Searched for: subject%3A%22ELISA%22
(1 - 12 of 12)
document
Wacoo, A.P. (author), Wendiro, D. (author), Nanyonga, S. (author), Hawumba, J.F. (author), Sybesma, W. (author), Kort, R. (author)
In sub-Saharan Africa, there is a high demand for affordable and accessible methods for on-site detection of aflatoxins for appropriate food safety management. In this study, we validated an electrochemical immunosensor device by the on-site detection of 60 maize flour samples from six markets and 72 samples from households in Kampala. The...
article 2018
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Janssen-Duijghuijsen, L.M. (author), Wichers, H.J. (author), van Norren, K. (author), Keijer, J. (author), Baumert, J.L. (author), de Jong, G.A.H. (author), Witkamp, R.F. (author), Koppelman, S.J. (author)
Some studies have suggested that allergens may appear in the circulation after ingestion of allergenic food sources. The reported levels of allergen in serum, however, are low, and conclusions between studies differ. Here, we investigated factors that determine the detection of allergens in serum after consumption of peanuts. Ten healthy...
article 2017
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Witvoet, G. (author), Human, J.D. (author), Maniscalco, M.P. (author)
An active tilt mirror mechanism, meant for correction of the constellation breathing of the evolved Laser Interferometer Space Antenna, has been designed and realized. Its open-loop performance has been characterized in both time and frequency domain. Based on this, a feedback controller has been designed and the resulting closed-loop...
conference paper 2016
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Jayasena, S. (author), Smits, M. (author), Fiechter, D. (author), de Jong, A. (author), Nordlee, J. (author), Baumert, J. (author), Taylor, S.L. (author), Pieters, R.H. (author), Koppelman, S.J. (author)
Six commercial peanut enzyme-linked immunosorbent assay kits were assessed for their ability to recover peanut from the standard reference material 2387 peanut butter and also for their specificity in detecting four major peanut allergens, Ara h 1, Ara h 2, Ara h 3, and Ara h 6. The percentage recovery of peanut from peanut butter differed...
article 2015
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Kubben, F.J.G.M. (author), Sier, C.F.M. (author), Schram, M. (author), Witte, T.A.M.C. (author), Veenendaal, R.A. (author), van Duijn, W. (author), Verheijen, J.H. (author), Hanemaaijer, R. (author), Lamers, C.B.H.W. (author), Verspaget, H.W. (author), TNO Kwaliteit van Leven (author)
Background: Helicobacter pylori gastritis is recognized as an important pathogenetic factor in peptic ulcer disease and gastric carcinogenesis, and is accompanied by strongly enhanced gastric mucosal matrix metalloproteinase-9 (MMP-9) levels. Aim: This study was performed to investigate whether H. pylori-affected gastric mucosal MMP-2 and MMP-9...
article 2007
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TNO Kwaliteit van Leven (author), Hawinkels, L.J.A.C. (author), Verspaget, H.W. (author), van Duijn, W. (author), van der Zon, J.M. (author), Zuidwijk, K. (author), Kubben, F.J.G.M. (author), Verheijen, J.H. (author), Hommes, D.W. (author), Lamers, C.B.H.W. (author), Sier, C.F.M. (author)
Transforming growth factor-beta1 (TGF-beta1), a tumour suppressing as well as tumour-promoting cytokine, is stored as an extracellular matrix-bound latent complex. We examined TGF-beta1 activation and localisation of TGF-beta1 activity in gastric cancer. Gastric tumours showed increased stromal and epithelial total TGF-beta1 staining by...
article 2007
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Immer, U. (author), Reck, B. (author), Lindeke, S. (author), Koppelman, S. (author), TNO Voeding (author)
During the last years allergenic substances in food have gained more and more attention. Stricter rules for a peanut free food labelling demand a peanut contamination less than 5 ppm. The maintenance of a high quality of food products with regards to allergenic exposure is preferable warranted with rapid tests that can be utilized as an aid for...
article 2004
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Koppelman, S.J. (author), Lakemond, C.M.M. (author), Vlooswijk, R. (author), Hefle, S.L. (author), TNO Voeding Centraal Instituut voor Voedingsonderzoek TNO (author)
Several tests for the detection of soy proteins in foods have been described in the literature, and some are commercially available. This article gives an overview of these methods and discusses the advantages and disadvantages of each individual method. Based on the conclusions of this inventory, an experimental approach was designed to improve...
article 2004
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Koppelman, S. (author), Knulst, A.C. (author), Koers, W.J. (author), Penninks, A.H. (author), Peppelman, H. (author), Vlooswijk, R. (author), Pigmans, I. (author), van Duijn, G. (author), Hessing, M. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
Hazelnuts are widely used in the food industry owing to their nutritive value and taste. The amount of hazelnut present in a recipe is usually considered as a mark of quality. On the other hand, contamination of foods that normally do not contain hazelnuts is a threat for patients with a hazelnut allergy. For this reason, the availability of a...
article 1999
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Michiels, J.J. (author), Oortwijn, W.J. (author), Naaborg, R. (author), TNO Preventie en Gezondheid (author)
The classical clinical signs of deep vein thrombosis (DVT) are unspecific and may be found in several other conditions besides DVT. Therefore, patients suspicious of DVT are subjected to elaborate invasive or noninvasive evidence-based procedures that actually confirm DVT in only 20% to 30% of patients in this setting. However, simple laboratory...
article 1999
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de Jong, E.C. (author), van Zijverden, M. (author), Spanhaak, S. (author), Koppelman, S.J. (author), Pellegrom, H. (author), Penninks, A.H. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)
Background: Peanuts are a major cause of food allergies both in children as in adults which can induce an anaphylactic shock. The identification and characterization of peanut allergens could lead to more insight into the mechanism and contribute to the improvement of diagnostic tests and treatment for peanut allergy. Objectives: In the present...
article 1998
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Medisch Biologisch Laboratorium TNO (author), van Loon, A.A.W.M. (author), Groenendijk, R.H. (author), Timmerman, A.J. (author), van der Schans, G.P. (author), Lohman, P.H.M. (author), Baan, R.A. (author)
A simple, sensitive and fast immunochemical method has been developed to quantify the amount of DNA damage in cells of human blood after in vitro exposure to ionizing radiation. The technique is based on the enhancement of the radiation-induced single-strandedness, which occurs in DNA regions flanking strand breaks, by a controlled further...
article 1992
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