554 results about "Glycosaminoglycan" patented technology

The present invention relates to the discovery that biocompatible anionic polymers can effectively inhibit fibrosis, scar formation, and surgical adhesions. The invention is predicated on the discovery that anionic polymers effectively inhibit invasion of cells associated with detrimental healing processes, and in particular, that the effectiveness of an anionic polymer at inhibiting cell invasion correlates with the anionic charge density of the polymer. Thus the present invention provides a large number of materials for use in methods of inhibiting fibrosis and fibroblast invasion. Anionic polymers for use in the invention include but are not limited to natural proteoglycans, and the glycosaminoglycan moieties of proteoglycans. Additionally, anionic carbohydrates and other anionic polymers may be used. The anionic polymers dextran sulfate and pentosan polysulfate are preferred. In a more preferred embodiment, dextran sulfate, in which the sulfur content is greater than about 10% by weight, may be used. In a more preferred embodiment, the average molecular weight is about 40,000 to 500,000 Daltons. The present invention provides compositions and methods to inhibit fibrosis and scarring associated with surgery. The invention further provides compositions and methods to inhibit glial cell invasion, detrimental bone growth and neurite outgrowth. In a preferred embodiment, the inhibitory compositions further comprise an adhesive protein.

The invention discloses oligomerization pineapple ginseng glycosaminoglycan (dTHG). The weight-average molecular weight of the glycosaminoglycan is 8,000-20,000Da, and monosaccharide constituents comprise acetylgalactosaminyl (GaLNAc), glucuronic acid (GLcUA), fucose (Fuc) or sulfuric ester thereof (expressed by -OSO3-), wherein the molar ratio of the GaLNAc to the GLcUA to the Fuc to the -OSO3- is about 1:(+ / -0.3):(1+ / -0.3):(3.5+ / -0.5). The dTHG is a powerful endogenous factor X enzyme inhibitor, has good anticoagulation and anti-thrombus activity and can be used for preventing and / or treating thrombotic diseases. The invention also provides a method for preparing the dTHG, comprising the following steps of: (1) extracting and obtaining fucose glycosaminoglycan (THG) from the walls of pineapple ginseng bodies; (2) adopting a peroxide method or a peroxide method under the catalysis of an ionic catalyst of transition metal of the fourth period to depolymerize the THF so as to obtain dTHG; and (3) removing low molecular and / or high molecular impurity constituents in the dTHG.

Partially desulphated glycosaminoglycan derivatives are described, particularly heparin, and more particularly a compound of formula (I) where the U, R and R1 groups have the meanings indicated in the description. These glycosaminoglycan derivatives have antiangiogenic and heparanase-inhibiting activity and are devoid of anticoagulant activity.