{"id":19151,"date":"2025-08-10T18:04:58","date_gmt":"2025-08-10T18:04:58","guid":{"rendered":"https:\/\/www.lowcostivf.net\/?p=19151"},"modified":"2025-08-10T20:40:34","modified_gmt":"2025-08-10T20:40:34","slug":"co-administering-cetrotide-and-ovitrelle","status":"publish","type":"post","link":"https:\/\/www.lowcostivf.net\/fr\/latest-news-from-north-cyprus-ivf-center\/co-administering-cetrotide-and-ovitrelle\/","title":{"rendered":"Co-administration de Cetrotide et d&#039;Ovitrelle"},"content":{"rendered":"<p><strong>Repenser une hypoth\u00e8se de longue date sur la FIV : Cetrotide et Ovitrelle peuvent-ils coexister sans conflit ?<\/strong><\/p>\n\n\n\n<p>Pendant de nombreuses ann\u00e9es, les sp\u00e9cialistes de la FIV ont cru que l&#039;administration simultan\u00e9e de Cetrotide (c\u00e9tror\u00e9lix, un antagoniste de la GnRH) et d&#039;Ovitrelle (hCG recombinante) serait contre-productive\u00a0; leurs effets respectifs pourraient s&#039;annuler, car ils semblent avoir des effets oppos\u00e9s au cours d&#039;un cycle de FIV. La logique \u00e9tait que Cetrotide inhibe la lib\u00e9ration endog\u00e8ne de LH via le blocage hypophysaire de la GnRH, tandis que l&#039;hCG imite la LH pour d\u00e9clencher la maturation finale des ovocytes. La crainte \u00e9tait que l&#039;administration simultan\u00e9e puisse entra\u00eener des effets concurrents et des r\u00e9sultats sous-optimaux.<\/p>\n\n\n\n<p>Cependant, de nombreuses \u00e9tudes cliniques bien men\u00e9es ont montr\u00e9 que la co-administration ne compromet pas la maturation des ovocytes, les taux de f\u00e9condation ou les r\u00e9sultats de la grossesse (Humaidan et al., 2005 ; Kolibianakis et al., 2004 ; Hebisha, 2016 ; Gunderson et al., 2018).<\/p>\n\n\n\n<p><strong>Pourquoi ils ne sont pas en conflit : m\u00e9canismes distincts, actions compl\u00e9mentaires<\/strong><\/p>\n\n\n\n<p>L&#039;explication r\u00e9side dans leurs sites d&#039;action diff\u00e9rents. Le Cetrotide agit au niveau hypophysaire, supprimant la lib\u00e9ration de LH et de FSH m\u00e9di\u00e9e par la GnRH (Felberbaum &amp; Diedrich, 1999), tandis que l&#039;hCG (Ovitrelle) contourne enti\u00e8rement l&#039;hypophyse et agit au niveau ovarien en se liant directement aux r\u00e9cepteurs LH\/hCG des cellules de la granulosa et de la th\u00e8que. Cette liaison active la cascade qui initie la reprise m\u00e9iotique et la maturation ovocytaire (Zeleznik, 2004). Par cons\u00e9quent, les sites r\u00e9cepteurs auxquels ces deux agents se lient sont distincts et ils ne pr\u00e9sentent aucun effet antagoniste\/comp\u00e9titif lorsqu&#039;ils sont co-administr\u00e9s.<\/p>\n\n\n\n<p>L&#039;hCG agissant en aval de l&#039;hypophyse, Cetrotide n&#039;interf\u00e8re pas avec son action ovarienne. En fait, la poursuite du traitement par l&#039;antagoniste jusqu&#039;au jour m\u00eame de l&#039;administration d&#039;hCG est \u00e9tay\u00e9e par des donn\u00e9es probantes et a \u00e9t\u00e9 utilis\u00e9e efficacement dans divers protocoles de FIV (Kolibianakis et al., 2006\u00a0; Hebisha, 2016\u00a0; Gunderson et al., 2018).<\/p>\n\n\n\n<p>Une \u00e9tude r\u00e9trospective (Hebisha, 2016) a d\u00e9montr\u00e9 que l&#039;administration d&#039;un antagoniste de la GnRH le jour du d\u00e9clenchement de l&#039;hCG lors de cycles agonistes longs prot\u00e8ge efficacement contre le SHO sans r\u00e9duire l&#039;efficacit\u00e9 de la maturation ovocytaire ni la performance du d\u00e9clenchement. De m\u00eame, un article de Fertilit\u00e9 et St\u00e9rilit\u00e9 a constat\u00e9 que la co-administration d&#039;un antagoniste le jour de l&#039;hCG n&#039;affectait pas le rendement ovocytaire ni les taux de grossesse.<\/p>\n\n\n\n<p><strong>Pourquoi cela est important chez les patients \u00e2g\u00e9s\u00a0: se prot\u00e9ger contre la lut\u00e9inisation pr\u00e9matur\u00e9e<\/strong><\/p>\n\n\n\n<p>Chez les femmes en \u00e2ge de procr\u00e9er avanc\u00e9, en particulier celles de 40 ans et plus, la lut\u00e9inisation pr\u00e9matur\u00e9e constitue une pr\u00e9occupation majeure. Avec l&#039;\u00e2ge, les cellules de la granulosa deviennent plus susceptibles de se lut\u00e9iniser pr\u00e9cocement en r\u00e9ponse \u00e0 un taux \u00e9lev\u00e9 de LH, perturbant ainsi la synchronisation n\u00e9cessaire \u00e0 une maturation et un pr\u00e9l\u00e8vement ovocytaires optimaux (Al-Azemi et al., 2011). En administrant Cetrotide \u00e0 proximit\u00e9 du d\u00e9clencheur de l&#039;hCG, les cliniciens b\u00e9n\u00e9ficient d&#039;une protection suppl\u00e9mentaire\u00a0: l&#039;antagoniste supprime les pics endog\u00e8nes de LH intempestifs susceptibles d&#039;entra\u00eener une lut\u00e9inisation pr\u00e9matur\u00e9e, tandis que l&#039;hCG continue d&#039;induire efficacement la maturation via l&#039;activit\u00e9 directe des r\u00e9cepteurs ovariens (Humaidan et al., 2005\u00a0; Hebisha, 2016).<\/p>\n\n\n\n<p>Cette strat\u00e9gie combin\u00e9e permet de pr\u00e9server \u00e0 la fois le moment et la qualit\u00e9 de la maturation des ovocytes, en particulier chez les patientes pr\u00e9sentant un risque \u00e9lev\u00e9 de lut\u00e9inisation pr\u00e9matur\u00e9e.<\/p>\n\n\n\n<p><strong>En r\u00e9sum\u00e9: <\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-small-font-size\">\n<li style=\"font-size:16px\">Ancienne hypoth\u00e8se d\u00e9mystifi\u00e9e : les preuves cliniques confirment que l\u2019administration simultan\u00e9e de Cetrotide et d\u2019hCG ne compromet pas les r\u00e9sultats de la FIV.<\/li>\n\n\n\n<li style=\"font-size:16px\">M\u00e9canismes distincts, synergie efficace : Cetrotide agit au niveau de l&#039;hypophyse ; hCG agit au niveau de l&#039;ovaire, donc pas d&#039;interf\u00e9rence.<\/li>\n\n\n\n<li style=\"font-size:16px\">Grande pertinence pour les patients \u00e2g\u00e9s : cette approche permet de se pr\u00e9munir contre la lut\u00e9inisation pr\u00e9matur\u00e9e tout en maintenant l\u2019efficacit\u00e9 du d\u00e9clencheur.<\/li>\n<\/ul>\n\n\n\n<p><strong>Les r\u00e9f\u00e9rences<\/strong><\/p>\n\n\n\n<p>Al-Azemi, M., Kyrou, D., Kolibianakis, EM, et al., 2011. Lut\u00e9inisation pr\u00e9matur\u00e9e dans les cycles d&#039;antagonistes de la GnRH\u00a0: un facteur de risque d&#039;alt\u00e9ration des r\u00e9sultats apr\u00e8s FIV\u00a0? Human Reproduction, 26(7), pp.1839\u20131845.<br>Felberbaum, R. et Diedrich, K., 1999. Antagonistes de la gonadolib\u00e9rine\u00a0: une nouvelle \u00e8re pour la stimulation ovarienne contr\u00f4l\u00e9e. Endocrine Reviews, 20(6), pp.\u00a0737\u2013751.<br>Hebisha, SA, 2016. L&#039;administration d&#039;un antagoniste de la GnRH le jour de l&#039;hCG dans les cas de FIV\/ICSI avec un protocole agoniste long est efficace pour la protection du SHO. Fertilit\u00e9 et st\u00e9rilit\u00e9 (\u00e9tude r\u00e9trospective).<br>Humaidan, P., Bungum, L., Bungum, M. et Yding Andersen, C., 2005. R\u00e9ponse ovarienne et issue de la grossesse li\u00e9es aux concentrations de LH au niveau folliculaire moyen chez les femmes suivant une procr\u00e9ation m\u00e9dicalement assist\u00e9e. Reproductive Biomedicine Online, 10(5), pp. 679\u2013685.<br>Kolibianakis, EM, Albano, C., Camus, M., et al., 2004. Initiation d&#039;un antagoniste de la GnRH au premier jour de stimulation\u00a0: effet sur les taux hormonaux et le d\u00e9veloppement folliculaire lors des cycles de FIV. Human Reproduction, 19(10), pp.2206\u20132210.<br>Kolibianakis, EM, Albano, C., Kahn, J., et al., 2006. Des taux \u00e9lev\u00e9s de progest\u00e9rone pendant la phase folliculaire sont associ\u00e9s \u00e0 une diminution du taux de grossesse lors des cycles de FIV avec antagonistes de la GnRH. Human Reproduction, 21(10), pp.2622\u20132629.<br>Zeleznik, AJ, 2004. La physiologie de la s\u00e9lection folliculaire. Biologie de la reproduction et endocrinologie, 2(1), p.31.<\/p>","protected":false},"excerpt":{"rendered":"<p>Repenser une hypoth\u00e8se de longue date sur la FIV\u00a0: Cetrotide et Ovitrelle peuvent-ils coexister sans conflit\u00a0? Pendant de nombreuses ann\u00e9es, les sp\u00e9cialistes de la FIV ont cru que l&#039;administration simultan\u00e9e de Cetrotide (c\u00e9tror\u00e9lix, un antagoniste de la GnRH) et d&#039;Ovitrelle (hCG recombinante) serait contre-productive, risquant d&#039;annuler leurs effets respectifs, leurs effets apparemment oppos\u00e9s au cours d&#039;un cycle de FIV. La logique \u00e9tait que Cetrotide supprime [\u2026]<\/p>","protected":false},"author":2,"featured_media":19167,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[114,55],"tags":[],"class_list":["post-19151","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-40-ivf-treatment","category-ivf-treatment"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Co-Administering Cetrotide and Ovitrelle - North Cyprus IVF<\/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.lowcostivf.net\/fr\/latest-news-from-north-cyprus-ivf-center\/co-administering-cetrotide-and-ovitrelle\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Co-Administering Cetrotide and Ovitrelle - North Cyprus IVF\" \/>\n<meta property=\"og:description\" content=\"Rethinking a Long-Held IVF Assumption: Can Cetrotide and Ovitrelle Co-Exist Without Conflict? For many years, IVF specialists believed that administering Cetrotide (cetrorelix, a GnRH antagonist) and Ovitrelle (recombinant hCG) simultaneously would be counterproductive; potentially negating each other\u2019s effects as they apparently have opposing effects in an IVF cycle. The logic was that Cetrotide suppresses endogenous [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.lowcostivf.net\/fr\/latest-news-from-north-cyprus-ivf-center\/co-administering-cetrotide-and-ovitrelle\/\" \/>\n<meta property=\"og:site_name\" content=\"North Cyprus IVF\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/northcyprusivf\/\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/northcyprusivf\/\" \/>\n<meta property=\"article:published_time\" content=\"2025-08-10T18:04:58+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-10T20:40:34+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.lowcostivf.net\/wp-content\/uploads\/2025\/08\/Cetrotide_and_Ovitrelle.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1600\" \/>\n\t<meta property=\"og:image:height\" content=\"900\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Asst. 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