Mice fed on a diet enriched with genetically engineered multivitamin corn show no sub-acute toxic effects and no sub-chronic toxicity
Article first published online: 28 AUG 2012
© 2012 The Authors Plant Biotechnology Journal © 2012 Society for Experimental Biology, Association of Applied Biologists and Blackwell Publishing Ltd
Plant Biotechnology Journal
Volume 10, Issue 9, pages 1026–1034, December 2012
How to Cite
Arjó, G., Capell, T., Matias-Guiu, X., Zhu, C., Christou, P. and Piñol, C. (2012), Mice fed on a diet enriched with genetically engineered multivitamin corn show no sub-acute toxic effects and no sub-chronic toxicity. Plant Biotechnology Journal, 10: 1026–1034. doi: 10.1111/j.1467-7652.2012.00730.x
- Issue published online: 5 NOV 2012
- Article first published online: 28 AUG 2012
- Received 30 April 2012; revised 5 July 2012; accepted 10 July 2012.
- genetically engineered corn;
- safety assessment;
- sub-chronic toxicity
Multivitamin corn is a novel genetically engineered variety that simultaneously produces high levels of β-carotene, ascorbate and folate, and therefore has the potential to address simultaneously multiple micronutrient deficiencies caused by the lack of vitamins A, B9 and C in developing country populations. As part of the development process for genetically engineered crops and following European Food Safety Authority (EFSA) recommendations, multivitamin corn must be tested in whole food/feed sub-chronic animal feeding studies to ensure there are no adverse effects, and potential allergens must be identified. We carried out a 28-day toxicity assessment in mice, which showed no short-term sub-acute evidence of diet-related adverse health effects and no difference in clinical markers (food consumption, body weight, organ/tissue weight, haematological and biochemical blood parameters and histopathology) compared to mice fed on a control diet. A subsequent 90-day sub-chronic feeding study again showed no indications of toxicity compared to mice fed on control diets. Our data confirm that diets enriched with multivitamin corn have no adverse effects on mice, do not induce any clinical signs of toxicity and do not contain known allergens.