, 1.12 g (5.8 mmo 1) of NHS and 0.333 g (2.9 mmo 1) of EDC were added, and the mixture was stirred at 25 for 24 hours. The reaction solution was dropped into 2 L of anhydrous acetone, and the precipitate was collected using a suction funnel. The resulting precipitate was washed with 1 L of anhydrous acetone and dried under reduced pressure. As a result, active esterified CM dextran B was prepared.
- the ratio of ZZX and YZX is as follows.
- Example 7 Preparation of active esterified CM pullulan 2.0 g of (I)-(5) acid-form CM punorellan (carboxymethyl group content: 1.28 mmol / g) was added to 0200 g of DMS, and dissolved by stirring at 100 ° C for 15 hours. Thereafter, 0.294 g (2.56 mmo 1) of NHS and 491 g (2.56 mmo 1) of EDCO were added, and the mixture was stirred at 25 ° C for 24 hours. The reaction solution was dropped into 2 L of anhydrous acetone, and the precipitate was collected using a suction funnel. The resulting precipitate was washed with 1 L of anhydrous acetone and dried under reduced pressure. Thus, an activated esterified CM pullulan was prepared.
- the ZZX and Y / X ratios are as follows.
- the NHS introduction ratio was calculated for the active esteri-dani polysaccharide (polysaccharide derivative) obtained in Examples to 7 of ( ⁇ ).
- the NHS introduction rate is the ratio of the content of the active ester group of the obtained polysaccharide derivative to the content of the carboxy group or the carboxymethyl group present per unit weight of the raw material polysaccharide as the raw material of the polysaccharide derivative.
- the NHS group content (Cmmo 1) in the sample described later can be obtained.
- the concentration of the NHS standard solution was 5 mM
- the solution was diluted with pure water (dilution factor H).
- the NHS group content (Cmmo1) of the active esterified polysaccharide was calculated from the measured absorbance.
- the NHS introduction rate of the active esteri-dani polysaccharide was determined by the following equation (3). The results are shown in Table 2 below.
- the self-crosslinking property was tested on the active ester-i-dani polysaccharide obtained in Examples 1 to 7 of (II).
- 0.2 g of the active esterified polysaccharide was weighed into a clean test tube (Larbo LT-15100, Thermone ring) having a capacity of 1 OmL, and 1 mL of pure water was added thereto to mix and mix.
- aqueous sodium hydrogen carbonate (W / V) sodium hydrogen carbonate, Wako Pure Chemical Industries, Ltd., lmL (pH 8.3)
- W / V sodium hydrogen carbonate
- Wako Pure Chemical Industries, Ltd., lmL (pH 8.3) was added as a pH adjuster, and a test tube mixer (MT-31, MT-31) was added.
- the mixture was mixed at about 2,000 rpm for about 1 minute using Yamato Science Co., Ltd.
- the state of the test tube contents before and after the mixing was visually checked.
- the sample having fluidity was judged as “No self-crosslinking property (1)”, and the one in which the content of the test tube after mixing was a lump (hydrogel) was judged as “Self-crosslinking property (+)”.
- the results are shown in Table 2 above.
- a strip of pig skin having a width of l cm and a length of 5 cm was cut out.
- the dermis of the pig skin was exposed, and the exposed surface was used as the adhesive surface.
- the bonding area was defined as 1 cm ⁇ 1 cm.
- 0.2 g of the lipophilic esterified polysaccharide of Examples 1 to 7 was weighed, 100 L of a solution prepared by dissolving in 1 mL of pure water was applied to the adhesive surface, and then 8.3% hydrogencarbonate was added. 10 L of a sodium aqueous solution (W / V) was added and mixed.
- Examples 1 to 7 an 8.3% aqueous solution of sodium hydrogen carbonate (W / V) (sodium hydrogen carbonate, manufactured by Wako Pure Chemical Industries, Ltd.) (pH 8.3) was added to lmo 1 / L diphosphate. The same experiment was performed with a sodium aqueous solution (disodium phosphate, Wako Pure Chemical Industries) (pH 9.1). As a result, all of Examples 1 to 7 had self-crosslinking property (+)
- Examples 5 and 7 the same experiment was performed by changing 10 ⁇ L of 8.3% aqueous sodium hydrogencarbonate solution (W / V) to lmo 1ZL aqueous solution of disodium phosphate ( ⁇ 9.1) l O ⁇ L. .
- the adhesive strengths of Examples 5 and 7 were 115 4 Pa.
- a polysaccharide composition was prepared by blending the active ester ester polysaccharide derivative with the polymer (C). (Example 8) Active esterified pectin composition 1
- 0.2 g of the active esterified peptide of Example 1 was taken, added to 71 mL of yarn, and mixed to prepare a main solution.
- 0.2 g of a pentaerythritol-type polyethylene glycol (PEG) derivative having four thiol groups at terminal ends (Sanbright PTE-10TSH, weight average molecular weight 10,000, Nippon Oil & Fat column) was weighed out, and 8.3 g was weighed.
- a sub-liquid was prepared by adding and mixing with 1 mL (pH 8.3) of a 1% aqueous sodium hydrogen carbonate solution (W / V).
- a polysaccharide composition was prepared by mixing 1 mL of the main solution and 1 mL of the auxiliary solution in a test tube.
- the polysaccharide composition immediately after the mixing of the main solution and the sub-solution had fluidity, but when further mixed at about 2,000 rpm for about 1 minute using a test tube mixer, the contents of the test tube became massive. (Hydrated gel).
- Example 8 The active ester of Example 1 was used.
- the pentaerythritol-type polyethylene glycol derivative used in Example 8 was replaced with a glycerol-type polyethylene glycol derivative having an amino group at eight terminals (Sanbrite HGEO-20T EA, weight average molecular weight 10,000, Nippon Oil & Fat: t ), And a polysaccharide composition was prepared in the same manner as in Example 8.
- Example 1 The active '[ ⁇ raw estenolay dang cutin of Example 1 was used.
- a polysaccharide composition was prepared in the same manner as in Example 8, except that the pentaerythritol-type polyethylene glycol derivative used in Example 8 was changed to bovine serum albumin (Sigma).
- Example 8 The active esterified peptide of Example 1 was used.
- Pentaery used in Example 8 A polysaccharide composition was prepared in the same manner as in Example 8, except that the thallitol-type polyethylene glycol derivative was changed to 0.02 g of Pectin (GENUpectin USP-H, CP Kelco
- a polysaccharide composition was prepared by mixing 1 mL of the main solution and 1 mL of the auxiliary solution in a test tube.
- the polysaccharide composition immediately after the mixing of the main solution and the auxiliary solution has fluidity, but when further mixed at about 2,000 rpm for about 1 minute using a test tube mixer, the contents of the test tube become clumpy. (Hydrated gel).
- 0.2 g of the active esterified dextran A of Example 3 was weighed, added to 1 mL of pure water and mixed to prepare a main solution.
- a pentaerythritol-type polyethylene glycol (PEG) derivative having amino groups at four terminals (weight average molecular weight: 20, 000, "Poly (ethylene Glycol) Chemistry: Biotechnical and Biomedical Applications, edited by J Milton Harris, Plenum Press, NY (1992) ”) 0.2 g was weighed, added to 1 mL (8.3%) of 8.3% sodium hydrogen carbonate aqueous solution (W / V) and mixed to prepare an auxiliary liquid. .
- a polysaccharide composition was prepared by mixing 1 mL of the main solution and 1 mL of the auxiliary solution in a test tube.
- the polysaccharide composition immediately after the mixing of the main solution and the auxiliary solution has fluidity.However, using a test tube mixer I ', mixing at approximately 2,000 rpm for approximately 1 minute, The product became a lump (a hydrogel).
- An aqueous solution obtained by adding and mixing 0.2 g of the active esterified peptide of Example 1 with 1 mL of pure water was used as a main solution. 8.
- a 3% aqueous solution of sodium bicarbonate (W / V) was used as a pH adjusting solution.
- a liquid medical treatment material 1 composed of a main liquid and a pH adjusting liquid was prepared. The main liquid and the pH adjustment liquid can be mixed and used in the application section.
- aqueous solution obtained by taking 0.2 g of the active esterified peptide of Example 1 and adding it to 1 mL of pure water and mixing was used as a main solution. Separately, it has a thiol group at the above four terminals 0.2 g of the pentaerythritol-type polyethylene glycol derivative was weighed, added to 1 mL of an 8.3% aqueous sodium hydrogen carbonate solution (W / V), and mixed to obtain a zij solution, which was used as a ij solution.
- a liquid medical treatment material 2 composed of a main liquid and a liquid ij was prepared. The main liquid and the sub liquid can be mixed and used in the application part.
- a powdered medical treatment material obtained by mixing 0.5 g of a powder obtained by freeze-grinding the active esterified CM dextran A1 of Example 3 and 0.055 g of a sodium hydrogencarbonate powder was obtained. Produced. Can be sprayed and applied to the application area.
- a powdered medical treatment material kit comprising 5 g and 100 ⁇ L of a separately prepared 8.3% aqueous sodium hydrogen carbonate solution (W / V) was prepared. Can be sprayed and applied to the application area.
- Sheet-shaped medical treatment material containing active esterified pectin and kit 1 30 mL of 5% aqueous solution (W / V) of active esterified pectin of Example 1 was prepared,
- Sheet-shaped medical treatment material containing active esterified pectin and kit 2 The sheet-shaped medical treatment material prepared in Example 20 was used. A coating solution was prepared by dissolving 5 g of a glycerol-containing polyethylene glycol derivative having an amino group at each of the eight terminals in 10 mL of chloroform (Honorem, Wako Pure Chemical Industries, Ltd.). The sheet-shaped medical treatment material prepared in Example 20 was immersed in the coating solution for 1 minute, and then air-dried at 25 ° C. for 3 hours.
- a sheet-shaped medical treatment material comprising an active esterified pectin and a polysaccharide composition of a glycerol-type polyethylene diol cone derivative having eight terminal amino groups was obtained.
- a sheet-shaped medical treatment material kit (2) composed of 1 mL of an separately prepared 8.3% aqueous sodium hydrogen carbonate solution (W / V) and the sheet-like medical treatment material was prepared. Produced. A sheet-shaped medical treatment material can be attached to the application area, and an 8.3% aqueous sodium hydrogen carbonate solution (W / V) can be applied.
- the polysaccharide derivative of the present invention (Examples 1 to 7) has an adhesive strength of 50 to 120 (g / cm 2 ) and is usually required as a hemostatic material or a medical adhesive. 30-150 (g / cm 2 ). Further, the adhesive strength falls within the range of 50 to 120 (g / cm 2 ) suitable for such use.
- the polysaccharide thread composition of the present invention (Examples 8 to 15) also has an adhesive strength of 82 to 128 (g / cm 2 ) and is suitable as a hemostatic material or a medical adhesive.
- the polysaccharide derivative and the polysaccharide composition of the present invention are used as a tissue adhesive, they meet clinical requirements in terms of tissue adhesive strength (adhesive strength) and do not use bio-derived materials in terms of safety. Since natural or artificial polysaccharide is used as the main skeleton, risks such as infectious diseases can be avoided. The material itself is designed to have low toxicity and its biodegradability and absorbability. In addition, the polysaccharide derivative of the present invention reduces the number of preparatory operations to be performed in anticipation of use, can respond quickly to sudden application, and requires no special equipment for its use. can do.
- the polysaccharide derivative can be provided as a warworm or as a polysaccharide composition, it can be used for a wide variety of applications. Since the polysaccharide composition of the present invention uses the polysaccharide derivative of the present invention having the above characteristics, the characteristics of the present invention are not impaired. Furthermore, the polysaccharide derivative and the polysaccharide composition of the present invention can be processed into various shapes such as powder, sheet, and composite, and can be used and divided according to the purpose. When the polysaccharide derivative and the polysaccharide composition of the present invention are used, necessary reagents may be mixed, so that a special device or the like is not required and the method is simple. From the above properties, the polysaccharide derivative of the present invention and the composition thereof are suitable as medical treatment materials such as hemostatic materials and adhesives.
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Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005503470A JP4638817B2 (ja) | 2003-02-21 | 2004-02-20 | 架橋性多糖誘導体、その製造方法、架橋性多糖組成物および医療用処置材 |
US10/546,256 US7485719B2 (en) | 2003-02-21 | 2004-02-20 | Crosslinkable polysaccharide derivative, process for producing the same, crosslinkable polysaccharide composition, and medical treatment material |
EP04713180A EP1595892A4 (en) | 2003-02-21 | 2004-02-20 | NETWORKABLE POLYSACCHARIDE DERIVATIVE, PRODUCTION PROCESS THEREFOR, COMPOSIBLE POLYSACCHARID DERIVATIVE COMPOSITION, AND MATERIAL FOR MEDICAL TREATMENT |
US12/178,030 US20080300218A1 (en) | 2003-02-21 | 2008-07-23 | Crosslinkable polysaccharide derivative, process for producing the same, crosslinkable polysaccharide composition, and medical treatment material |
Applications Claiming Priority (6)
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JP2003044861 | 2003-02-21 | ||
JP2003-044861 | 2003-02-21 | ||
JP2003-111504 | 2003-04-16 | ||
JP2003111504 | 2003-04-16 | ||
JP2004001184 | 2004-01-06 | ||
JP2004-001184 | 2004-01-06 |
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US12/178,030 Continuation US20080300218A1 (en) | 2003-02-21 | 2008-07-23 | Crosslinkable polysaccharide derivative, process for producing the same, crosslinkable polysaccharide composition, and medical treatment material |
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WO2004081055A1 true WO2004081055A1 (ja) | 2004-09-23 |
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PCT/JP2004/001958 WO2004081055A1 (ja) | 2003-02-21 | 2004-02-20 | 架橋性多糖誘導体、その製造方法、架橋性多糖組成物および医療用処置材 |
Country Status (4)
Country | Link |
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US (2) | US7485719B2 (ja) |
EP (1) | EP1595892A4 (ja) |
JP (1) | JP4638817B2 (ja) |
WO (1) | WO2004081055A1 (ja) |
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JP2008029824A (ja) * | 2006-06-28 | 2008-02-14 | Terumo Corp | 医療用処置材 |
WO2009133763A1 (ja) * | 2008-05-01 | 2009-11-05 | テルモ株式会社 | 視認性医療用処置材 |
WO2011037065A1 (ja) | 2009-09-28 | 2011-03-31 | テルモ株式会社 | 活性エステル化多糖およびその製造方法 |
JP2012509139A (ja) * | 2008-11-19 | 2012-04-19 | アクタマックス サージカル マテリアルズ リミテッド ライアビリティ カンパニー | 繊維状組織シーラントおよびその使用方法 |
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KR20240115552A (ko) * | 2023-01-19 | 2024-07-26 | 주식회사 엘지화학 | 폴리머 재료 |
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JP2002080501A (ja) * | 2000-09-08 | 2002-03-19 | Japan Science & Technology Corp | 組織再生マトリックス用グリコサミノグリカン−ポリカチオン複合体とその製造方法 |
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Also Published As
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EP1595892A1 (en) | 2005-11-16 |
EP1595892A4 (en) | 2007-06-20 |
US20080300218A1 (en) | 2008-12-04 |
JP4638817B2 (ja) | 2011-02-23 |
US20060178339A1 (en) | 2006-08-10 |
JPWO2004081055A1 (ja) | 2006-06-08 |
US7485719B2 (en) | 2009-02-03 |
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