37 results about "Chondroitin sulphate" patented technology

The invention provides a method of promoting neuronal plasticity in the CNS of a mammal, the method comprising administering to the CNS of the mammal an agent that reduces the inhibitory properties of chondroitin sulphate proteoglycans. Preferred agents are chondroitinases and sulfatases, e.g., chondroitinase ABC. Also provided are methods of identifying further agents.

The present invention relates to an injectable bone regeneration material containing a bone formation enhancing peptide, and more particularly, to an injectable bone regeneration material, in which a bone formation enhancing peptide essentially containing one and more amino acid sequences among SEQ ID NO: 1 to SEQ ID NO: 28 is bonded or mixed to a gel-forming base material selected from the group consisting of chitosan, alginic acid, silk fibroin, propylene glycol, propylene glycol alginic acid, poloxamer, chondroitin sulphate, and the combination thereof. The injectable bone regeneration material according to the present invention can increase differentiation of bone marrow stromal cells and osteoblasts into bone tissue, thus maximizing tissue regeneration by a peptide capable of promoting differentiation of bone tissue and periodontal tissue regeneration. The injectable bone regeneration material is in the form of a gel, and thus can be applied to a surface of various medical devices such as implant etc., and can be mixed with bone graft particles to apply, so that it can increase a treatment effect of existing medical devices to maximize a tissue regeneration effect.

The invention relates to composition comprising a dextran-tyramine conjugate and a conjugate selected from the group consisting of chondroitin sulphate-tyramine, collagen-tyramine, chitosan-tyramine, chitosan-phloretic acid, gelatine-tyramine, heparan sulphate-tyramine, keratin sulphate-tyramine, hyaluronic acid-tyramine and heparin-tyramine.

The invention discloses cartilage deficiency prosthesis, a preparation method thereof and an integrated cartilage-bone repair material. The prosthesis is composed of collagen and proteoglycan based on the mass ratio of 1/3-3, wherein, the collagen is I-type collagen or II-type collagen, and the proteoglycan comprises glycosaminoglycan, chitosan or chondroitin sulfate; and natural cartilage matrixes are longitudinally arranged in the prosthesis. The integrated cartilage-bone repair material is made by compounding the prosthesis with a bone matrix material together. The cartilage defect prosthesis of an articular cartilage matrix structure of the invention can meet the repair need of articular cartilage deficiency, effectively improve repair rate of articular cartilage injury and lower disability incidence of a patient.

Compositions and methods are provided for promoting elastin fiber formation (elastogenesis) in a cell, including methods that comprise contacting a cell that is capable of elastogenesis with (i) a mutated biglycan polypeptide that lacks chondroitin sulphate proteoglycan chains, (ii) a versican V3 isoform polypeptide that lacks most or all of the polypeptide regions encoded by one or more of exons 4, 5 or 6 or by exons 9-10 or 11-13, and/or with (iii) metastatin.

The invention relates to an implant or gel including at least one compound having magnetic functionality, which in turn includes a substrate of at least one enzyme involved in regenerating the extracellular matrix and a plurality of magnetic particles. The invention also relates to a compound having magnetic functionality which includes a substrate of at least one enzyme involved in regenerating the extracellular matrix and a plurality of magnetic particles, preferably with no coating or surface modification, or functionalised with carboxyl groups, for the production of an implant or gel for monitoring an enzyme activity involved in regenerating the extracellular matrix. The substrate is preferably selected from the group that comprises collagen, chondroitin sulphate and hyaluronic acid, and the magnetic particles are superparamagnetic particles.

The invention discloses corneal metaphase preserving liquid containing recombinant human serum albumin and a preparation method thereof. The corneal metaphase preserving liquid containing recombinanthuman serum albumin contains glutamine, calcium pantothenate, choline chloride, folic acid, inositol, nicotinamide, pyridoxal.HCl, riboflavin, thiamine.HCl, KCl, NaCl, NaH2PO4.2H2O, glucose, dextran 40, sodium pyruvate, vitamin C, chondroitin sulphate sodium, sodium hyaluronate, non-animal recombinant human serum albumin, gentamicin sulfate, sodium bicarbonate, piperazine-1-erhanesulfonic acid, phenol red indicator, and water for injection. The non-animal recombinant human serum albumin is added to replace serum to improve corneal endothelial cell survival rate; and then the non-animal recombinant human serum albumin cooperates with a compound system of the chondroitin sulphate sodium, the sodium hyaluronate and the dextran 40, the survival rate of the corneal endothelial cell is greatly ensured.

The invention provides a chondroitinase AC mutant and a preparation method thereof. The mutant has an amino acid sequence as shown in SEQ ID NO: 2. The invention provides an encoding gene of the chondroitinase AC mutant. The encoding gene has a nucleotide sequence shown as shown in SEQ ID NO: 3. The invention further provides a recombinant vector and engineering bacterium of the chondroitinase ACmutant. Meanwhile, the invention also discloses a preparation method of the chondroitinase AC mutant. The 170th site in the amino acid sequence SEQ ID NO: 1 of wild chondroitinase AC 1 is mutated intoglycine to construct the chondrosulphatase AC mutant, so that the steric hindrance of the combination of the chondrosulphatase AC mutant and a polysaccharide substrate is reduced, the combination pocket of the chondrosulphatase AC mutant and polysaccharide is enlarged, the chondrosulphatase AC mutant can be more easily combined with the polysaccharide substrate, and the activity of chondrosulphatase AC is improved.

The invention belongs to the technical field of traditional Chinese medicines, relates to a Chinese patent medicine for treating osteoarthritis and a preparation method thereof. The Chinese patent medicine is prepared from the following raw materials in parts by weight: 5-10 parts of chondroitin sulphate sodium, 5-10 parts of glucosamine, 5-10 parts of burdock, 5-10 parts of salviae miltiorrhiza, 2-5 parts of eucommia ulmoides, 2-5 parts of earthworm, 2-5 parts of parasitic loranthus, 2-5 parts of radix achyranthis bidentatae, 2-5 parts of radix angelicae pubescentis, 2-5 parts of asarum, 2-5 root of largeleaf gentian, 2-5 parts of divaricate saposhnikovia root, 2-5 parts of ligusticum wallichii, 2-5 parts of dipsacus root, 2-5 parts of centipede, 2-5 parts of gastrodia elata and 2-5 parts of liquorice. The preparation method comprises the following steps: weighing raw materials in parts by weight; crushing into fine powder, sieving through an 80-100mesh sieve, and enclosing 0.6-0.7g of powder into each hollow capsule; and bottling and sealing. The traditional Chinese medicine components disclosed by the invention are capable of assisting the functions of chondroitin sulphate sodium and glucosamine for repairing cartilago articularis when developing the efficacy of strengthening muscles and bones; and the components of the traditional Chinese medicine and the Western medicine work together to quickly treat the osteoarthritis.

Pharmaceutical compositions comprising of glycosaminoglycan or salts thereof, preferably chondroitin or salts thereof, more preferably chondroitin sulphate, and nonsteroidal anti-inflammatory drug(s) or salts thereof, optionally with pharmaceutically acceptable excipient(s) are described. The compositions of the present invention provide gastrosparing effect in conditions where nonsteroidal anti-inflammatory drug(s) or their salts are used, particularly in mammals. Also provided are process for the manufacture of such novel compositions and method to minimize the nonsteroidal anti-inflammatory drug(s) induced gastric toxicity.

The invention provides a combined porcine transmissible gastroenteritis and porcine epizootic diarrhea living vaccine cryoprotectant and a combined living vaccine. The cryoprotectant is prepared fromthe following components in percentage by mass volume: 20-28 percent of cane sugar, 6-10 percent of gelatin, 2-6 percent of tryptone, 1-3 percent of yeast extract powder, 0.1-2 percent of chondroitinsulfate, 1-5 percent of inositol and the balance being injection water, based on the unit of mass volume ratio being g/ml. The combined living vaccine comprises the cryoprotectant, the cryoprotectantcan effectively solve the problem that the surface of an existing lyophilized product has pits and cracks, and the lyophilized product has low dissolving speed and titer loss after lyophilization.

The present invention relates to treatment of neuronal injury. The present invention discloses a novel use of an agent and a novel method for promoting neurite out growth and/or neural regeneration in CNS injuries. A novel mechanism of promoting neurite outgrowth by increasing the interaction of chondroitin sulphate proteoglycan (CSPG) to receptor protein tyrosine phosphatase sigma (RPTPσ) is disclosed.

The invention provides an oyster mushroom soy sauce. The oyster mushroom soy sauce is characterized by being prepared from the following raw materials and additives in parts by weight: 200 to 300 parts of soy sauce, 18 to 30 parts of oyster mushroom, 20 to 40 parts of radix astragali seu hedysari, 18 to 25 parts of salvia miltiorrhiza, 10 to 20 parts of dark plum, 12 to 20 parts of liquorice root, and 6 to 15 parts of additive, wherein the additive comprises the following components in parts by weight: 1 to 4 parts of 2-ethyl-3,5-dimethylpyrazine, 2 to 4 parts of sodium alginate, and 3 to 7 parts of chondroitin sulphate sodium. The oyster mushroom soy sauce has the advantage that after placing, the contents of amino acid and acetic ether are higher.

The invention relates to a composition for repairing epithelial injury of bladders and urinary tracts. The composition is composed of two or three components selected from a group including hyaluronic acid, chitosan and chondroitin sulphate. Clinical animal experiments show that the composition for repairing epithelial injury of bladders and urinary tracts disclosed by the invention is capable of obviously repairing epithelial injury of bladders due to protamine sulphate or cyclophosphamide, obviously reducing the bladder epithelial injury range and the injury degree and lightening the inflammatory infiltration degree.

The disclosure features compositions and methods that may be used to detect the presence of tumor cell-derived exosomes in a patient (e.g., a human patient) having cancer. The compositions and methods described herein may also be used to evaluate the patient's prognosis, as well as monitor the likelihood of the patient to benefit from therapy, such as immunotherapy. The disclosure also features antibodies that specifically bind chondroitin sulphate proteoglycan 4 (CSPG4), as well as antigen-antibody complexes containing the same.

The invention researches a treatment mechanism for using the CSPG4 (Chondroitin Sulphate Proteoglycan 4) as the molecular target of the immunotherapy in the treatment of the triple-negative breast cancer through the theoretical research and the experiments in vivo and vitro, provides an effective treatment of the triple-negative breast cancer, and simultaneously provides a theoretical basis for the application for using the CSPG4 (Chondroitin Sulphate Proteoglycan 4) as the antibody in the treatment of the triple-negative breast cancer.