Abstract：
:Haemorrhagic metalloproteinases from Bothrops jararaca and other venoms degrade vessel-wall and plasma proteins involved in platelet plug and fibrin clot formation. These enzymes also cause proteolytic digestion of fibrinogen which has been suggested to cause defective platelet function. Fibrinogen degradation by jararhagin, a metalloproteinase from B. jararaca, and the effect of jararhagin fibrinogenolysis on both platelet aggregation and fibrin clot formation were investigated. Jararhagin was found to cleave human fibrinogen in the C-terminal region of the A alpha-chain giving rise to a 285-290 kDa fibrinogen molecule lacking the A alpha-chain RGD 572-574 platelet-binding site. Platelet binding and aggregation of ADP-activated platelets is unaffected by this modification. This indicates that the lost site is not essential for platelet aggregation, and that the remaining platelet binding sites located in the N-terminal portion of A alpha chains (RGD 95-97) and the C-terminal of gamma chains (dodecapeptide 400-411) are unaffected by jararhagin-digestion of fibrinogen. Fibrin clot formation with thrombin of this remnant fibrinogen molecule was defective, with poor polymerization of fibrin monomers but normal release of FPA. The abnormal polymerization could be explained by the loss of one of the two complementary polymerization sites required for side-by-side association of fibrin protofibrils. Jararhagin-induced inhibition of platelet function, an important cause of haemorrhage in envenomed patients, is not caused by proteolysis of fibrinogen, as had been thought, and the mechanism remains to be elucidated.
journal_name
Thromb Haemostjournal_title
Thrombosis and haemostasisauthors
Kamiguti AS,Slupsky JR,Zuzel M,Hay CRsubject
Has Abstractpub_date
1994-08-01 00:00:00pages
244-9issue
2eissn
0340-6245issn
2567-689Xjournal_volume
72pub_type
杂志文章abstract：:The increase in nitric oxide (NO) production in lipopolysaccharide (LPS)-induced sepsis is thought to contribute to the development of shock. However, NO could also play an antithrombotic role. Little is known about the modulating effect of NO on the endothelial overexpression and production of tissue factor (TF) and ...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2002-12-01 00:00:00
abstract：:Thromboembolic complications have been attributed to the use of radiographic contrast media (CM) during interventional procedures for arterial revascularization. However, due to the low frequency of adverse events, comparisons between different CM have been difficult to perform, although it has been suggested that ion...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2001-03-01 00:00:00
abstract：:Bacterial pneumonia, the most common cause of sepsis, is associated with activation of coagulation. Factor XI (FXI), the key component of the intrinsic pathway, can be activated via factor XII (FXII), part of the contact system, or via thrombin. To determine whether intrinsic coagulation is involved in host defence du...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH16-12-0920
更新日期：2017-07-26 00:00:00
abstract：:Venous oxygen tension (pO2) was measured in discrete samples of blood obtained through the femoral vein of cardiac catheterisation patients before, during and after application of sustained external graduated pressure in the form of compression stockings (T. E. D. Kendall). There was a significant reduction (p less th...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1984-02-28 00:00:00
abstract：:Cysteinyl leukotrienes (i.e. LTC4, LTD4), produced by activated leukocytes or by transcellular metabolism may act at different levels on vascular smooth muscle cells (VSMC) during inflammatory process or atherosclerosis. We studied the effect of LTC4, LTD4, and LTE4 on the in vitro proliferation of rat VSMC, measured ...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1996-07-01 00:00:00
abstract：:We compared the anticoagulant, antithrombotic and bleeding effects of highly sulfated dermatan sulfates from invertebrates and their mammalian counterpart. An invertebrate dermatan sulfate containing 2-O-sulfated alpha-L-iduronic acid and 4-O-sulfated N-acetyl-beta-D-galactosamine residues is a potent anticoagulant du...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2001-11-01 00:00:00
abstract：:The technique of crossed immunoelectrophoresis has been used to study the binding to purified antithrombin III (At III) of heparin and other mucopolysaccharides. The technique was unable to detect differences among samples of whole heparin from various manufacturers, but proved useful in studying the binding of hepari...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1980-02-29 00:00:00
abstract：:Clinical observations have shown that heparin has antiinflammatory activities. The effect of heparin on neutrophil chemotaxis was evaluated in vitro in the Boyden Chamber. This method enabled differentiation between the direct effects of heparin on neutrophil migration and locomotion, and its effects on chemotactic fa...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1984-10-31 00:00:00
abstract：:Catheter-directed thrombolysis has gained increasing acceptance for the treatment of patients who present with vascular occlusion; however, intravenous injection may be preferable in selected patients. Recombinant prourokinase (r-proUK) is a recently-developed fibrin-selective thrombolytic agent with specificity for c...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1999-02-01 00:00:00
abstract：:Assembly of fibronectin into the provisional fibrillar matrix of embryonic tissues and wounds is a complicated process by which the intracellular cytoskeleton determines the pattern of assembly of extracellular matrix and vice versa. Assembly is restricted to dimeric fibronectin molecules with intact N-terminal module...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章,评审
doi：
更新日期：1995-07-01 00:00:00
abstract：BACKGROUND: Accurate diagnosis of symptomatic low von Willebrand factor (VWF) remains a major challenge in von Willebrand disease (VWD). However, present tests do not adequately take into account flow forces that, at very high shear rates, reveal a weakness in the VWF-platelet glycoprotein glycoprotein Ib bond in norma...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1055/s-0040-1709525
更新日期：2020-05-01 00:00:00
abstract：:Despite years of research and efforts to translate stroke research to clinical therapy, ischaemic stroke remains a major cause of death, disability, and diminished quality of life. Primary and secondary preventive measures combined with improved quality of care have made significant progress. However, no novel drug fo...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章,评审
doi：10.1160/TH14-05-0448
更新日期：2014-11-01 00:00:00
abstract：:Fresh retracted clots are known to be poorly lysable by fibrinolytic agents. We have studied whether lysis of retracted clots could be enhanced by bulk transport in comparison to pure diffusion of plasma containing urokinase (400 IU/ml) into the clots. Cylindrical retracted blood clots were occlusively glued by a poly...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1992-12-07 00:00:00
abstract：:Plasmin triggers chemotaxis and NF-kappa B- and AP-1-mediated proinflammatory gene expression in human peripheral monocytes (PM). Compared with macrophages and dendritic cells, PM express mainly the peroxisome proliferator-activated receptor (PPAR) gamma and traces of PPAR alpha as detected by semiquantitative RT-PCR ...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2002-08-01 00:00:00
abstract：:3-phosphoinositide-dependent protein kinase 1 (PDK1), a member of the protein A,G and C (AGC) family of proteins, is a Ser/Thr protein kinase that can phosphorylate and activate other protein kinases from the AGC family, including Akt at Thr308, all of which play important roles in mediating cellular responses. The fu...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH13-06-0484
更新日期：2014-03-03 00:00:00
abstract：:Thrombospondin, a trimeric glycoprotein contained in the platelet alpha-granules, has been proposed as a marker of in vivo platelet activation. However, it is also synthesised by a range of other cells. The extraplatelet contribution to plasma levels of thrombospondin was therefore estimated by investigating the relat...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1988-04-08 00:00:00
abstract：:The fibrinolytic capacity of 121 patients with a history of venous thrombosis and/or pulmonary embolism was studied by venous occlusion technique, at earliest 3 months after the last thromboembolic episode. After discontinuation of oral anticoagulation treatment the clinical course of the patients was followed and new...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1984-10-31 00:00:00
abstract：:Human platelets have unique and reproducible mRNA profiles, with evidence for distinct profiles in haematopoietic stem cell disorders associated with thrombocytosis. Platelet transcript profiling is traditionally studied by microarray analysis, quantitative reverse transcription-PCR or serial analysis of gene expressi...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2008-11-01 00:00:00
abstract：:Causative mutations in the factor VIII gene of seven unrelated patients with severe haemophilia A were identified using the mutation screening procedure conformation sensitive gel electrophoresis (1) and characterised by direct sequencing. Female family members of all patients had requested either carrier status deter...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1998-04-01 00:00:00
abstract：:Mechanisms linking deep vein thrombosis (DVT) and subclinical atherosclerosis and risk of cardiovascular events are poorly understood. The aim of this study was to investigate the potential impact of CX3CR1/CX3CL1 axis in DVT-associated endothelial dysfunction. The study included 22 patients (age: 37.5 ± 8.2 years) wi...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1055/s-0038-1629897
更新日期：2018-03-01 00:00:00
abstract：:The clearance of radiolabeled human fibrinogen fragments X and Y was studied in the mouse model. Fragment X cleared rapidly from the circulation with less than 10% of the ligand remaining in the circulation at 4 hr. The clearance of fragment Y was somewhat slower, but was identical to the rate of clearance of fragment...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1983-04-28 00:00:00
abstract：:A recent report indicated that an arrow poison used by the native Indians of Rondonia, Brazil, to kill small animals was associated with profuse bleeding. The arrow poison was prepared from the bark of a tree, known locally as Tike-Uba. We have obtained bark and sap specimens from this tree and have characterized a po...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1990-02-19 00:00:00
abstract：:We studied the recovery pattern of platelet malondialdehyde (MDA) formation after a single intake of various doses of aspirin (ASA). In normal subjects, there were striking differences in the recovery pattern between large doses (1,000 or 500 mg) and small doses (100 or 50 mg) of oral ASA. The 2 day lag phase was pres...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1982-08-24 00:00:00
abstract：:Transplant-associated thrombotic microangiopathy (TA-TMA) is a severe and life-threatening complication of hematopoietic cell transplantation (HCT) that often coincides with graft-versus-host-disease (GVHD). Although endothelial damage seems to be the common denominator for both disorders, the role of complement syste...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1055/s-0039-1692721
更新日期：2019-09-01 00:00:00
abstract：:The A4070G polymorphism in exon 13 of the factor V (FV) gene, which replaces His by Arg at position 1299 of the B domain, was recently shown to influence circulating FV levels and to contribute to the activated protein C (APC) resistance phenotype. We examined the impact of this polymorphism in a population of unselec...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1999-02-01 00:00:00
abstract：OBJECTIVE:To assess the safety and efficacy of a fixed dose of recombinant activated factor VII (rFVIIa; NovoSeven) in the home setting for mild to moderately severe joint, muscle; and mucocutaneous bleeding episodes in patients with haemophilia A or B with inhibitors. DESIGN:Multicentre, open-label, single arm, phase...
journal_title：Thrombosis and haemostasis
pub_type： 临床试验,杂志文章,多中心研究
doi：
更新日期：1998-12-01 00:00:00
abstract：:Platelet aggregation and fibrinogen binding in whole blood, induced either by ADP or by a 14 amino acid peptide mimicking an N-terminal region of the platelet thrombin receptor (TRP, thrombin receptor activating peptide), have been studied with blood from different species. Aggregation was assessed by counting the num...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1993-09-01 00:00:00
abstract：:The fibrin-mediated enhancement of the activation of plasminogen by tissue-type plasminogen activator observed with normal fibrin, is strongly decreased with fibrin Dusard, although the binding of tissue-type plasminogen activator to this fibrin is normal. This impaired fibrin-mediated plasminogen activation is most l...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1984-02-28 00:00:00
abstract：:An algal sulfated galactan has high anticoagulant and antithrombotic activities. Its serpin-dependent anticoagulant action is due to promoting thrombin and factor (F)Xa inhibition by antithrombin and heparin cofactor II. Here, we evaluated the anticoagulant effect of the algal sulfated galactan using serpin-free plasm...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH09-04-0273
更新日期：2009-12-01 00:00:00
abstract：:Venous thromboembolism (VTE) is a central concern in the intensive care unit (ICU). However, little is known about both current practices for VTE prevention in the ICU and the risk for VTE in persons with severe sepsis and septic shock. XPRESS was a randomized, double-blind, placebo-controlled trial of prophylactic he...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章,随机对照试验
doi：
更新日期：2009-01-01 00:00:00
