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crimson-tide » crimson-tide » Ma 1ère rubrique » Le brossage des dents Mai aider a prevenir des naissances prematurees

Le brossage des dents Mai aider a prevenir des naissances prematurees

Auparavant, les bacteries inconnues habituellement dans la bouche pourrait etre responsable de jusqu'a 80 pour cent de la petite prematures travaux, estimation des medecins de la Case Western universites de Yale et une nouvelle etude recemment publiee dans le Journal of Clinical Microbiology.

La recherche pourrait aider les medecins a prevenir les naissances prematurees, en encourageant l'hygiene bucco-dentaire ou l'arret precoce de la main-d'?uvre en developpement cibles par la prescription d'antibiotiques.

"Le plus tot la femme est en travail premature, plus le risque qu'elle soit infecte", a declare Han Yiping, un medecin a la Case Western University et le premier auteur de l'etude.

La plupart des grossesses durent environ 40 semaines. Une naissance avant 37 semaines est classe comme prematures. Environ 12 pour cent de toutes les naissances dans les Etats-Unis sont prematures, un nombre qui a augmente de plus de 30 pour cent depuis 1981 pour des raisons inconnues. Les enfants nes prematures peuvent etre confrontes a de nombreux obstacles: la vision et la perte d'audition, la paralysie cerebrale, retard mental, et meme la mort.
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Le travail lui-meme est toujours un peu un mystere pour la science, ce qui rend perplexe les prematures du travail encore plus difficile. Tout ce que le statut socio-economique et de la course a l'infection bacterienne et de la genetique ont ete lies a des naissances prematurees, mais d'une cause definitive est encore hors de portee.

Han et ses collegues pensent qu'ils ont trouve une cause majeure, au moins chez la souris. En infectant les rongeurs avec Bergeyella, une bacterie inconnue auparavant trouvee dans les souris, les chercheurs ont provoque des naissances prematurees.

Chez l'homme, les scientifiques ont montre une forte correlation entre l'infection et les naissances prematurees. Medecins enleve le liquide amniotique de 46 femmes avec des grossesses potentiellement a risque eleve. Parmi ce groupe, 21 a rendu un debut bebe premature (32 semaines ou plus tot). Dix-neuf de ces femmes, soit environ 85 pour cent, ont ete precedemment detectes positifs pour les bacteries.

Les bacteries vivent normalement dans la bouche, mais si une coupure, blessure ou autre cavite permet a la bacterie de penetrer dans le sang, elles peuvent coloniser Voyage et eventuellement de l'uterus. Qui declenche une reponse immunitaire, ce qui peut enflammer l'uterus et eventuellement provoquer une mere d'aller dans le travail prematurement.