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Mirahmadi, F. (author), Koolstra, J.H. (author), Fazaeli, S. (author), Lobbezoo, F. (author), van Lenthe, G.H. (author), Snabel, J. (author), Stoop, R. (author), Everts, V. (author)Nutrition of articular cartilage relies mainly on diffusion and convection of solutes through the interstitial fluid due to the lack of blood vessels. The diffusion is controlled by two factors: steric hindrance and electrostatic interactions between the solutes and the matrix components. Aging comes with changes in the cartilage structure and...article 2019
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van Tiel, J. (author), Siebelt, M. (author), Reijman, M. (author), Bos, P.K. (author), Waarsing, J.H. (author), Zuurmond, A.M. (author), Nasserinejad, K. (author), van Osch, G.J.V.M. (author), Verhaar, J.A.N. (author), Krestin, G.P. (author), Weinans, H. (author), Oei, E.H.G. (author)Objective. Recently, computed tomography arthrography (CTa) was introduced as quantitative imaging biomarker to estimate cartilage sulphated glycosaminoglycan (sGAG) content in human cadaveric knees. Our aim was to assess the correlation between in vivo CTa in human osteoarthritis (OA) knees and ex vivo reference standards for sGAG and collagen...article 2016
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He, M. (author), van Wijk, E. (author), Berger, R. (author), Wang, M. (author), Strassburg, K. (author), Schoeman, J.C. (author), Vreeken, R.J. (author), van Wietmarschen, H. (author), Harms, A.C. (author), Kobayashi, M. (author), Hankemeier, T. (author), van der Greef, J. (author)Oxylipins play important roles in various biological processes and are considered as mediators of inflammation for a wide range of diseases such as rheumatoid arthritis (RA). The purpose of this research was to study differences in oxylipin levels between a widely used collagen induced arthritis (CIA) mice model and healthy control (Ctrl) mice....article 2015
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Vos, P.A.J.M. (author), de Groot, J. (author), Huisman, A.M. (author), Oostveen, J.C.M. (author), Marijnissen, A.C.A. (author), Bijlsma, J.W.J. (author), van El, B. (author), Zuurmond, A.M. (author), Lafeber, F.P.J.G. (author), TNO Kwaliteit van Leven (author)Objectives: Age-related changes in articular cartilage are likely to play a role in the aetiology of osteoarthritis (OA). One of the major age-related changes in cartilage is the accumulation of advanced-glycation-endproducts (AGEs). Since, cartilage tissue is not readily available from patients for studying AGE levels, alternative approaches...article 2010
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Bastiaansen-Jenniskens, Y.M. (author), Koevoet, W. (author), de Bart, A.C.W. (author), van der Linden, J.C. (author), Zuurmond, A.M. (author), Weinans, H. (author), Verhaar, J.A.N. (author), van Osch, G.J.V.M. (author), de Groot, J. (author), TNO Kwaliteit van Leven (author)Background: Damage to articular cartilage is one of the features of osteoarthritis (OA). Cartilage damage is characterised by a net loss of collagen and proteoglycans. The collagen network is considered highly important for cartilage function but little is known about processes that control composition and function of the cartilage collagen...article 2008
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Frost-Christensen, L.N. (author), Mastbergen, S.C. (author), Vianen, M.E. (author), Hartog, A. (author), de Groot, J. (author), Voorhout, G. (author), van Wees, A.M.C. (author), Lafeber, F.P.J.G. (author), Hazewinkel, H.A.W. (author), TNO Kwaliteit van Leven (author)Objective: The most used model for joint instability is the canine anterior cruciate ligament transection (ACLT)-model. The ACLT-model can be extended with a medial meniscectomy (MX) (i.e., ACLT-MX-model) to avoid unintentional, and with that variable, meniscal damage. The present study compares the ACLT-MX-model with the more recently...article 2008
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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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Hunter, D.J. (author), LaValley, M. (author), Li, J. (author), Zhang, Y. (author), Bauer, D. (author), Nevitt, M. (author), Guermazi, A. (author), de Groot, J. (author), Sakkee, N. (author), Gale, D. (author), Felson, D.T. (author), TNO Kwaliteit van Leven (author)Objective: Age-related changes in articular cartilage are likely to play a role in the etiology of osteoarthritis (OA). One of the major changes in the extracellular matrix of cartilage is the age-related accumulation of advanced glycation end products (AGEs). Pentosidine, an AGE crosslink, is one of the few characterized AGEs and is considered...article 2007
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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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TNO Kwaliteit van Leven (author), Meulenbelt, I. (author), Kloppenburg, M. (author), Kroon, H.M. (author), Houwing-Duistermaat, J.J. (author), Garnero, P. (author), Hellio Le Graverand, M.P. (author), de Groot, J. (author), Slagboom, P.E. (author)Objective: To assess the relation between the urinary concentrations of type II collagen C-telopeptide (UCTX-II) and radiographie signs of osteoarthritis (ROA) in the GARP (Genetics, Arthrosis and Progression) study. Methods: UCTX-II levels were measured in GARP study participants, who are sibling pairs predominantly with symptomatic...article 2006
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van der Harst, M.R. (author), de Groot, J. (author), Kiers, G.H. (author), Brama, P.A.J. (author), van de Lest, C.H.A. (author), van Weeren, P.R. (author)Objective - To assess whether site-related changes in biochemical composition are present in the cartilage and subchondral and trabecular bone of the metacarpophalangeal joint of horses with early osteoarthritis. Sample population - Right metacarpophalangeal joints from 59 mature warmblood horses. Procedure - Biochemical data (cross-link, amino...article 2005
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TNO Preventie en Gezondheid (author), van den Boom, R. (author), van der Harst, M.R. (author), Brommer, H. (author), Brama, P.A.J. (author), Barneveld, A. (author), van Weeren, P.R. (author), de Groot, J. (author)Reasons for performing study: Osteoarthritis (OA) is one of the most prevalent and disabling chronic conditions affecting horses and leads to degeneration of articular cartilage. Diagnosis is based on clinical signs in combination with radiography, which is relatively insensitive and provides only an indication of accumulated damage. Alternative...article 2005
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van der Harst, M.R. (author), Brama, P.A.J. (author), van de Lest, C.H.A. (author), Kiers, G.H. (author), de Groot, J. (author), van Weeren, P.R. (author), TNO Kwaliteit van Leven (author)Objective: In articular joints, the forces generated by locomotion are absorbed by the whole of cartilage, subchondral bone and underlying trabecular bone. The objective of this study is to test the hypothesis that regional differences in joint loading are related to clear and interrelated differences in the composition of the extracellular...article 2004
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Day, J.S. (author), van der Linden, J.C. (author), Bank, R.A. (author), Ding, M. (author), Hvid, I. (author), Sumner, D.R. (author), Weinans, H. (author), TNO Preventie en Gezondheid (author)Osteoarthritis is a chronic joint disease with pathological changes in the articulating cartilage and all other tissues that occupy the joint. Radin and coworkers have suggested the involvement of subchondral bone in the disease process. However, evidence for an essential role in the etiology has never been proven. Recent studies showing reduced...article 2004
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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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TNO Preventie en Gezondheid (author), van den Boom, R. (author), Brama, P.A.J. (author), Kiers, G.H. (author), de Groot, J. (author), van Weeren, P.R. (author)Objective - To assess the effects of age and joint disease on hydroxyproline and glycosaminoglycan (GAG) concentrations in synovial fluid from the metacarpophalangeal joint of horses and evaluate the association of those concentrations with severity of osteoarthritis and general matrix metalloproteinase (MMP) activity. Sample Population -...article 2004
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Verzijl, N. (author), Bank, R.A. (author), TeKoppele, J.M. (author), de Groot, J. (author), TNO Preventie en Gezondheid Gaubius instituut TNO (author)Purpose of review: Across the world, osteoarthritis is the most commonly occurring musculoskeletal disease of the elderly, affecting more than 25% of the population older than 60 years of age. By far the single greatest risk factor for the development of osteoarthritis is age, but a mechanism to explain this relation has not yet been identified....article 2003
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Bank, R.A. (author), Verzijl, N. (author), Lafeber, F.P.J.G. (author), Tekoppele, J.M. (author), Gaubius instituut TNO TNO Preventie en Gezondheid (author)Objective: The collagen network in human articular cartilage experiences a large number of stress cycles during life as it shows hardly any turnover after adolescence. We hypothesized that, to withstand fatigue failure, the physical condition of the collagen network laid down at adolescence is of crucial importance for the age of onset of...article 2002
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Verzijl, N. (author), de Groot, J. (author), Zaken, C.B. (author), Braun-Benjamin, O. (author), Maroudas, A. (author), Bank, R.A. (author), Mizrahi, J. (author), Schalkwijk, C.G. (author), Thorpe, S.R. (author), Baynes, J.W. (author), Bijlsma, J.W.J. (author), Lafeber, F.P.J.G. (author), TeKoppele, J.M. (author), Gaubius Instituut TNO (author)Objective. Age is an important risk factor for osteoarthritis (OA). During aging, nonenzymatic glycation results in the accumulation of advanced glycation end products (AGEs) in cartilage collagen. We studied the effect of AGE crosslinking on the stiffness of the collagen network in human articular cartilage. Methods. To increase AGE levels,...article 2002
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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