BBC Science Focus<\/a> a analizat modul \u00een care celulele responsabile de pigmentarea p\u0103rului \u0219i a pielii se \u201eautodistrug\u201d atunci c\u00e2nd sunt deteriorate, ca parte a eforturilor organismului nostru de a ne proteja de cancer.<\/p>\nOamenii de \u0219tiin\u021b\u0103 au descoperit c\u0103, \u00een cazul anumitor tipuri de leziuni, aceste celule produc\u0103toare de pigment se opresc pur \u0219i simplu din func\u021bionare, \u00een loc s\u0103 continue s\u0103 se divid\u0103.<\/p>\n
Cum albe\u0219te p\u0103rul c\u00e2nd ap\u0103r\u0103 corpul<\/p>\n
Aceast\u0103 alegere \u00eempiedic\u0103 celulele defecte s\u0103 r\u0103sp\u00e2ndeasc\u0103 muta\u021bii periculoase, dar, \u00een timp, \u00eenseamn\u0103 \u0219i c\u0103 r\u0103m\u00e2n mai pu\u021bine celule produc\u0103toare de pigment, ceea ce duce la apari\u021bia p\u0103rului alb.<\/p>\n
Oamenii de \u0219tiin\u021b\u0103 au cercetat \u00eendelung modalit\u0103\u021bi de a opri autodistrugerea celulelor pigmentare, \u00een \u00eencercarea de a preveni apari\u021bia p\u0103rului alb, dar noile descoperiri sugereaz\u0103 c\u0103 p\u0103rul alb este un semn al unei importante ap\u0103r\u0103ri \u00eempotriva cancerului.<\/p>\n
\u201e[Acest studiu] redefine\u0219te \u00eenc\u0103run\u021birea p\u0103rului \u0219i melanomul nu ca evenimente f\u0103r\u0103 leg\u0103tur\u0103 \u00eentre ele, ci ca rezultate divergente ale r\u0103spunsurilor la stres ale celulelor stem\u201d, a declarat prof. Emi Nishimura de la Universitatea din Tokyo, care a condus studiul.<\/p>\n
Studiu pe \u0219oareci<\/p>\n
Echipa din Tokyo a f\u0103cut aceast\u0103 descoperire \u00een timp ce studia celulele stem melanocitare la \u0219oareci \u2013 celulele care produc \u00een mod normal pigmentul p\u0103rului. Ei au descoperit c\u0103 aceste celule melanocitare se sacrificau doar atunci c\u00e2nd ADN-ul lor suferea o \u201eruptur\u0103 dubl\u0103\u201d, practic o rupere complet\u0103 a ambelor p\u0103r\u021bi ale spiralei ADN-ului. Dar c\u00e2nd celulele erau expuse la alte tipuri de stres, cum ar fi lumina ultraviolet\u0103 sau agen\u021bii cancerigeni, ele nu se autodistrugeau. \u00cen schimb, au supravie\u021buit \u0219i au continuat s\u0103 se divid\u0103, permi\u021b\u00e2nd acumularea muta\u021biilor \u0219i pun\u00e2nd poten\u021bial bazele cancerului.<\/p>\n
Aceast\u0103 reac\u021bie dubl\u0103 \u2013 celulele se sacrific\u0103 \u00een unele scenarii, dar se aga\u021b\u0103 de via\u021b\u0103 \u00een altele \u2013 ar putea ajuta la dezv\u0103luirea motivului pentru care p\u0103rul gri \u0219i cancerul de piele devin mai frecvente odat\u0103 cu \u00eenaintarea \u00een v\u00e2rst\u0103.<\/p>\n
Cercet\u0103torii spun c\u0103 \u00een\u021belegerea \u2013 \u0219i, \u00een cele din urm\u0103, controlul \u2013 acestei reac\u021bii ar putea deschide calea c\u0103tre noi metode de eliminare a celulelor cu risc ridicat \u00eenainte ca acestea s\u0103 devin\u0103 canceroase.<\/p>\n","protected":false},"excerpt":{"rendered":"Noul studiu arat\u0103 c\u0103 firele de p\u0103r c\u0103runt ar putea fi cicatricile l\u0103sate de lupta corpului \u00eempotriva cancerului.…\n","protected":false},"author":2,"featured_media":40582,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[2478,32,33,532,19432,31,11424,36,37,27,34,35,19433,25,19434,41,40,38,39,26,2475,28,29,30],"class_list":{"0":"post-49382","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-titluri","8":"tag-boala","9":"tag-breaking-news","10":"tag-breakingnews","11":"tag-cancer","12":"tag-cancer-de-piele","13":"tag-cele-mai-populare-subiecte","14":"tag-cercetare","15":"tag-featured-news","16":"tag-featurednews","17":"tag-headlines","18":"tag-latest-news","19":"tag-latestnews","20":"tag-melanom","21":"tag-news","22":"tag-par-cirunt","23":"tag-ro","24":"tag-romana","25":"tag-romania","26":"tag-romanian","27":"tag-stiri","28":"tag-studiu","29":"tag-titluri","30":"tag-top-stories","31":"tag-topstories"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@ro\/115598332288635675","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/posts\/49382","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/comments?post=49382"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/posts\/49382\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/media\/40582"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/media?parent=49382"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/categories?post=49382"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/ro\/wp-json\/wp\/v2\/tags?post=49382"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}