WO2009078492A1 - セルロース誘導体およびそのハイドロゲル - Google Patents
セルロース誘導体およびそのハイドロゲル Download PDFInfo
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- WO2009078492A1 WO2009078492A1 PCT/JP2008/073500 JP2008073500W WO2009078492A1 WO 2009078492 A1 WO2009078492 A1 WO 2009078492A1 JP 2008073500 W JP2008073500 W JP 2008073500W WO 2009078492 A1 WO2009078492 A1 WO 2009078492A1
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- Prior art keywords
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- cellulose derivative
- cellulose
- reaction
- gel
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B15/00—Preparation of other cellulose derivatives or modified cellulose, e.g. complexes
- C08B15/02—Oxycellulose; Hydrocellulose; Cellulosehydrate, e.g. microcrystalline cellulose
- C08B15/04—Carboxycellulose, e.g. prepared by oxidation with nitrogen dioxide
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- 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
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/14—Macromolecular materials
- A61L27/20—Polysaccharides
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/70—Carbohydrates; Sugars; Derivatives thereof
- A61K31/715—Polysaccharides, i.e. having more than five saccharide radicals attached to each other by glycosidic linkages; Derivatives thereof, e.g. ethers, esters
- A61K31/716—Glucans
- A61K31/717—Celluloses
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- 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
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
- A61L27/52—Hydrogels or hydrocolloids
-
- 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
- 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
- A61L31/14—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
- A61L31/145—Hydrogels or hydrocolloids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B11/00—Preparation of cellulose ethers
- C08B11/02—Alkyl or cycloalkyl ethers
- C08B11/04—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals
- C08B11/10—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals substituted with acid radicals
- C08B11/12—Alkyl or cycloalkyl ethers with substituted hydrocarbon radicals substituted with acid radicals substituted with carboxylic radicals, e.g. carboxymethylcellulose [CMC]
Definitions
- the present invention relates to a cellulose derivative substituted with a substituent having a specific carboxyl group strength of carboxymethyl cellulose, which is a cellulose derivative, and a hydrogel thereof.
- the cell mouth inducing of the present invention forms a hyde mouth gel in water.
- the powerful Hyde Mouth Gel is excellent in viscoelasticity and can form an indeterminate injectable gel that can be injected into a predetermined place with an injector such as a syringe. It can be preferably used.
- Carboxymethylcellulose derived from cellulose which is a natural biomass, is a water-soluble derivative and has good dispersibility and water retention, so it is used in various fields such as food and cosmetics.
- carboxymethylcellulose is inexpensive, it is used in the medical field as a raw material for poultices, X-ray cranes, bulk disintegrants, medicinal syrups, and anti-adhesion materials.
- Examples in which the carboxyl group of carboxymethylcellulose is modified to form an insoluble derivative are known.
- the international publication mWO O 1/0 4 6 2 6 5 describes polyanion containing carboxymethylcellulose.
- a water-insoluble inducement of a polyanionic polysaccharide comprising mixing a water-soluble polysaccharide, a nucleophile, and an activator in an aqueous mixture and an i3 ⁇ 4g method thereof are described.
- the temptation described here is insoluble in water, and is water-soluble when present at low concentrations in water, such as the gel of the present invention, and flows even when tilted at high concentrations. There is no description of gels with no viscoelasticity.
- International Publication No. WO 8 9/1 0 9 40 includes an acidic polysaccharide selected from the group consisting of carboxymethyl cellulose, carboxymethyl starch, and carboxymethyl chitin. All esters and partial esters with monocyclic and monocyclic alcohols, and salts with inorganic or organic bases of the partial esters are described. However, these polysaccharide incentives form an eight-sided gel. There is no description about this, and there is no suggestion of giving an injector Kalegel like the present invention.
- Japanese Patent Application Publication No. 2 0 0 0-5 1 3 4 3 has a polysaccharide polymer and one polysaccharide-rich chain attached to the liver, from a gel state to a solution state, and vice versa. Discloses a natural wound healing product that reversibly changes its state.
- a problem to be solved by the present invention is to provide a biodigestible cellulose derivative useful as an injectable gel that has high viscoelasticity but can be injected into a predetermined place with an injector such as a syringe. is there.
- an injector such as a syringe.
- a local drug delivery system can be created by impregnating the drug into the gel. Furthermore, if it has the property that it will eventually be decomposed or absorbed when injected into a living body, it can be preferably used as a scaffold material for regenerative medicine, etc.
- the inventors of the present invention have conducted intensive research for the purpose of finding an injectable gel that can be used in a living body and is excellent in safety and handleability. As a result, carboxymethyl cellulose has a specific functional group. As a result of the chemical modification, it was found that an injectable gel having high viscoelasticity and excellent handleability can be obtained, and the present invention has been achieved.
- the present invention is a cellulose derivative having a chemical structure represented by the following formula (1) as a repeating unit.
- RR 2 and R 3 are each independently represented by the following formulas (a), (b), and
- M is a hydrogen atom, alkali metal, or alkaline earth explosion
- X is a divalent hydrocarbon group having 1 to 10 carbon atoms
- Y is a divalent polyalkylene oxide having both oxygen atoms
- Z is 1 carbon atom. ⁇ 24 hydrocarbon group or one CO—R 4 (wherein R 4 is a hydrocarbon group having 1 to 23 carbon atoms).
- this invention is a hydrogel containing this cellulose derivative.
- the present invention is a medical material containing such a cellulose derivative.
- the present invention is an anti-adhesion material containing such cellulose attraction.
- the cellulose derivative #: of the present invention is a force having the chemical structure represented by the above formula (1) as a repeating unit.
- the same repeating unit; Also included in the present invention is a polymer formed by concatenating various repeating units based on the various RR 2 and R 3 pairs ⁇ "allowed in the above.” Best Mode for Carrying Out the Invention "
- the present invention is a cellulose derivative having as a repeating unit the chemical structure represented by the above formula (1).
- M is a hydrogen atom, an alkali pan, or an alkaline earth metal.
- the alkali metal include sodium, potassium, and lithium
- examples of the alkaline earth pot include magnesium and calcium.
- Sodium is preferred.
- X in the formula (c) is a divalent hydrocarbon group having 1 to 10 carbon atoms. Specific examples include a methylene group, an ethylene group, an n-propylene group, an isopropylene group, an n-butylene group, and an isoptylene group. A methylene group is preferred.
- Y is a divalent group derived from polyalkyleneoxide having oxygen atoms on both sides.
- the polyalkylene oxide specifically refers to polyalkylene ethers exemplified by polyethylene glycol, polypropylene glycol, polybutylene glycol and the like.
- the term “having oxygen atoms at both ends” refers to a structure that is involved in bonding with a group obtained by removing hydrogen atoms from hydroxyl groups at both ends of polyalkylene oxide.
- examples include groups derived from 1,3-polypropylene glycols represented by —O—, polyethylene glycols represented by — (O—CH 2 —CH 2 —) n —O—, and the like. Further, it may be a group derived from a copolymer of the above polyethylene glycol and polypropylene glycol, for example, a copolymer represented by PEO-PPO.
- n represents the number of repeating units.
- the number of repeating units n is preferably 2 to 100, more preferably 3 to 70.
- Z is a carbon number of 1 to 2 4 hydrocarbon group or - C_ ⁇ - R is 4, R 4 is 1 to 2 carbon atoms
- hydrocarbon group having 1 to 24 carbon atoms of Z include methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, octyl group, nonyl group, lauryl group, stearyl group, etc.
- An aromatic hydrocarbon group can be illustrated. Of these, stearyl and oleyl groups are preferred.
- R 4 is a hydrocarbon group having 1 to 23 carbon atoms.
- R 4 include methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, octyl group, nonyl group, heptade deca Nyl, Heptodecenyl, Lauryl, Stearyl and other linear alkyl groups, Cyclohexyl, Cyclopentyl, Cyclohexylnonyl, Cholesteryl and other alkyl groups, Unoleyl alkyls such as oleyl Examples thereof include aromatic hydrocarbon groups such as a group, a phenyl group, a naphthyl group, and a benzyl group. Among these, heptodecyl group and heptodecenyl group are strong.
- Z—CO—R 4 is an acyl group derived from a fatty acid.
- the sacyl group include lauroyl group, palmitoyl group, stearoyl group and oleoyl group.
- —CO—R 4 of Z is an acyl group derived from Yoshika 3 ⁇ 41 ⁇ ⁇ .
- Preferred examples thereof include a benzoyl group and a naphthoyl group. Among these, stearoyl group and oleoyl group energetics are used.
- the degree of substitution means the equivalent of each substituent when the sum of the equivalents of substituent (a), substituent (b) and substituent (c) is 3.
- the sum of the difficulty of substitution (b) and the substitution of substituent (c) is preferably 0.3 to 2.0, more preferably 0.5 to 1.8, and even more preferably 0. 6 ⁇ : 1.2.
- the ratio between the degree of substitution of the substituent (b) and the displacement of the substituent (c) is not particularly limited, but it is preferable that the substituent (b) exists more than the substituent (c).
- RcZb which is a ratio of carrying the substituent (c) to the degree of substitution of the substituent (b)
- RcZb which is a ratio of carrying the substituent (c) to the degree of substitution of the substituent (b)
- the degree of substitution of the substituent (c) is 0.001 to 0.50, preferably 0.005 to 0.40. By controlling the degree of substitution of the substituent (c) within this range, it is possible to obtain an injectable gel having an appropriate viscoelasticity and using a device having a capillary such as a syringe.
- the degree of substitution of the substituent (c) can be determined from the ratio of carbon content and nitrogen content by elemental analysis.
- the weight average molecular weight of the cellulose derivative is 1 X 10 3 ⁇ 5 X 10 6, is preferably 5 X 10 4 ⁇ 5X 10 6, more preferably a 5X 10 4 ⁇ 1 X 10 6.
- the weight average hepatic amount of the cellulose derivative changes due to the introduction of the substituent (c) introduced into the cellulose, and the amount increases compared to the cellulose derivative before the introduction of the substituent (c).
- a cellulose derivative #f having the desired amount can be obtained by appropriately using the raw material carboxymethylcellulose.
- the raw material carboxymethylcellulose is derived from cellulose.
- the cellulose may be plant-derived cellulose or bacterial cellulose produced by a fermentation method, and is not particularly limited.
- Carboxymethyl cellulose is obtained by reacting cellulose with monochloroacetic acid or its sodium salt in a strong alkaline solution such as sodium fibrosis.
- the position of substitution of the carboxymethyl group in the cellulose skeleton is not particularly ⁇ , but is preferably mainly at the C-16 position.
- the cellulose derivative of the present invention can be obtained from the condensation reaction (i) of carboxymethylcellulose and (ii) component P represented by the following formula (2).
- the component P is a compound represented by the following formula (2) and having an amino group on one side.
- Such an amino group may form a salt with an appropriate acid or may be an amino group of I, and is not particularly limited.
- the compound of formula (2) is preferably migable by the following reaction.
- A represents a protecting group for an amino group.
- Reaction 1 is a coupling reaction between an amino group-protected amino acid derivative represented by A—NH—X—COO— and a compound having a H—Y—Z structure and a hydroxyl group at one end.
- a condensing agent that forms an ester bond is used, and a condensing agent such as carbodiimide is used.
- Preferred examples include dicyclohexyl carpositimide.
- protecting group A for the amino group specifically, known protecting groups such as a benzyl group, a t-butyloxy group sulfonyl group (Boc group) and the like can be used. Of these, the Boc group is preferred.
- A—NH—X—CO—Y—Z obtained by the reaction 1) is not limited to the above-mentioned coupling reaction (reaction 1)), and any synthetic method can be used.
- the amino group is protected Forced Lupoxyl Basic Amino acid induction that is a lingual ester may be synthesized by ester interaction with a compound having a H—Y—Z structure and a hydroxyl group.
- Reaction 2 is a deprotection reaction of an amino group, and any reaction can be used as long as it is a known reaction used in ordinary peptide synthesis.
- A is a Boc group
- the deprotection reaction using an acid is good, and an acid such as trifluoroacetic acid is preferably used.
- the method for purifying the reaction product is not particularly limited, but may be separated and purified by chromatography if desired.
- Reactions 1) and 2) may be either liquid phase synthesis or solid phase synthesis.
- the reaction method and purification method are particularly limited.
- the cellulose derivative of the present invention is obtained by a coupling reaction between the one-terminal amino group of H 2 N—X—CO—Y—Z, which is a compound obtained by the above reaction, and the carboxyl group of carboxylmethylcellulose.
- H 2 N—X—CO—Y—Z should be introduced into the reaction system so that the amount of H 2 N—X—CO—Y—Z is 0.01 to 0.4 equivalents relative to the molar equivalent of the force lpoxyl group in the starting material, carboxymethylcellulose. Yes. At this time, the charging amount of H 2 N—X—CO—Y—Z may be set to 3 ⁇ 3 ⁇ 4 considering the reaction efficiency.
- the coupling reaction should be carried out in a solution containing water due to the properties of carboxymethylcellulose; ⁇ ! In this case, the reaction may be water alone, an organic solvent compatible with water may be mixed, or a two-layer reaction using an organic solvent incompatible with water may be performed.
- the organic compatibility with water includes alcohols such as methanol and ethanol, tetrahydrofurans such as tetrahydrofuran, cyclic ethers such as dioxane, ethers such as polyethylene oxide compounds, amides such as dimethylformamide and dimethylacetamide, Examples thereof include organic bases such as pyridine and piperidine, dialkyl sulfones such as dimethyl sulfoxide, and ketones such as acetone.
- the reaction between force lpoxymethyl cellulose and ⁇ 2 ⁇ — X— CO— ⁇ — ⁇ is carried out in a homogeneous reaction system in which water and an organic solvent compatible with water are mixed. Tetrahydrofuran is preferred as the organic compatible with water.
- any known compound may be used, and a carboxyl activator or a condensing agent is preferably used.
- Carboxyl activators include N-hydroxysuccinimide, p-nitrophenol, N-hydroxybenzotriazol, N-hydroxypiperidine, 2,4,5-triclonal phenol, N, N-dimethylamino Examples include pyridine.
- the condensing agent 1-ethyl-1-3-dimethyldimethylpropyl carbonate And its hydrochloride, diisopropyl carpositimide, dicyclohexyl carpositimide, N-hydroxy-1,5-norbornene-1,3-dicarboximide and the like.
- N-hydroxybenzotriazole is used as a carboxy activator
- 1-ethyl-1-3-dimethylaminopropyl salt is used as a condensing agent.
- the reaction temperature is preferably 0 to 60. In order to suppress by-products, it is more preferable to carry out the reaction at 0 to 10.
- the reaction environment is sexually weak, and more preferably pH 6-7.
- the hydrogel of the present invention is a hard-mouthed gel formed by containing the cellulose derivative of the present invention: key, and has a chemical structure represented by the formula (1) with respect to 100 parts by weight of water.
- Hyde mouth gel containing 0.05 to 3.0 parts by weight of cellulose as a repeating unit, preferably 0.3 to 2.0 parts by weight, and more preferably 0.3 to 1.0 parts by weight. is there.
- the hydrogels of the present invention has a viscoelasticity that does not flow down even when the container containing the gel is tilted. It can be easily deformed when touched with a spatula or other metal spatula. It can be easily applied to the skin and can be injected with a device having a thin tube such as a syringe.
- the viscoelasticity of the hide-mouthed gel of the present invention can be adjusted by changing the content of the cellulose-induced difficulty of the present invention with respect to water, so that it can be tailored to the purpose of use.
- the hide-mouthed gel of the present invention is non-feature, and it is capable of detecting when foreign matter such as dust is mixed in the process, and has an advantage in industrial production.
- the hide-opening gel of the present invention is diluted with water, the gel absorbs water and the gel wrinkles become larger as the hydraulic power S increases. Further diluting with water will eventually solubilize in water, lose the properties of the gel, and become an aqueous solution.
- the complex elastic modulus of the cellulose derivative according to the present invention is preferably 0.5% by weight in water. 3 With the conditions of 7 and using a dynamic viscoelasticity measuring device (Rheome), the angle 3 ⁇ 43 ⁇ 4 1 0 f A power of 50 to 90 ONZm 2 when measured at ad / sec is preferable, and a power of 100 to 70 ON / m 2 is more preferable.
- the complex modulus is a constant that represents the ratio of the stress and strain of the elastic body.
- the cellulose derivative of the present invention and its hide mouth gel can be used for medical applications including medical materials, daily necessities such as hair care products and skin moisturizers, and cosmetic applications.
- the Hyde Mouth Gel of the present invention can be used for low fi «medical applications because it can be 3 ⁇ 4 ⁇ through a syringe, and particularly retains humoral factors such as cell carriers and growth factors for regenerative medicine.
- ⁇ Sustained release carrier, low molecular weight compounds that can be used as pharmaceuticals ⁇ Sustained release carrier, anti-adhesion materials can be preferably used as medical materials such as sialants.
- it is preferably used for cell culture carriers, microorganism culture carriers, dental implant materials, and the like.
- a molded product obtained by culturing cells and a complex of the cells can be preferably used for sensing purposes such as cell chips.
- the cellulose derivative and its hydrogel of the present invention can be sterilized by any known sterilization method.
- Sterilization methods preferably used are electron beam irradiation, gas sterilization with ethylene oxide, high-pressure steam sterilization, and the like.
- Oleyl alcohol polyethylene glycol ether H— (0-CH 2 CH 2 ) 7 -0- C 18 H 35 , Wakuyaku Co., Ltd. M
- 1 mmol against N-butyloxycarbonylglycine Boc-Gl y-OH, Sumitomo Pharma Co., Ltd. ⁇
- the reaction solution was filtered to remove the by-product dioxygen hexylurea, concentrated and dried, and the amino group protected intermediate (Boc-NH-CH 2 -CO 1 (0-CH 2 CH 2 ) 7 — O—C 18 H 35 ) was obtained.
- To this intermediate was added about 1 to 2 ml of trifluoroacetic acid (Wakudoku Co., Ltd. M), and a de-Boc reaction by iri was performed at room temperature for 2 hours. The progress of the reaction was confirmed by TLC.
- the reaction solution was concentrated under reduced pressure to remove the reverse trifluoroacetic acid to obtain the target compound, trifluoroacetate of the amine compound.
- the product was confirmed by ⁇ -NMR.
- CMC—Na carboxymethylcellulose
- EDC (1-Ethyl-1-3- [3- (Dimethylamino) propyl] carbopositimide-HC 1, manufactured by Wago Yakuhin Kogyo Co., Ltd., and HOB t ⁇ ⁇ 2 0 (1-hydroxybenzotriazol '17 ⁇ , Waku Kogyo Co., Ltd.
- the cellulose-derived Omg obtained in Example 2 was dissolved in 199 Omg of ion-exchanged water to prepare a hyde mouth gel having a concentration of 0.5% by weight.
- the resulting Hyde Mouth Gel is beta-free and the container is tilted. It was a hydrogel that could be easily inserted through a 25 G needle, with a spatula or other metal spatula inserted easily.
- the complex elastic modulus of the obtained hide-mouthed gel was measured and found to be 177 N / m 2 .
- the complex modulus of Hyde Mouth Gel is measured by Rheometer RFIII (TA
- An intraperitoneal adhesion model was made using Sprague—Dawley (SD) rats (10 rats) from Nippon Chiarus-Ribaichi Co., Ltd. according to the method of Bucke dish aier CC 3rd et al.
- Example 2 1 Omg of the cellulose derivative obtained in Example 2 was dissolved in 99 Omg of distilled water for injection at the site where the abdominal wall was missing, and Hyde Mouth Gel (1 ml) prepared at a concentration of 1.0% by weight was applied. After the muscle layers of the incision were joined, the skin was joined in 4-5 slant boxes. The wound was disinfected with isodine disinfectant and returned to the cage. Four weeks after the model was prepared, the animals were laparotomized under pentobarbi anesthesia and anatomical anesthesia, and the degree of intraperitoneal adhesion was visually evaluated and scored according to the criteria shown below.
- Score 1 A state of weak adhesion that can be broken by mild traction
- the adhesion score and strength were 0.8 ⁇ 1.3 and 1 2 2. 6 ⁇ 2 0 3.5 gf, respectively (mean soil standard deviation).
- Example 4 As a control, the same operation as in Example 4 was carried out without applying a hide mouth gel, and the degree of adhesion and strength were evaluated. As a result, the adhesion score and strength were 1.4 ⁇ 1.5 and 3 3 1.2 ⁇ 3 6 4.9 gf, respectively (average score «difference). As described above, after 4 weeks, a strong adhesion occurred in a ratio, whereas in Example 4, the degree and strength of adhesion were remarkably suppressed. From this, it is recognized that the cellulose-derived gel obtained in Example 2 has the effect of remarkably suppressing adhesion in vivo, and can effectively prevent post-adhesion adhesion. Powerful. Industrial applicability
- the cellulose derivative of the present invention forms a hyde mouth gel having high viscoelasticity, it becomes possible to remain in a specific part of the body, so that the wound is protected and the physical separation between ⁇ is reduced. Used to form a key.
- a local drug delivery system can be realized by impregnating the drug in the hide-mouthed gel of the present invention.
- the hide-mouthed gel of the present invention has a property that either or when it is injected into a living body, it can be preferably used as a scaffold material for regenerative medicine.
- it can be used for daily products such as hair care products and skin moisturizers, and cosmetics. Furthermore, it is also used for cell culture carriers, microorganism culture carriers, and implant materials for Fantasy A composite of a molded product obtained by culturing cells and cells is also used for applications such as sensing such as cell chips.
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Abstract
Description
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Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/808,613 US8709450B2 (en) | 2007-12-17 | 2008-12-17 | Cellulose derivative and hydrogel thereof |
AU2008339362A AU2008339362B2 (en) | 2007-12-17 | 2008-12-17 | Cellulose derivative and hydrogel thereof |
JP2009546306A JP5204786B2 (ja) | 2007-12-17 | 2008-12-17 | セルロース誘導体およびそのハイドロゲル |
CA2707786A CA2707786A1 (en) | 2007-12-17 | 2008-12-17 | Cellulose derivative and hydrogel thereof |
CN2008801209750A CN101903407B (zh) | 2007-12-17 | 2008-12-17 | 纤维素衍生物及其水凝胶 |
EP08860912.8A EP2236522A4 (en) | 2007-12-17 | 2008-12-17 | CELLULOSE DERIVATIVE AND HYDROGEL THEREOF |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP2007-324570 | 2007-12-17 | ||
JP2007324570 | 2007-12-17 | ||
JP2008047753 | 2008-02-28 | ||
JP2008-047753 | 2008-02-28 |
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WO2009078492A1 true WO2009078492A1 (ja) | 2009-06-25 |
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PCT/JP2008/073500 WO2009078492A1 (ja) | 2007-12-17 | 2008-12-17 | セルロース誘導体およびそのハイドロゲル |
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US (1) | US8709450B2 (ja) |
EP (1) | EP2236522A4 (ja) |
JP (1) | JP5204786B2 (ja) |
KR (1) | KR20100093086A (ja) |
CN (1) | CN101903407B (ja) |
AU (1) | AU2008339362B2 (ja) |
CA (1) | CA2707786A1 (ja) |
WO (1) | WO2009078492A1 (ja) |
Cited By (5)
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WO2013099770A1 (ja) * | 2011-12-28 | 2013-07-04 | 花王株式会社 | ポリエステル樹脂組成物 |
JP2013151661A (ja) * | 2011-12-28 | 2013-08-08 | Kao Corp | ポリエステル樹脂組成物からなる成形体 |
US8871922B2 (en) | 2009-03-20 | 2014-10-28 | Fpinnovations | Cellulose materials with novel properties |
WO2018008700A1 (ja) * | 2016-07-07 | 2018-01-11 | 日本製紙株式会社 | 変性セルロースナノファイバーおよびこれを含むゴム組成物 |
US9962469B2 (en) | 2014-02-05 | 2018-05-08 | University Of Tsukuba | Adhesion-preventing preparation comprising composition comprising polycationic triblock copolymer and polyanionic polymer |
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JP6885611B2 (ja) | 2015-12-18 | 2021-06-16 | ユニバーシティ オブ カンタベリー | 分離媒体 |
US10590257B2 (en) | 2016-09-26 | 2020-03-17 | The Board Of Trustees Of The Leland Stanford Junior University | Biomimetic, moldable, self-assembled cellulose silica-based trimeric hydrogels and their use as viscosity modifying carriers in industrial applications |
US11969526B2 (en) | 2017-04-03 | 2024-04-30 | The Board Of Trustees Of The Leland Stanford Junior University | Adhesion prevention with shear-thinning polymeric hydrogels |
JP2020526618A (ja) * | 2017-07-07 | 2020-08-31 | ビーエーエスエフ ソシエタス・ヨーロピアBasf Se | アルコキシル化エステルアミンおよびその塩 |
US11975123B2 (en) | 2018-04-02 | 2024-05-07 | The Board Of Trustees Of The Leland Stanford Junior University | Adhesion prevention with shear-thinning polymeric hydrogels |
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- 2008-12-17 US US12/808,613 patent/US8709450B2/en not_active Expired - Fee Related
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- 2008-12-17 KR KR1020107013247A patent/KR20100093086A/ko not_active Application Discontinuation
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US10093798B2 (en) | 2011-12-28 | 2018-10-09 | Kao Corporation | Polyester resin composition |
US9962469B2 (en) | 2014-02-05 | 2018-05-08 | University Of Tsukuba | Adhesion-preventing preparation comprising composition comprising polycationic triblock copolymer and polyanionic polymer |
WO2018008700A1 (ja) * | 2016-07-07 | 2018-01-11 | 日本製紙株式会社 | 変性セルロースナノファイバーおよびこれを含むゴム組成物 |
JP6276489B1 (ja) * | 2016-07-07 | 2018-02-07 | 日本製紙株式会社 | 変性セルロースナノファイバーおよびこれを含むゴム組成物 |
US11261302B2 (en) | 2016-07-07 | 2022-03-01 | Nippon Paper Industries Co., Ltd. | Modified cellulose nanofiber and rubber composition including the same |
Also Published As
Publication number | Publication date |
---|---|
US8709450B2 (en) | 2014-04-29 |
CN101903407A (zh) | 2010-12-01 |
JP5204786B2 (ja) | 2013-06-05 |
CA2707786A1 (en) | 2009-06-25 |
KR20100093086A (ko) | 2010-08-24 |
AU2008339362B2 (en) | 2013-01-10 |
AU2008339362A1 (en) | 2009-06-25 |
EP2236522A1 (en) | 2010-10-06 |
EP2236522A4 (en) | 2013-04-17 |
US20110129505A1 (en) | 2011-06-02 |
JPWO2009078492A1 (ja) | 2011-05-06 |
CN101903407B (zh) | 2012-07-11 |
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