La vitamine B3 réduirait considérablement les risques — Fausses couches

Le professeur Sally Dunwoodie entourée de son équipe

Une cure de vitamine B3, présente à l'état naturel dans la viande et les légumes, pourrait se révéler un remède contre les fausses couches dues au déficit d'une molécule dans le corps, selon une étude scientifique australienne présentée jeudi.

Les scientifiques ont en effet démontré pour la première fois un lien entre la molécule nicotinamide adenine dinucleotide (NAD) et le bon développement de l'embryon dans l'utérus.

Les fausses couches et les handicaps à la naissance sont l'angoisse de nombreuses femmes enceintes.

Or, les chercheurs ont constaté qu'une cure de vitamine B3 permettait aux cellules d'augmenter la fabrication de cette molécule. Chez les souris en tout cas. "Cette découverte a le potentiel de réduire considérablement le nombre de fausses couches et de malformations congénitales dans le monde, et je n'utilise pas ces mots à la légère", a déclaré la professeure Sally Dunwoodie, qui dirige l'institut australien. Ils ont découvert des mutations génétiques affectant la production de la molécule NAD.

Au cours de 12 ans de recherches, l'équipe a analysé les gènes de familles de souris particulièrement touchées par les fausses couches et les handicaps de naissance.

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Désormais, après avoir fait des tests sur des souris, les chercheurs doivent poursuivent leurs recherches pour infirmer ou confirmer ses résultats.

Le ministre de la Santé australien, Greg Hunt, a parlé d'une " découverte médicale historique ".

Il faudra plus d'études pour vérifier que la vitamine agit bien de la même manière chez l'homme, mais surtout pour mieux comprendre comment la molécule NAD agit sur la grossesse en général et quel est le bon taux à atteindre.

Les auteurs de l'étude veulent maintenant de créer un test permettant de repérer les femmes ayant un risque de déficience de NAD.

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