Abstract：
:The turnover of recombinant pro-urokinase (Rec-pro-UK), recombinant urokinase (Rec-UK) and natural urinary urokinase (Nat-UK) was studied in rabbits and in squirrel monkeys (Saimiri sciureus). Following intravenous injection, urokinase activity disappeared rapidly from the blood. The initial disappearance rate could be described by a single exponential term with a t 1/2 of 3 to 6 min for each molecular form of urokinase in both species. Urokinase related antigen, measured with a radioimmunoassay in the plasma of the squirrel monkeys disappeared with a t 1/2 of 3.5 min for Rec-pro-UK, 6.0 min for Rec-UK and 8.0 min for Nat-UK. The clearance and organ distribution of Rec-pro-UK, Rec-UK and Nat-UK was studied with the use of 125I-labeled preparations. In each case the radioactivity initially disappeared rapidly from the plasma, also with a t 1/2 of a few min, but then the disappearance rate slowed down. Labeled Rec-UK in which the active site histidine was irreversibly blocked by alkylation, disappeared equally rapidly from the plasma. Measurement of the organ distribution of 125I at different time intervals revealed that all three types of urokinase were rapidly accumulated in the liver, which was followed by release of degradation products in the blood. Experimental hepatectomy prolonged the t 1/2 of each type of urokinase very markedly (t 1/2 greater than 30 min). These findings indicate that urokinase is rapidly removed from the blood by clearance and degradation in the liver. Recognition by the liver does not require a functional active site and is not mediated via carbohydrate side chains. Inactivation by plasma protease inhibitors does not represent a significant pathway of urokinase inhibition in vivo.
journal_name
Thromb Haemostjournal_title
Thrombosis and haemostasisauthors
Collen D,De Cock F,Lijnen HRsubject
Has Abstractpub_date
1984-08-31 00:00:00pages
24-6issue
1eissn
0340-6245issn
2567-689Xjournal_volume
52pub_type
杂志文章abstract：:The development of antibodies against infused factor VIII (FVIII) in patients with haemophilia A is a serious complication leading to poorly controlled bleeding and increased morbidity. No treatment has been proven to reduce high titre antibodies in patients who fail immune tolerance induction or are not candidates fo...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章,多中心研究
doi：10.1160/TH14-01-0078
更新日期：2014-09-02 00:00:00
abstract：:There is little information on the clinical outcome of patients with venous thromboembolism and renal insufficiency. RIETE is an ongoing, prospective registry of consecutive patients with acute, objectively confirmed, symptomatic deep vein thrombosis (DVT) or pulmonary embolism (PE). In this analysis we analyzed the t...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2007-10-01 00:00:00
abstract：:It is now recognised that acute myocardial infarction results from the rupture of atherosclerotic plaques. Lymphocytes and macrophages, which infiltrate rupture sites, contribute to plaque degradation by expressing urokinase (u-PA) bound to cell membrane by urokinase receptor (u-PAR) and by secreting metalloproteinase...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2000-10-01 00:00:00
abstract：:The in vitro effect of nifedipine, a calcium channel blocker of the dihydropyridine (DHP) type, on platelet aggregation was reinvestigated considering especially the capability of platelets to form endogenous nitric oxide (NO). We studied the dose-dependent antiaggregatory property of nifedipine in porcine platelet ri...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1994-08-01 00:00:00
abstract：:Severe postpartum haemorrhages (PPH) are responsible for maternal morbidity/mortality. Their complex management sometimes requires haemostatic supplementation, and therapeutic trials on fibrinogen or activated factor VII, which may add to the thrombotic risk, are currently being considered. Furthermore, there is a ris...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2008-11-01 00:00:00
abstract：:Heparin-associated thrombocytopenia (HAT) is a severe complication of heparin therapy. Its diagnosis is difficult. Conventional assays employ platelet aggregometry (PAA) and/or 14C-serotonin release (SRA) which are either insensitive (PAA) or require radioactive tracers (SRA). We here describe a newly developed sensit...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1991-12-02 00:00:00
abstract：:Both the HEPTEST and amidolytic anti factor Xa assays are currently being used for heparin activity detection in plasma from patients receiving standard heparin or low molecular weight heparin (LMWH). In this study we have investigated the influence of recombinant and endogenous Tissue Factor Pathway Inhibitor (TFPI) ...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1992-09-07 00:00:00
abstract：:Both heightened platelet reactivity and an occluded infarct related artery (IRA) on initial angiography and at the time of primary percutaneous coronary intervention (PCI) are associated with a worsened clinical outcome in patients with ST-elevation myocardial infarction (STEMI). However, the relationship between plat...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH10-08-0528
更新日期：2011-08-01 00:00:00
abstract：:The calcium electrode is a convenient, inexpensive, and non-traumatic method for measuring changes in the extracellular calcium which accompanies a platelet release reaction. With this instrument, the temporal pattern of release by platelets in a buffered-saline medium following thrombin stimulation was observed as fo...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1977-06-30 00:00:00
abstract：:Seven healthy male volunteers were subjected to exercise of short (STR; 1.7 km), middle (MTR; 4.8 km) and long (LTR; 10.5 km) term runs at a speed close to maximal capacity. Blood samples were drawn before, immediately after exercise and at intervals over the next 10 h. FVIIIR:Ag (von Willebrand factor) rose 2.2-3.2 f...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1990-11-30 00:00:00
abstract：:In patients with von Willebrand disease (VWD) replacement therapy with factor VIII/von Willebrand (VWF) concentrates is increasingly applied as prophylactic regimen. Since 2000, 82 consecutively enrolled patients with clinically relevant bleeding episodes (spontaneous, peri- or postoperative) were diagnosed with VWD [...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH10-09-0616
更新日期：2011-04-01 00:00:00
abstract：:Erythropoietin has shown to be effective in the correction of the hemostatic defect present in uremic patients. We have investigated the possible effect of recombinant human erythropoietin (rHuEPO) on the signaling processes occurring in platelets. Platelet suspensions were obtained from hemodialyzed patients before a...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1999-10-01 00:00:00
abstract：:The transforming growth factor-beta (TGFbeta) family of growth factors are major regulators of wound repair, scar formation, and fibrosis. One of the prominent features of TGFbeta biology is the fact that this growth factor is secreted as a latent precursor, which may be directed to and stored at specific sites in the...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章,评审
doi：10.1160/TH04-05-0324
更新日期：2004-08-01 00:00:00
abstract：BACKGROUND: Anticoagulant therapy has seldom been achieved in randomized trials targeting nonspecific overall sepsis patients. Although the key components to identify the appropriate target in sepsis may be disseminated intravascular coagulation (DIC) and high disease severity, the interaction and relation of these two...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章,多中心研究
doi：10.1055/s-0039-1693740
更新日期：2019-11-01 00:00:00
abstract：:Heparin and low molecular weight heparins stimulate two to three fold the accumulation of an antithrombotic heparan sulfate secreted by endothelial cells in culture. This led us to search for the minimum structural requirements of the heparin molecule able to elicit the enhancement of the heparan sulfate. Fragments we...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1995-10-01 00:00:00
abstract：:A nutritionally induced obesity model was used to investigate the modulation of fibrinolytic and gelatinolytic activity during the development of adipose tissue. Five week old male mice were fed a standard fat diet (SFD, 13% kcal as fat) or a high fat diet (HFD, 42% kcal as fat) for up to 15 weeks. The HFD resulted in...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2002-08-01 00:00:00
abstract：:Although there is considerable evidence that platelet activation is associated with polymerization of actin, it is not known whether there is some pre-existing F-actin even before activation. We have examined the state of actin polymerization in nonactivated platelets by deoxyribonuclease assay of G-actin and total ac...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1982-10-29 00:00:00
abstract：BACKGROUND:Platelet activation plays a major role in acute vessel closure after coronary angioplasty. In the randomized Balloon Angioplasty and Anticoagulation Study (BAAS), pretreatment with oral anticoagulants in addition to aspirin resulted in a 47% reduction of acute complications as compared with aspirin alone. Th...
journal_title：Thrombosis and haemostasis
pub_type： 临床试验,杂志文章,随机对照试验
doi：
更新日期：2002-12-01 00:00:00
abstract：:The simultaneous additon of suboptimal concentrations of factor VIII and intact or plasmin-lysed fibrinogen into mixtures of the vitamin K dependent factors, phospholipids, adsorbed bovine serum (supplier to factor V) and calcium, increased the amount of thrombin which was generated three to twenty times over the sum ...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1976-04-30 00:00:00
abstract：:Platelets are suggested to play a crucial role in cancer progression and the prothrombotic state of cancer patients. Here, we aimed to examine the activation status of platelets in cancer patients and investigate their association with risk of death and occurrence of venous thromboembolism (VTE) in a prospective obser...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH16-02-0123
更新日期：2017-01-05 00:00:00
abstract：:Recombinant factor VIIa (rFVIIa: NovoSeven; Novo Nordisk) has proven efficacy in the treatment of haemophilic patients with inhibitors. This prospective, double-blind study compared rFVIIa (35 vs. 90 microg/kg) in the initiation and maintenance of haemostasis during and after elective surgery. Patients with inhibitors...
journal_title：Thrombosis and haemostasis
pub_type： 临床试验,杂志文章,随机对照试验
doi：
更新日期：1998-11-01 00:00:00
abstract：:Advanced glycation end-products (AGEs) interact with their receptor RAGE, leading to an inflammatory state. We investigated the role of RAGE in postischaemic leukocyte adhesion after myocardial infarction and its effect on postischaemic myocardial function. Wildtype (WT), ICAM-1-/-, RAGE-/- or ICAM-1/RAGE-/- mice unde...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH15-11-0898
更新日期：2016-08-01 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：:The content of free-catecholamines in blood platelets is much higher than in plasma and platelet catecholamines must be taken up from plasma, since platelets lack the enzymes for catecholamine synthesis. There is some evidence that platelet catecholamine content under certain circumstances may be an integrated measure...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1988-10-31 00:00:00
abstract：:Primary prevention of cardiovascular events with aspirin in patients with elevated cardiovascular risk, including diabetics, is currently under intense discussion. Data from meta-analyses suggests that the efficacy of aspirin in these patients is low, whereas there is a significantly increased bleeding tendency. Howev...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章,评审
doi：10.1055/s-0039-1694774
更新日期：2019-10-01 00:00:00
abstract：:The effect of chronic administration of ethanol to rats in a controlled regimen upon the activities of the coagulation factors II, VII, VIII, IX and X has been studied. No significant differences were found for factor II, IX and X between the ethanol-treated rats and the control group given an isocaloric diet with car...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1976-12-31 00:00:00
abstract：:East Asian patients have reduced anti-ischemic benefits and increased bleeding risk during antithrombotic therapies compared with Caucasian patients. As potent P2Y12 receptor inhibitors (e.g., ticagrelor and prasugrel) and direct oral anticoagulants are commonly used in current daily practice, the unique risk-benefit ...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1055/s-0040-1718729
更新日期：2020-11-10 00:00:00
abstract：:Tissue factor pathway inhibitor (TFPI) plays a crucial role in haemostasis by regulating TF-induced initiation of coagulation. Since it is expressed by endothelial and trophoblastic cells, TFPI is of particular importance at the placental level and might be involved in the occurrence of gestational vascular complicati...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH10-06-0399
更新日期：2011-01-01 00:00:00
abstract：:Fucoïdans catalyse thrombin inhibition by antithrombin (AT) and heparin cofactor II (HCII); their affinity for each serpin varies according to the seaweed species from which they are extracted, as well as their chemical composition and molecular weight. We extracted a homogeneous fucoïdan fraction from Ascophyllum nod...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1995-11-01 00:00:00
abstract：:This study aims to establish the relative effectiveness and safety of low molecular weight heparin in elderly patients with venous thrombosis in order to find an alternative to oral anticoagulant therapy with less bleeding complications in the long-term treatment of deep venous thrombosis (DVT). One hundred consecutiv...
journal_title：Thrombosis and haemostasis
pub_type： 临床试验,杂志文章,随机对照试验
doi：
更新日期：2000-10-01 00:00:00
