Searched for: subject:"adolescent"
(1 - 12 of 12)
document
van Deemter, M. (author), Ponsioen, T.L. (author), Bank, R.A. (author), Snabel, J.M.M. (author), van der Worp, R.J. (author), Hooymans, J.M.M. (author), Los, L.I. (author), TNO Kwaliteit van Leven (author)
The human vitreous body undergoes structural changes with aging. This can be followed by a posterior vitreous detachment, which can result in ocular pathology. As in many collagenous tissues, age-related changes in the vitreous could be caused by the formation of advanced glycation end products (AGEs). The goal of this study was to find out...
article 2009
document
Lu, Z.F. (author), Zandieh-Doulabi, B. (author), Wuisman, P.I. (author), Bank, R.A. (author), Helder, M.N. (author), Gaubius Instituut TNO (author)
Tissue microenvironment plays a critical role in guiding local stem cell differentiation. Within the intervertebral disc, collagen type II and nucleus pulposus (NP) cells are two major components. This study aimed to investigate how collagen type II and NP cells affect adipose tissue-derived stem cells (ASCs) in a 3D environment. ASCs were...
article 2008
document
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), 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
document
Verzijl, N. (author), de Groot, J. (author), Thorpe, S.R. (author), Bank, R.A. (author), Shaw, J.N. (author), Lyons, T.J. (author), Bijlsma, J.W.J. (author), Lafeber, F.P.J.G. (author), Baynes, J.W. (author), TeKoppele, J.M. (author), Gaubius Instituut TNO (author)
Collagen molecules in articular cartilage have an exceptionally long lifetime, which makes them susceptible to the accumulation of advanced glycation end products (AGEs). In fact, in comparison to other collagen-rich tissues, articular cartilage contains relatively high amounts of the AGE pentosidine. To test the hypothesis that this higher AGE...
article 2000
document
Bank, R.A. (author), Tekoppele, J.M. (author), Janus, G.J.M. (author), Wassen, M.H.M. (author), Pruijs, H.E.H. (author), van der Sluijs, H.A.H. (author), Sakkers, R.J.B. (author)
The brittleness of bone in patients with osteogenesis imperfecta (OI) has been attributed to an aberrant collagen network. However, the role of collagen in the loss of tissue integrity has not been well established. To gain an insight into the biochemistry and structure of the collagen network, the cross-links hydroxylysylpyridinoline (HP) and...
article 2000
document
Wang, X. (author), Bank, R.A. (author), TeKoppele, J.M. (author), Hubbard, G.B. (author), Athanasiou, K.A. (author), Agrawal, C.M. (author)
The purpose of this study was to explore the relationship between the integrity of collagen and biomechanical properties of bone. In this study, age (range, 5-26 years old) and gender related changes in cortical bone samples from 33 baboon femurs (15 males and 18 females) were examined. The percentage of denatured collagen was determined using a...
article 2000
document
Verzijl, N. (author), de Groot, J. (author), Oldehinkel, E. (author), Bank, R.A. (author), Thorpe, S.R. (author), Baynes, J.W. (author), Bayliss, M.T. (author), Bijlsma, J.W.J. (author), Lafeber, F.P.J.G. (author), TeKoppele, J.M. (author), Gaubius Laboratory, Div. Vasc./Connective Tissue Res., TNO Prevention and Health, PO Box 2215, 2301 CE Leiden, Netherlands (author)
Non-enzymic modification of tissue proteins by reducing sugars, the so-called Maillard reaction, is a prominent feature of aging. In articular cartilage, relatively high levels of the advanced glycation end product (AGE) pentosidine accumulate with age. Higher pentosidine levels have been associated with a stiffer collagen network in cartilage....
article 2000
document
Bank, R.A. (author), Robins, S.P. (author), Wijmenga, C. (author), Breslau-Siderius, L.J. (author), Bardoel, A.F.J. (author), van der Sluijs, H.A. (author), Pruijs, H.E.H. (author), Tekoppele, J.M. (author)
Bruck syndrome is characterized by the presence of osteoporosis, joint contractures, fragile bones, and short stature. We report that lysine residues within the telopeptides of collagen type I in bone are underhydroxylated, leading to aberrant crosslinking, but that the lysine residues in the triple helix are normally modified. In contrast to...
article 1999
document
Bank, R.A. (author), Tekoppele, J.M. (author), Oostingh, G. (author), Hazleman, B.L. (author), Riley, G.P. (author), Gaubius instituut TNO (author)
Objectives - To investigate age related and site specific variations in turnover and chemistry of the collagen network in healthy tendons as well as the role of collagen remodelling in the degeneration of the supraspinatus tendon (ST-D) in rotator cuff tendinitis. Methods - Collagen content and the amount of hydroxylysine (Hyl),...
article 1999
document
Bank, R.A. (author), Bayliss, M.T. (author), Lafeber, F.P.J.G. (author), Maroudas, A. (author), Tekoppele, J.M. (author), Gaubius Instituut TNO (author)
A biomechanical failure of the collagen network is postulated in many hypotheses of the development of osteoarthritis with advancing age. Here we investigate the accumulation of non-enzymatic glycation (NEG) products in healthy human articular cartilage, its relation to tissue remodelling and its role in tissue stiffening. Pentosidine levels...
article 1998
document
Bank, R.A. (author), Beekman, B. (author), Verzijl, N. (author), de Roos, J.A.D.M. (author), Nico Sakkee, A. (author), Tekoppele, J.M. (author), TNO Preventie en Gezondheid (author)
A high-performance liquid chromatographic assay was developed for pyridinium crosslinks and pentosidine in mature collagen of a wide variety of connective tissue hydrolysates by a simple two-step isocratic assay using a reversed-phase column. The crosslinks (including the internal standard pyridoxine) were optimally detected by their native...
article 1997
Searched for: subject:"adolescent"
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