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 "in vivo" release of lysosomes. We have studied the release of platelet lysosomal contents "in vivo" in healthy volunteers at a localized site of platelet activation by measuring markers of lysosomal secretion in the blood oozing from a skin wound inflicted for the measurement of the bleeding-time. The levels of beta-N-acetylhexosaminidase (Hex) were 13.1 +/- 0.85 mU/ml in bleeding-time blood and 10.2 +/- 0.66 mU/ml in plasma (p <0.001). Hex in serum was 16.4 +/- 0.72 mU/ml. The levels of beta-galactosidase were also higher in bleeding-time blood than in plasma (0.85 +/- 0.07 mU/ml vs 0.4 +/- 0.05 mU/ml, p <0.001). In bleeding-time blood collected at one minute intervals, Hex rose progressively consistent with ongoing platelet activation and flow-cytometry showed a progressive increase of the expression of LIMP and LAMP-2, two lysosomal associated proteins. In conclusion, our data demonstrate that platelet lysosomal glycohydrolases are released "in vivo" in humans upon platelet activation.
journal_name
Thromb Haemostjournal_title
Thrombosis and haemostasisauthors
Ciferri S,Emiliani C,Guglielmini G,Orlacchio A,Nenci GG,Gresele Pkeywords:
subject
Has Abstractpub_date
2000-01-01 00:00:00pages
157-64issue
1eissn
0340-6245issn
2567-689Xpii
00010157journal_volume
83pub_type
杂志文章abstract：:Anticoagulant control facilities are being overwhelmed by requests for monitoring and large numbers of patients are not therefore receiving treatment. Procedures designed for point-of-care testing have therefore been developed, the most popular being the CoaguChek. The need for external quality assessment (EQA) of mon...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章,多中心研究
doi：10.1160/TH09-10-0683
更新日期：2010-05-01 00:00:00
abstract：:Factor XI (FXI) plays a dual role in haemostasis and thrombosis. It contributes to thrombin generation and promotes inhibition of fibrinolysis. Severe FXI deficiency was shown to confer protection against arterial and venous thrombosis in animal models without compromising haemostasis. We have previously shown that pa...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH10-05-0307
更新日期：2011-02-01 00:00:00
abstract：:The influence of the sympathetic nervous system on platelet functions in vivo is still controversial. The aims of our study were to compare the response to various sympathetic stimuli in normal subjects and in patients with essential hypertension (HT) or peripheral vascular disease (PVD) and to evaluate any correlatio...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1990-06-28 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：: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：:Although there is considerable variability of platelet reactivity among patients treated with clopidogrel, little is known about inter-individual differences and possible role of proton pump inhibitors (PPIs) after prasugrel. We defined the extent of inter-patient variability, and evaluated the impact of PPI interacti...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章,多中心研究
doi：10.1160/TH11-09-0622
更新日期：2012-02-01 00:00:00
abstract：:Coronary artery disease (CAD) is a multifactorial disease, and family history is the best available tool to assess gene-environment interaction. This study addressed the heritability of quantitative traits, namely lipid, coagulation/fibrinolysis and pro-inflammatory markers in the ongoing family-based Indian Atheroscl...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH08-01-0018
更新日期：2009-08-01 00:00:00
abstract：:Catabolism of coagulation factor VIII (FVIII) is mediated by low-density lipoprotein receptor-related protein (LRP). The ligand-binding sites of LRP are formed by complement-type repeats (CR), and CR clusters II and IV bind most of LRP ligands. FVIII contains two major LRP-binding sites located in the A2 and A3 domain...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2007-12-01 00:00:00
abstract：:Platelet activation plays a pivotal role in physiological hemostasis and pathological thrombosis causing heart attack and stroke. Previous studies conclude that simultaneous activation of Gi and G12/13 signaling pathways is sufficient to cause platelet aggregation. However, using Gq knockout mice and Gq-specific inhib...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1055/s-0040-1714745
更新日期：2020-11-01 00:00:00
abstract：BACKGROUND:Paravalvular aortic regurgitation (PVAR) remains a frequent postprocedural concern following transcatheter aortic valve replacement (TAVR). Persistence of flow turbulence results in the cleavage of high-molecular-weight von Willebrand multimers, primary haemostasis dysfunction and may favour bleedings. Recen...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1055/s-0038-1639352
更新日期：2018-05-01 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：:A procedure for using citrated fresh plasmas for International Sensitivity Index (ISI) calibration of two types of whole blood point-of-care test (POCT) prothrombin time (PT) monitor systems has been assessed in a multicentre study. The CoaguChek Mini and TAS PT-NC systems gave higher ISI with whole blood samples than...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章,多中心研究
doi：
更新日期：2002-05-01 00:00:00
abstract：OBJECTIVE: Blood monocyte subsets are emerging as biomarkers of cardiovascular inflammation. However, our understanding of human monocyte heterogeneity and their immunophenotypic features under healthy and inflammatory conditions is still evolving. RATIONALE: In this study, we sought to investigate the immunophenome o...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1055/s-0039-1700871
更新日期：2020-01-01 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：:Hypercoagulability may increase the risk of cardiovascular disease (CVD) in diabetic patients with albuminuria. Plasma thrombin-anti-thrombin III complex (TAT) levels, representing a functional state of clotting system, were studied in one hundred and fifteen non-insulin-dependent diabetic (NIDDM) patients. The patien...
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：1995-11-01 00:00:00
abstract：:We have recently demonstrated that the proinflammatory cytokine, interleukin-6 (IL-6), could upregulate the production of protein S in the human hepatoma cell line, HepG-2, but not in endothelial cells. In this study, we have demonstrated that the combination of exogenous IL-6 and soluble IL-6 receptor (sIL-6R) could ...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1997-05-01 00:00:00
abstract：:Thrombolytic therapy provides clinical benefit in patients with vascular occlusions, depending upon the organ or limb that is threatened. The impact of therapeutic intervention varies from the quiet alteration of the course of deep vein thrombosis, for which non-life threatening post-phlebitic syndrome can be largely ...
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：:This study was undertaken to appraise the application of those reagents most widely used in the UK for the detection and confirmation of lupus anticoagulant (LA) on an Amelung KC4A and a Sysmex CA-6000 coagulometer. Five sets of dilute Russell's viper venom time (DRVVT) reagents were assessed as well as the Textarin-P...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1999-05-01 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：:There is much debate over the appropriateness of prescribing prolonged anticoagulation to heterozygous carriers of factor V Leiden suffering a first episode of deep vein thrombosis (DVT). We, thus used meta-analysis to estimate from six eligible studies the summary odds-ratio of recurrent DVT in carriers of factor V L...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2000-11-01 00:00:00
abstract：:Mammalian urokinase-type plasminogen activator (uPA) is produced as a stable single polypeptide chain zymogen and requires a distinct proteolytic cleavage to become an active, two-chain enzyme. In contrast, chicken uPA, both native and recombinant, is found predominantly as a two-chain, active enzyme even in the absen...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2003-02-01 00:00:00
abstract：BACKGROUND: Evaluation of thromboembolic risk is essential in anticoagulated atrial fibrillation (AF) patients. The CHA2DS2-VASc score is largely validated and recommended by most guidelines. The GARFIELD-AF Stroke score has been proposed as an alternative risk score. METHODS: We analyzed warfarin-treated patients fro...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1055/a-1333-4448
更新日期：2020-12-09 00:00:00
abstract：:Data on anti-platelet therapy (APT) for prevention of atherothrombotic events in thrombocytopaenic cancer patients is lacking. We aimed to identify patient and physician characteristics associated with APT management in thrombocytopaenic patients with haematological malignancy. A clinical vignette-based experiment was...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1055/s-0038-1676520
更新日期：2019-01-01 00:00:00
abstract：:Our initial finding that CD40- and CD40 ligand (CD40L)-deficient mice displayed prolonged tail bleeding and platelet function analyzer (PFA-100) closure times prompted us to further investigate the role of the CD40-CD40L dyad in primary hemostasis and platelet function. Recombinant human soluble CD40L (rhsCD40L), chem...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH04-12-0774
更新日期：2005-06-01 00:00:00
abstract：:Adhesion of rat blood platelets to native rat tail collagen fibrils was studied in the electron microscope under conditions that preserved collagen-associated proteoglycans (CAPG). The CAPG molecules were aligned in chain-like configurations that encircled the fibrils with a 65 nm period; they appeared to coat the fib...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1987-08-04 00:00:00
abstract：:Light to moderate drinking is associated with lower risk of coronary heart (CHD) than non-drinkers. We have examined the relationships between total alcohol intake and type of alcoholic beverage and several potential biological mechanisms. We carried out the study in 3158 men aged 60-79 years drawn from general practi...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：10.1160/TH03-04-0221
更新日期：2003-12-01 00:00:00
abstract：:Inherited thrombophilia has been shown to be linked with fetal loss. We performed a case-control study on the association between thrombosis-related polymorphisms in the factor V (FV) gene (Leiden, Cambridge, Hong Kong; HR2 haplotype) and idiopathic recurrent pregnancy loss (RPL) in Tunisian women. A total of 348 wome...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：2006-04-01 00:00:00
abstract：:We investigated the prevalence of the new recently reported mutation in the prothrombin gene (20210 A) in a sample of 116 unrelated patients with venous thromboembolism. We found 20 heterozygous carriers (17.2%, CI 95% 10.4-21.1). In comparison, we observed 13 carriers among 201 healthy unmatched controls (6.5%, CI 3....
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1998-09-01 00:00:00
abstract：:Amniotic fluid inhibited the fibrinolytic, amidolytic and esterolytic activity of urokinase. Kinetic studies with AGLMe demonstrated non-competitive inhibition. A major part of the inhibitory activity could be separated from alpha 1-antitrypsin by ion-exchange chromatography on DEAE-Sephadex A-50. Plasminogen activato...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1980-08-29 00:00:00
abstract：:Thromboembolism remains a serious problem in patients with prosthetic heart valves. Previous studies documented a number of platelet abnormalities in such patients and correlated the occurrence of thromboembolic complications with short platelet survival. We have studied platelet survival and platelet aggregation in e...
journal_title：Thrombosis and haemostasis
pub_type： 杂志文章
doi：
更新日期：1984-10-31 00:00:00
