{"id":49344,"date":"2025-09-12T09:04:49","date_gmt":"2025-09-12T07:04:49","guid":{"rendered":"https:\/\/ellipse.prbb.org\/?p=49344"},"modified":"2025-09-12T09:05:00","modified_gmt":"2025-09-12T07:05:00","slug":"els-oocits-humans-sapaguen-per-protegir-se","status":"publish","type":"post","link":"https:\/\/ellipse.prbb.org\/ca\/els-oocits-humans-sapaguen-per-protegir-se\/","title":{"rendered":"Els o\u00f2cits humans s&#8217;apaguen per protegir-se"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Aquesta imatge, de <strong>Gabriele Zaffagnini <\/strong>del <a rel=\"noreferrer noopener\" href=\"http:\/\/www.crg.eu\/\" target=\"_blank\">Centre de Regulaci\u00f3 Gen\u00f2mica (CRG)<\/a>, mostra un <strong>o\u00f2cit hum\u00e0 <\/strong>fixat i immunotenyit. <strong>Les mitocondries <\/strong>es mostren en taronja i el <strong>citoesquelet d&#8217;actina<\/strong> es mostra en verd. <strong>L&#8217;ADN <\/strong>es mostra en blau clar.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La imatge \u00e9s part d&#8217;un <a rel=\"noreferrer noopener\" href=\"https:\/\/www.crg.eu\/en\/news\/human-eggs-power-down-protect-themselves\" target=\"_blank\">estudi recent<\/a> realitzat pel <a href=\"https:\/\/ellipse.prbb.org\/ca\/no-pots-tenir-un-bebe-vell\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>laboratori<\/strong> d&#8217;Elvan B\u00f6ke <\/a>que va mostrar que els \u00f2vuls humans alenteixen l&#8217;activitat dels seus sistemes interns d&#8217;eliminaci\u00f3 de deixalles a mesura que maduren.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Totes les c\u00e8l\u00b7lules necessiten reciclar prote\u00efnes per mantenir l&#8217;ordre, per\u00f2 fer-ho tamb\u00e9 crea <a href=\"https:\/\/ellipse.prbb.org\/ca\/estres-oxidatiu-i-cicle-cel%c2%b7lular-dos-camins-encreuats\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>esp\u00e8cies reactives d&#8217;oxigen (ROS),<\/strong> que poden causar danys<\/a>. Fent servir sondes fluorescents en m\u00e9s <strong>de 100 \u00f2vuls de 21 donants sans<\/strong>, l&#8217;equip investigador va rastrejar l&#8217;activitat dels lisosomes, el proteasoma i les mitoc\u00f2ndries en els \u00f2vuls vius, i van trobar que era m\u00e9s baixa que en les c\u00e8l\u00b7lules circumdants.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Juntament amb <a rel=\"noreferrer noopener\" href=\"https:\/\/ellipse.prbb.org\/ca\/una-sofisticada-xarxa-deliminacio-de-residus-mante-els-ovocits-joves-durant-decades\/\" target=\"_blank\">un estudi anterior del mateix laboratori<\/a>, aquest treball mostra com els \u00f2vuls immadurs amb els quals neixen les dones (al voltant d&#8217;un a dos milions) aconsegueixen mantenir-se prou saludables durant m\u00e9s de cinquanta anys com per possibilitar l&#8217;embar\u00e0s &#8211; mantenint el seu <a rel=\"noreferrer noopener\" href=\"https:\/\/ellipse.prbb.org\/bringing-metabolism-to-the-spotlight-of-development\/\" target=\"_blank\">metabolisme<\/a>, i els seus efectes secundaris problem\u00e0tics, baixos.<\/p>\n\n\n\n<div style=\"height:49px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Aquesta imatge, de Gabriele Zaffagnini del Centre de Regulaci\u00f3 Gen\u00f2mica (CRG), mostra un o\u00f2cit hum\u00e0 fixat i immunotenyit. Les mitocondries es mostren en taronja i el citoesquelet d&#8217;actina es mostra en verd. L&#8217;ADN es mostra en blau clar. La imatge \u00e9s part d&#8217;un estudi recent realitzat pel laboratori d&#8217;Elvan B\u00f6ke que va mostrar que els [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":48979,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[26],"tags":[269,265,517,686,717],"new-type":[40],"class_list":["post-49344","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-recerca","tag-biologia-cellular","tag-crg-ca","tag-embaras","tag-embrio","tag-envelliment","new-type-foto-de-la-setmana"],"acf":[],"_links":{"self":[{"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/posts\/49344","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\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/comments?post=49344"}],"version-history":[{"count":2,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/posts\/49344\/revisions"}],"predecessor-version":[{"id":49346,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/posts\/49344\/revisions\/49346"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/media\/48979"}],"wp:attachment":[{"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/media?parent=49344"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/categories?post=49344"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/tags?post=49344"},{"taxonomy":"new-type","embeddable":true,"href":"https:\/\/ellipse.prbb.org\/ca\/wp-json\/wp\/v2\/new-type?post=49344"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}