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  • Open Access

Mice fed on a diet enriched with genetically engineered multivitamin corn show no sub-acute toxic effects and no sub-chronic toxicity

Authors

  • Gemma Arjó,

    1. Departament de Medicina, Universitat de Lleida-Institut de Recerca Biomèdica de Lleida (IRBLleida), Lleida, Spain
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  • Teresa Capell,

    1. Departament de Producció Vegetal i Ciència Forestal, Universitat de Lleida-AGROTECNIO Center, Lleida, Spain
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  • Xavier Matias-Guiu,

    1. Departament de Ciències Mèdiques Bàsiques, Universitat de Lleida-Institut de Recerca Biomèdica de Lleida (IRBLleida), Lleida, Spain
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  • Changfu Zhu,

    1. Departament de Producció Vegetal i Ciència Forestal, Universitat de Lleida-AGROTECNIO Center, Lleida, Spain
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  • Paul Christou,

    Corresponding author
    1. Departament de Producció Vegetal i Ciència Forestal, Universitat de Lleida-AGROTECNIO Center, Lleida, Spain
    2. Institució Catalana de Recerca i Estudis Avançats, Barcelona, Spain
      (fax +34 973 702690; email christou@pvcf.udl.es)
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  • Carme Piñol

    1. Departament de Medicina, Universitat de Lleida-Institut de Recerca Biomèdica de Lleida (IRBLleida), Lleida, Spain
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(fax +34 973 702690; email christou@pvcf.udl.es)

Summary

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.

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