Arizona State \u00dcniversitesi (ASU) bilim insanlar\u0131, ya\u015fl\u0131 bal ar\u0131lar\u0131n\u0131n, gen\u00e7 ar\u0131lar\u0131n sorumluluklar\u0131n\u0131 ald\u0131klar\u0131nda beyin ya\u015flanmas\u0131n\u0131 tersine \u00e7evirebildi\u011fini ke\u015ffetti. \u0130nsanlarda ya\u015fa ba\u011fl\u0131 bunaman\u0131n \u015fu anki ara\u015ft\u0131rmalar\u0131 yeni ila\u00e7 tedavileri \u00fczerine yo\u011funla\u015fm\u0131\u015fken, ara\u015ft\u0131rmac\u0131lar bu bulgunun ya\u015fa ba\u011fl\u0131 bunaman\u0131n sosyal m\u00fcdahaleler ile yava\u015flat\u0131lmas\u0131nda ya da tedavi edilmesinde kullan\u0131labilece\u011fini s\u00f6yl\u00fcyor.<\/p>\n
ASU ve Norwegian \u00dcniversitesi Ya\u015fam Bilimleri Fak\u00fcltesi\u2019ndeki bir grup bilim insan\u0131 taraf\u0131ndan y\u00fcr\u00fct\u00fclen proje Experimental Gerontology<\/em> isimli dergide yay\u0131nland\u0131. Proje dan\u0131\u015fman\u0131 ASU Ya\u015fam Bilimler Fak\u00fcltesinden Do\u00e7. Dr. Gro Amdam, ya\u015fl\u0131 ve besin toplayan ar\u0131lar\u0131n yuva i\u00e7inde sosyal g\u00f6revleri yapmas\u0131yla beyinlerinin molek\u00fcler yap\u0131lar\u0131nda de\u011fi\u015fmeler saptad\u0131klar\u0131n\u0131 s\u00f6yl\u00fcyor ve devam ediyor: \u201cYuva i\u00e7inde kalan ve larvalarla (yavru ar\u0131) ilgilenen ar\u0131lar\u0131n zihinsel olarak becerili kald\u0131\u011f\u0131n\u0131 \u00f6nceki \u00e7al\u0131\u015fmalarla paralel olarak yine g\u00f6zlemledik. Ancak bak\u0131c\u0131l\u0131k s\u00fcrecinin ard\u0131ndan ar\u0131lar besin toplamak \u00fczere d\u0131\u015far\u0131 \u00e7\u0131k\u0131yorlar ve ya\u015flanmalar\u0131 h\u0131zl\u0131 bir \u015fekilde ba\u015fl\u0131yor. Sadece iki hafta sonra toplay\u0131c\u0131 ar\u0131lar yorgun ve y\u0131pranm\u0131\u015f kanatlara, t\u00fcys\u00fcz bir v\u00fccuda sahip oluyorlar ve en \u00f6nemlisi yeni \u015feyler \u00f6\u011frenmeye y\u00f6nelik beyin fonksiyonlar\u0131n\u0131 kaybediyorlar. Bizim sorumuz \u015fuydu; ya\u015flanma olu\u015fumunda de\u011fi\u015ftirilebilir herhangi bir \u015fey var m\u0131 ve e\u011fer varsa toplay\u0131c\u0131 ar\u0131lara yeniden larvalar\u0131n bak\u0131mlar\u0131n\u0131 \u00fcstlendirsek ne olur?\u201d<\/p>\n Deneyler boyunca ara\u015ft\u0131rmac\u0131lar krali\u00e7e ve yavru ar\u0131lar hari\u00e7 t\u00fcm gen\u00e7 bak\u0131c\u0131 ar\u0131lar yuvadan uzakla\u015ft\u0131r\u0131lm\u0131\u015f. Daha ya\u015fl\u0131 olan toplay\u0131c\u0131 ar\u0131lar\u0131n aktivitelerinde yuvaya d\u00f6nd\u00fckten birka\u00e7 g\u00fcn sonraya kadar azalma g\u00f6zlemlenmi\u015f. Daha sonra bir k\u0131s\u0131m toplay\u0131c\u0131 ar\u0131 yeniden besin aray\u0131\u015f\u0131na \u00e7\u0131karken, di\u011fer k\u0131sm\u0131 yuva ve larvalarla ilgilenmi\u015f. Ara\u015ft\u0131rmac\u0131lar 10 g\u00fcn sonra ya\u015fl\u0131 ar\u0131lar\u0131n yakla\u015f\u0131k %50\u2019sinin yuva ve larvalarla ilgilenmesi nedeniyle yeni \u015feyler \u00f6\u011frenebilme yeteneklerinde \u00f6nemli bir geli\u015fme oldu\u011funu saptam\u0131\u015f.<\/p>\n Amdam\u2019\u0131n grubu \u00f6\u011frenebilirli\u011fin geli\u015fmesini g\u00f6stermekle kalmay\u0131p, ar\u0131lar\u0131n beyinlerindeki protein de\u011fi\u015fikli\u011fini de g\u00f6stermi\u015f. \u00d6\u011frenme yetene\u011fi kazanm\u0131\u015f ve kazanmam\u0131\u015f ar\u0131lar\u0131n beyin i\u00e7erikleri kar\u015f\u0131la\u015ft\u0131r\u0131ld\u0131\u011f\u0131nda iki proteinde \u00f6nemli de\u011fi\u015fiklikler g\u00f6zlemlenmi\u015f. Bu proteinlerden biri olan Prx6 ayn\u0131 zamanda insan beyninde de kar\u015f\u0131m\u0131za \u00e7\u0131kar ve Alzheimer gibi hastal\u0131klarda g\u00f6r\u00fclen bunamaya kar\u015f\u0131 koruyucu bir rol \u00fcstlenir. Di\u011fer protein \u015faperon diye adland\u0131r\u0131l\u0131r ve beyinde ya da bir dokuda h\u00fccre d\u00fczeyinde meydana gelen bir stresin yol a\u00e7t\u0131\u011f\u0131 herhangi bir zarara kar\u015f\u0131 di\u011fer proteinleri korur.<\/p>\n Ara\u015ft\u0131rmac\u0131lar genelde insanlar\u0131n beyin fonksiyonlar\u0131n\u0131n s\u00fcrd\u00fcr\u00fclebilmesine yard\u0131mc\u0131 yeni ila\u00e7lar \u00fcretebilmek i\u00e7in \u00e7abal\u0131yor. Hen\u00fcz 30 y\u0131ll\u0131k temel ara\u015ft\u0131rmalar ve denemelerle kar\u015f\u0131la\u015fabilirler. \u201cBelki de bug\u00fcn yapabilece\u011fimiz ve beynimizin daha gen\u00e7 kalmas\u0131na yard\u0131mc\u0131 olacak olan, sosyal giri\u015fimlerdir. \u0130nsanlarda da ara\u015ft\u0131r\u0131lan proteinler ar\u0131lar\u0131n sahip olduklar\u0131n\u0131n ayn\u0131s\u0131 oldu\u011fu i\u00e7in belirli sosyal deneylere kendili\u011finden yard\u0131mc\u0131 olabilir.\u201d diyor Amdam. \u0130leriki \u00e7al\u0131\u015fmalar\u0131nda da ar\u0131larda denenen ayn\u0131 molek\u00fcl de\u011fi\u015fimlerinin s\u0131\u00e7anlar gibi memeliler \u00fczerinde denenmesi gerekti\u011fini, insanlarda ise bunun sosyalle\u015ferek uyar\u0131labilece\u011fini s\u00f6yl\u00fcyor.<\/p>\n Kaynak:<\/strong> \u201cBees Can ‘Turn Back Time,’ Reverse Brain Aging\u201d, http:\/\/www.sciencedaily.com\/releases\/2012\/07\/120703172547.htm (3 Temmuz 2012).<\/p>\n","protected":false},"excerpt":{"rendered":" Arizona State \u00dcniversitesi (ASU) bilim insanlar\u0131, ya\u015fl\u0131 bal ar\u0131lar\u0131n\u0131n, gen\u00e7 ar\u0131lar\u0131n sorumluluklar\u0131n\u0131 ald\u0131klar\u0131nda beyin ya\u015flanmas\u0131n\u0131 tersine \u00e7evirebildi\u011fini ke\u015ffetti. \u0130nsanlarda ya\u015fa ba\u011fl\u0131 bunaman\u0131n \u015fu anki ara\u015ft\u0131rmalar\u0131 yeni ila\u00e7 tedavileri \u00fczerine yo\u011funla\u015fm\u0131\u015fken, ara\u015ft\u0131rmac\u0131lar bu bulgunun ya\u015fa ba\u011fl\u0131 bunaman\u0131n sosyal m\u00fcdahaleler ile yava\u015flat\u0131lmas\u0131nda ya da tedavi edilmesinde kullan\u0131labilece\u011fini s\u00f6yl\u00fcyor. ASU ve Norwegian \u00dcniversitesi Ya\u015fam Bilimleri Fak\u00fcltesi\u2019ndeki bir grup […]<\/p>\n","protected":false},"author":755,"featured_media":43094,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[139,38],"tags":[3512,254,606,6390,423],"class_list":["post-43093","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-102-sayi","category-dergi-sayilari","tag-ari","tag-beyin","tag-deney","tag-fonksiyon","tag-yaslanma"],"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