Searched for: subject:"Principal%5C+Component%5C+Analysis"
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Fu, J. (author), van Wietmarschen, H.A. (author), van der Kooij, A. (author), Cuppen, B.V.J. (author), Schroën, Y. (author), Marijnissen, A.K. (author), Meulman, J.J. (author), Lafeber, F.P.J.G. (author), van der Greef, J. (author)
Introduction: Biological therapies have greatly improved the treatment efficacy in rheumatoid arthritis (RA). However, in clinical practice a significant proportion of patients experience an inadequate response to treatment. The aim of this study is to classify responding and non-responding rheumatoid arthritis patients treated with biological...
article 2018
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de Lange-Brokaar, B.J.E. (author), Ioan-Facsinay, A. (author), Yusuf, E. (author), Visser, A.W. (author), Kroon, H.M. (author), van Osch, G.J.V.M. (author), Zuurmond, A.M. (author), Stojanovic-Susulic, V. (author), Bloem, J.L. (author), Nelissen, R.G.H.H. (author), Huizinga, T.W. (author), Kloppenburg, M. (author)
Objective To determine possible patterns of synovitis on contrast-enhanced magnetic resonance imaging (CE-MRI) and its relation to pain and severity in patients with radiographic knee osteoarthritis (OA). Methods In total, 86 patients (mean age 62 years, 66% women, median body mass index 29 kg/m2) with symptomatic knee OA (Kellgren/Lawrence...
article 2015
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Kuper, C.F. (author), Vogels, J. (author), Kemmerling, J. (author), Fehlert, E. (author), Rühl‐Fehlert, C. (author), Vohr, H.W. (author), Krul, C. (author)
Data in a toxicity test are evaluated generally per parameter. Information on the response per animal in addition to per parameter can improve the evaluation of the results. The results from the six studies in rats, described in the paper by Kemmerling, J., Fehlert, E., Rühl-Fehlert, C., Kuper, C.F., Stropp, G., Vogels, J., Krul, C., Vohr, H.-W....
article 2015
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Mariman, R. (author), Tielen, F. (author), Koning, F. (author), Nagelkerken, L. (author)
Background: Probiotic bacteria may render mice resistant to the development of various inflammatory and infectious diseases. Objective: This study aimed to identify mechanisms by which probiotic bacteria may influence intestinal immune homeostasis in noninflammatory conditions. Methods: The effect of VSL#3, a mixture of 8 probiotic bacteria, on...
article 2015
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van Buuren, S. (author), Perenboom, R. (author)
There are very few norms to evaluate and monitor the health and functioning of the elderly. This paper proposes a compact spatial representation of 25 health measurements of European citizens older than 50 years. Data from 44,285 unique individuals were obtained from the EU-wide Survey of Health, Ageing and Retirement in Europe(SHARE) data...
article 2014
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van Wietmarschen, H.A. (author), der Greef, J.V. (author), Schroën, Y. (author), Wang, M. (author)
Ethnopharmacological relevance Rehmannia Six Formula (R6, Chinese name is Liu Wei Di Huang Wan) is one of the most important classic Chinese medicine formula used to treat metabolic disorders related to aging. It was first reported in the Chinese medicine book titled 'Xiao Er Yao Zheng Zhi Jue by Qian Yi' (Chinese Song dynasty: 1035-1117). In...
article 2013
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Gubbels, J.S. (author), Kremers, S.P. (author), Stafleu, A. (author), Goldbohm, R.A. (author), de Vries, N.K. (author), Thijs, C. (author)
Background: This study identified lifestyle patterns by examining the clustering of eating routines (e.g. eating together as a family, having the television on during meals, duration of meals) and various activity-related behaviors (i.e. physical activity (PA) and sedentary screen-based behavior) in 5-year-old children, as well as the...
article 2012
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van Spil, W.E. (author), Jansen, N.W.D. (author), Bijlsma, J.W.J. (author), Reijman, M. (author), de Groot, J. (author), Welsing, P.M.J. (author), Lafeber, F.P.J.G. (author)
Objective: To assess a wide spectrum of biochemical markers (biomarkers) in a large cohort of individuals with (very) early symptomatic knee and/or hip osteoarthritis (OA). Secondly, to investigate associations between biomarkers and between biomarkers and demographics to demonstrate validity of the obtained dataset and further investigate the...
article 2012
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Bol, K. (author), Haeck, J.C. (author), Alić, L. (author), Niessen, W.J. (author), de Jong, M. (author), Bernsen, M.D. (author), Veenland, J.F. (author)
Three different DCE-MRI quantification methods: model-free-based, compartment-model-based and principal component analysis, are compared by evaluating parameter maps for histological defined volumes of vital and non-vital tumor tissue. To obtain an accurate spatial correspondence between histology and DCE-MRI, a two-step registration process was...
conference paper 2012
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Bluyssen, P.M. (author), Aries, M. (author), van Dommelen, P. (author)
Previous studies have shown that building, social and personal factors can influence one's perceived health and comfort. The aim of the underlying study was to get a better understanding of the relationships between these factors and perceived comfort. Self-administered questionnaires from 5732 respondents in 59 office buildings and building...
article 2011
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Schmid, M.S. (author), Dusseldorp, E. (author), TNO Kwaliteit van Leven (author)
Most linguistic processes - acquisition, change, deterioration - take place in and are determined by a complex and multifactorial web of language internal and language external influences. This implies that the impact of each individual factor can only be determined on the basis of a careful consideration of its interplay with all other factors....
article 2010
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Manisera, M. (author), van der Kooij, A.J. (author), Dusseldorp, E. (author)
The component structure of 14 Likert-type items measuring different aspects of job satisfaction was investigated using nonlinear Principal Components Analysis (NLPCA). NLPCA allows for analyzing these items at an ordinal or interval level. The participants were 2066 workers from five types of social service organizations. Our results suggest...
article 2010
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Verouden, M.P.H. (author), Westerhuis, J.A. (author), van der Werf, M.J. (author), Smilde, A.K. (author), TNO Kwaliteit van Leven (author)
In metabolomics research a large number of metabolites are measured that reflect the cellular state under the experimental conditions studied. In many occasions the experiments are performed according to an experimental design to make sure that sufficient variation is induced in the metabolite concentrations. However, as metabolomics is a...
article 2009
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van den Berg, R.A. (author), Rubingh, C.M. (author), Westerhuis, J.A. (author), van der Werf, M.J. (author), Smilde, A.K. (author), TNO Kwaliteit van Leven (author)
In metabolomics research, it is often important to focus the data analysis to specific areas of interest within the metabolome. In this paper, we describe the application of consensus principal component analysis (CPCA) and canonical correlation analysis (CCA) as a means to explore the relation between metabolome data and (i) biochemically...
article 2009
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Hockley, S.L. (author), Mathijs, K. (author), Staal, Y.C.M. (author), Brewer, D. (author), Giddings, I. (author), van Delft, J.H.M. (author), Phillips, D.H. (author), TNO Kwaliteit van Leven (author)
Microarray technology is being used increasingly to study gene expression of biological systems on a large scale. Both interlaboratory and interplatform differences are known to contribute to variability in microarray data. In this study we have investigated data from different platforms and laboratories on the transcriptomic profile of HepG2...
article 2009
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Volkers, R.J.M. (author), Ballerstedt, H. (author), Ruijssenaars, H. (author), de Bont, J.A.M. (author), de Winde, J.H. (author), Wery, J. (author), TNO Kwaliteit van Leven (author)
Pseudomonas putida S12 is well known for its remarkable solvent tolerance. Transcriptomics analysis of this bacterium grown in toluene-containing chemostats revealed the differential expression of 253 genes. As expected, the genes encoding one of the major solvent tolerance mechanisms, the solvent efflux pump SrpABC and its regulatory genes...
article 2009
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Geert Heidema, A. (author), Thissen, U. (author), Boer, J.M.A. (author), Bouwman, F.G. (author), Feskens, E.J.M. (author), Mariman, E.C.M. (author), TNO Kwaliteit van Leven (author)
In this study, we applied the multivariate statistical tool Partial Least Squares (PLS) to analyze the relative importance of 83 plasma proteins in relation to coronary heart disease (CHD) mortality and the intermediate end points body mass index, HDL-cholesterol and total cholesterol. From a Dutch monitoring project for cardiovascular disease...
article 2009
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Kuper, C.F. (author), Heijne, W.H. (author), Dansen, M. (author), Verhoeckx, K.C. (author), Boorsma, A. (author), Radonjic, M. (author), Bruijntjes, J. (author), Stierum, R. (author), Muijser, H. (author), Arts, J.H. (author), TNO Kwaliteit van Leven (author)
To contribute to the hazard identification of low molecular weight (LMW) respiratory allergens, respiratory allergy induced by trimellitic anhydride (TMA) was characterized by whole genome analysis of lung tissue and blood proteomics in Brown Norway rats. Dermal sensitization (50% and 25% w/v) with TMA and an inhalation challenge of 15 mg/m(3)...
article 2008
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Kaleta, M.P. (author), Hanea, R.G. (author), Jansen, J.D. (author), Heemink, A.W. (author), TNO Bouw en Ondergrond (author)
Variational data assimilation techniques (automatic history matching) can be used to adapt a prior permeability field in a reservoir model using production data. Classical variational data assimilation requires, however, the implementation of an adjoint model, which is an enormous programming effort. Moreover, it requires the results of one...
conference paper 2008
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Hertsenberg, S. (author), Brouwer, D. (author), Lurvink, M. (author), Rubingh, C. (author), Rijnders, E. (author), Tielemans, E. (author), TNO Kwaliteit van Leven (author)
Self-assessment of exposure (SAE) refers to any exposure assessment methodology wherein the worker takes an active role in establishing his or her exposure status. The objective of this study was to investigate the reliability and feasibility of SAE approaches among shoe repair workers collecting exposure data over a 3 month period. This study...
article 2007
Searched for: subject:"Principal%5C+Component%5C+Analysis"
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