摘要:
The present invention is directed to a method for removing cytokines and/or pathogens from blood or blood serum (blood) by contacting the blood with a solid, essentially non micro-porous substrate which has been surface treated with heparin, heparan sulfate and/or other molecules or chemical groups (the adsorbent media or media) having a binding affinity for the cytokine or pathogen(s) to be removed (the adsorbates), and wherein the size of the interstitial channels within said media is balanced with the amount of media surface area and the surface concentration of binding sites on the media in order to provide adequate adsorptive capacity while also allowing relatively high flow rates of blood through the adsorbent media.
摘要:
The present invention relates to a device for extracorporeal removal of harmful agents from blood or blood components, comprising full length heparin immobilized on a solid substrate by covalent end point attachment. The present invention also relates to a method for extracorporeal removal of a harmful agent from mammalian blood or blood components. The present invention further relates to a process for covalent end point attachment of full length heparin to a solid substrate.
摘要:
A composition is provided, which is capable of generating hard tissue when introduced in a mammalian subject and comprises a) an ionic complex of i) chitosan and ii) a negatively charged polysaccharide selected from the group consisting of heparin, heparan sulfate and dextran sulfate, and b) a hard tissue generating growth factor, said ionic complex being a carrier for said hard tissue generating growth factor.Also provided are a method of preparation in vitro of a bone graft substitute using the composition, a kit for carrying out the method, as well as use of the composition in the preparation of a medical device for generation of hard tissue in a mammalian subject in need thereof, and a method of generation of hard tissue at a desired site in a mammalian subject in need thereof.
摘要:
A process for coating of an intraocular lens to impart tissue compatibility thereto, comprising the steps: a) priming said lens using a solution of a polyamine; b) coating the lens treated in step a) above with a solution of a periodate-oxidized polysaccharide selected from heparin, heparain sulphate, and chondroitin sulphate to stabilize said polyamine by covalent and/or ionical cross-linking; c) coating the lens treated in step b) above with a solution of a polyamine; and d) coating the lens treated according to step c) above with a solution of a periodate-oxidized polysaccharide selected from heparin, heparain sulphate, and chondroitin sulphate in the presence of a cyanoborohydride to convert formed labile Schiff's bases to stable secondary amines.
摘要:
A solid substrate, the surface of which has been modified to introduce reactive groups of a hydrophilic nature thereon, the modification being provided by a primer comprising a first polysaccharide containing as reactive groups amino and hydroxyl groups; and a process for the preparation of such solid substrate.
摘要:
A process to produce by covalent binding conjugates of a substance containing a 2-amino-2-deoxyglycopyranosyl residue the NH.sub.2 -function of which in its most stable conformation is equatorially oriented, and a substrate containing a primary amino group. This is done by subjecting the substrate to degradation by diazotation to form a substance fragment having a free terminal aldehyde group, said fragment through its aldehydo group being reacted with the amino group of the substrate to form a Schiffs base which is then by reduction converted to a secondary amine.The substance is preferably selected from oligo and polysaccharides containing glucosamine or galactose amine units. The substrate is suitably selected from surface-aminated plastic objects, aminated gels and proteins.The conjugate described consists of an 1-deoxy-2,5-anhydrohexitol unit which constitutes terminal unit in an oligo or polysaccharide and which in 1-position is covalently bound to an amino group associated with a substrate.
摘要:
A composition having an ionic complex of chitosan and a negatively charged polysaccharide, selected from the group consisting of heparin, heparan sulfate and dextran sulfate, for use in the treatment of mucositis in a mammalian subject, to a method of preventing or treating mucositis in a mammalian subject, by applying topically a composition having an ionic complex of chitosan and a negatively charged polysaccharide, selected from the group consisting of heparin, heparan sulfate and dextran sulfate. The composition further relates to a pharmaceutical composition for topical administration of an ionic complex of chitosan and heparin.
摘要:
The present invention relates to a method for extracorporeal removal of a pathogenic microbe, an inflammatory cell or an inflammatory protein from mammalian blood/use of a device comprising a carbohydrate immobilized on a solid substrate, said carbohydrate having a binding affinity for a pathogenic microbe, an inflammatory cell or an inflammatory protein, for extracorporeal removal of said pathogenic microbe, inflammatory cell or inflammatory protein from mammalian blood/use of a carbohydrate having a binding affinity for a pathogenic microbe, an inflammatory cell or an inflammatory protein, wherein said carbohydrate is immobilized on a solid substrate, in the preparation of a device for treatment of a condition caused or aggravated by said pathogenic microbe, inflammatory cell or inflammatory protein/and a method for treatment of a mammalian subject suffering from a condition caused or aggravated by a pathogenic microbe, an inflammatory cell or an inflammatory protein.
摘要:
Oral hygiene composition containing in combination chitosan and a sulphated, negatively charged polysaccharide in a biologically active amount; a process of improving oral hygiene in a mammal including man; and use of chitosan in combination with a sulphated, negatively charged polysaccharide for the manufacture of dentally active oral hygiene compositions.