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Gaubius Instituut TNO (author), Ganesh, S. (author), Sier, C.F.M. (author), Heerding, M.M. (author), van Krieken, J.H.J.M. (author), Griffioen, G. (author), Welvaart, K. (author), van de Velde, C.J.H. (author), Verheijen, J.H. (author), Lamers, C.B.H.W. (author), Verspaget, H.W. (author)
Despite the advances in pre-, peri- andpost-operative medical care of colorectal carcinoma patients, the prognosis has improved only marginally over recent decades. Thus, additional prognostic indicators would be of great clinical value to select patients for adjuvant therapy. In previous studies we found that colorectal carcinomas have a marked...
article 1997
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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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de Bart, A.C.W. (author), Quax, P.H.A. (author), Löwik, C.W.G.M. (author), Verheijen, J.H. (author), TNO Preventie en Gezondheid (author)
Plasmin-mediated extracellular proteolysis has been implicated in the degradation of bone in normal and pathological conditions. Normal and malignant osteoblasts can produce both tissue-type plasminogen activator (t- PA) and urokinase-type plasminogen activator (u-PA). We have used the osteosarcoma cell line MG63 to address the question of...
article 1995
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van Hinsbergh, V.W.M. (author), van den Berg, E.A. (author), Fiers, W. (author), Dooijewaard, G. (author), Gaubius Instituut TNO (author)
Endothelial cells play an important role in the regulation of fibrinolysis by the production of several key regulatory proteins. The cytokines tumor necrosis factor (TNF), lymphotoxin, and interleukin-1 (IL-1), but not interleukin-6, increase the production of plasminogen activator inhibitor-1 (PAI-1) by endothelial cells, whereas they have no...
article 1990
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van Hinsbergh, V.W.M. (author), Kooistra, T. (author), Scheffer, M.A. (author), van Bockel, J.H. (author), van Muijen, G.N.P. (author), Gaubius Instituut TNO (author)
It has been reported that omental fat tissue is a good source of human microvascular endothelial cells. By characterization we demonstrate that the epithelioid cells isolated from omental tissue are not endothelial cells, but mesothelial cells. They contain abundant cytokeratins 8 and 18, which are absent in endothelial cells, and vimentin. No...
article 1990
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Quax, P.H.A. (author), van Leeuwen, R.T.J. (author), Verspaget, H.W. (author), Verheijen, J.H. (author), Gaubius Instituut TNO (author)
In 22 human tumor cell lines the regulation of production of plasminogen activators urokinase (u-PA) and tissue-type (u-PA) and their inhibitors PAI-1 and PAI-2 was studied. These four components may determine the net plasminogen activator activity, which is often associated with tumor development and metastatic processes. The amount of specific...
article 1990
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Gaubius Instituut TNO (author), 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)
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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Emeis, J.J. (author), van Houwelingen, A.C. (author), van den Hoogen, C.M. (author), Hornstra, G. (author), Gaubius Institute TNO, 2300 AP Leiden, Netherlands (author)
For a period of 6 weeks, 76 healthy male volunteers consumed during their daily main meal the contents of one tin (~ 135 g) of either fish (mackerel) paste or meat paste. Fibrinolytic parameters were determined in plasma samples obtained at the beginning and at the end of the experimental period. No changes were found in plasminogen, α2...
article 1989
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Brommer, E.J.P. (author), Derkx, F.H.M. (author), Schalekamp, M.A.D.H. (author), Dooijewaard, G. (author), Klaauw, V.D.M.M. (author), Gaubius instituut TNO (author)
In eight male patients with normal liver and kidney function fibrinolytic components were measured in arterial blood and in renal and hepatic vein blood, obtained during catheterization for analysis of hypertension. Blood samples were collected simultaneously from veins und corresponding arteries before and 5 minutes after the completion of...
article 1988
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Gaubius Institute TNO, 2313 AD Leiden, Netherlands (author), Bosma, P.J. (author), van den Berg, E.A. (author), Kooistra, T. (author), Siemieniak, D.R. (author), Slightom, J.L. (author)
We have determined the nucleotide sequence of the human plasminogen activator inhibitor-1 (PAI-1) gene and significant stretches of DNA which extend into its 5'- and 3'-flanking DNA regions; a total sequence of 15,867 base pairs (bp) is presented. The sequenced 5'-flanking DNA (1,520 bp) contains the essential eukaryotic cis-type proximal...
article 1988
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van Hinsbergh, V.W.M. (author), Sprengers, E.D. (author), Kooistra, T. (author), Gaubius Instituut TNO (author)
Human foreskin microvascular endothelial cells synthesize and release tissue-type plasminogen activator (t-PA) in similar amounts as do endothelial cells from umbilical cord artery and vein. Human thrombin increases the production of t-PA by these cells, which could be visualized from 8 h after addition of 0.1-5 units/ml thrombin by fibrin...
article 1987
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Sprengers, E.D. (author), Kluft, C. (author), Gaubius Instituut TNO (author)
Chemicals/CAS: fibrin, 9001-31-4; plasminogen activator inhibitor, 105844-41-5; plasminogen activator, 9039-53-6; Carrier Proteins; Glycoproteins; Plasminogen Activators, EC 3.4.21.-; Plasminogen Inactivators; Protease Inhibitors; protease-nexin
article 1987
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Gaubius instituut TNO (author), Kooistra, T. (author), van den Berg, J. (author), Tons, A. (author), Platenburg, G. (author), Rijken, D.C. (author), van den Berg, E.A. (author)
Incubation of cultured human endothelial cells with 5-mM-dibutyryl cyclic AMP led to an approx. 2-fold increase in tissue-type plasminogen-activator (t-PA) production over a 24 h incubation period. The stimulating effect of dibutyryl cyclic AMP could be explained by the slow liberation of butyrate, as the effect could be reproduced by addition...
article 1987
document
Gaubius instituut TNO (author), Kooistra, T. (author), Sprengers, E.D. (author), van Hinsbergh, V.W.M. (author)
In conditioned medium (CM) from cultured human endothelial cells, two forms of plasminogen-activator inhibitor (PA-inhibitor) can be demonstrated: a fast-acting active form and an immunologically related, inactive form. Evidence is presented that endothelial cells produce active PA-inhibitor which is rapidly inactivated upon secretion into the...
article 1986
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van Hinsbergh, V.W.M. (author), Bertina, R.M. (author), van Wijngaarden, A. (author), van Tilburg, N.H. (author), Emeis, J.J. (author), Haverkate, F. (author), Gaubius instituut TNO (author)
Confluent cultures of endothelial cells from human umbilical cord were used to study the effect of activated human protein C (APC) on the production of plasminogen activators, plasminogen activator-inhibitor, and factor VIII-related antigen. Addition of APC to the cells in a serum-free medium did not affect the production of tissue-type...
article 1985
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Verheijen, J.H. (author), Chang, G.T.G. (author), Kluft, C. (author), Gaubius Instituut TNO (author)
Human plasma contains a fast-acting t-PA inhibitor, which is not identical with ??2-antiplasmin or ??2-macroglobulin. The concentration of this inhibitor in normal plasma is highly variable, much lower than that of known plasma protease inhibitors, and in the range of physiologically occurring plasma concentrations of t-PA (0-2 IU/ml). The...
article 1984
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Rijken, D.C. (author), Wijngaards, G. (author), Zaal-de Jong, M. (author), Welbergen, J. (author), Gaubius instituut TNO (author)
A procedure was developed for the purification of a plasminogen activator from human uterine tissue. It involves six consecutive steps: extraction of the plasminogen activator from delipidated uterine tissue with 0.3 M potassium acetate buffer, pH 4.2; ammonium sulphate precipitation; zinc chelate-agarose chromatography; n-butyl-agarose...
article 1979
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