jeudi 20 septembre 2012

Toxicité long terme des OGM

Ces derniers jours, les résultats d'une étude sur la toxicité de long terme sur des rats d'un maïs transgénique résistant à un herbicide...sont repris par la grande presse. Voici les graphiques de mortalité extrait de l'article publié dans la revue "Food and Chemical Toxicology" par Gilles-Eric Séralinia, Emilie Claira, Robin Mesnagea, Steeve Gressa, Nicolas Defargea, Manuela Malatestab, Didier Hennequinc, Joël Spiroux de Vendômoisa (University of Caen & University of Verona) et intitulé Long term toxicity of a Roundup herbicide and a Roundup-tolerant genetically modified maize.

Je laisse le soin aux spécialistes de décortiquer le protocole et les résultats. En attendant, je constate que chez les rats de laboratoire, les femelles vivent plus longtemps que les mâles. Une similitude que nous, les humains, on partage avec ces rongeurs !   



Fig. 1. Mortality of rats fed GMO treated or not with Roundup, and effects of Roundup alone. Rats were fed with NK603 GM maize (with or without application of Roundup) at three different doses (11, 22, 33% in their diet: thin, medium and bold lines, respectively) compared to the substantially equivalent closest isogenic non-GM maize (control, dotted line). Roundup was administrated in drinking water at 3 increasing doses, same symbols (environmental (A), MRL in agricultural GMOs (B) and half of minimal agricultural levels (C), see Section 2). Lifespan during the experiment for the control group is represented by the vertical bar ± SEM (grey area). In bar histograms, the causes of mortality before the grey area are detailed in comparison to the controls (0). In black are represented the necessary euthanasia because of suffering in accordance with ethical rules (tumors over 25% body weight, more than 25% weight loss, hemorrhagic bleeding, etc.); and in hatched areas, spontaneous mortality.

Aucun commentaire:

Enregistrer un commentaire

Les carnets du blog les plus consultés

Membres