{"id":73543,"date":"2025-12-17T12:00:00","date_gmt":"2025-12-17T12:00:00","guid":{"rendered":"https:\/\/www.africa-press.net\/senegal\/politique\/organoides-cardiaques-pour-fibrillation-auriculaire"},"modified":"2025-12-18T03:41:42","modified_gmt":"2025-12-18T03:41:42","slug":"organoides-cardiaques-pour-fibrillation-auriculaire","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/organoides-cardiaques-pour-fibrillation-auriculaire","title":{"rendered":"Organo\u00efdes Cardiaques pour Fibrillation Auriculaire"},"content":{"rendered":"<p><span style=\"color: #ff6600\"><strong>Africa-Press &#8211; Senegal. <\/strong><\/span>Enfin une avance\u0301e dans la fibrillation auriculaire (FA), ce trouble du rythme cardiaque tre\u0300s fre\u0301quent qui acce\u0301le\u0300re le c\u0153ur et le fait battre de manie\u0300re irre\u0301gulie\u0300re. Cette maladie concerne pre\u0300s de 60 millions de personnes dans le monde, mais aucun nouveau traitement n\u2019a e\u0301te\u0301 mis au point depuis au moins 30 ans.<\/p>\n<p><b>De nouvelles perspectives dans le traitement de la fibrillation auriculaire<\/b><\/p>\n<p>Une e\u0301quipe ame\u0301ricaine de l\u2019universite\u0301 du Michigan sous la direction d\u2019Aitor Aguirre, vient de re\u0301ussir a\u0300 cre\u0301er et perfectionner des organoi\u0308des de c\u0153ur \u2013 de minuscules mode\u0300les fonctionnels du c\u0153ur humain \u2013 capables de reproduire les caracte\u0301ristiques de cette anomalie du rythme cardiaque.<\/p>\n<p>Ce travail, publie\u0301 dans la revue Cell Stem Cell ouvre de nouvelles perspectives dans la prise en charge de la FA dont on sait que l\u2019apparition est favorise\u0301e par le vieillissement et la pre\u0301sence d\u2019une hypertension arte\u0301rielle, d\u2019une obe\u0301site\u0301 ou encore d\u2019un syndrome d\u2019apne\u0301e du sommeil.<\/p>\n<p>En fait, jusqu\u2019a\u0300 pre\u0301sent, les chercheurs ne disposaient pas vraiment de mode\u0300les pre\u0301cis du c\u0153ur humain pour leurs e\u0301tudes sur la FA et devaient se baser sur de simples feuillets de cellules cardiaques ou des structures en 3D.<\/p>\n<p>Ici, l\u2019e\u0301quipe du Michigan, de\u0301ja\u0300 spe\u0301cialise\u0301e dans la cre\u0301ation en laboratoire d\u2019organoi\u0308des cardiaques a\u0300 partir de cellules souches, a eu l\u2019ide\u0301e de rajouter des macrophages, des cellules immunitaires, qui ont en quelques semaines migre\u0301 dans le tissu cardiaque.<\/p>\n<p>Les chercheurs ont alors de\u0301couvert qu\u2019une part importante (85 %) de ces macrophages e\u0301tablissaient des connexions e\u0301lectriques directes avec les cellules cardiaques voisines. En ayant recours a\u0300 des marqueurs fluorescents, ils se sont aussi rendus compte que les macrophages pulsaient de manie\u0300re synchronise\u0301e avec les cellules musculaires cardiaques, provoquant des battements visibles a\u0300 l\u2019\u0153il nu.<\/p>\n<p><b>La transplantation en ligne de mire<\/b><\/p>\n<p>Comme le pre\u0301cisent les chercheurs dans le communique\u0301 de l\u2019universite\u0301, cet ajout de macrophages, en cre\u0301ant une inflammation, a permis de faire vieillir les organoi\u0308des et de les faire ressembler a\u0300 des c\u0153urs adultes.<\/p>\n<p>Afin de de\u0301montrer comment ce nouveau mode\u0300le pouvait e\u0302tre utilise\u0301 pour tester des the\u0301rapies, l\u2019e\u0301quipe a aussi administre\u0301 diffe\u0301rents dosages de mole\u0301cules anti-inflammatoires pour normaliser le rythme cardiaque.<\/p>\n<p>En attendant de peut-e\u0302tre un jour mieux traiter la fibrillation auriculaire par des anti-inflammatoires, \u00ab ces travaux offrent une perspective ine\u0301dite sur la fac\u0327on dont l\u2019inflammation peut de\u0301clencher des arythmies et sur la fac\u0327on dont des me\u0301dicaments pourraient enrayer ce processus \u00bb, commente Aitor Aguirre dans le communique\u0301. Et le spe\u0301cialiste de poursuivre: \u00ab Notre vision a\u0300 long terme est de de\u0301velopper des mode\u0300les cardiaques personnalise\u0301s a\u0300 partir de cellules de patients pour une me\u0301decine de pre\u0301cision et ge\u0301ne\u0301rer un jour des tissus cardiaques pre\u0302ts pour la transplantation \u00bb.<\/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><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Africa-Press &#8211; Senegal. Enfin une avance\u0301e dans la fibrillation auriculaire (FA), ce trouble du rythme cardiaque tre\u0300s fre\u0301quent qui acce\u0301le\u0300re le c\u0153ur et le fait battre de manie\u0300re irre\u0301gulie\u0300re. Cette maladie concerne pre\u0300s de 60 millions de personnes dans le monde, mais aucun nouveau traitement n\u2019a e\u0301te\u0301 mis au point depuis au moins 30 ans. [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":73542,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[44],"class_list":["post-73543","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>Organo\u00efdes Cardiaques pour Fibrillation Auriculaire - Senegal<\/title>\n<meta name=\"description\" content=\"Enfin une avance\u0301e dans la fibrillation auriculaire (FA), ce trouble du rythme cardiaque tre\u0300s fre\u0301quent qui acce\u0301le\u0300re ...\" \/>\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\/toutes-les-actualites\/organoides-cardiaques-pour-fibrillation-auriculaire\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Organo\u00efdes Cardiaques pour Fibrillation Auriculaire\" \/>\n<meta property=\"og:description\" content=\"Enfin une avance\u0301e dans la fibrillation auriculaire (FA), ce trouble du rythme cardiaque tre\u0300s fre\u0301quent qui acce\u0301le\u0300re ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/organoides-cardiaques-pour-fibrillation-auriculaire\" \/>\n<meta property=\"og:site_name\" content=\"Senegal\" \/>\n<meta property=\"article:published_time\" content=\"2025-12-17T12:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-12-18T03:41:42+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/12\/sm_1766057845.838279.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"900\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"cfeditorfr\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"cfeditorfr\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/organoides-cardiaques-pour-fibrillation-auriculaire#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/organoides-cardiaques-pour-fibrillation-auriculaire\"},\"author\":{\"name\":\"cfeditorfr\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1\"},\"headline\":\"Organo\u00efdes Cardiaques pour Fibrillation Auriculaire\",\"datePublished\":\"2025-12-17T12:00:00+00:00\",\"dateModified\":\"2025-12-18T03:41:42+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/organoides-cardiaques-pour-fibrillation-auriculaire\"},\"wordCount\":535,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/organoides-cardiaques-pour-fibrillation-auriculaire#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.africa-press.net\/senegal\/sites\/13\/2025\/12\/sm_1766057845.838279.jpg\",\"keywords\":[\"Senegal\"],\"articleSection\":[\"Divers\",\"Toutes les actualit\u00e9s\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/organoides-cardiaques-pour-fibrillation-auriculaire#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/organoides-cardiaques-pour-fibrillation-auriculaire\",\"url\":\"https:\/\/www.africa-press.net\/senegal\/toutes-les-actualites\/organoides-cardiaques-pour-fibrillation-auriculaire\",\"name\":\"Organo\u00efdes Cardiaques pour Fibrillation Auriculaire - 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