{"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\/de\/latest-news-from-north-cyprus-ivf-center\/co-administering-cetrotide-and-ovitrelle\/","title":{"rendered":"Gleichzeitige Anwendung von Cetrotide und Ovitrelle"},"content":{"rendered":"<p><strong>Eine lange bestehende Annahme zur IVF \u00fcberdenken: K\u00f6nnen Cetrotide und Ovitrelle ohne Konflikte koexistieren?<\/strong><\/p>\n\n\n\n<p>Viele Jahre lang glaubten IVF-Spezialisten, die gleichzeitige Verabreichung von Cetrotide (Cetrorelix, ein GnRH-Antagonist) und Ovitrelle (rekombinantes hCG) sei kontraproduktiv und w\u00fcrde m\u00f6glicherweise die Wirkung des jeweils anderen Medikaments aufheben, da sie in einem IVF-Zyklus offenbar gegens\u00e4tzliche Effekte haben. Die Logik dahinter war, dass Cetrotide die endogene LH-Freisetzung durch eine GnRH-Blockade der Hypophyse unterdr\u00fcckt, w\u00e4hrend hCG LH imitiert, um die endg\u00fcltige Eizellreifung auszul\u00f6sen. Die Sorge war, dass die gleichzeitige Verabreichung zu konkurrierenden Wirkungen und suboptimalen Ergebnissen f\u00fchren k\u00f6nnte.<\/p>\n\n\n\n<p>Mehrere gut durchgef\u00fchrte klinische Studien haben jedoch gezeigt, dass die gleichzeitige Verabreichung weder die Eizellreifung noch die Befruchtungsraten oder Schwangerschaftsergebnisse beeintr\u00e4chtigt (Humaidan et al., 2005; Kolibianakis et al., 2004; Hebisha, 2016; Gunderson et al., 2018).<\/p>\n\n\n\n<p><strong>Warum sie nicht in Konflikt geraten: Unterschiedliche Mechanismen, sich erg\u00e4nzende Aktionen<\/strong><\/p>\n\n\n\n<p>Die Erkl\u00e4rung hierf\u00fcr liegt in ihren unterschiedlichen Wirkorten. Cetrotide wirkt auf Hypophysenebene und unterdr\u00fcckt die GnRH-vermittelte LH- und FSH-Freisetzung (Felberbaum &amp; Diedrich, 1999), w\u00e4hrend hCG (Ovitrelle) die Hypophyse vollst\u00e4ndig umgeht und auf ovarieller Ebene wirkt, indem es direkt an LH\/hCG-Rezeptoren auf Granulosa- und Thekazellen bindet. Diese Bindung aktiviert die Kaskade, die die meiotische Wiederaufnahme und die Eizellreifung einleitet (Zeleznik, 2004). Daher sind die Rezeptorstellen, an denen diese beiden Wirkstoffe binden, unterschiedlich und sie zeigen bei gleichzeitiger Verabreichung keine antagonistischen\/kompetitiven Effekte.<\/p>\n\n\n\n<p>Da hCG nachgeschaltet zur Hypophyse wirkt, beeintr\u00e4chtigt Cetrotide dessen Wirkung auf die Eierst\u00f6cke nicht. Die Weitergabe des Antagonisten bis zum Tag der hCG-Gabe und sogar dar\u00fcber hinaus ist wissenschaftlich belegt und wurde in verschiedenen IVF-Protokollen erfolgreich eingesetzt (Kolibianakis et al., 2006; Hebisha, 2016; Gunderson et al., 2018).<\/p>\n\n\n\n<p>Eine retrospektive Studie (Hebisha, 2016) zeigte, dass die Gabe eines GnRH-Antagonisten am hCG-Triggertag in langen Agonistenzyklen effektiv vor OHSS sch\u00fctzt, ohne die Wirksamkeit der Eizellreifung oder die Triggerleistung zu beeintr\u00e4chtigen. Ebenso stellte ein Artikel in Fertility and Sterility fest, dass die gleichzeitige Gabe eines Antagonisten am hCG-Tag weder die Eizellausbeute noch die Schwangerschaftsrate beeintr\u00e4chtigte.<\/p>\n\n\n\n<p><strong>Warum dies bei \u00e4lteren Patienten wichtig ist: Schutz vor vorzeitiger Luteinisierung<\/strong><\/p>\n\n\n\n<p>Bei Frauen im fortgeschrittenen reproduktiven Alter, insbesondere ab 40 Jahren, ist eine vorzeitige Luteinisierung ein erhebliches Problem. Mit zunehmendem Alter neigen Granulosazellen als Reaktion auf erh\u00f6hte LH-Werte h\u00e4ufiger zu einer vorzeitigen Luteinisierung, wodurch der f\u00fcr eine optimale Eizellreifung und -entnahme erforderliche zeitliche Ablauf gest\u00f6rt wird (Al-Azemi et al., 2011). Durch die Verabreichung von Cetrotide rund um den hCG-Ausl\u00f6ser erhalten \u00c4rzte zus\u00e4tzlichen Schutz: Der Antagonist unterdr\u00fcckt vorzeitige endogene LH-Anstiege, die eine vorzeitige Luteinisierung ausl\u00f6sen k\u00f6nnten, w\u00e4hrend hCG \u00fcber die direkte Aktivit\u00e4t der ovariellen Rezeptoren weiterhin effektiv die Reifung induziert (Humaidan et al., 2005; Hebisha, 2016).<\/p>\n\n\n\n<p>Diese kombinierte Strategie tr\u00e4gt dazu bei, sowohl den Zeitpunkt als auch die Qualit\u00e4t der Eizellreifung zu erhalten, insbesondere bei Patientinnen mit erh\u00f6htem Risiko einer vorzeitigen Luteinisierung.<\/p>\n\n\n\n<p><strong>Zusammenfassend: <\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list has-small-font-size\">\n<li style=\"font-size:16px\">Alte Annahme widerlegt: Klinische Beweise best\u00e4tigen, dass die gleichzeitige Verabreichung von Cetrotide und hCG die IVF-Ergebnisse nicht beeintr\u00e4chtigt.<\/li>\n\n\n\n<li style=\"font-size:16px\">Unterschiedliche Mechanismen, wirksame Synergie: Cetrotide wirkt an der Hypophyse; hCG wirkt am Eierstock, daher keine Interferenz.<\/li>\n\n\n\n<li style=\"font-size:16px\">Hohe Relevanz f\u00fcr \u00e4ltere Patienten: Dieser Ansatz hilft, einer vorzeitigen Luteinisierung vorzubeugen und gleichzeitig die Triggerwirksamkeit aufrechtzuerhalten.<\/li>\n<\/ul>\n\n\n\n<p><strong>Verweise<\/strong><\/p>\n\n\n\n<p>Al-Azemi, M., Kyrou, D., Kolibianakis, EM, et al., 2011. Vorzeitige Luteinisierung in GnRH-Antagonistenzyklen: ein Risikofaktor f\u00fcr ein verschlechtertes Ergebnis nach IVF? Human Reproduction, 26(7), S. 1839\u20131845.<br>Felberbaum, R. &amp; Diedrich, K., 1999. Gonadotropin-Releasing-Hormon-Antagonisten: eine neue \u00c4ra der kontrollierten ovariellen Stimulation. Endocrine Reviews, 20(6), S. 737\u2013751.<br>Hebisha, SA, 2016. Die Verabreichung eines GnRH-Antagonisten am Tag der hCG-Gabe bei IVF\/ICSI mit langem Agonistenprotokoll ist wirksam zum Schutz vor OHSS. Fruchtbarkeit und Sterilit\u00e4t (Retrospektive Studie).<br>Humaidan, P., Bungum, L., Bungum, M. &amp; Yding Andersen, C., 2005. Ovarielle Reaktion und Schwangerschaftsausgang im Zusammenhang mit LH-Konzentrationen in der Mitte des Follikels bei Frauen, die sich einer assistierten Reproduktion unterziehen. Reproductive Biomedicine Online, 10(5), S. 679\u2013685.<br>Kolibianakis, EM, Albano, C., Camus, M., et al., 2004. Einleitung eines GnRH-Antagonisten am ersten Tag der Stimulation: Wirkung auf Hormonspiegel und Follikelentwicklung in IVF-Zyklen. Human Reproduction, 19(10), S. 2206\u20132210.<br>Kolibianakis, EM, Albano, C., Kahn, J., et al., 2006. Erh\u00f6hte Progesteronspiegel in der Follikelphase sind mit einer verringerten Schwangerschaftsrate in IVF-Zyklen mit GnRH-Antagonisten verbunden. Human Reproduction, 21(10), S. 2622\u20132629.<br>Zeleznik, AJ, 2004. Die Physiologie der Follikelselektion. Reproduktive Biologie und Endokrinologie, 2(1), S. 31.<\/p>","protected":false},"excerpt":{"rendered":"<p>Eine lange bestehende IVF-Annahme \u00fcberdacht: K\u00f6nnen Cetrotide und Ovitrelle ohne Konflikte koexistieren? Viele Jahre lang glaubten IVF-Spezialisten, dass die gleichzeitige Verabreichung von Cetrotide (Cetrorelix, ein GnRH-Antagonist) und Ovitrelle (rekombinantes hCG) kontraproduktiv w\u00e4re und sich m\u00f6glicherweise gegenseitig aufheben w\u00fcrde, da sie in einem IVF-Zyklus offenbar gegens\u00e4tzliche Wirkungen haben. Die Logik dahinter war, dass Cetrotide endogene [\u2026] unterdr\u00fcckt.<\/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\/de\/latest-news-from-north-cyprus-ivf-center\/co-administering-cetrotide-and-ovitrelle\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\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\/de\/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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