WO2007036084A1 - Greffon nerveux artificiel à usage médical contenant de la fibroïne de soie et procédé d’élaboration - Google Patents
Greffon nerveux artificiel à usage médical contenant de la fibroïne de soie et procédé d’élaboration Download PDFInfo
- Publication number
- WO2007036084A1 WO2007036084A1 PCT/CN2005/002423 CN2005002423W WO2007036084A1 WO 2007036084 A1 WO2007036084 A1 WO 2007036084A1 CN 2005002423 W CN2005002423 W CN 2005002423W WO 2007036084 A1 WO2007036084 A1 WO 2007036084A1
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- WIPO (PCT)
- Prior art keywords
- silk fibroin
- catheter
- fiber
- scaffold
- nerve graft
- Prior art date
Links
- 108010022355 Fibroins Proteins 0.000 title claims abstract description 75
- 210000005036 nerve Anatomy 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 239000000835 fiber Substances 0.000 claims abstract description 48
- 229920001661 Chitosan Polymers 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 17
- 229920000954 Polyglycolide Polymers 0.000 claims description 14
- 239000004633 polyglycolic acid Substances 0.000 claims description 14
- 229920002101 Chitin Polymers 0.000 claims description 11
- 239000004626 polylactic acid Substances 0.000 claims description 8
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 2
- 150000004676 glycans Chemical class 0.000 claims 1
- 208000028389 Nerve injury Diseases 0.000 abstract description 2
- 230000008764 nerve damage Effects 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 22
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 21
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 20
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 9
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 9
- 238000006640 acetylation reaction Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 230000008929 regeneration Effects 0.000 description 8
- 238000011069 regeneration method Methods 0.000 description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 6
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 5
- 230000021736 acetylation Effects 0.000 description 5
- 230000007547 defect Effects 0.000 description 5
- 239000012153 distilled water Substances 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000035484 reaction time Effects 0.000 description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 3
- 239000001110 calcium chloride Substances 0.000 description 3
- 229910001628 calcium chloride Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000004310 lactic acid Substances 0.000 description 3
- 235000014655 lactic acid Nutrition 0.000 description 3
- 108090000623 proteins and genes Proteins 0.000 description 3
- 102000004169 proteins and genes Human genes 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 210000001519 tissue Anatomy 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 210000002569 neuron Anatomy 0.000 description 2
- 210000000578 peripheral nerve Anatomy 0.000 description 2
- 239000008363 phosphate buffer Substances 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 238000002054 transplantation Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 241000282412 Homo Species 0.000 description 1
- 108010025020 Nerve Growth Factor Proteins 0.000 description 1
- 102000015336 Nerve Growth Factor Human genes 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 210000000467 autonomic pathway Anatomy 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000002638 denervation Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000013332 literature search Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 229940053128 nerve growth factor Drugs 0.000 description 1
- 210000000944 nerve tissue Anatomy 0.000 description 1
- 230000000926 neurological effect Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 210000003497 sciatic nerve Anatomy 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
- 238000002166 wet spinning Methods 0.000 description 1
Classifications
-
- 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
- A61L27/22—Polypeptides or derivatives thereof, e.g. degradation products
- A61L27/227—Other specific proteins or polypeptides not covered by A61L27/222, A61L27/225 or A61L27/24
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K35/00—Medicinal preparations containing materials or reaction products thereof with undetermined constitution
- A61K35/56—Materials from animals other than mammals
- A61K35/63—Arthropods
- A61K35/64—Insects, e.g. bees, wasps or fleas
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
- A61K38/01—Hydrolysed proteins; Derivatives thereof
- A61K38/012—Hydrolysed proteins; Derivatives thereof from animals
-
- 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
- A61L27/22—Polypeptides or derivatives thereof, e.g. degradation products
-
- 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
- A61L27/36—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix
- A61L27/3604—Materials for grafts or prostheses or for coating grafts or prostheses containing ingredients of undetermined constitution or reaction products thereof, e.g. transplant tissue, natural bone, extracellular matrix characterised by the human or animal origin of the biological material, e.g. hair, fascia, fish scales, silk, shellac, pericardium, pleura, renal tissue, amniotic membrane, parenchymal tissue, fetal tissue, muscle tissue, fat tissue, enamel
-
- 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
- A61L27/40—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material
-
- 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
- A61L27/40—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material
- A61L27/44—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material having a macromolecular matrix
- A61L27/48—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material having a macromolecular matrix with macromolecular fillers
-
- 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
- A61L31/005—Ingredients of undetermined constitution or reaction products thereof
-
- 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
- A61L31/043—Proteins; Polypeptides; Degradation products thereof
- A61L31/047—Other specific proteins or polypeptides not covered by A61L31/044 - A61L31/046
-
- 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
- A61L31/12—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material
- A61L31/125—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material having a macromolecular matrix
- A61L31/129—Composite materials, i.e. containing one material dispersed in a matrix of the same or different material having a macromolecular matrix containing macromolecular fillers
-
- 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
- A61L2430/00—Materials or treatment for tissue regeneration
- A61L2430/32—Materials or treatment for tissue regeneration for nerve reconstruction
Definitions
- the invention relates to a method for preparing a medical nerve graft for bridging a defect nerve. Background technique
- peripheral nerve defects due to trauma (or surgery) are more common, but long-distance nerve defects cannot rely on end-to-end sutures to compensate for nerve loss, and they have to rely on grafts for bridging repair.
- grafts for bridging repair.
- the problem of finding and developing a suitable graft has been more than one hundred years old, in addition to the autonomic nerve becoming the preferred nerve defect bridge graft, it has not yet been found in humans, and it has been recognized and A neurograft substitute that is widely used clinically.
- autologous nerve transplantation it is not widely used clinically because of limited neurological sources for transplantation, difficulty in matching tissue structure and size, and long-term denervation of transplant donor sites.
- biodegradable materials that have been tried for peripheral nerve tissue engineering are usually high molecular polymers, including more than a dozen of their copolymers and derivatives; including polyglycolic acid (PGA), poly Lactic acid (PLA), chitosan, gelatin, silica gel and other materials (such as Chinese patent CN1126515C, etc.), but in practice, they also have their own different shortcomings.
- PGA polyglycolic acid
- PLA poly Lactic acid
- chitosan chitosan
- gelatin such as Chinese patent CN1126515C, etc.
- the object of the present invention is to provide a silk fibroin-containing medical nerve graft which has good use effect, good biocompatibility with human body and excellent biodegradability and a preparation method thereof.
- a medical nerve graft containing silk fibroin consisting of a catheter or a catheter and a fibrous stent, characterized in that at least one of the catheter and the fibrous stent contains silk fibroin component.
- the catheter consists of silk fibroin components.
- the catheter also contains a chitosan component.
- Fiber stent It is a silk fibroin fiber.
- a method for preparing a medical nerve graft containing silk fibroin which comprises the following steps: preparing silk fibroin fiber by silk;
- the silk fibroin fiber is prepared into a catheter containing silk fibroin.
- step 2 a chitosan component is further added, and the prepared silk fibroin-containing catheter further contains a chitosan component.
- the resulting catheter is also combined with a fiber scaffold that inserts the fiber scaffold into a catheter containing silk fibroin.
- the fiber scaffold is a silk fibroin fiber.
- a method for preparing a medical nerve graft containing silk fibroin comprising the following steps:
- the silk is made into silk fibroin fiber, and the silk fibroin fiber scaffold is obtained;
- Silk fibroin consists of 18 kinds of amino acids. It has been shown by our experimental research to have good bio-affinity. It is non-toxic, non-polluting and biodegradable. The artificial nerve grafts obtained have good effects. According to literature search, at home and abroad, artificial nerve transfer plants have been found to treat nerve damage with silk fibroin.
- the material used in the product of the present invention is high-purity silk fibroin, which is a natural degradable material and has good biocompatibility with the human body.
- the resulting product does not contain exogenous toxic or side-effect substances brought about by the preparation process.
- the wall of the catheter tube is rich in microporous three-dimensional structure, which provides a necessary way for the nutrient transport required for the growth process of nerve cells, and the effect is good. It provides the necessary induction and necessary growth space for the growth of nerve cells.
- the dialyzed silk fibroin solution is injected into the mold, dried and then subjected to molding processing; and the preliminary formed silk fibroin catheter is placed in a 50:50 (V/V) methanol and sodium hydroxide (1 mol/L) solution. After a certain period of time (5 minutes to 2 hours), it was washed successively with sodium hydroxide (1 mol/L) solution, 50 mmol/L phosphate buffer and distilled water to obtain a silk fibroin catheter.
- a method for preparing a medical nerve graft containing a silk fibroin catheter comprising the following steps:
- Silk fibroin was obtained in the same manner as in Example 1.
- a silk fibroin catheter for nerve regeneration, or filling other substances inside it for nerve regeneration.
- the prepared silk fibroin catheter is embedded in other materials (such as polyglycolic acid (PGA), polylactic acid (PLA), chitosan, chitin) to obtain nerve scaffold for nerve regeneration.
- PGA polyglycolic acid
- PLA polylactic acid
- chitosan chitin
- the method for preparing fiber stents for polyglycolic acid (PGA), polylactic acid (PLA), and chitosan is the same as that of Chinese patent CN1126515C.
- the method for preparing the fiber scaffold by chitin is as follows: the chitosan is dissolved in a weak acid solution, and the weak acid is acetic acid (or phosphoric acid, citric acid, lactic acid) at a concentration of 2 to 15% (examples 2%, 8%, 15%). Then, the solution is processed into a chitosan fiber by a wet spinning process; the obtained chitosan fiber is placed in an alcohol solution of acetic anhydride to carry out an acetylation reaction, and the reaction temperature is 0 to 60 ⁇ (example 0 ° C, 30 °C, 60V, reaction time is 0.5 ⁇ 6 hours (for example, 0.5 hours, 2 hours, 4 hours, 6 hours).
- the concentration of acetic anhydride is 1 ⁇ 50% (example 1%, 20%) 40%, 50%), the alcohol solution is methanol (or ethanol).
- the alcohol solution is methanol (or ethanol).
- a method for preparing a medical nerve graft containing a silk fibroin catheter comprising the following steps:
- Chitosan is dissolved with a weak acid, acetic acid (or phosphoric acid, citric acid, lactic acid) at a concentration of 2 to 15% (eg 2%, 8%, 15%), and then the chitosan solution is applied to silk fibroin
- the solution is mixed in a certain weight ratio (example: 1: 2, 1: 1, 2: 1).
- the above mixture is injected into a mold and freeze-dried for molding; then the preliminary formed catheter is placed in a 50:50 (V/V) solution of methanol and sodium hydroxide (1 mol/L) for a certain period of time (5 minutes).
- the prepared silk fibroin-containing composite catheter is embedded in a fiber scaffold made of other materials (such as polyglycolic acid (PGA), polylactic acid (PLA), chitosan, chitin) for nerve regeneration.
- PGA polyglycolic acid
- PLA polylactic acid
- chitosan chitin
- a method for preparing a medical nerve graft containing a silk fibroin fiber scaffold comprises the following steps:
- Silk fibroin fibers i.e., fiber scaffolds
- the fiber scaffold of the silk fibroin obtained is embedded in a catheter made of other materials (polyglycolic acid (PGA), polylactic acid (PLA), chitosan, chitin) for nerve regeneration.
- PGA polyglycolic acid
- PLA polylactic acid
- chitosan chitin
- the method for producing a catheter made of polyglycolic acid (PGA), polylactic acid (PLA), and chitosan is the same as that of Chinese patent CN1126515C.
- the method for preparing the catheter by chitin is: dissolving chitosan with a weak acid, the weak acid is acetic acid (or phosphoric acid, citric acid, lactic acid) at a concentration of 2 to 15% (example 2%, 8%, 15%), and then the solution
- the alkaline coagulating solution is a solution containing 8 to 20% of sodium hydroxide (or 8 to 20% of potassium hydroxide or 8 to 20% of sodium carbonate, and may also contain Ethanol 5 ⁇ 30%)
- the catheter is washed with water to obtain a chitosan catheter; and the obtained chitosan catheter is placed in an alcohol solution of acetic anhydride for acetylation reaction at a reaction temperature of 0 to 60 ° C ( Examples: 0 ° C, 30 ° C, 60 V, reaction time is 0.5 to 6 hours (for example, 0.5 hours, 2 hours, 4 hours, 6 hours) (
- the concentration of acetic anhydride is 1 to 50% (example 1%) 20%, 40%, 50%), the alcohol solution is methanol (or ethanol).
- the acetylation reaction it was washed with water, and then placed in a lmol/L sodium hydroxide or potassium hydroxide solution for 24 hours, washed with water, and dried to obtain a chitin catheter.
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Animal Behavior & Ethology (AREA)
- Epidemiology (AREA)
- Engineering & Computer Science (AREA)
- Medicinal Chemistry (AREA)
- Transplantation (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dermatology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Surgery (AREA)
- Materials Engineering (AREA)
- Zoology (AREA)
- Composite Materials (AREA)
- Biomedical Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Pharmacology & Pharmacy (AREA)
- Insects & Arthropods (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Immunology (AREA)
- Molecular Biology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Urology & Nephrology (AREA)
- Botany (AREA)
- Gastroenterology & Hepatology (AREA)
- Cardiology (AREA)
- Pulmonology (AREA)
- Animal Husbandry (AREA)
- Materials For Medical Uses (AREA)
- Prostheses (AREA)
- Compounds Of Unknown Constitution (AREA)
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT05848160T ATE506027T1 (de) | 2005-09-28 | 2005-12-31 | Medizinisches künstliches nerventransplantat mit seiden-fibroin und sein herstellungsverfahren |
DE602005027620T DE602005027620D1 (de) | 2005-09-28 | 2005-12-31 | Eiden-fibroin und sein herstellungsverfahren |
JP2008532561A JP2009509594A (ja) | 2005-09-28 | 2005-12-31 | シルクフィブロイン含有医療用人工神経移植体及びその調製方法 |
EA200800925A EA016085B1 (ru) | 2005-09-28 | 2005-12-31 | Медицинский искусственный трансплантат ствола нерва, содержащий фиброин шелка, и способ его изготовления |
US12/088,167 US20080249639A1 (en) | 2005-09-28 | 2005-12-31 | Medical Artificial Nerve Graft Containing Silk Fibroin and Its Preparation Method |
AU2005336876A AU2005336876B2 (en) | 2005-09-28 | 2005-12-31 | Medical artificial nerve graft containing silk fibroin and its preparation method |
BRPI0520636-7A BRPI0520636A2 (pt) | 2005-09-28 | 2005-12-31 | enxerto de nervo artificial médico e método de preparação de um enxerto de nervo artificial médico |
EP05848160.7A EP1938774B2 (en) | 2005-09-28 | 2005-12-31 | Medical artificial nerve graft containing silk fibroin and its preparation method |
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CNB2005100946832A CN100382772C (zh) | 2005-09-28 | 2005-09-28 | 含蚕丝丝素的医用神经移植物的制备方法 |
CN200510094683.2 | 2005-09-28 |
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WO2007036084A1 true WO2007036084A1 (fr) | 2007-04-05 |
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PCT/CN2005/002423 WO2007036084A1 (fr) | 2005-09-28 | 2005-12-31 | Greffon nerveux artificiel à usage médical contenant de la fibroïne de soie et procédé d’élaboration |
Country Status (11)
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US (1) | US20080249639A1 (zh) |
EP (1) | EP1938774B2 (zh) |
JP (1) | JP2009509594A (zh) |
KR (1) | KR20080049095A (zh) |
CN (1) | CN100382772C (zh) |
AT (1) | ATE506027T1 (zh) |
AU (1) | AU2005336876B2 (zh) |
BR (1) | BRPI0520636A2 (zh) |
DE (1) | DE602005027620D1 (zh) |
EA (1) | EA016085B1 (zh) |
WO (1) | WO2007036084A1 (zh) |
Cited By (1)
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CN104225685A (zh) * | 2014-09-18 | 2014-12-24 | 东华大学 | 一种导电缓释型神经组织工程支架的制备方法 |
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DE102005042455A1 (de) * | 2005-09-06 | 2007-04-12 | Medizinische Hochschule Hannover | Nervenimplantat |
WO2008071226A1 (en) * | 2006-12-11 | 2008-06-19 | Medizinische Hochschule Hannover | Implant of cross-linked spider silk threads |
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KR101219646B1 (ko) * | 2010-10-19 | 2013-01-11 | 대한민국 | 아가로스를 이용한 다공성 3차원 지지체의 제조방법 및 이를 통해 제조된 다공성 3차원 지지체 |
WO2013152265A1 (en) * | 2012-04-06 | 2013-10-10 | Trustees Of Tufts College | Methods of producing and using silk microfibers |
EP2712955A1 (en) | 2012-09-27 | 2014-04-02 | Ludwig Boltzmann Gesellschaft GmbH | Product made of silk |
CN107411996A (zh) * | 2017-05-18 | 2017-12-01 | 鑫缘茧丝绸集团股份有限公司 | 一种含蚕丝丝素蛋白纤维的面膜 |
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CN114848906B (zh) * | 2021-04-02 | 2023-07-04 | 苏州大学 | 一种SF/SiO2复合材料 |
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- 2005-12-31 KR KR1020087008080A patent/KR20080049095A/ko not_active Application Discontinuation
- 2005-12-31 US US12/088,167 patent/US20080249639A1/en not_active Abandoned
- 2005-12-31 AT AT05848160T patent/ATE506027T1/de not_active IP Right Cessation
- 2005-12-31 DE DE602005027620T patent/DE602005027620D1/de active Active
- 2005-12-31 JP JP2008532561A patent/JP2009509594A/ja active Pending
- 2005-12-31 AU AU2005336876A patent/AU2005336876B2/en active Active
- 2005-12-31 EP EP05848160.7A patent/EP1938774B2/en active Active
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KR20080049095A (ko) | 2008-06-03 |
US20080249639A1 (en) | 2008-10-09 |
EA016085B1 (ru) | 2012-02-28 |
CN1742690A (zh) | 2006-03-08 |
BRPI0520636A2 (pt) | 2009-05-19 |
ATE506027T1 (de) | 2011-05-15 |
EA200800925A1 (ru) | 2008-10-30 |
DE602005027620D1 (de) | 2011-06-01 |
AU2005336876A1 (en) | 2007-04-05 |
CN100382772C (zh) | 2008-04-23 |
EP1938774A4 (en) | 2010-01-20 |
EP1938774A1 (en) | 2008-07-02 |
JP2009509594A (ja) | 2009-03-12 |
AU2005336876B2 (en) | 2012-09-06 |
EP1938774B1 (en) | 2011-04-20 |
EP1938774B2 (en) | 2014-05-21 |
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