PMID- 1647552 OWN - NLM STAT- MEDLINE DCOM- 19910729 LR - 20061115 IS - 0340-6245 (Print) IS - 0340-6245 (Linking) VI - 65 IP - 4 DP - 1991 Apr 8 TI - Antithrombotic and anticoagulant activity of depolymerized fragment of the glycosaminoglycan extracted from Stichopus japonicus Selenka. PG - 369-73 AB - The antithrombotic and anticoagulant activities of depolymerized fragment (DHG-1) of glycosaminoglycan extracted from Stichopus japonicus Selenka (FGAG) were compared with those of unfractionated heparin (UFH) or low molecular weight heparin (LMWH). DHG-1 at more than 0.3 mg/kg i.v. significantly prevented death of mice treated with thrombin (800 U/kg i.v.). Under the same conditions, FGAG, UFH and LMWH significantly prevented death of mice at more than 0.3, 0.3 and 0.6 mg/kg i.v., respectively. In normal plasma, the concentration required to double the activated partial thromboplastin time (doubling APTT) of DHG-1, FGAG, LMWH and UFH were 12.0, 2.4, 5.8, and 1.2 micrograms/ml, respectively. In antithrombin III (AT III)-depleted plasma, doubling APTT of DHG-1, FGAG, and UFH were 11.3, 2.1, and 18.5 micrograms/ml, respectively. Prothrombin activation in contact-activated plasma was inhibited completely for 60 s at doubling APTT by all glycosaminoglycans used in this study. DHG-1, however, showed much less antithrombin activity than UFH as tested by thrombin clotting time in plasma and chromogenic assay in the presence of AT III. Moreover, DHG-1 showed much less inhibitory activity on factor Xa, factor IXa, and glass surface-induced factor IXa generation than UFH. These results suggested that DHG-1 is one of the promising antithrombotic agents with quite different anticoagulant property from UFH or LMWH. FAU - Suzuki, N AU - Suzuki N AD - Taiho Pharmaceutical Co., Ltd, Tokushima, Japan. FAU - Kitazato, K AU - Kitazato K FAU - Takamatsu, J AU - Takamatsu J FAU - Saito, H AU - Saito H LA - eng PT - Comparative Study PT - Journal Article PL - Germany TA - Thromb Haemost JT - Thrombosis and haemostasis JID - 7608063 RN - 0 (Anticoagulants) RN - 0 (Fibrinolytic Agents) RN - 0 (Glycosaminoglycans) RN - 0 (Heparin, Low-Molecular-Weight) RN - 9005-49-6 (Heparin) SB - IM MH - Animals MH - *Anticoagulants/isolation & purification MH - Blood Coagulation/drug effects MH - Blood Coagulation Tests/methods MH - *Fibrinolytic Agents/isolation & purification MH - Glycosaminoglycans/isolation & purification/*pharmacology MH - Heparin MH - Heparin, Low-Molecular-Weight/pharmacology MH - Male MH - Mice MH - Mice, Inbred ICR MH - Sea Cucumbers MH - Thrombosis/prevention & control EDAT- 1991/04/08 00:00 MHDA- 1991/04/08 00:01 CRDT- 1991/04/08 00:00 PHST- 1991/04/08 00:00 [pubmed] PHST- 1991/04/08 00:01 [medline] PHST- 1991/04/08 00:00 [entrez] PST - ppublish SO - Thromb Haemost. 1991 Apr 8;65(4):369-73.