Searched for: subject%3A%22Fibrinolysis%22
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Clason, S.B. (author), Meijer, P. (author), Kluft, C. (author), Ersdal, E. (author), Gaubius Instituut TNO (author)
A new automated method, COAMATIC® Plasmin Inhibitor, provides a tool for specific determination of Plasmin Inhibitor activity in plasma. The method is adapted to the ACL 300R, Cobas Mira, MLA 1000C and to the Thrombolyzer. Low plasmin concentrations combined with short incubation times ensure good specificity also in the low range, resulting in...
article 1996
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Rijken, D.C. (author), Jie, A.F.H. (author), Gaubius Laboratory TNO Preventie en Gezondheid (author)
Reteplase is a protein consisting of the kringle-2 and protease domains of tissue-type plasminogen activator (t-PA). Because intravenous heparin will be used as an adjunct to thrombolytic therapy with reteplase, we investigated the interactions in vitro between heparin and reteplase as well as between heparin and recombinant t-PA (alteplase) as...
article 1996
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Iacoviello, L. (author), di Castelnuovo, A. (author), de Knijff, P. (author), d' Orazio, A. (author), Amore, C. (author), Kluft, C. (author), Donati, M.B. (author), Gaubius Instituut TNO (author)
Several authors have suggested that increased t-PA antigen levels were associated to thrombotic events in coronary, cerebral and peripheral arteries. Baseline and stimulated levels of t-PA in plasma appear highly heritable, therefore, it could be of interest to evaluate the role of genetic variations in the t-PA locus in determining its plasma...
article 1996
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Kluft, C. (author), Meijer, P. (author), Gaubius Laboratory, TNO-PG, Leiden, Netherlands TNO Preventie en Gezondheid (author)
Procedures of blood collection and handling can be different for the various variables in fibrinolysis. Some of them may require adaptation to the progress in assay methodology and in biochemical and physiological knowledge. During the Leiden Fibrinolysis Workshop 6 in 1996, the procedures described in 1990 for tissue-type plasminogen activator ...
article 1996
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Sitter, T. (author), Gödde, M. (author), Spannagl, M. (author), Fricke, H. (author), Kooistra, T. (author), Gaubius Instituut TNO (author)
We used continuous peritoneal dialysis (CAPD) as a model to study intraperitoneal fibrin turnover during peritonitis. Activation markers of coagulation and fibrinolysis including prothrombin fragment F1+2 (F1+2), thrombin antithrombin III complex (TAT), fibrin monomer (FM), and fibrin degradation products (FbDP) were measured in the peritoneal...
article 1996
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Ronday, H.K. (author), Breedveld, F.C. (author), Verheijen, J.H. (author), Gaubius Instituut TNO (author)
article 1996
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Huisman, L.G.M. (author), van Griensven, J.M.T. (author), Kluft, C. (author), TNO Preventie en Gezondheid (author)
Standardisation of t-PA antigen and activity assays requires a t-PA standard which ideally is a single preparation suitable for all assays. Most t-PA preparations, however, are not homogeneous; they can contain several forms of t-PA: single-chain and two-chain t-PA, and two glycoforms (I and II). In this study, the behaviour of Actilyse...
article 1996
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Meijer, P. (author), van der Ham, F. (author), Kluft, C. (author), Gaubius Laboratory TNO Preventie en Gezondheid (author)
The use of Stabilyte® plasma in the Coaliza® t-PA, Coaliza® PAI-1 and Enzygnost® PAP micro was evaluated. For PAI-1 antigen no, for t-PA antigen only small differences were observed between measurements in citrate and Stabilyte® plasma. For PAP-complexes significant lower (72%) results were obtained when Stabilyte® plasma was applied. This is...
article 1996
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Hanemaaijer, R. (author), Visser, H. (author), van den Hoogen, C.M. (author), Sorsa, T. (author), van Hinsbergh, V.W.M. (author), Gaubius Laboratory Dept. of Periodontology, Univ. of Helsinki, Helsinki, Finland TNO Preventie en Gezondheid (author)
Degradation and remodelling of the extracellular matrix is an essential feature in many pathophysiological processes, especially in invasive and angiogenesis-related diseases. At least two families of proteolytic enzymes have been suggested to play a role in this process: matrix metalloproteinases (MMPs) and plasminogen activators, in particular...
article 1996
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Biasucci, L.M. (author), de Maat, M.P.M. (author), Meo, A. (author), van der Greet, W. (author), Summaria, F. (author), Quaranta, G. (author), Liuzzo, G. (author), Kluft, C. (author), Maseri, A. (author), Gaubius Instituut TNO (author)
In order to investigate the role of the hemostatic, fibrinolytic and inflammatory system in unstable angina, we assessed the levels of thrombin-antithrombin III (TAT), Prothrombin Fragment 1+2 (F1+2), plasmin-antiplasmin (PAP) and D-Dimer (DD) and of C-reactive protein (CRP) in 51 patients admitted to our CCU with severe unstable angina. Thirty...
article 1996
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Lansink, M. (author), Kooistra, T. (author), Gaubius Laboratory, Leiden, Netherlands Gaubius Laboratory TNO-PG, P.O. Box 2215, 2301 CE Leiden, Netherlands TNO Preventie en Gezondheid (author)
We previously showed the involvement of retinoic acid receptor α (RARα) in the induction of tissue-type plasminogen activator (t-PA) synthesis by RA in human umbilical vein endothelial cells (HUVECs). However, the rather slow onset of this induction of t-PA synthesis suggested an indirect role of RARα. Here, we show that the protein synthesis...
article 1996
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Meijer, P. (author), Kluft, C. (author), Gaubius Laboratory TNO Preventie en Gezondheid (author)
Test procedures of several commercially available functional test kits for α2-antiplasmin were investigated. The importance of the plasmin concentration, the amount of plasma used in the test and the preincubation time for a specific test for the determination of α2-antiplasmin were discussed. A Specific Plasmin Inhibition Test (SPIT) suitable...
article 1996
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van der Bom, J.G. (author), Bots, M.L. (author), Haverkate, F. (author), Grobbee, D.E. (author), Kluft, C. (author), Gaubius Instituut TNO (author)
article 1996
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Gaubius Instituut TNO (author), Sakharov, D.V. (author), Lijnen, H.R. (author), Rijken, D.C. (author)
Staphylokinase (STA), a protein of bacterial origin, induces highly fibrin-specific thrombolysis both in human plasma in vitro and in pilot clinical trials. Using fluorescence microscopy, we investigated the spatial distribution of fluorescein isothiocyanate (FITC)-labeled STA during lysis of a plasma clot and its binding to purified fibrin...
article 1996
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TNO Preventie en Gezondheid Gaubius Instituut TNO (author), Sakharov, D.V. (author), Nagelkerkel, J.F. (author), Rijken, D.C. (author)
Binding of components of the fibrinolytic system to fibrin is important for the regulation of fibrinolysis. In this study, decomposition of the fibrin network and binding of plasminogen and plasminogen activators (PAs) to fibrin during lysis of a plasma clot were investigated with confocal microscopy using fluorescein-labeled preparations of...
article 1996
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Haverkate, F. (author), Samama, M. (author), TNO Preventie en Gezondheid (author)
Approximately 250 cases of dysfibrinogenemia have been reported; 55% were asymptomatic (detected by chance), 25% had a tendency to bleeding, and 20% were reported to have a tendency to thrombosis. To establish a possible association between familial dysfibrinogenemia and thrombophilia, data on cases with both affections were collected in a study...
article 1995
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Velthuis-te Wierik, E.J.M. (author), Meijer, P. (author), Kluft, C. (author), van den Berg, H. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
Impaired fibrinolytic activity has been reported in the elderly and is thought to play a role in the etiology of cardiovascular disease, one of the leading causes of death in most Western countries. Since restriction of energy intake has been demonstrated to act beneficially on the aging process in a variety of species, we studied the effect of...
article 1995
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van Boheemen, P.A. (author), van den Hoogen, N.M. (author), Koolwijk, N. (author), Instituut voor Verouderings- en Vaatziekten Onderzoek TNO (author)
Six murine monoclonal antibodies (MAbs) specific for urokinase-type plasminogen activator (u-PA) were tested for their ability to inhibit u-PA activity in three different assays with respect to amidolytic activity, plasminogen activation and fibrinolytic activity. Two of the MAbs were able to inhibit the amidolytic activity of u-PA. One MAb (LMW...
article 1995
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Schrauwen, Y. (author), de Vries, R.E.M. (author), Kooistra, T. (author), Emeis, J.J. (author), TNO Preventie en Gezondheid (author)
The acute release of t-PA was studied in vitro in human endothelial cells from different origin. It proved possible to enhance the amounts of t-PA which can be released by increasing t-PA synthesis, both in vitro, and in vivo in rats. These data suggest the feasibility to induce and (or) enhance acute release of t-PA in man. Chemicals/CAS:...
article 1994
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Meijer, P. (author), Westerveld, W. (author), Huisman, L.G.M. (author), Gaubius Laboratory TNO Preventie en Gezondheid (author)
Comparison of the results for α2-antiplasmin activity of plasma samples (n = 61, range 0-125%) obtained by the 'immediate plasmin inhibition test' (IPIT) and by the automated method for the MLA Electra 1000C of Dade® shows a good correlation (R = 0.935) but a systematic disagreement especially relevant in the range below 40%. An improved method...
article 1994
Searched for: subject%3A%22Fibrinolysis%22
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