Searched for: subject%3A%22Proteoglycans%22
(1 - 20 of 32)

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Vos, P.A.J.M. (author), Mastbergen, S.C. (author), Huisman, A.M. (author), de Boer, T.N. (author), de Groot, J. (author), Polak, A.A. (author), Lafeber, F.P.J.G. (author)
Objectives: Age is the most prominent predisposition for development of osteoarthritis (OA). Age-related changes of articular cartilage are likely to play a role. Advanced glycation endproducts (AGEs) accumulate in cartilage matrix with increasing age and adversely affect the biomechanical properties of the cartilage matrix and influence...
article 2012
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Vos, P.A.J.M. (author), Degroot, J. (author), Barten-Van Rijbroek, A.D. (author), Zuurmond, A.-M. (author), Bijlsma, J.W.J. (author), Mastbergen, S.C. (author), Lafeber, F.P.J.G. (author)
Osteoarthritis is a highly prevalent disease, age being the main risk factor. The age-related accumulation of advanced-glycation-endproducts (AGEs) adversely affects the mechanical and biochemical properties of cartilage. The hypothesis that accumulation of cartilage AGEs in combination with surgically induced damage predisposes to the...
article 2012
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Vos, P. (author), Intema, F. (author), van El, B. (author), de Groot, J. (author), Bijlsma, J.W.J. (author), Lafeber, F. (author), Mastbergen, S. (author), TNO Kwaliteit van Leven (author)
Many animal models are used to study osteoarthritis (OA). In these models the role of joint loading in the development of OA is not fully understood. We studied the effect of loading on the development of OA in the canine Groove-model. In ten female beagle dogs OA was induced in one knee according to the Groove-model. The animals were divided in...
article 2009
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Intema, F. (author), de Groot, J. (author), Elshof, B. (author), Vianen, M.E. (author), Yocum, S. (author), Zuurmond, A. (author), Mastbergen, S.C. (author), Lafeber, F.P. (author), TNO Kwaliteit van Leven (author)
In studies aimed at local treatment of experimental osteoarthritis (OA) it is optimal to have an internal (untreated) OA control. Such an approach excludes interanimal variation, and allows paired statistical evaluation of treatment efficacy. For this purpose, we developed and characterized a bilateral version of the canine Groove model. We...
article 2008
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TNO Kwaliteit van Leven (author), Hu, L. (author), van der Hoogt, C.C. (author), Espirito Santo, S.M.S. (author), Out, R. (author), Kypreos, K.E. (author), van Vlijmen, B.J.M. (author), van Berkel, T.J.C. (author), Romijn, J.A. (author), Havekes, L.M. (author), van Dijk, K.W. (author), Rensen, P.C.N. (author)
LPL activity plays an important role in preceding the VLDL remnant clearance via the three major apolipoprotein E (apoE)-recognizing receptors: the LDL receptor (LDLr), LDL receptor-related protein (LRP), and VLDL receptor (VLDLr). The aim of this study was to determine whether LPL activity is also important for VLDL remnant clearance...
article 2008
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TNO Kwaliteit van Leven (author), Jansen, N.W.D. (author), Roosendaal, G. (author), Bijlsma, J.W.J. (author), de Groot, J. (author), Theobald, M. (author), Lafeber, F.P.J.G. (author)
Background: Joint bleeds have a direct adverse effect on joint cartilage, leading to joint deterioration and, ultimately, to disability. Objective: To examine the hypothesis that because degenerated cartilage has a limited repair capacity, it is more susceptible than healthy cartilage to blood-induced cartilage damage. Methods: Healthy,...
article 2008
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Jansen, N.W.D. (author), Roosendaal, G. (author), Bijlsma, J.W.J. (author), de Groot, J. (author), Lafeber, F.P.J.G. (author), TNO Kwaliteit van Leven (author)
Objective. Joint bleeding, or hemarthrosis, leads in time to severe joint damage. This study was carried out to test the in vitro thresholds of exposure time and concentration that lead to irreversible joint damage, to add to the discussion on the usefulness of aspiration of the joint after a hemorrhage. Methods. Explants of healthy human...
article 2007
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Kamphorst, J.J. (author), van der Heijden, R. (author), de Groot, J. (author), Lafeber, F.P.J.G. (author), Reijmers, T.H. (author), van El, B. (author), Tjaden, U.R. (author), van der Greef, J. (author), Hankemeier, T. (author), TNO Kwaliteit van Leven (author)
Synovial fluid potentially contains markers for early diagnosis and disease progression in degenerative joint diseases such as osteoarthritis. Here, a method is described for profiling endogenous peptides in human synovial fluid, using ultrafiltration, solid-phase extraction, nanoscale liquid chromatography, and high-resolution mass spectrometry...
article 2007
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Steenvoorden, M.M.C. (author), Bank, R.A. (author), Ronday, H.K. (author), Toes, R.E.M. (author), Huizinga, T.W.J. (author), de Groot, J. (author), TNO Kwaliteit van Leven (author)
Objective: In vitro models for joint diseases often focus on a single cell type, such as chondrocytes in osteoarthritis (OA) or fibroblast-like synoviocytes (synoviocytes) in rheumatoid arthritis (RA). However, these joint diseases affect the whole joint and interaction between chondrocytes and synoviocytes may play an important role in disease...
article 2007
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Jenniskens, Y.M. (author), Koevoet, W. (author), de Bart, A.C.W. (author), Weinans, H. (author), Jahr, H. (author), Verhaar, J.A.N. (author), de Groot, J. (author), van Osch, G.J.V.M. (author), TNO Kwaliteit van Leven (author)
Objective: Examine effects of insulin-like growth factor 1 (IGF1), transforming growth factor β2 (TGFβ2) and fibroblast growth factor 2 (FGF2) on proteoglycan and collagen network and biomechanical properties of the newly formed cartilage matrix. Methods: Bovine articular chondrocytes were cultured in alginate beads for 3 weeks with or without...
article 2006
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Valverde-Franco, G. (author), Binette, J.S. (author), Li, W. (author), Wang, H. (author), Chai, S. (author), Laflamme, F. (author), Tran-Khanh, N. (author), Quenneville, E. (author), Meijers, T. (author), Poole, A.R. (author), Mort, J.S. (author), Buschmann, M.D. (author), Henderson, J.E. (author), TNO Kwaliteit van Leven (author)
Fibroblast growth factor (FGF) receptor 3 has been identified as a key regulator of endochondral bone development and of post-natal bone metabolism through its action on growth plate chondrocytes and osteoblasts, respectively. It has also been shown to promote chondrogenesis and cartilage production by cultured pre-chondrogenic cells in response...
article 2006
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Sivan, S.S. (author), Tsitron, E. (author), Wachtel, E. (author), Roughley, P. (author), Sakkee, N. (author), van der Ham, F. (author), de Groot, J. (author), Maroudas, A. (author), TNO Kwaliteit van Leven (author)
During aging and degeneration, many changes occur in the structure and composition of human cartilaginous tissues, which include the accumulation of the AGE (advanced glycation end-product), pentosidine, in long-lived proteins. In the present study, we investigated the accumulation of pentosidine in constituents of the human IVD (intervertebral...
article 2006
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TNO Kwaliteit van Leven (author), Sivan, S.S. (author), Tsitron, E. (author), Wachtel, E. (author), Roughley, P.J. (author), Sakkee, N. (author), van der Ham, F. (author), Groot, J.de (author), Roberts, S. (author), Maroudas, A. (author)
We have used the racemization of aspartic acid as a marker for the "molecular age" of aggrecan components of the human intervertebral disc matrix (aggregating and non-aggregating proteoglycans as well as the different buoyant density fractions of aggrecan). By measuring the D/L Asp ratio of the various aggrecan species as a function of age and...
article 2006
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Gaubius Instituut TNO (author), van de Lest, C.H.A. (author), Brama, P.A.J. (author), van El, B. (author), de Groot, J. (author), van Weeren, P.R. (author)
Osteochondrosis (OC) is the most important developmental orthopaedic disease in the horse. Despite some decades of research, much of the pathogenesis of the disorder remains obscure. Increasing knowledge of articular cartilage development in juvenile animals led to the presumption that the role of collagen in OC might be more important than...
article 2004
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Marijnissen, A.C.A. (author), van Roermund, P.M. (author), TeKoppele, J.M. (author), Bijlsma, J.W.J. (author), Lafeber, F.P.J.G. (author), TNO Preventie en Gezondheid (author)
Objective: The frequently used anterior cruciate ligament transection (ACLT) model of osteoarthritis (OA) in the dog, makes use of a permanent trigger (joint instability) for inducing degenerative changes. The present study evaluates a canine model of degenerative cartilage damage, mimicking OA, which is induced without making use of permanent...
article 2002
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Huebner, J.L. (author), Hanes, M.A. (author), Beekman, B. (author), TeKoppele, J.M. (author), Kraus, V.B. (author), Gaubius Instituut (author)
Objective: To evaluate the interaction of bone and cartilage in knee osteoarthritis (OA) pathogenesis in two guinea-pig strains with appreciable differences in bone metabolism. Design: Two guinea-pig strains were evaluated for their susceptibilities to OA using semi-quantitative histological grading of knee joints and quantification of...
article 2002
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de Groot, J. (author), Bank, R.A. (author), Tchetverikov, I. (author), Verzijl, N. (author), TeKoppele, J.M. (author), Gaubius Instituut (author)
Osteoarthritis is a disabling joint disease that is characterized by the progressive destruction of articular cartilage. Diagnosis is based on clinical symptoms in combination with radiography, which is relatively insensitive and provides only an indication of accumulated damage. Alternative methods, such as molecular markers, are therefore...
article 2002
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Marijnissen, A.C.A. (author), van Roermund, P.M. (author), Verzijl, N. (author), Tekoppele, J.M. (author), Bijlsma, J.W.J. (author), Lafeber, F.P.J.G. (author), TNO Preventie en Gezondheid (author)
Objective: Recently we described a canine model of osteoarthritis (OA), the groove model with features of OA at 10 weeks after induction, identical to those seen in the canine anterior cruciate ligament transection (ACLT) model. This new model depends on cartilage damage accompanied by transient intensified loading of the affected joint. The...
article 2002
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Verzijl, N. (author), de Groot, J. (author), Bank, R.A. (author), Bayliss, M.T. (author), Bijlsma, J.W.J. (author), Lafeber, F.P.J.G. (author), Maroudas, A. (author), TeKoppele, J.M. (author), Gaubius Instituut (author)
During aging, non-enzymatic glycation results in the formation and accumulation of the advanced glycation endproduct pentosidine in long-lived proteins, such as articular cartilage collagen. In the present study, we investigated whether pentosidine accumulation also occurs in cartilage aggrecan. Furthermore, pentosidine levels in aggrecan...
article 2001
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Ronday, H.K. (author), van der Laan, W.H. (author), Tak, P.P. (author), de Roos, J.A.D.M. (author), Bank, R.A. (author), Tekoppele, J.M. (author), Froelich, C.J. (author), Hack, C.E. (author), Hogendoorn, P.C.W. (author), Breedveld, F.C. (author), Verheijen, J.H. (author), Gaubius Instituut (author)
Objective. To investigate the cartilage-degrading capacity of granzyme B and the presence of granzyme B-positive cells at sites of erosion in the rheumatoid synovium. Methods. Granzyme B was added to [3H]proline/[35S]sulphate-labelled cartilage matrices and to cartilage explants. Proteoglycan degradation was assessed by the release of 35S and...
article 2001
Searched for: subject%3A%22Proteoglycans%22
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