{"id":31763,"date":"2022-08-19T16:03:36","date_gmt":"2022-08-19T14:03:36","guid":{"rendered":"https:\/\/ellipse.prbb.org\/?p=31763"},"modified":"2022-08-19T16:03:38","modified_gmt":"2022-08-19T14:03:38","slug":"com-mantenen-els-ovocits-la-seva-funcionalitat-durant-els-anys-de-latencia","status":"publish","type":"post","link":"https:\/\/ellipse.prbb.org\/ca\/com-mantenen-els-ovocits-la-seva-funcionalitat-durant-els-anys-de-latencia\/","title":{"rendered":"Com mantenen els ov\u00f2cits la seva funcionalitat durant els anys de lat\u00e8ncia?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Els <strong>ov\u00f2cits<\/strong> \u2013els <strong>\u00f2vuls immadurs<\/strong>\u2013 es comencen a <a rel=\"noreferrer noopener\" href=\"https:\/\/ellipse.prbb.org\/ca\/apagar-i-encendre-el-cromosoma-x\/\" target=\"_blank\">formar en el fetus<\/a> i es poden mantenir als ovaris <a rel=\"noreferrer noopener\" href=\"https:\/\/ellipse.prbb.org\/ca\/lenvelliment-podria-influir-negativament-en-els-passos-finals-del-desenvolupament-dels-ovuls\/\" target=\"_blank\">fins a 50 anys<\/a>. Malgrat aquest llarg <strong>per\u00edode de lat\u00e8ncia<\/strong>, un cop maduren, encara mantenen la <strong>capacitat reproductiva<\/strong>. El <a rel=\"noreferrer noopener\" href=\"https:\/\/www.crg.eu\/\" target=\"_blank\">Centre de Regulaci\u00f3 Gen\u00f2mica (CRG)<\/a> ha liderat una <a rel=\"noreferrer noopener\" href=\"https:\/\/www.crg.eu\/en\/news\/human-eggs-remain-healthy-decades-putting-batteries-standby-mode\" target=\"_blank\">recerca<\/a> que estudia quines s\u00f3n les vies metab\u00f2liques implicades en l\u2019obtenci\u00f3 d\u2019energia durant l\u2019estat de lat\u00e8ncia.<\/p>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">Un equilibri entre longevitat i funci\u00f3<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Habitualment \u00e9s el <strong>complex enzim\u00e0tic I<\/strong> l\u2019encarregat d\u2019iniciar la producci\u00f3 d\u2019energia als mitocondris, per\u00f2 l\u2019estudi del CRG revela que, als ov\u00f2cits, aquest complex est\u00e0 <strong>gaireb\u00e9 absent<\/strong>. Mitjan\u00e7ant t\u00e8cniques <strong>prote\u00f2miques<\/strong> i <strong>bioqu\u00edmiques<\/strong> i l\u2019<strong>an\u00e0lisi d\u2019imatges en viu<\/strong>, les investigadores han reparat que, tant en <strong>ov\u00f2cits humans<\/strong> com en <strong><a rel=\"noreferrer noopener\" href=\"https:\/\/ellipse.prbb.org\/ca\/estudiant-la-divisio-cel%c2%b7lular-en-granotes\/\" target=\"_blank\">granotes <em>Xenopus<\/em><\/a><\/strong>, els mitocondris dels ov\u00f2cits usen <strong>vies metab\u00f2liques alternatives<\/strong> per a generar l\u2019energia suficient durant l\u2019estat de lat\u00e8ncia.<\/p>\n\n\n\n<div style=\"height:23px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p><em>\u201cCom a estrat\u00e8gia de manteniment a llarg termini, seria com posar el motor en punt mort. Aix\u00f2 representa un nou paradigma mai vist en c\u00e8l\u00b7lules animals\u201d<\/em><br><strong>Aida Rodr\u00edguez (CRG)<\/strong><\/p><\/blockquote>\n\n\n\n<div style=\"height:23px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">Els resultats tamb\u00e9 obren noves portes a recerques pel que fa la<strong> infertilitat femenina<\/strong>. \u201cUn de cada quatre casos d\u2019infertilitat femenina no t\u00e9 explicaci\u00f3, fet que apunta a una gran <strong><a rel=\"noreferrer noopener\" href=\"https:\/\/ellipse.prbb.org\/ca\/com-incorporar-la-perspectiva-de-genere-en-la-nostra-investigacio\/\" target=\"_blank\">bretxa de coneixement<\/a><\/strong> en la comprensi\u00f3 de la reproducci\u00f3 femenina. La nostra ambici\u00f3 \u00e9s descobrir estrat\u00e8gies (com la manca del complex I) que empren els ov\u00f2cits per a mantenir-se saludables durant molts anys\u201d, comenta l\u2019<strong><a rel=\"noreferrer noopener\" href=\"https:\/\/ellipse.prbb.org\/ca\/elvan-boke-seleccionada-per-al-young-investigator-programme-de-lorganitzacio-europea-de-biologia-molecular\/\" target=\"_blank\">Elvan Br\u00f6ke<\/a><\/strong>, autora principal de l\u2019article i cap del grup al programa de <a rel=\"noreferrer noopener\" href=\"https:\/\/www.crg.eu\/en\/elvan-boke\" target=\"_blank\">Biologia Cel\u00b7lular i del Desenvolupament<\/a> del CRG.<\/p>\n\n\n\n<div style=\"height:46px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>El CRG ha dut a terme un estudi on es revelen quines s\u00f3n les vies metab\u00f2liques que usen els ov\u00f2cits durant l\u2019estat de lat\u00e8ncia que els permeten mantenir la seva capacitat reproductiva. <\/p>\n","protected":false},"author":29,"featured_media":31764,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[26],"tags":[269,297,265],"new-type":[35],"class_list":["post-31763","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-recerca","tag-biologia-cellular","tag-biologia-molecular","tag-crg-ca","new-type-noticies"],"acf":[],"_links":{"self":[{"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/posts\/31763","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/users\/29"}],"replies":[{"embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/comments?post=31763"}],"version-history":[{"count":17,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/posts\/31763\/revisions"}],"predecessor-version":[{"id":31807,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/posts\/31763\/revisions\/31807"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/media\/31764"}],"wp:attachment":[{"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/media?parent=31763"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/categories?post=31763"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/tags?post=31763"},{"taxonomy":"new-type","embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/new-type?post=31763"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}