Searched for: subject:"adolescent"
(1 - 11 of 11)
document
Sivan, S.-S. (author), Wachtel, E. (author), Tsitron, E. (author), Sakkee, N. (author), van der Ham, F. (author), de Groot, J. (author), Roberts, S. (author), Maroudas, A. (author), TNO Kwaliteit van Leven (author)
Knowledge of rates of protein turnover is important for a quantitative understanding of tissue synthesis and catabolism. In this work, we have used the racemization of aspartic acid as a marker for the turnover of collagen obtained from healthy and pathological human intervertebral disc matrices. We measured the ratio of the D- and L-isomers in...
article 2008
document
Blom, W.A.M. (author), Mars, M. (author), Hendriks, H.F.J. (author), de Groot, L.C.P.G.M. (author), Stafleu, A. (author), Kok, F.J. (author), de Graaf, C. (author), TNO Kwaliteit van Leven (author)
Objective: To study the role of ghrelin as a hunger signal during energy restriction and to test the hypothesis that changes in fasting leptin concentrations during energy restriction are associated with changes in fasting ghrelin concentrations. Research Methods and Procedures: Thirty-five healthy, lean men (23 ± 3 years of age; BMI: 22.3 ±1.6...
article 2006
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Sivan, S.S. (author), Tsitron, E. (author), Wachtel, E. (author), Roughley, P.J. (author), Sakkee, N. (author), van der Ham, F. (author), de Groot, J. (author), Roberts, S. (author), Maroudas, A. (author), TNO Kwaliteit van Leven (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
document
Dhonukshe-Rutten, R.A.M. (author), van Dusseldorp, M. (author), Schneede, J. (author), de Groot, L.C.P.G.M. (author), van Staveren, W.A. (author), TNO Kwaliteit van Leven (author)
Background: Cobalamin deficiency is prevalent in vegetarians and has been associated with increased risk of osteoporosis. Aim of the study: To examine the association between cobalamin status and bone mineral density in adolescents formerly fed a macrobiotic diet and in their counterparts. Methods: In this cross-sectional study bone mineral...
article 2005
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de Groot, M.D. (author), Bosch, T. (author), Eikhout, S.M. (author), Vink, P. (author), TNO Kwaliteit van Leven (author)
A variety of seals is used to close bags. Each seal has advantages and disadvantages. For shop assistants sealing bags could be a repetitive physically demanding action. Opening and closing the bags again can cause some discomfort or annoyance for consumers. Besides, it is an activity which can endanger safety, i.e., knives being used in opening...
article 2005
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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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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
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
Böhm, F.J. (author), Hirasing, R.A. (author), Vaandrager, G.J. (author), Reeser, H.M. (author), Bijlsma, F. (author), de Groot, R.M. (author), TNO Preventie en Gezondheid (author)
Objective. To determine the mortality of insulin-dependent diabetes mellitus in the age group of 0-19 year over the period 1988-1990 and to compare these data with those of ten years ago. Design. Retrospective. Setting. The Netherlands. Method. The number of deaths was obtained by using the data of the death certificate registers of the Central...
article 1996
document
Hirasing, R.A. (author), Reeser, H.M. (author), de Groot, R.R.M. (author), Ruwaard, D. (author), van Buuren, S. (author), Verloove-Vanhorick, S.P. (author), TNO Preventie en Gezondheid (author)
OBJECTIVE - To determine the number and duration of hospital admissions due to diabetes in children aged 0-19 years between 1980 and 1991. RESEARCH DESIGN AND METHODS - Secondary analysis of data collected by the SIG Health Care Information was based on the 9th revision of the International Classification of Diseases. The subjects were all...
article 1996
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de Groot, D.M.G. (author), Bierman, E.P.B. (author), Bruijnzeel, P.L.B. (author), Woutersen, R.A. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
The 'disector' method was used to estimate number and size of simple non-perforated and complex 'perforated' synapses and their 'perforations' in the hippocampal CA3 area of 3, 12, 24 and 30 months old rats. A decrease with age from 3 to 24 months of age in the number of non-perforated synapses per neuron was found. Both non-perforated and...
article 1995
Searched for: subject:"adolescent"
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