Searched for: subject:"Animals"
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Padro, T. (author), Quax, P.H.A. (author), van den Hoogen, C.M. (author), Roholl, P. (author), Verheijen, J.H. (author), Emeis, J.J. (author), Gaubius Instituut TNO (author)
Plasminogen activator (PA) and PA inhibitor (PAI) antigen, activity, and mRNA were analyzed in the three layers of rat aorta, and the effect of endotoxin on PA and PAI was studied. All PA activity in aorta was identified as tissue-type PA (TPA) activity; no urokinase-type PA was detected. In the tunica adventitia TPA activity, TPA antigen, and...
article 1994
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Padró, T. (author), van den Hoogen, C.M. (author), Emeis, J.J. (author), Instituut voor verouderings- en vaatziekten onderzoek TNO (author)
The aim of the present study was to investigate whether hypothyroidism would affect the components of the rat plasma fibrinolytic system. Hypothyroidism was induced by feeding rats a thiouracil-containing diet for 2 weeks. During this period, half of the animals received subcutaneous injections of L-thyroxine (20 μg/kg daily) to restore thyroid...
article 1993
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Emeis, J.J. (author), Jirouskova, M. (author), Muchitsch, E.-M. (author), Shet, A.S. (author), Smyth, S.S. (author), Johnson, G.J. (author), TNO Preventie en Gezondheid (author)
Murine blood coagulation factors and function are quite similar to those of humans. Because of this similarity and the adaptability of mice to genetic manipulation, murine coagulation factors and inhibitors have been extensively studied. These studies have provided significant insights into human hemostasis. They have also provided useful...
article 2007
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Emeis, J.J. (author), Eijnden van den - Schrauwen, Y. (author), van den Hoogen, C.M. (author), de Priester, W. (author), Westmuckett, A. (author), Lupu, F. (author), Gaubius Instituut TNO (author)
In previous studies we have shown that, after stimulation by a receptor ligand such as thrombin, tissue-type plasminogen activator (tPA) and von Willebrand factor (vW(f)) will be acutely released from human umbilical vein endothelial cells (HUVEC). However, the mechanisms involved in the secretion of these two proteins differ in some respects,...
article 1997
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Lansink, M. (author), Jong, M. (author), Bijsterbosch, M. (author), Bekkers, M. (author), Toet, K. (author), Havekes, L. (author), Emeis, J. (author), Kooistra, T. (author), Gaubius instituut TNO (author)
Several clinical studies have demonstrated an inverse relationship between circulating levels of estrogen and tissue-type plasminogen activator (t-PA). The present study was designed to test the hypothesis that estrogen lower plasma levels of t-PA by increasing its clearance from the bloodstream. 17α-Ethinyl estradiol (EE) treatment resulted in...
article 1999
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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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Emeis, J.J. (author), van den Hoogen, C.M. (author), Gaubius Laboratory IVVO-TNO, P.O. Box 430, 2300 AK Leiden, Netherlands Instituut voor verouderings- en vaatziekten onderzoek TNO (author)
Pharmacological modulation of the in vivo induction of plasminogen activator inhibitor type-1 (PAI-1) synthesis was studied in rats using the induction of PAI-1 by endotoxin as a model system. Both the cyclooxygenase inhibitors acetylsalicylic acid and indomethacin enhanced PAI-1 induction. The combined cyclooxygenase-lipoxygenase inhibitor,...
article 1992
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Gijbels, M.J.J. (author), van der Cammen, M. (author), van der Laan, L.J.W. (author), Emeis, J.J. (author), Havekes, L.M. (author), Hofker, M.H. (author), Kraal, G. (author), Gaubius instituut TNO (author)
Apolipoprotein E3-Leiden (APOE3-Leiden) transgenic mice develop hyperlipidemia and are highly susceptible to diet-induced atherosclerosis. We have studied the progression and regression of atherosclerosis using immunohistochemistry. Female transgenic mice were fed a moderate fat diet to study atherosclerosis over a longer time period. Fatty...
article 1999
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van Pelt Verkuil, E. (author), Emeis, J.J. (author), Gaubius instituut TNO (author)
Immunohistochemically, coagulation F-VIII-R:AG in vascular endothelial cells can be demonstrated with antihuman F-VIII-R:AG antisera after fixation with 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide, using both peroxidase and fluorescence techniques. The generally used aldehyde containing fixatives, result in a loss of immunoreactivity....
article 1981
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Lupu, C. (author), Goodwin, C.A. (author), Westmuckett, A.D. (author), Emeis, J.J. (author), Scully, M.F. (author), Kakkar, V.V. (author), Lupu, F. (author), Gaubius Instituut TNO (author)
Tissue factor pathway inhibitor (TFPI), the main downregulator of the procoagulant activity of tissue factor·factor VIIa complex, locates in human endothelial cells (EC) in culture as well-defined clusters uniformly distributed both on the cell surface and intracellularly. We here demonstrate by immunofluorescence that TFPI colocalizes in EC...
article 1997
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Quax, P.H.A. (author), van den Hoogen, M. (author), Verheijen, J.H. (author), Padro, T. (author), Zeheb, R. (author), Gelehrter, T.D. (author), van Berkel, T.J.C. (author), Kuiper, J. (author), Emeis, J.J. (author), Gaubius Instituut TNO (author)
The tissue-specific distribution of tissue-type and urokinase-type plasminogen activator (t-PA and u-PA) and their inhibitor type 1 (PAI-1) was analyzed at mRNA level in five major rat organ tissues. t-PA mRNA was detected in lung, kidney, heart, and liver. u-PA mRNA was detected in kidney and lung. Presence of PA mRNA correlated with the...
article 1990
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Zadelaar, A.S.M. (author), Boesten, L.S.M. (author), Jukema, J.W. (author), van Vlijmen, B.J.M. (author), Kooistra, T. (author), Emeis, J.J. (author), Lundholm, E. (author), Camejo, G. (author), Havekes, L.M. (author), Gaubius Instituut TNO (author)
OBJECTIVE - We investigated whether the dual PPARα/γ agonist tesaglitazar has anti-atherogenic effects in ApoE*3Leiden mice with reduced insulin sensitivity. METHODS AND RESULTS - ApoE*3Leiden transgenic mice were fed a high-fat (HF) insulin-resistance-inducing diet. One group received a high-cholesterol (HC) supplement (1% wt/wt; HC group). A...
article 2006
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Delsing, D.J.M. (author), Jukema, J.W. (author), van de Wiel, M.A. (author), Emeis, J.J. (author), van der Laarse, A. (author), Havekes, L.M. (author), Princen, H.M.G. (author), Gaubius Instituut TNO (author)
This study was designed to investigate the potential antiatherosclerotic effects of the calcium antagonist amlodipine as compared with the HMG-CoA reductase inhibitor atorvastatin and the combination of both in ApoE*3-Leiden transgenic mice. Four groups of 15 ApoE*3-Leiden mice were put on a high-cholesterol diet. One group received 0.002% (wt...
article 2003
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van Nieuw Amerongen, G.P. (author), Vermeer, M.A. (author), Negre-Aminou, P. (author), Lankelma, J. (author), Emeis, J.J. (author), van Hinsbergh, V.W.M. (author), Gaubius Instituut TNO (author)
Background - Recent clinical trials have established that inhibitors of the enzyme 3-hydroxy-3-methylglutaryl coenzyme A reductase (statins) reduce the risk of acute coronary events. These effects of statins cannot be fully explained by their lipid-lowering potential. Improved endothelial function may contribute to the positive effects of statin...
article 2000
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Wasser, M.N.J.M. (author), Koppert, P.W. (author), Arndt, J.W. (author), Emeis, J.J. (author), Feitsma, R.I.J. (author), Pauwels, E.K.J. (author), Nieuwenhuizen, W. (author), Gaubius Instituut TNO (author)
Balb/c mice were immunized with human plasmin-generated fibrinogen degradation product Y. Spleen cells were fused with P3X63-Ag8.653 myeloma cells. A clone (Y22) was found that produces monoclonal antibodies (MoAbs) with a strong reactivity with human fibrin and only a weak reactivity with fibrinogen in an enzyme immunoassay (EIA). Y22 also...
article 1989
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van Hinsbergh, V.W.M. (author), Kooistra, T. (author), van den Berg, E.A. (author), Princen, H.M.G. (author), Fiers, W. (author), Emeis, J.J. (author), Gaubius instituut TNO (author)
The vascular endothelium plays an important role in fibrinolysis by producing tissue-type plasminogen activator (t-PA) and plasminogen activator inhibitor (PAI). The monokine tumor necrosis factor (human recombinant TNF) increased the production of PAI by cultured human endothelial cells from umbilical vein (twofold) and from foreskin...
article 1988
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Trion, A. (author), de Maat, M.P.M. (author), Jukema, J.W. (author), van der Laarse, A. (author), Maas, M.C. (author), Offerman, E.H. (author), Havekes, L.M. (author), Szalai, A.J. (author), Princen, H.M.G. (author), Emeis, J.J. (author), TNO Kwaliteit van Leven (author)
Objective - C-reactive protein (CRP) has been associated with risk of cardiovascular disease. It is not clear whether CRP is causally involved in the development of atherosclerosis. Mouse CRP is not expressed at high levels under normal conditions and increases in concentration only several-fold during an acute phase response. Because the...
article 2005
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van Pelt-Verkuil, E. (author), van de Ree, P. (author), Emeis, J.J. (author), Gaubius Institute TNO, 2300 AP Leiden, Netherlands (author)
The effects of lowering plasma fibrinogen levels by Arvin injections have been investigated in a rat model of arteriosclerosis. In this model air-drying-induced endothelial denudation of the left carotid artery results in myointimal lesion development. Arvin (2 x 50 Units/kg) was given at 4 and 2 hours prior to surgery, reducing plasma...
article 1989
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Tranquille, N. (author), Emeis, J.J. (author), Gaubius Instituut TNO (author)
The acute release of tissue-type plasminogen activator (t-PA) was studied in perfused rat hindlegs. Pretreatment of rats with the protein synthesis inhibitor cycloheximide (2 mg/kg) at 1, 3 or 5 h prior to perfusion of rat hindlegs did not influence the amount of t-PA released by platelet-activating factor (20 nM) or bradykinin (1 μM). The...
article 1989
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Schultze, A.E. (author), Emeis, J.J. (author), Roth, R.A. (author), Gaubius Instituut TNO (author)
The monocrotaline pyrrole (MCTP)-treated rat is a useful model for the study of certain chronic pulmonary vascular diseases. A single, i.v. administration of a low dose of MCTP causes pneumotoxicity, pulmonary vascular remodeling, sustained increases in pulmonary arterial pressure, and right ventricular hypertrophy in rats. The pulmonary...
article 1996
Searched for: subject:"Animals"
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