{"id":212141,"date":"2023-01-15T15:19:09","date_gmt":"2023-01-15T15:19:09","guid":{"rendered":"https:\/\/bm.dev.synology.me\/?p=212141"},"modified":"2023-01-15T15:19:09","modified_gmt":"2023-01-15T15:19:09","slug":"oamenii-de-stiinta-au-atins-o-etapa-importanta-in-invatarea-modului-de-inversare-a-imbatranirii","status":"publish","type":"post","link":"https:\/\/bm.dev.synology.me\/?p=212141","title":{"rendered":"Oamenii de \u015ftiin\u0163\u0103 au atins o etap\u0103 important\u0103 \u00een \u00eenv\u0103\u0163area modului de inversare a \u00eemb\u0103tr\u00e2nirii"},"content":{"rendered":"<p>\n<span style=\"font-size: 12px;\">Dup\u0103 13 ani de cercet\u0103ri, Dr. David Sinclair \u015fi colegii s\u0103i au r\u0103spuns la \u00eentrebarea ce determin\u0103 \u00eemb\u0103tr\u00e2nirea.<\/span><\/p>\n<p>\n\u00centr-un studiu publicat la 12 ianuarie \u00een Cell, Sinclair, profesor de genetic\u0103 \u015fi co-director al Centrului Paul F. Glenn pentru cercetarea biologiei \u00eemb\u0103tr\u00e2nirii de la Harvard Medical School, descrie un ceas de \u00eemb\u0103tr\u00e2nire revolu\u0163ionar care poate accelera sau inversa \u00eemb\u0103tr\u00e2nirea celulelor.<\/p>\n<p>\nOamenii de \u015ftiin\u0163\u0103 care studiaz\u0103 \u00eemb\u0103tr\u00e2nirea au dezb\u0103tut ce determin\u0103 procesul de senescen\u0163\u0103 \u00een celule \u015fi s-au concentrat \u00een principal asupra muta\u0163iilor din ADN care, \u00een timp, pot da peste cap opera\u0163iunile normale ale unei celule \u015fi pot declan\u015fa procesul de moarte celular\u0103. Dar aceast\u0103 teorie nu a fost sus\u0163inut\u0103 de faptul c\u0103 celulele persoanelor \u00een v\u00e2rst\u0103 nu erau adesea pline de muta\u0163ii \u015fi c\u0103 animalele sau persoanele care ad\u0103postesc o \u00eenc\u0103rc\u0103tur\u0103 mai mare de celule cu muta\u0163ii nu par s\u0103 \u00eemb\u0103tr\u00e2neasc\u0103 prematur.<\/p>\n<p>\nPrin urmare, Sinclair s-a concentrat pe o alt\u0103 parte a genomului, numit\u0103 epigenom. Deoarece toate celulele au aceea\u015fi schem\u0103 de ADN, epigenomul este cel care face ca celulele pielii s\u0103 se transforme \u00een celule de piele \u015fi celulele creierului \u00een celule de creier. El face acest lucru prin furnizarea de instruc\u0163iuni diferite pentru diferite celule cu privire la genele pe care trebuie s\u0103 le activeze \u015fi la cele pe care trebuie s\u0103 le p\u0103streze t\u0103cute, potrivit Time.<\/p>\n<p>\nEpigenetica este similar\u0103 instruc\u0163iunilor pe care croitoresele se bazeaz\u0103 de la tipare pentru a crea c\u0103m\u0103\u015fi, pantaloni sau jachete. \u0162es\u0103tura de plecare este aceea\u015fi, dar modelul determin\u0103 forma \u015fi func\u0163ia pe care o ia articolul final de \u00eembr\u0103c\u0103minte. \u00cen cazul celulelor, instruc\u0163iunile epigenetice conduc la celule cu structuri fizice \u015fi func\u0163ii diferite, \u00eentr-un proces numit diferen\u0163iere.<\/p>\n<p>\n\u00cen lucrarea Cell, Sinclair \u015fi echipa sa raporteaz\u0103 c\u0103 nu numai c\u0103 pot \u00eemb\u0103tr\u00e2ni \u015foarecii \u00eentr-un interval de timp accelerat, dar pot, de asemenea, s\u0103 inverseze efectele acestei \u00eemb\u0103tr\u00e2niri \u015fi s\u0103 redea animalelor unele dintre semnele biologice ale tinere\u0163ii.<\/p>\n<p>\n<a href=\"https:\/\/www.mediafax.ro\/stiinta-sanatate\/oamenii-de-stiinta-au-atins-o-etapa-importanta-in-invatarea-modului-de-inversare-a-imbatranirii-21505941?fbclid=IwAR0yiYCD8sQRDrYGGa6jZQUgOFidfTiZdLE3U1Y3yW9Uds1vi3PNI_Lw9CI\">Cititi mai multe pe www.mediafax.ro<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dup\u0103 13 ani de cercet\u0103ri, Dr. David Sinclair \u015fi colegii s\u0103i au r\u0103spuns la \u00eentrebarea ce determin\u0103 \u00eemb\u0103tr\u00e2nirea. \u00centr-un studiu publicat la 12 ianuarie \u00een Cell, Sinclair, profesor de genetic\u0103 \u015fi co-director al Centrului Paul F. Glenn pentru cercetarea biologiei \u00eemb\u0103tr\u00e2nirii de la Harvard Medical School, descrie un ceas de \u00eemb\u0103tr\u00e2nire revolu\u0163ionar care poate accelera [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[510],"tags":[10796,6266,8864],"class_list":["post-212141","post","type-post","status-publish","format-standard","hentry","category-actualitate","tag-imbatranire","tag-oameni","tag-stiinta"],"_links":{"self":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts\/212141","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=212141"}],"version-history":[{"count":0,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=\/wp\/v2\/posts\/212141\/revisions"}],"wp:attachment":[{"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=212141"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=212141"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bm.dev.synology.me\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=212141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}