Abstract:
:We evaluated the effect of d-alpha-tocopherol (vitamin E) on the production of prostacyclin (PGI2) by cultured bovine aortic endothelial cells. Vitamin E at physiological doses significantly enhanced the production of PGI2 by aortic endothelial cells when added to the culture simultaneously with histamine, the Ca2+ ionophore A23187 (A23187), plasma-derived serum (PDS), or arachidonic acid. This effect was found to occur in a time- and dose-dependent manner, and the maximal enhancement was produced by 9.28 microM of vitamin E for 1 h incubations. Significantly lower amounts of lipid peroxides were measured in endothelial cells stimulated by 10% PDS with 9.28 microM of vitamin E than in those stimulated without vitamin E for over 24 h, although the stimulation during the initial 1 to 12 h period did not have a significant effect on lipid peroxide formation in cultured aortic endothelial cells. We also demonstrated that bovine aortic endothelial cells have specific binding sites for [3H]vitamin E that exhibited time- and temperature-dependent saturability. At 4 degrees C, the nonspecific binding was 8-12% of the total binding, and the specific binding reached equilibrium by 2 h. Specific binding increased with the concentration of [3H]vitamin E and became saturated at concentrations between 1.5 microM and 2.0 microM per 2.0 x 10(5) cells. Raising the unlabeled vitamin E concentration from 97.7 nM to 1,000 microM reduced the specific binding of 2.0 microM [3H]vitamin E.(ABSTRACT TRUNCATED AT 250 WORDS)
journal_name
Thromb Haemostjournal_title
Thrombosis and haemostasisauthors
Kunisaki M,Umeda F,Inoguchi T,Nawata Hkeywords:
subject
Has Abstractpub_date
1992-12-07 00:00:00pages
744-51issue
6eissn
0340-6245issn
2567-689Xjournal_volume
68pub_type
杂志文章abstract::Matrix metalloproteinases (MMPs) play an important role in many biological and pathological processes including tissue remodeling, wound healing, inflammation, atherosclerosis, and cancer. Numerous publications have supported the concept that activated MMP-2 enhances agonist-induced platelet aggregation and activated ...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:10.1160/TH04-08-0541
更新日期:2005-02-01 00:00:00
abstract::The prothrombin time (PT) test is used to monitor oral anticoagulant therapy. Contact activation of patient blood samples in vitro may shorten the PT and thus lead to underestimation of the degree of anticoagulation. Commercial evacuated tubes for blood collection have been reported to induce shortening of the PT. The...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:
更新日期:1983-10-31 00:00:00
abstract::In order to detect impaired synthesis of blood coagulation factors associated to consumption coagulopathy, a simultaneous evaluation of factor II-related antigen (II rAg) and of antithrombin III (AT III) was carried out in 16 patients affected with severe defibrination. An in vitro preliminary study on plasma and seru...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:
更新日期:1982-06-28 00:00:00
abstract::Circulating microparticles play a pro-inflammatory and procoagulant detrimental role in the vascular dysfunction of septic shock. It was the objective of this study to investigate mechanisms by which a pharmacological modulation of microparticles could affect vascular dysfunction in a rat model of septic shock. Septic...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:10.1160/TH13-04-0313
更新日期:2014-01-01 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::Electronic free platelet counting was more sensitive than turbidimetry to detect collagen-induced platelet activation in human platelet-rich plasma. Purified human C1q exhibited a greater inhibitory effect on collagen-induced platelet aggregation in turbidimetry than free platelet counting. Because the change from sma...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:
更新日期:1987-08-04 00:00:00
abstract::Human protein S (HPS) has three potential N-linked glycosylation sites at Asn458, 468, 489. To study the role of glycosylation at these sites, PCR mutagenesis was used to abolish the consensus sequence of each N-linked glycosylation site (Asn458-->Gln, Ser460-->Gly; Asn468-->Gln, Thr470-->Gly; Asn489-->Gln, Thr491-->G...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:
更新日期:1997-06-01 00:00:00
abstract::Constitutive expression of tissue factor (TF) by acute promyelocytic leukemia (APL) cells may contribute to thrombotic complications. In this study we examined the transcriptional mechanisms of all-trans retinoic acid (ATRA)-induced down-regulation of TF in the APL cell line NB4, by analysis of stable clones expressin...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:10.1160/TH03-02-0087
更新日期:2003-11-01 00:00:00
abstract::Measurement of heparin ex vivo is usually with reference to standard curve prepared with a "spiked" normal human plasma pool (NHP). When the calibration curve was prepared by addition of heparin to whole blood before plasma separation, although the linear relationship was maintained the slope was increased in comparis...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:
更新日期:1989-04-25 00:00:00
abstract::Thrombocytopenia occurred in 11.6% of 43 patients prospectively randomized to receive either bovine lung or porcine mucosal heparin. Four patients received bovine heparin and developed mild to moderate thrombocytopenia after eight to twelve days which resolved when therapy was stopped in one to six days. One patient r...
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:1980-02-29 00:00:00
abstract::Charge-to-alanine mutations of three amino acid residues, viz, D46, D48, and D/Hya71, which are known to be important in stabilizing Ca2+ binding to epidermal growth factor (EGF) domains of vitamin K-dependent blood coagulation proteins, have been engineered into recombinant human protein C (r-PC). The resulting varia...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:
更新日期:1996-11-01 00:00:00
abstract::Megakaryocyte (MK)-derived miRNAs have been detected in platelets. Here, we analysed the expression of platelet and circulating miR-223, miR-26b, miR-126 and miR-140 that might be altered with their target mRNAs in type 2 diabetes mellitus (DM2). MiRNAs were isolated from leukocyte-depleted platelets and plasma sample...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:10.1160/TH16-04-0322
更新日期:2017-02-28 00:00:00
abstract::Protein C is an important inhibitor of blood coagulation. We investigated the effect of two polymorphisms within the promoter region of the protein C gene (C/T at position 2405 and A/G at position 2418) on risk of venous thrombosis and on plasma protein C levels. In addition the combined effect of the two polymorphism...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:
更新日期:2009-01-01 00:00:00
abstract::Laboratory diagnosis of antiphospholipid antibodies is important in patients with clinical features of the antiphospholipid syndrome, such as thrombosis and fetal loss. We have developed a novel method for the detection of antiphospholipid antibodies using flow cytometry. Anionic phospholipids cardiolipin, phosphatidy...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:
更新日期:1993-10-18 00:00:00
abstract::Severe inflammatory complications are a potential consequence in patients with predetermined conditions of infections, pulmonary diseases, or cardiovascular disorders. Notably, the amplitude of the inflammatory response towards these complications can dictate the disease progression and outcome. During the recent year...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章,评审
doi:10.1160/TH-16-11-0858
更新日期:2017-06-27 00:00:00
abstract::Von Willebrand factor (vWF) plays an essential role in platelet adhesion and thrombus formation. Patients with atrial fibrillation (AF) exhibit higher plasma vWF and lower ADAMTS13 antigen levels compared to controls. Little is known about vWF and ADAMTS13 in AF patients treated with cardioversion (CV). Thus we invest...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:10.1160/TH10-09-0615
更新日期:2011-03-01 00:00:00
abstract::The leech protein hirudin is a potent inhibitor of thrombin, but clinical use of recombinant hirudin is restricted by haemorrhagic risks, and complicated by hirudin's rapid clearance from the circulation. We previously employed albumin fusion to slow hirudin variant 3 (HV3) clearance. In this study, we hypothesized th...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:
更新日期:2009-05-01 00:00:00
abstract::In proliferative retinopathies, like proliferative diabetic retinopathy and retinopathy of prematurity (ROP), the hypoxia response is sustained by the failure of the retina to revascularise its ischaemic areas. Non-resolving retina ischaemia/hypoxia results in upregulation of pro-angiogenic factors and pathologic neov...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:10.1160/TH15-01-0051
更新日期:2015-11-25 00:00:00
abstract::Patients with haemophilia A have seriously impaired thrombin generation due to an inherited deficiency of factor (F)VIII, making them form unstable fibrin clots that are unable to maintain haemostasis. Data on fibrin structure in haemophilia patients remain limited. Fibrin permeability, assessed by a flow measurement ...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:10.1160/TH13-06-0479
更新日期:2014-04-01 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::Integrins are cell surface adhesion receptors that participate in a variety of important processes throughout the vasculature. Here we summarize some recent findings on the regulation of integrin mediated cellular adhesion. Particular emphasis is placed on the regulation of integrin affinity for ligand (activation), a...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章,评审
doi:
更新日期:2001-07-01 00:00:00
abstract::Human tissue kallikrein-related peptidases are a family of 15 secreted serine proteases, located at chromosome 19q13.4. Most of them have been reported to be potential biomarkers for several carcinomas and other diseases. Human tissue kallikrein-related peptidase 7 (KLK7) has been purified from human stratum corneum a...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:
更新日期:2009-04-01 00:00:00
abstract::To assess interobserver variability of venography for screening for postoperative deep venous thrombosis (DVT), we used 185 bilateral ascending contrast venograms (366 lower limbs) which were performed using the long-leg film technique, in the frame of a trial of the efficacy of two low-molecular-weight-heparin fracti...
journal_title:Thrombosis and haemostasis
pub_type: 临床试验,杂志文章
doi:
更新日期:1993-10-18 00:00:00
abstract::The methylenetetrahydrofolate reductase (MTHFR) 677 C→T polymorphism may be associated with elevated total homocysteine (tHcy) levels, an independent risk factor for cardiovascular disease. It was the study objective to evaluate in vivo lipid peroxidation and platelet activation in carriers of the MTHFR 677 C→T polymo...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:10.1160/TH11-12-0899
更新日期:2012-09-01 00:00:00
abstract::The efficacy of conventional dose adjusted oral anticoagulation for stroke prevention in patients with non-valvular atrial fibrillation is well-documented but not considered ideal as primary antithrombotic treatment in elderly patients. The antithrombotic effect of fixed minidose warfarin 1.25 mg/day alone or in combi...
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:1997-05-01 00:00:00
abstract::Activated blood coagulation factor XIII has an important role in the final stage of the clotting cascade by the covalent crosslinking of alpha- and gamma-fibrin chains. We have recently shown that a functional polymorphism in exon 2. codon 34 of the FXIII A-subunit gene is protective against myocardial infarction. To ...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:
更新日期:1999-04-01 00:00:00
abstract::Computer-assisted oral anticoagulant dosage is being increasingly used to meet growing demands for oral anticoagulation. The DAWN AC is one of the most widely used computer-dosage programs. Evidence of its value and that of other computer programs has been based previously only on laboratory evidence of "time in targe...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章,多中心研究,随机对照试验
doi:
更新日期:2009-03-01 00:00:00
abstract::Bleeding and thrombotic disorders are major complications affecting patients with chronic kidney disease (CKD). Exposure of circulating platelets to uraemic toxins and contact with artificial surfaces during dialysis induce platelet abnormalities and alter the platelet proteome. We hypothesised that these changes may ...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:10.1160/TH12-03-0153
更新日期:2012-10-01 00:00:00
abstract::The antithrombotic effect of the thromboxane A2 receptor antagonist, vapiprost, was compared with those of other antiplatelet drugs using an arterial thrombosis model which utilized photochemical reaction in the rat femoral artery. Vapiprost prolonged the time required to occlude the artery with thrombus and inhibited...
journal_title:Thrombosis and haemostasis
pub_type: 杂志文章
doi:
更新日期:1992-10-05 00:00:00
abstract::Thirty-two patients with acute, proximal-vein thrombosis were treated with heparin and alteplase (0.25 versus 0.5 mg/kg/24 h during 3-7 days) in a randomized, double-blind, multicenter, European (ETTT) trial. The treatment resulted in a decrease of the venographic Marder's score from 18 (6-25) to 13 (2-24) units (medi...
journal_title:Thrombosis and haemostasis
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:
更新日期:1992-03-02 00:00:00