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Vitamin K antagonist rodenticides display different teratogenic activity

Abstract : Vitamin K antagonists (VKA) are not recommended during pregnancy because warfarin (a first-generation VKA) is associated with a malformation syndrome "the fetal warfarin syndrome" (FWS). VKA are also used for rodent management worldwide. Recently, the Committee for Risk Assessment responsible for the European chemical legislation for advances on the safe use of chemicals had classed 8 anticoagulant used as rodenticides in the reprotoxic category 1A or 1B. This classification emerges from a read-across prediction of toxicity considering the warfarin malformation syndrome. Herein, our study explores the teratogenicity of warfarin at the human therapeutic dose and that of bromadiolone, a second-generation anticoagulant rodenticide. Using a rat model, our study demonstrates that warfarin used at the therapeutic dose is able to induce teratogenicity, while in the same conditions bromadiolone does not induce any teratogenic effect, challenging the classification of all VKA as reprotoxic molecules.
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Contributeur : Sébastien Lefebvre Connectez-vous pour contacter le contributeur
Soumis le : vendredi 6 mars 2020 - 15:53:10
Dernière modification le : mercredi 3 novembre 2021 - 07:06:21



Thomas Chetot, Shira Taufana, Etienne Benoit, Virginie Lattard. Vitamin K antagonist rodenticides display different teratogenic activity. Reproductive Toxicology, Elsevier, 2020, 93, pp.131-136. ⟨10.1016/j.reprotox.2020.02.003⟩. ⟨hal-02501177⟩



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