Abstract：
:Tissue plasminogen activator (tPA) activity in blood and blood plasma has been difficult to determine because it is unstable, especially in subjects with high levels of plasminogen activator inhibitor type 1 (PAI-1). We have attempted to stabilize the tPA activity by collecting 9 volumes of blood in 1 volume acidic citrate buffer which immediately lowers the pH of the blood. At final blood pH of 4.9 to 6.3, consistent and high tPA activity levels were found. One acidic citrate buffer composition, 0.5 mol/l citrate buffer pH 4.0, resulted in final blood pH 5.5, tPA half-life of 10 days and an acceptably low degree of haemolysis. This anticoagulant composition was selected for more extensive evaluation and was used to collect blood plasma samples from 29 volunteers in the morning after a 10-minute bed rest. Basal tPA activity, mean and SD, was 0.47 +/- 0.21 IU/ml. After donating of the first blood sample, 10 of the volunteers entered into a 24-hour fast after which they donated a second sample. During the fast, the basal tPA activity increased from 0.34 +/- 0.21 to 0.47 +/- 0.23 IU/ml (p = 0.05) and the PAI-1 activity decreased from 11.4 +/- 11.6 to 6.3 +/- 8.9 U/ml (p = 0.04).
journal_name
Thromb Haemostjournal_title
Thrombosis and haemostasisauthors
Rånby M,Sundell IB,Nilsson TKsubject
Has Abstractpub_date
1989-11-24 00:00:00pages
917-22issue
3eissn
0340-6245issn
2567-689Xjournal_volume
62pub_type
杂志文章abstract：:We report for the first time that saliva of the hard tick and Lyme disease vector, Ixodes scapularis, is a potent inhibitor of angiogenesis. Saliva (< or = 1:500 dilutions) or salivary gland (0.1-0.5 pairs/assay) dose-dependently inhibits microvascular endothelial cell (MVEC) proliferation. Inhibition was also detecte...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH04-09-0566
更新日期：2005-07-01 00:00:00
abstract：:Vascular endothelial cells perform many differentiated functions in processes such as angiogenesis, hemostasis, and inflammation. The number of recognized differentiated functions has increased rapidly in recent years, but there may be many more still unrecognized. The purpose of this study is to estimate the fraction...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1993-05-03 00:00:00
abstract：:Knowledge on the natural history of mesenteric vein thrombosis (MVT) and of the efficacy and safety of long-term oral anticoagulant therapy (OAT) in this setting is based on small uncontrolled series of patients with a limited follow-up. It was the aim of the study to assess the natural history of MVT in a cohort of p...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章,多中心研究
doi：10.1160/TH08-12-0842
更新日期：2009-09-01 00:00:00
abstract：:Coagulation factor III (tissue factor) is required for significant activation of factor X in the presence of factor VIIa. Factor III is a membrane protein which requires bound phospholipids for activity, and removal of lipids during purification of factor III abolishes its activity. The activity can be recovered if li...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1980-08-29 00:00:00
abstract：:Complement C3 is a novel risk factor for cardiovascular disease (CVD), but the underlying mechanism is currently unknown. We determined the associations of the anaphylatoxin C3a, the activation product of C3, and of C3 itself with estimates of atherosclerosis and CVD. We studied associations of C3a and C3 with carotid...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH13-10-0831
更新日期：2014-06-01 00:00:00
abstract：:The effect of thrombin on the phosphorylating activity of platelet membranes was compared to that of trypsin. Preincubation of non-32P phosphorylated platelet membranes with or without either of these two enzymes resulted in a considerable loss of membrane protein kinase activity which was most severe when trypsin was...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1976-06-30 00:00:00
abstract：:Previous studies have demonstrated that cell-permeable cytoplasmic tail (CT) alpha(II)beta peptides can modulate the activation of alpha(IIb)b(3). As alpha(V) CT contains an alpha(II)beta homologous region, a series of cell-permeable alpha(V) and alpha(IIb) peptides were generated to determine if alpha(V) CT can modul...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH07-08-0498
更新日期：2008-01-01 00:00:00
abstract：:Direct oral anticoagulants may be effective and safe for treatment of venous thromboembolism (VTE) in cancer patients, but they have not been compared with low-molecular-weight heparin (LMWH), the current recommended treatment for these patients. The Hokusai VTE-cancer study is a randomised, open-label, clinical trial...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章,多中心研究,随机对照试验
doi：10.1160/TH15-06-0452
更新日期：2015-11-25 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：:Prothrombin complex concentrates (PCC) are known to carry a risk of thromboembolism. We have chosen to reassess the problem of detecting in vivo signs of activation of the clotting mechanism by assaying fibrinopeptide A (FpA) after PCC administration in hemophilic patients during bleeding episodes. FpA was significant...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1980-10-31 00:00:00
abstract：:Interactions between the uPA receptor (uPAR) and various integrins, including alpha(5)beta(1), are known to modulate integrin-dependent cell adhesion, and we have shown that the integrin-associated tetraspanin protein CD82 down-regulates uPAR-dependent plasminogen activation by affecting alpha(5)beta(1) cellular local...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2009-05-01 00:00:00
abstract：:The frequency of heterozygous protein C and protein S deficiency, detected by measuring total plasma antigen, in a group (n = 141) of young unrelated patients (less than 45 years old) with venous thrombotic disease was studied and compared to that of antithrombin III, fibrinogen, and plasminogen deficiencies. Among 91...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1988-02-25 00:00:00
abstract：:The prevalence of coagulation disorders in patients with upper extremity deep-vein thrombosis (UE-DVT) is unknown due to only a few observational studies of limited size reporting varying results. Therefore, we aimed to evaluate the prevalence of thrombophilia in patients with UE-DVT compared to patients with lower ex...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2008-09-01 00:00:00
abstract：:Tissue thromboplastin apoprotein was partially purified from human brain. The apoprotein was recombined with mixed phospholipids to yield active thromboplastin. The recombined thromboplastin induced proteolytic activation of isolated human factor IX in the presence of factor VII and Ca2+. The clotting times of various...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1982-08-24 00:00:00
abstract：:The tail bleeding time (BT) in rats definitely varies according to the method applied. Of the various variables that may influence BT, we have evaluated the position (horizontal or vertical) of the tail, the environment (air or saline), the temperature (4 degrees, 23 degrees or 37 degrees C) and the type of anaesthesi...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1982-08-24 00:00:00
abstract：:Ridogrel (6.3 x 10(-6) to 10(-4) M) inhibited contractions of isolated rat caudal arteries and rabbit femoral arteries caused by U-46619. The slope of an Arunlakshana-Schild plot (pA2-value: 3.4 x 10(-6) M) on the caudal artery was slightly higher than one (1.14). This effect was maximal within 20 min of incubation of...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1990-08-13 00:00:00
abstract：:Mice with a total deficiency in blood coagulation Factor X (FX) were generated by targeted replacement of an 18-kb fragment of the FX gene, comprising all exons encoding the mature FX protein, with a neo(r) cassette. The genotype distribution among the offspring from heterozygous breeding pairs suggested that FX defic...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2000-02-01 00:00:00
abstract：:The pathogenesis of abdominal aortic aneurysm (AAA) involves a central component of chronic inflammation which is predominantly mediated by myeloid cells. We hypothesized that the local inflammatory activity may be reflected in systemic alterations of neutrophil and monocyte populations as well as in soluble factors o...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1055/s-0039-1679939
更新日期：2019-05-01 00:00:00
abstract：:Hormone replacement therapy has been associated with venous thromboembolism. Controversy exists regarding the appropriate management of hormone replacement in the perioperative setting and in other situations--such as acute illness--predisposing to acute venous thromboembolism. We performed a case-control study to det...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH04-03-0165
更新日期：2004-08-01 00:00:00
abstract：:Direct oral factor inhibitors (DOFIs) are an attractive alternative to vitamin K antagonists (VKA) for the treatment of patients with antiphospholipid syndrome (APS). In the absence of prospective, randomised trial data, reports of therapeutic failures in clinical practice alert clinicians to potential limitations of ...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH14-03-0272
更新日期：2014-11-01 00:00:00
abstract：:We have previously suggested that the human homologue of the Drosophila transient receptor potential protein, TRPC1, is involved in conducting store-operated Ca2+ entry (SOCE) in human platelets since an antibody raised against the pore-forming region of TRPC1 inhibited SOCE. Here we have investigated plasma membrane ...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH05-06-0391
更新日期：2005-10-01 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：:Platelets contain, besides alpha- and delta-granules, lysosomes which store glycohydrolases able to degrade glycoproteins, glycolipids and glycosaminoglycans. While several studies have shown that alpha- and delta-granule secretion takes place "in vivo" in humans upon platelet activation, no data are available on the ...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2000-01-01 00:00:00
abstract：:Thrombomodulin (TM) is an endothelial glycoprotein that functions as a thrombin cofactor in the activation of protein C. Recent evidence has revealed that TM has unique effects on cellular proliferation, adhesion, and inflammation. We examined TM expression in the arterial remodeling process with different shear condi...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2007-04-01 00:00:00
abstract：:Samples taken at various stages of preparation of intermediate purity factor VIII concentrate were assayed for factor VIII coagulant activity (VIII:C), factor VIII coagulant antigen (VIIIC:Ag) and factor VIII related antigen (VIIIR:Ag). The antigen results were used to assess mechanical loss during fractionation as th...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1981-10-01 00:00:00
abstract：:We report on three unrelated individuals with the same uncommon type of dysfibrinogenemia, originating from Bergamo, Essen and Perugia. None of them showed bleeding symptoms while the Bergamo patient and members of her family presented with a thrombotic tendency. The presence of a defective fibrinogen was suggested by...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1986-12-15 00:00:00
abstract：:Probands from 15 unrelated families with hereditary protein S deficiency type I, that is having a plasma total protein S concentration fifty percent of normal, were screened for abnormalities in their protein S genes by Southern analysis. Two probands were found to have a deviating DNA pattern with the restriction enz...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1989-11-24 00:00:00
abstract：:Patients with atrial fibrillation at moderate to high risk of stroke are not always anticoagulated despite a lack of contraindications to vitamin K antagonists (VKAs) like warfarin. These patients are treated with aspirin, aspirin-clopidogrel combination therapy or even receive no thromboprophylaxis. The oral direct t...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章,meta分析
doi：10.1160/TH10-10-0642
更新日期：2010-12-01 00:00:00
abstract：:Pregnancy and delivery have measurable effects on haemostatic and immunological changes. Degradation of fibrinogen induces significant structural and conformational modulation and leads to the progressive loss of antigenic sites present on the parent molecule but also exposes some new sites. These neoantigens may be r...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1998-05-01 00:00:00
abstract：:von Willebrand disease (VWD) is a quantitative or qualitative defect in von Willebrand factor (VWF) resulting in mucocutaneous bleeding symptoms and hemorrhage following hemostatic challenges, such as trauma or surgery. VWD-specific therapy, DDAVP (1-desamino-8-D-arginine vasopressin) and VWF concentrates, is necessar...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1055/s-0040-1713636
更新日期：2020-08-01 00:00:00
