
Project
Toxicological characterization of novel food and feed
The assessment of the safety of new generations of complex foods and feeds (including genetically modified crops) is carried out using 28-day and 90-day feed/toxicity trials. There is a great deal of discussion about the suitability and sensitivity of animal trials used to assess the safety of these complex products.
Goal
This project has three long-term objectives:
1) The toxicological characterisation of existing or new complex products and suspect preparations using a battery of in vitro assays for specific toxicity.
2) The use of omics techniques (gene expression and metabolite profiles) to analyse existing or new foods to detect toxic properties.
3) The implementation of these new methods/approaches to make a contribution to the refinement, reduction and, where relevant, replacement of existing animal trials for feed and toxicity tests.
We intend to actively communicate the opportunities this new approach offers for the risk assessment of complex mixtures.
Method
The following specific objectives will be addressed in 2014:
1) Review the suitability and strength of in vitro effect and bioactivation tests in combination with transcriptomics techniques for the broad screening of the potential hazards posed by complex products. This review will be carried out using herb mixtures (including mixtures based on Aristolochia and tansy ragwort) and new crops (potato lines) as cases.
2) Use omics techniques to prepare gene expression and metabolite profiles of existing and new complex foods using for future use in risk assessments.
Project result
The knowledge and expertise acquired during this project will be used to submit recommendations for the policy to be adopted in response to incidents and crises.
This project will provide an insight into the practicability of in vitro methods and omics techniques for the assessment of the safety of complex new foods and animal feeds, including products containing ingredients originating from GMO crops. The results will serve purposes including the provision of input for discussions within national and international authorities and organisations, in particular discussions on the predictive value of animal trials for the assessment of food safety and the adoption of in vitro approaches (based on omics) as an alternative.
Publications
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Exploitation of ToxCast data in the safety risk assessment of food chemicals
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Toxicokinetics in non-animal risk assessment PBK-based quantitative in vitro-in vivo extrapolation (QIVIVE) as critical tool in the development of alternatives to animal testing
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Determination of genotoxic potencies of pyrrolizidine alkaloids in HepaRG cells using the γH2AX assay
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Expert opinions on the acceptance of alternative methods in food safety evaluations : Formulating recommendations to increase acceptance of non-animal methods for kinetics
Regulatory Toxicology and Pharmacology (2018), Volume: 92 - ISSN 0273-2300 - p. 145-151. -
Toxicokinetics in Risk Evaluations
Chemical Research in Toxicology (2018), Volume: 31, Issue: 5 - ISSN 0893-228X - p. 285-286. -
Dose-Dependent Increase of Triglyceride Levels in Human HepaRG Liver Cells Exposed to the Fungicide Cyproconazole
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Assessment of the genotoxic potential of pyrrolizidine alkaloids using human cell lines and the gammaH2AX In Cell Western technique
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Phenolic compounds of Triplaris gardneriana can protect cells against oxidative stress and restore oxidative balance
Biomedicine and Pharmacotherapy (2017), Volume: 93 - ISSN 0753-3322 - p. 1261-1268. -
Non-animal approaches for toxicokinetics in risk evaluations of food chemicals
Altex (2017), Volume: 34, Issue: 4 - ISSN 1868-596X - p. 501-514. -
Exposure of the Human HepaRG Liver Cell Line to Pyrrolizidine Alkaloids Results in a Gene Expression Profile Characteristic for Genotoxic Carcinogens