摘要:
A peptide has any one of the sequences SEQ ID NO.1 to SEQ ID NO.8, or has a sequence derived from any one of the sequences SEQ ID NO.1 to SEQ ID NO.8 by substitution, deletion or addition of one or several amino acids therein and having an osteogenetic activity.
摘要翻译:肽具有SEQ ID NO.1至SEQ ID NO.8中的任一个,或具有通过取代,缺失或添加一个序列SEQ ID NO.1至SEQ ID NO.8中任一个序列的序列 或其中的几个氨基酸并具有成骨活性。
摘要:
A peptide has any one of the sequences SEQ ID NO.1 to SEQ ID NO.8, or has a sequence derived from any one of the sequences SEQ ID NO.1 to SEQ ID NO.8 by substitution, deletion or addition of one or several amino acids therein and having an osteogenetic activity.
摘要:
Provided is a medical material useful for wound dressings or a drug delivery system, which material is safe and has high healing effects, more specifically, which is free from cytotoxicity or other side effects caused by a drug and permits the selective healing of the diseased site in a small dosage without damaging the sites other than the diseased site.The medical material so provided is a polymer gel having a sequence represented by the formula: A-Sp1-E-Sp2-G wherein A represents a water-swelling polymer gel, Sp1 represents the first spacer, E represents a cleavable group with the main chain to be cleaved via an enzymatic reaction, Sp2 represents the second spacer and G represents a drug. When the polymer gel is used, the cleavable group (E) is cleaved according to an amount of an enzyme existing at the diseased site to release the drug in accordance with the amount of the enzyme.
摘要:
A medical polymer gel produced by immobilizing a drug onto a water swelling polymer gel through a cleavable group with the main chain to be cleaved via an enzymatic reaction and a spacer, and a water swelling polymer gel produced by covalently crosslinking a polysaccharide having a carboxyl group within the molecule with a diaminoalkane derivative as the crosslinking reagent. Because the medical polymer gel exerts a drug releasing property depending on the level of an enzyme, the gel can release a therapeutically effective dose of a drug only at a focal lesion generating the enzyme. The medical polymer gel is useful as the structural component of wound dressings, adhesives for biological tissues, adhesion preventing agents, bone reinforcing agents, and drug releasing base materials. Wound dressings comprising the structural material of the water swelling polymer gel of the present invention, can be applied to a patient with wound, burn, and decubitus to promote the healing of the wounds of the patient.
摘要:
A peptide component (A) represented by the following formula (1a) with a peptide component (B) represented by the following formula (2a) and a compound (C) represented by the following formula (3a), as an optional component are subjected to a condensation reaction in the presence of a dehydrating and condensing agent and a condensing auxiliary; provided that in the case where “X” represents HOOC—(CH2)m—CO— in the formula (1a) and/or (2a), the reaction is conducted with the compound (C). The ratio of the peptide component (A) relative to the peptide component (B) is 100/0 to 30/70 (mol %), and the ratio of the compound (C) relative to the total molar amount of the peptide component (A) and/or the peptide component (B). X-(Pro-Y-Gly)n-OH (1a), X—(Z)r—OH (2a), H2N—R—NH2 (3a) Wherein “X” represents H or the group HOOC—(CH2)m—CO— (“m”=1 to 18), “Y” represents Pro or Hyp, “n”=1 to 20, “Z” represents a peptide chain comprising 1 to 10 amino acid residue(s), “r”=1 to 20, and “R” represents a linear or branched alkylene group. The present invention provides a collagenous polypeptide which is free from a risk of an infection by a pathogenic organism (or a causative factor) or an undesirable side effect, and which has a high safety.
摘要:
The present invention provides a hemostatic material which is excellent in hemostatic property, biodegradability and bioabsorbability, uniformity and stability of the quality, as well as reduces a risk of contamination with a pathogenic organism derived from an animal. The hemostatic material comprises a thrombin and a synthetic polypeptide capable of forming a triple helical structure. The polypeptide may show a peak of the molecular weight in the range from 5×104 to 100×104 in the molecular weight distribution. The polypeptide may contain at least a peptide unit represented by the formula: -Pro-X-Gly- (in the formula, X represents Pro or Hyp). The thrombin may be a recombinant. In the hemostatic material, the proportion of the thrombin may be about 0.1 to 500 units (U) relative to 1 mg of the polypeptide. The hemostatic material may further comprise a binder component having biodegradability and bioabsorbability. The hemostatic material may be formed on a substrate.
摘要:
A water swelling polymer gel produced by covalently crosslinking a polysaccharide having a carboxyl group within the molecule with a diaminoalkane derivative as the crosslinking reagent. The medical polymer gel is useful as the structural component of wound dressings, adhesives for biological tissues, adhesion preventing agents, bone reinforcing agents, and drug releasing base materials. Wound dressings comprising the structural material of the water swelling polymer gel of the present invention, can be applied to a patient with wound, burn, and decubitus to promote the healing of the wounds of the patient.
摘要:
Peptides having high binding activity for human interleukin-1 and represented by the following formulaH-X.sup.1 -Cys-A-B-A-B-A-Ser-X.sup.2 -Ywherein each A represents an amino acid residue selected from the group consisting of Val, Leu, Ile and Nle, independent of any other selection for A; B represents an amino acid residue selected from the group consisting of Arg, Lys, Gln, His and Ser, independent of any other selection for B; X.sup.1 and X.sup.2 each is a single bond or a peptide segment comprising 1-10 amino acid residues selected from Gly, Ala, Val, Arg, Asn, Ser, Phe, Pro, Leu, Glu, Asp, Lys, Thr, His, Tyr, Nle and Ile and Y represents a hydroxyl group or an amino group; and their salts.
摘要:
There is disclosed an adsorbent, comprising a carrier on which is immobilized a peptide possessing an ability to bind to the human antibody to the nicotinic acetylcholine receptor and represented by the formula:H--X--A--Y--Zwherein A stands for a peptide residue, one of X and Y stands for a single bond, an amino acid residue selected from the class consisting of Asp, Glu, Lys and a divalent group represented by the formula, ##STR1## (wherein n stands for an integer in the range of 1 to 17), or a peptide residue formed by peptide linkage of two to ten amino acid residues of at least one species selected from the class mentioned above and the other of X and Y stands for an amino acid residue selected from the class consisting of Asp, Glu, Lys and a divalent group represented by the formula, ##STR2## (wherein n stands for an integer in the range of 1 to 17), or a peptide residue formed by peptide linkage of two to ten amino acid residues of at least one species selected from the class mentioned above and Z stands for a hydroxyl group or an amino group. A method for the production of the adsorbent and a method for the use of the adsorbent are also disclosed.