{"id":65231,"date":"2025-02-01T12:00:00","date_gmt":"2025-02-01T12:00:00","guid":{"rendered":"https:\/\/www.africa-press.net\/senegal\/politique\/le-super-intestin-des-femmes-enceintes"},"modified":"2025-02-01T12:00:00","modified_gmt":"2025-02-01T12:00:00","slug":"le-super-intestin-des-femmes-enceintes","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/le-super-intestin-des-femmes-enceintes","title":{"rendered":"Le Super Intestin des Femmes Enceintes"},"content":{"rendered":"<p><span style=\"color: #ff6600\"><strong>Africa-Press &#8211; Senegal. <\/strong><\/span>Une femme enceinte doit se nourrir pour deux et la surface de son intestin gre\u0302le augmente en proportion, montre une e\u0301tude mene\u0301e par des chercheurs autrichiens de l\u2019Universite\u0301 de Vienne. Cet accroissement se poursuit au cours de l\u2019allaitement quand la me\u0300re a encore de gros besoins nutritifs pour produire un lait de qualite\u0301.<\/p>\n<p>Chez des souris gestantes, les chercheurs ont pu observer que cette adaptation re\u0301sulte du ralentissement du renouvellement intensif des villosite\u0301s intestinales, ces replis d\u2019environ 1 mm de hauteur qui tapissent la muqueuse intestinale de l\u2019intestin gre\u0302le. Les villosite\u0301s s\u2019allongent alors dans l\u2019intestin, grossissent, et leur plus grande densite\u0301 freine aussi le transit des nutriments qui sont ainsi mieux absorbe\u0301s.<\/p>\n<p><b>Des changements induits par une hormone: la prolactine<\/b><\/p>\n<p>De plus, les cellules intestinales de ces villosite\u0301s expriment plus de transporteurs pour les lipides, les acides amine\u0301s et des vitamines. Les chercheurs ont de\u0301couvert que ce changement e\u0301tait induit par une hormone, la prolactine, produite au cours de la gestation chez les mammife\u0300res et de\u0301ja\u0300 connue pour provoquer le de\u0301veloppement du tissu mammaire et sa production de lait.<\/p>\n<p>Preuve du ro\u0302le critique de la prolactine, le simple fait de retirer les nouveau-ne\u0301s a\u0300 leur me\u0300re qui fait chuter son taux sanguin de prolactine, ou un blocage direct de l\u2019action de la prolactine par un inhibiteur, faisait re\u0301gresser la surface de son intestin.<\/p>\n<p><b>Une condition au bon de\u0301veloppement du be\u0301be\u0301<\/b><\/p>\n<p>En utilisant des organoi\u0308des de tissu intestinal de\u0301veloppe\u0301s a\u0300 partir de cellules humaines, les chercheurs ont retrouve\u0301 les me\u0302mes me\u0301canismes pour de\u0301velopper la surface intestinale au cours de la grossesse. Cette adaptation transitoire a\u0300 une demande accrue en nutriments conditionne le bon de\u0301veloppement du f\u0153tus puis du be\u0301be\u0301 quand il est allaite\u0301.<\/p>\n<p>Les souriceaux ne\u0301s de souris ne pre\u0301sentant pas cette augmentation de surface intestinale lors de la gestation e\u0301taient plus petits et pre\u0301sentaient a\u0300 l\u2019a\u0302ge adulte un risque plus e\u0301leve\u0301 de diabe\u0300te, mimant une conse\u0301quence de\u0301ja\u0300 observe\u0301e chez les enfants ne\u0301s de femmes enceintes lors de la grande famine de 1944 aux Pays-Bas.<\/p>\n<p><strong>Pour plus d&rsquo;informations et d&rsquo;analyses sur la <span style=\"color: #ff6600\">Senegal<\/span>, suivez <span style=\"color: #ff6600\">Africa-Press<span style=\"color: #ff6600\"><\/span><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Africa-Press &#8211; Senegal. Une femme enceinte doit se nourrir pour deux et la surface de son intestin gre\u0302le augmente en proportion, montre une e\u0301tude mene\u0301e par des chercheurs autrichiens de l\u2019Universite\u0301 de Vienne. Cet accroissement se poursuit au cours de l\u2019allaitement quand la me\u0300re a encore de gros besoins nutritifs pour produire un lait de [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":65230,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[44],"class_list":["post-65231","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","tag-senegal-2"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.1 (Yoast SEO v27.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Le Super Intestin des Femmes Enceintes - Senegal<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.africa-press.net\/senegal\/politique\/le-super-intestin-des-femmes-enceintes\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Le Super Intestin des Femmes Enceintes\" \/>\n<meta property=\"og:description\" content=\"Africa-Press &#8211; Senegal. Une femme enceinte doit se nourrir pour deux et la surface de son intestin gre\u0302le augmente en proportion, montre une e\u0301tude mene\u0301e par des chercheurs autrichiens de l\u2019Universite\u0301 de Vienne. 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