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Offersen, B.V. (author), Knap, M.M. (author), Horsman, M.R. (author), Verheijen, J. (author), Hanemaaijer, R. (author), Overgaard, J. (author), TNO Kwaliteit van Leven (author)Introduction. Matrix metalloproteinase 9 (MMP-9) is an endopeptidase involved in various cellular processes, such as tumour development and metastatic spread. In biological samples, MMP-9 can occur as pro-MMP-9 and active MMP-9, or these factors complexed with the inhibitor TIMP-1. An assay, which can measure active and total MMP-9 in biological...article 2010
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TNO Kwaliteit van Leven (author), Sluijter, J.P.G. (author), Pulskens, W.P.C. (author), Schoneveld, A.H. (author), Velema, E. (author), Strijder, C.F. (author), Moll, F. (author), de Vries, J.P. (author), Verheijen, J. (author), Hanemaaijer, R. (author), de Kleijn, D.P.V. (author), Pasterkamp, G. (author)Background and Purpose - We studied matrix metalloproteinases (MMP) 2, 8, and 9 and extracellular matrix metalloproteinase inducer (EMMPRIN) levels in relation to carotid atherosclerotic plaque characteristics. Methods - Carotid atherosclerotic plaques (n=150) were stained and analyzed for the presence of collagen, smooth muscle cell (SMC), and...article 2006
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van der Laan, W. (author), Molenaar, E. (author), Ronday, K. (author), Verheijen, J. (author), Breedveld, F. (author), Greenwald, R. (author), Dijkmans, B. (author), Tekoppele, J. (author), Gaubius instituut TNO (author)Objective. To investigate the effects of doxycycline on disease activity and joint destruction in patients with rheumatoid arthritis (RA). Methods. A 36 week double blind, placebo controlled crossover trial was conducted. Patients (n = 66) received 50 mg doxycycline or placebo twice a day during 12, 24, or 36 weeks. Patient assessments were...article 2001
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Capper, S. (author), Evans, V. (author), Hanemaaijer, R. (author), Sully, M. (author), Verheijen, J. (author), Visser, H. (author), Gaubius instituut TNO (author)Gelatinase-B has been shown to be produced by a variety of different cells, fibroblasts in particular. It has also been shown to be elevated in the sera of patients with specific disease states, for example hepatocellular carcinoma. A novel technology is described for determining the activity of matrix metalloproteinases (MMPs) using a...article 1999
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Koopman, J. (author), Maas, A. (author), Rezaee, F. (author), Havekes, L. (author), Verheijen, J. (author), Gijbels, M. (author), Haverkate, F. (author), Gaubius Instituut TNO (author)Atherosclerosis is a multifactorial disease that is influenced by both genetic and environmental factors. Recent epidemiological studies have shown that the combination of elevated VLDL/LDL concentrations and elevated fibrinogen levels results in a strong increase of the risk for cardiovascular disease as compared to the individual risk factors....article 1997
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Gaubius Instituut TNO (author), Verheijen, J. (author), Visser, H. (author), Konttinen, Y. (author), Verspaget, H. (author), Duffy, J. (author), Hanemaaijer, R. (author)Here we describe a new principle to assess specifically the activity of the different members of the human matrix-metalloproteinase family (MMPs) by a colorimetric assay. Using protein engineering a modified pro-urokinase has been made in which the activation sequence, normally recognized by plasmin (PRFK IIGG) has been replaced by a sequence...article 1997
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Koopman, J. (author), Havekes, L. (author), Verheijen, J. (author), Gijbels, M. (author), Haverkate, F. (author), Gaubius Laboratory TNO Preventie en Gezondheid (author)Atherosclerosis is a multifactorial disease that is influenced by both genetic and environmental factors. Recent epidemiological studies have shown that the combination of elevated VLDL/LDL concentrations and elevated fibrinogen levels results in a strong increase of the risk for cardiovascular disease as compared to the individual risk factors....article 1996
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- Gezondheidsorganisatie TNO Gaubius Instituut TNO (author), van Haverkate, F. (author), Kortmann, C. (author), Verheijen, J. (author), Thompson, S.G. (author) conference paper 1987
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- Verspaget, H. (author), Griffioen, G. (author), van Duijn, W. (author), Chang, G. (author), Verheijen, J. (author), Gaubius Instituut TNO (author) article 1985