{"id":677010,"date":"2026-02-15T23:26:03","date_gmt":"2026-02-15T23:26:03","guid":{"rendered":"https:\/\/microscopemedia.com\/?p=677010"},"modified":"2026-02-15T23:26:03","modified_gmt":"2026-02-15T23:26:03","slug":"efectele-dezastrului-nuclear-de-la-cernobil-se-regasesc-si-in-randul-copiilor-ai-caror-parinti-au-fost-expusi-la-radiatii-ce-arata-un-studiu","status":"publish","type":"post","link":"https:\/\/microscopemedia.com\/?p=677010","title":{"rendered":"Efectele dezastrului nuclear de la Cernob\u00eel se reg\u0103sesc \u0219i \u00een r\u00e2ndul copiilor ai c\u0103ror p\u0103rin\u021bi au fost expu\u0219i la radia\u021bii. Ce arat\u0103 un studiu"},"content":{"rendered":"<div><img decoding=\"async\" src=\"https:\/\/microscopemedia.com\/wp-content\/uploads\/2026\/02\/efectele-dezastrului-nuclear-de-la-cernobil-se-regasesc-si-in-randul-copiilor-ai-caror-parinti-au-fost-expusi-la-radiatii-ce-arata-un-studiu.jpg\" class=\"ff-og-image-inserted\"><\/div>\n<p id=\"p-0\">O nou\u0103 cercetare realizat\u0103 de oamenii de \u0219tiin\u021b\u0103 relev\u0103 c\u0103 leziunile ADN cauzate de radia\u021biile ionizante (IR) emise \u00een urma dezastrului nuclear de la Cernob\u00eel din 1986 apar la copiii persoanelor expuse ini\u021bial.<\/p>\n<p id=\"p-1\">Prin aceast\u0103 descoperire, este pentru prima dat\u0103 c\u00e2nd se stabile\u0219te \u00een mod clar o astfel de leg\u0103tur\u0103 transgenera\u021bional\u0103.<\/p>\n<p id=\"p-2\">Cercet\u0103torii, condu\u0219i de o ochip\u0103 de la Universitatea din Bonn, Germania, au vrut s\u0103 afle dac\u0103 expunerea la radia\u021bii ionizante (IR) la care au fost supu\u0219i p\u0103rin\u021bii poate l\u0103sa semn\u0103turi genetice detectabile \u00een urma\u0219ii lor.<\/p>\n<p id=\"p-3\">Cercet\u0103torii au c\u0103utat ceea ce se nume\u0219te muta\u021bii de novo grupate (cDNM), adic\u0103 dou\u0103 sau mai multe muta\u021bii aflate \u00een imediata apropiere, care sunt descoperite la copii, nu \u0219i la p\u0103rin\u021bi. Acestea ar fi muta\u021bii rezultate din rupturi ale ADN-ului parental cauzate de expunerea la radia\u021bii, scrie <span><a href=\"https:\/\/www.sciencealert.com\/dna-mutations-discovered-in-the-children-of-chernobyl-workers\" target=\"_blank\" rel=\"noopener\">Science Alert<\/a><\/span>.<\/p>\n<h2 id=\"chapter-0\">Cum s-a ajuns la aceast\u0103 constatare<\/h2>\n<p id=\"p-4\">P\u00e2n\u0103 a ajunge la aceast\u0103 concluzie, cercet\u0103torii <strong>au comparat trei grupuri<\/strong>: 110 copii ai lucr\u0103torilor germani probabil expu\u0219i la radia\u021bii, 130 de copii ai participan\u021bilor la cur\u0103\u021barea zonei Cernob\u00eel \u0219i 1.275 de descenden\u021bi ai p\u0103rin\u021bilor neexpu\u0219i la radia\u021bii.<\/p>\n<p id=\"p-5\">Dup\u0103 secven\u021bierea complet\u0103 a genomului, copiii ai c\u0103ror ta\u021bi au fost expu\u0219i la radia\u021bii au prezentat mai multe muta\u021bii de tip \u201eclustered\u201d comparativ cu copii ai p\u0103rin\u021bilor neexpu\u0219i. Num\u0103rul mediu de cDNMs a fost cel mai mare \u00een cohorta Cernob\u00eel, iar cel mai sc\u0103zut \u00een cohorta copiilor ai c\u0103ror p\u0103rin\u021bi nu au fost expu\u0219i la radia\u021bii.<\/p>\n<p id=\"p-6\">Mai mult, o doz\u0103 mai mare de radia\u021bii pentru p\u0103rinte tindea s\u0103 \u00eensemne un num\u0103r mai mare de clustere la copil.<\/p>\n<p id=\"p-7\">\u201eAm constatat o cre\u0219tere semnificativ\u0103 a num\u0103rului de cDNM la descenden\u021bii p\u0103rin\u021bilor iradia\u021bi \u0219i o asociere poten\u021bial\u0103 \u00eentre estim\u0103rile dozei \u0219i num\u0103rul de cDNM la descenden\u021bii respectivi. \u00cen ciuda incertitudinii privind natura \u0219i cantitatea exact\u0103 a IR implicate, studiul actual este primul care furnizeaz\u0103 dovezi privind existen\u021ba unui efect transgenera\u021bional al expunerii paterne prelungite la IR \u00een doze mici asupra genomului uman\u201d, este concluzia autorilor studiului.<\/p>\n<p id=\"p-8\">Totu\u0219i, ace\u0219tia admit c\u0103 au fost \u0219i anumite limit\u0103ri \u00een realizarea studiului, \u00eentruc\u00e2t ei s-au bazat pe estim\u0103ri istorice ale dozelor de radia\u021bii, av\u00e2nd \u00een vedere c\u0103 au trecut patru decenii de la incident.<\/p>\n<h2 id=\"chapter-1\">Risc de s\u0103n\u0103tate pentru copiii p\u0103rin\u021bilor expu\u0219i la radia\u021bii?<\/h2>\n<p id=\"p-9\">Cercetarea vine \u00eens\u0103 cu ve\u0219ti bune. Riscul pentru s\u0103n\u0103tate ar trebui s\u0103 fie relativ mic, \u00eentruc\u00e2t copiii p\u0103rin\u021bilor expu\u0219i nu au prezentat un risc mai mare de \u00eemboln\u0103vire.<\/p>\n<p id=\"p-10\">\u201eAv\u00e2nd \u00een vedere cre\u0219terea global\u0103 redus\u0103 a cDNM-urilor \u00een urma expunerii paterne la radia\u021bii ionizante \u0219i propor\u021bia redus\u0103 a genomului care codific\u0103 proteine, probabilitatea ca o boal\u0103 care apare la descenden\u021bii p\u0103rin\u021bilor expu\u0219i s\u0103 fie declan\u0219at\u0103 de un cDNM este minim\u0103\u201d, mai scriu cercet\u0103torii.<\/p>\n<p id=\"p-11\">Cercetarea a fost publicat\u0103 \u00een Scientific Reports.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>O nou\u0103 cercetare realizat\u0103 de oamenii de \u0219tiin\u021b\u0103 relev\u0103 c\u0103 leziunile ADN cauzate de radia\u021biile ionizante (IR) emise \u00een urma dezastrului nuclear de la Cernob\u00eel din 1986 apar la copiii &hellip; <a href=\"https:\/\/microscopemedia.com\/?p=677010\" class=\"more-link\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":677011,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"Default","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts\/677010"}],"collection":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=677010"}],"version-history":[{"count":0,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts\/677010\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/media\/677011"}],"wp:attachment":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=677010"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=677010"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=677010"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}