{"id":2212,"date":"2018-05-08T05:17:06","date_gmt":"2018-05-08T02:17:06","guid":{"rendered":"http:\/\/mereusanatosi.ro\/wp\/?p=2212"},"modified":"2018-05-10T08:15:36","modified_gmt":"2018-05-10T05:15:36","slug":"au-fost-create-primele-structuri-embrionare-cu-ajutorul-unor-celule-stem","status":"publish","type":"post","link":"https:\/\/mereusanatosi.ro\/wp\/2018\/05\/08\/au-fost-create-primele-structuri-embrionare-cu-ajutorul-unor-celule-stem\/","title":{"rendered":"Au fost create primele structuri embrionare cu ajutorul unor celule stem"},"content":{"rendered":"<figure id=\"attachment_2214\" aria-describedby=\"caption-attachment-2214\" style=\"width: 960px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" class=\"wp-image-2214 size-full\" src=\"http:\/\/mereusanatosi.ro\/wp\/wp-content\/uploads\/2018\/05\/celule-stem-800x445.jpg\" alt=\"Surs\u0103 foto: http:\/\/femalefirsthospital.com\" width=\"960\" height=\"568\" srcset=\"https:\/\/mereusanatosi.ro\/wp\/wp-content\/uploads\/2018\/05\/celule-stem-800x445.jpg 960w, https:\/\/mereusanatosi.ro\/wp\/wp-content\/uploads\/2018\/05\/celule-stem-800x445-300x178.jpg 300w, https:\/\/mereusanatosi.ro\/wp\/wp-content\/uploads\/2018\/05\/celule-stem-800x445-768x454.jpg 768w\" sizes=\"(max-width: 960px) 100vw, 960px\" \/><figcaption id=\"caption-attachment-2214\" class=\"wp-caption-text\">Surs\u0103 foto: http:\/\/femalefirsthospital.com<\/figcaption><\/figure>\n<p><strong>\u00a0<\/strong><\/p>\n<p>Potrivit unui studiu publicat recent \u00een Jurnalul on-line \u201eNature\u201d, oamenii de \u0219tiin\u021b\u0103 de la Universitatea Maastricht din Olanda, <strong>au creat \u00een premier\u0103 mondial\u0103 &#8220;structuri embrionare&#8221;, foarte asem\u0103n\u0103toare embrionilor din primele stadii de dezvoltare, cu ajutorul unor celule stem de la \u015foareci, f\u0103r\u0103 s\u0103 recurg\u0103 la fecundare.<\/strong> Cercet\u0103torii sunt de p\u0103rere c\u0103 descoperirea lor \u00eei va ajuta s\u0103 \u00een\u0163eleag\u0103 mai bine procesul prin care embrionul se implanteaz\u0103 \u00een mucoasa uterin\u0103 \u0219i modul \u00een care se formeaz\u0103 placenta.<\/p>\n<p>Dup\u0103 ce sunt implantate \u00een uter, sferele celulare (ob\u0163inute pe baza a dou\u0103 tipuri de celule stem de \u015foareci), declan\u015feaz\u0103 procese de remodelare, asem\u0103n\u0103toare cu cele observate \u00een timpul implant\u0103rii embrionilor \u00een pere\u0163ii uterini. \u00cen urma studiului, speciali\u0219tii au observat c\u0103 la c\u00e2teva zile dup\u0103 fecundare, ovulul de mamifere se dezvolt\u0103 \u00een mod normal \u00eentr-un blastocist, care corespunde embrionului din primele stadii de dezvoltare.<\/p>\n<p>Blastocistul reprezint\u0103 o structur\u0103 sferic\u0103, alc\u0103tuit\u0103 dintr-un strat de celule externe, care \u00eenconjoar\u0103 o cavitate umplut\u0103 cu lichid ce con\u0163ine un grup de celule embrionare.<\/p>\n<p>Este pentru prima dat\u0103 c\u00e2nd cercet\u0103torii au reu\u0219it s\u0103 eviden\u0163ieze mecanismele moleculare ale implant\u0103rii, iar aceste rezultate i-ar putea ajuta s\u0103 \u00een\u0163eleag\u0103 mai bine anumite aspecte ale infertilit\u0103\u0163ii \u015fi s\u0103 amelioreze \u00a0rezultatele reproducerii asistate.<\/p>\n<p><strong>\u00a0<\/strong>\u201eCu toate acestea, ob\u0163inerea unor rezultate comparabile cu celulele umane, r\u0103m\u00e2ne o provocare major\u0103 pentru cercet\u0103torii care \u00ee\u0219i doresc s\u0103 dezvolte embrioni umani \u00een aceast\u0103 manier\u0103\u201d, afirm\u0103 Harry Leith, cercet\u0103tor \u00een cadrul London Institute of Medical Sciences.<\/p>\n<p>&nbsp;<\/p>\n<p>Surs\u0103: https:\/\/www.nature.com\/articles\/s41586-018-0051-0<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u00a0 Potrivit unui studiu publicat recent \u00een Jurnalul on-line \u201eNature\u201d, oamenii de \u0219tiin\u021b\u0103 de la Universitatea Maastricht din Olanda, au<\/p>\n","protected":false},"author":1,"featured_media":2214,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[101,11],"tags":[471,470,469],"_links":{"self":[{"href":"https:\/\/mereusanatosi.ro\/wp\/wp-json\/wp\/v2\/posts\/2212"}],"collection":[{"href":"https:\/\/mereusanatosi.ro\/wp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mereusanatosi.ro\/wp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mereusanatosi.ro\/wp\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mereusanatosi.ro\/wp\/wp-json\/wp\/v2\/comments?post=2212"}],"version-history":[{"count":1,"href":"https:\/\/mereusanatosi.ro\/wp\/wp-json\/wp\/v2\/posts\/2212\/revisions"}],"predecessor-version":[{"id":2215,"href":"https:\/\/mereusanatosi.ro\/wp\/wp-json\/wp\/v2\/posts\/2212\/revisions\/2215"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mereusanatosi.ro\/wp\/wp-json\/wp\/v2\/media\/2214"}],"wp:attachment":[{"href":"https:\/\/mereusanatosi.ro\/wp\/wp-json\/wp\/v2\/media?parent=2212"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mereusanatosi.ro\/wp\/wp-json\/wp\/v2\/categories?post=2212"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mereusanatosi.ro\/wp\/wp-json\/wp\/v2\/tags?post=2212"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}