uronic acid/hemorrhage

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Hemorrhagic shock activates mast cells in the rat stomach wall.

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The activation of mast cells (MC) and liberation of their mediators can play an essential role in initiating and controlling inflammatory processes in the wall of the gastrointestinal tract (GIT) due to ischemia. The role of MC in changes induced by hemorrhagic shock (HS) remains unknown. Heparin

Dependence of the C-6 sulfate of the glucosamine moiety and 1----4 glycosidic linkage of heparin disaccharides for production of hemorrhage: reversal of the antihemostatic activity of heparin and their fragments by adenosine triphosphate and myosin.

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Topical application or intraperitoneal injection of heparin and heparin oligosaccharides produces a potent inhibition of skin hemostasis. Studies conducted with disaccharides derived from heparin, heparan sulfate, and chondroitin sulfates have shown that delta-4,5-uronyl-(1----4)-glucosamine,

Structural features and bleeding activity of commercial low molecular weight heparins: neutralization by ATP and protamine.

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Differences in the structure of three low molecular weight heparins (LMWHs) have been observed by applying physico-chemical methods as well as enzymatic degradation with bacterial heparinase and heparitinase II. The production of enoxaparin maintains the internal structure of the parent heparin with

Structural composition and anticoagulant activity of dermatan sulfate from the skin of the electric eel, Electrophorus electricus (L.).

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We determined the disaccharide composition of dermatan sulfate (DS) purified from the skin of the electric eel Electrophorus electricus. DS obtained from the electric eel was composed of non-sulfated, mono-sulfated disaccharides bearing esterified sulfate groups at positions C-4 or C-6 of N-acetyl

[Platelet glycosaminoglycans in paraproteinemic hemoblastoses].

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The content and composition of platelet glycosaminoglycans (GAG) were studied in 24 patients with paraproteinemic hemoblastoses (22 patients with myelomic disease and 2 with Waldenstrom's disease). According to the GAG levels, the patients were divided into 2 groups: 1) 6 patients with its higher

[Connective tissue under emotional stress].

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The data pointing to morphofunctional changes in connective tissues of rats after exposure to acute experimental stress are presented. These changes were shown to be dependent on resistance of animals to emotional stress. Animals predisposed to the emotional stress developed more pronounced changes

Preliminary observations of chondral abrasion in a canine model.

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Articular cartilage repair was followed for one year in skeletally mature dogs after destabilisation by anterior cruciate ligament transection of the stifle joint (CT), abrasion of the inferior medial condyle (ABR) to bleeding bone, or anterior cruciate transection followed by chondral abrasion

Studies on the mechanism of action of cetraxate [4'-(2-carboxyethyl)phenyl trans-4-aminomethyl cyclohexanecarboxylate hydrochloride], a new anti-ulcer agent.

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To elucidate mechanisms involved in the anti-ulcer action of cetraxate, the effects of this agent on the ulcer index (UI), fibrinolytic activity (FA) and contents of several connective tissue components in ulcer tissue were examined using aspirin- and acetic acid ulcers in rats. In aspirin ulcer,

An acidic glycoconjugate from Lythrum salicaria L. with controversial effects on haemostasis.

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OBJECTIVE Lythrum salicaria L. belongs to the small Lythraceae family of 22 genera, which range in habit from herbs to shrubs and trees found with worldwide distribution (Heywood, 1993). The generic name of Lythrum derived from Greek "luthron"--blood, possibly referring to the color of the flowers

Heparin depolymerization by immobilized heparinase: A review.

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Heparin is a member of the glycosaminoglycan (GAG) family composed of glucosamine and uronic acid units containing O-sulfo, N-acetyl and N-sulfo groups, which are alternating in the chain and linked by 1→4 manner. It is a naturally occurring anticoagulant that prevents the formation of clots and

Synovitis and osteoarthritic changes in canine articular cartilage after anterior cruciate ligament transection. Effect of surgical hemostasis.

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Anterior cruciate ligament transection (ACLT) in the dog produces changes in the articular cartilage of the unstable knee that are consistent with those of osteoarthritis (OA). To determine whether the degrees of severity of OA cartilage changes, of synovitis, and of synovial iron deposition were

An arabinogalactan-glycoconjugate from Genipa americana leaves present anticoagulant, antiplatelet and antithrombotic effects.

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Glycoconjugates extracted from Genipa americana leaves (PE-Ga) were separated into two fractions, denominated as PFI and PFII (total carbohydrate: 23-36%/uronic acid: 9-30%; protein:4-5%; polyphenols:0.776-0.812 mg/g), mainly composed by arabinose, galactose and uronic acid and presenting high (PFI)

Recent advances in biotechnology for heparin and heparan sulfate analysis

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Heparan sulfate (HS) is a class of linear, sulfated, anionic polysaccharides, called glycosaminoglycans (GAGs), which present on the mammalian cell surfaces and extracellular matrix. HS GAGs display a wide range of critical biological functions, particularly in cell signaling. HS is composed of

Structural characterization and functional effects of a circulating heparan sulfate in a patient with hepatocellular carcinoma.

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A circulating anticoagulant was isolated from the plasma of a 42-year-old man with cirrhosis and hepatocellular carcinoma who had an unusual coagulation test profile. The patient developed a fatal coagulopathy, unresponsive to protamine therapy or plasma exchange following liver biopsy. However, at

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