Afro-Amerikan \u00e7ocuklar \u00fczerinde yap\u0131lan ara\u015ft\u0131rmaya g\u00f6re, stresli bir ortam gen\u00e7 kromozomlar \u00fczerinde kal\u0131c\u0131 etkiler b\u0131rak\u0131yor. Telomer, kromozomlar\u0131n koruyucusu olma i\u015flevine sahip. Yoksul ve d\u00fczensiz bir ev ya\u015fam\u0131na sahip \u00e7ocuklarda ise telemor daha k\u0131sa.<\/p>\n
Proceedings of the National Academy of Sciences<\/em> dergisinde yay\u0131mlanan ara\u015ft\u0131rma, ABD\u2019nin belli ba\u015fl\u0131 \u015fehirlerinden 9 ya\u015f\u0131ndaki 40 erkek \u00e7ocuk \u00fczerinde yap\u0131ld\u0131. Ara\u015ft\u0131rman\u0131n sonucuna g\u00f6re, zor ko\u015fullarda ya\u015fayan \u00e7ocuklar\u0131n telomerleri iyi ko\u015fullarda b\u00fcy\u00fcyen \u00e7ocuklara g\u00f6re y\u00fczde 19 daha k\u0131sayd\u0131. Telomerlerin boyutu ise kronik stresin biyolojik bir yans\u0131mas\u0131.<\/p>\n Ara\u015ft\u0131rmay\u0131 yorumlayan Kaliforniya \u00dcniversitesi\u2019nden sa\u011fl\u0131k psikolojisi uzman\u0131 Elissa Epel, bu \u00e7al\u0131\u015fman\u0131n ara\u015ft\u0131rmac\u0131lar\u0131 sosyal ko\u015fullar\u0131n beden sa\u011fl\u0131\u011f\u0131 \u00fczerindeki uzun d\u00f6nemli etkilerine y\u00f6nlendirdi\u011fini s\u00f6yledi. Bulgulara g\u00f6re, lise diplomas\u0131 sahibi annelerin \u00e7ocuklar\u0131n\u0131n telemorleri diploma sahibi olmayanlar\u0131nkinden y\u00fczde 32 daha uzun. D\u00fczenli aile ya\u015fam\u0131na sahip \u00e7ocuklar\u0131n telemorleri, buna sahip olmayan ve \u00e7ok e\u015fli ebeveynlerden y\u00fczde 40 oran\u0131nda daha uzun.<\/p>\n Ara\u015ft\u0131rmaya g\u00f6re, stres ve telemor uzunlu\u011fu aras\u0131ndaki ba\u011flant\u0131 genetik de\u011fi\u015fkenler, serotonin ve dopamin \u00fczerindeki etkiyle a\u00e7\u0131klan\u0131yor. Ara\u015ft\u0131rmac\u0131lar, hassasla\u015ft\u0131ran gen varyantlar\u0131n\u0131n, \u00e7ocuklar\u0131n telomerlerini besleyen ortamlarda korudu\u011funu, dezavatajl\u0131 ko\u015fullarda ya\u015fayan \u00e7ocuklarda ise daha \u00e7ok telemor kayb\u0131na yol a\u00e7t\u0131\u011f\u0131n\u0131 buldu. Alellerin olmad\u0131\u011f\u0131 \u00e7ocuklar\u0131n ise, ya\u015fam ko\u015fullar\u0131ndan ba\u011f\u0131ms\u0131z olarak telemorlerinde daha az fark g\u00f6r\u00fcl\u00fcyor. Daha \u00f6nceki \u00e7al\u0131\u015fmalar stresin beyin \u00fczerindeki biyolojik etkilerini ortaya \u00e7\u0131karm\u0131\u015ft\u0131. Bu \u00e7al\u0131\u015fma ise stresin telemor \u00fczerindeki etkilerini g\u00f6stermesi a\u00e7\u0131s\u0131ndan bir ilk.<\/p>\n \u00c7al\u0131\u015fma 2500 \u00e7ocuk i\u00e7in tekrarlanarak, sonu\u00e7lar yeniden \u00f6l\u00e7\u00fclecek. 9 ya\u015f stresin \u00e7ocuklar \u00fczerindeki etkisinin g\u00f6r\u00fcld\u00fc\u011f\u00fc kritik bir d\u00f6nem oldu\u011fundan, bu a\u015famada yap\u0131lacak m\u00fcdahaleler \u00e7ocuk sa\u011fl\u0131\u011f\u0131 i\u00e7in hayati olabilir.<\/p>\n Kaynaklar<\/strong><\/p>\n 1) Jyoti Madhusoodanan, http:\/\/www.nature.com\/news\/stress-alters-children-s-genomes-1.14997<\/p>\n","protected":false},"excerpt":{"rendered":" Afro-Amerikan \u00e7ocuklar \u00fczerinde yap\u0131lan ara\u015ft\u0131rmaya g\u00f6re, stresli bir ortam gen\u00e7 kromozomlar \u00fczerinde kal\u0131c\u0131 etkiler b\u0131rak\u0131yor. Telomer, kromozomlar\u0131n koruyucusu olma i\u015flevine sahip. Yoksul ve d\u00fczensiz bir ev ya\u015fam\u0131na sahip \u00e7ocuklarda ise telemor daha k\u0131sa. Proceedings of the National Academy of Sciences dergisinde yay\u0131mlanan ara\u015ft\u0131rma, ABD\u2019nin belli ba\u015fl\u0131 \u015fehirlerinden 9 ya\u015f\u0131ndaki 40 erkek \u00e7ocuk \u00fczerinde yap\u0131ld\u0131. Ara\u015ft\u0131rman\u0131n […]<\/p>\n","protected":false},"author":551,"featured_media":25569,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[160,19,38],"tags":[470,773,782,902],"class_list":["post-25567","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-123-sayi","category-bilim-gundemi","category-dergi-sayilari","tag-cocuk","tag-genom","tag-insan-genomu","tag-stres"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t