{"id":16165,"date":"2017-02-27T13:54:00","date_gmt":"2017-02-27T10:54:00","guid":{"rendered":"https:\/\/isida-ivf.com\/maternite-differee\/"},"modified":"2023-08-24T19:45:29","modified_gmt":"2023-08-24T16:45:29","slug":"maternite-differee","status":"publish","type":"post","link":"https:\/\/isida-ivf.com\/fr\/maternite-differee\/","title":{"rendered":"Maternit\u00e9 diff\u00e9r\u00e9e"},"content":{"rendered":"\n<p>L&rsquo;av\u00e8nement de la technologie de vitrification (ou cong\u00e9lation rapide) a permis non seulement de congeler les ovules, mais aussi de les f\u00e9conder avec succ\u00e8s apr\u00e8s d\u00e9cong\u00e9lation. Selon des donn\u00e9es r\u00e9centes, l&rsquo;efficacit\u00e9 de la fertilit\u00e9 des ovocytes vitrifi\u00e9s est comparable \u00e0 celle des ovocytes frais. Cela a donn\u00e9 une nouvelle chance aux femmes atteintes d&rsquo;oncopathologie de maintenir leur fertilit\u00e9 avant le d\u00e9but du traitement, tout comme pour les femmes qui ne planifient pas actuellement une grossesse, de donner naissance \u00e0 leur propre enfant g\u00e9n\u00e9tiquement \u00e0 l&rsquo;avenir.<\/p>\n\n<p>Le nombre d&rsquo;ovocytes chez les femmes est pr\u00e9d\u00e9termin\u00e9 par la nature et individuel dans chaque cas particulier. En moyenne, au moment de la pubert\u00e9, le nombre d&rsquo;\u0153ufs est d&rsquo;environ 250-300 mille. Au fil du temps, leur nombre diminue. Le taux d&rsquo;\u00e9puisement des follicules avec l&rsquo;\u00e2ge ne fait qu&rsquo;augmenter. Ainsi, apr\u00e8s l&rsquo;\u00e2ge de trente-cinq ans, le nombre d&rsquo;ovules dans le corps f\u00e9minin est d&rsquo;environ 25 000, et au moment de la m\u00e9nopause, il est d\u00e9j\u00e0 d&rsquo;environ 1 000. En moyenne, au cours de la vie d&rsquo;une femme ovule seulement 400-500 ovules de tout le stock initial<\/p>\n\n<p>Une r\u00e9duction drastique du nombre d&rsquo;ovocytes entra\u00eene une r\u00e9duction significative de la probabilit\u00e9 de f\u00e9condation \u00e0 chaque cycle apr\u00e8s 35 ans. En outre, avec l&rsquo;\u00e2ge, il y a des changements dans les ovocytes eux-m\u00eames , ce qui conduit \u00e0 d&rsquo;\u00e9ventuelles pannes g\u00e9n\u00e9tiques et, par cons\u00e9quent, \u00e0 la probabilit\u00e9 d&rsquo;avoir un enfant avec des troubles g\u00e9n\u00e9tiques.<br\/><br\/>Le rythme de vie moderne, la situation \u00e9conomique, la carri\u00e8re et parfois les indications m\u00e9dicales conduisent de nombreuses femmes \u00e0 retarder la maternit\u00e9 jusqu&rsquo;\u00e0 des \u00abtemps meilleurs\u00bb. Il arrive que lorsque ce moment arrive, les femmes sont confront\u00e9es au probl\u00e8me de la grossesse, m\u00eame par FIV. Bien s\u00fbr, une alternative pourrait \u00eatre d&rsquo;utiliser des ovocytes de donneur provenant d&rsquo;un jeune donneur, mais beaucoup pr\u00e9f\u00e8rent toujours avoir leur propre b\u00e9b\u00e9 G\u00e9n\u00e9tique. Jusqu&rsquo;\u00e0 r\u00e9cemment, c&rsquo;\u00e9tait un probl\u00e8me insoluble.<\/p>\n\n<p>Avec la cryoconservation habituelle, les ovocytes ont \u00e9t\u00e9 d\u00e9truits et seule une nouvelle m\u00e9thode de vitrification leur a permis de les congeler avec succ\u00e8s, de les d\u00e9congeler et, si n\u00e9cessaire, de les congeler \u00e0 nouveau. Qu&rsquo;est-ce que la vitrification? Il s&rsquo;agit d&rsquo;une proc\u00e9dure de cong\u00e9lation rapide dans laquelle un ovocyte \u00e0 temp\u00e9rature ambiante est plac\u00e9 dans un environnement cryoprotecteur \u00e0 haute concentration et expos\u00e9 directement \u00e0 un nitrog\u00e8ne liquide. Une telle cong\u00e9lation rapide emp\u00eache la formation de cristaux de glace \u00e0 l&rsquo;int\u00e9rieur de la cellule qui la d\u00e9truirait. L&rsquo;ovocyte ainsi congel\u00e9 peut \u00eatre conserv\u00e9 pendant des dizaines d&rsquo;ann\u00e9es. Dans ce cas, l&rsquo;\u00e2ge et la qualit\u00e9 de l&rsquo;ovule restent les m\u00eames qu&rsquo;au moment de la ponction.<\/p>\n\n<p>Cette proc\u00e9dure a d\u00e9j\u00e0 permis \u00e0 de nombreuses femmes de donner naissance \u00e0 leur propre enfant en bonne sant\u00e9, m\u00eame apr\u00e8s avoir subi une chimioth\u00e9rapie et une radioth\u00e9rapie en raison de maladies oncologiques.<\/p>\n\n<p>Y a-t-il des risques maternels associ\u00e9s \u00e0 cette proc\u00e9dure? Comme pour toute proc\u00e9dure de FIV, il existe des risques mineurs associ\u00e9s \u00e0 la stimulation de la superovulation et \u00e0 la ponction ovarienne. Les protocoles de stimulation modernes, ainsi que la ponction contr\u00f4l\u00e9e par \u00e9chographie, permettent de les minimiser.<br\/>L&rsquo;exp\u00e9rience mondiale montre que les enfants n\u00e9s apr\u00e8s la vitrification des ovocytes ne diff\u00e8rent pas des enfants n\u00e9s dans des cycles frais.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>L&rsquo;av\u00e8nement de la technologie de vitrification (ou cong\u00e9lation rapide) a permis non seulement de congeler les ovules, mais aussi de les f\u00e9conder avec succ\u00e8s apr\u00e8s d\u00e9cong\u00e9lation. Selon des donn\u00e9es r\u00e9centes, l&rsquo;efficacit\u00e9 de la fertilit\u00e9 des ovocytes vitrifi\u00e9s est comparable \u00e0 celle des ovocytes frais. Cela a donn\u00e9 une nouvelle chance aux femmes atteintes d&rsquo;oncopathologie de [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":14950,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[45],"tags":[],"class_list":["post-16165","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-non-classifiee"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Maternit\u00e9 diff\u00e9r\u00e9e &#060; ISIDA International<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Maternit\u00e9 diff\u00e9r\u00e9e &#060; ISIDA International\" \/>\n<meta property=\"og:description\" content=\"L&rsquo;av\u00e8nement de la technologie de vitrification (ou cong\u00e9lation rapide) a permis non seulement de congeler les ovules, mais aussi de les f\u00e9conder avec succ\u00e8s apr\u00e8s d\u00e9cong\u00e9lation. Selon des donn\u00e9es r\u00e9centes, l&rsquo;efficacit\u00e9 de la fertilit\u00e9 des ovocytes vitrifi\u00e9s est comparable \u00e0 celle des ovocytes frais. 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