{"id":33260,"date":"2019-03-19T03:45:46","date_gmt":"2019-03-19T00:45:46","guid":{"rendered":"https:\/\/bilimvegelecek.com.tr\/?p=33260"},"modified":"2019-03-18T20:54:32","modified_gmt":"2019-03-18T17:54:32","slug":"50-yil-once-dondurulan-koc-spermleri-basarili-bir-sekilde-dollendi","status":"publish","type":"post","link":"https:\/\/bilimvegelecek.com.tr\/index.php\/2019\/03\/19\/50-yil-once-dondurulan-koc-spermleri-basarili-bir-sekilde-dollendi","title":{"rendered":"50 y\u0131l \u00f6nce dondurulan ko\u00e7 spermleri ba\u015far\u0131l\u0131 bir \u015fekilde d\u00f6llendi"},"content":{"rendered":"

1968\u2019den bu yana Sidney\u2019deki laboratuvarda saklanan bir ko\u00e7a ait dondurulmu\u015f spermler \u00e7\u00f6z\u00fclerek aktif hale getirildi. \u201cSir Freddie\u201d adl\u0131 ko\u00e7un 56 y\u0131l \u00f6nce dondurulmu\u015f olan spermlerinin 56 koyunun yumurtalar\u0131na aktar\u0131lmas\u0131yla birlikte bu koyunlardan 34\u2019\u00fc hamile kald\u0131. Hamile kalan koyunlar\u0131n kuzular\u0131 olduk\u00e7a sa\u011fl\u0131kl\u0131.<\/p>\n

Bu \u00e7al\u0131\u015fmayla birlikte Sir Freddie, spermi bozulmadan en uzun s\u00fcre dondurulan canl\u0131 olarak tarihe ge\u00e7ti.<\/p>\n

Sydney Ziraat ve Tar\u0131m Enstit\u00fcs\u00fc\u2019nden Do\u00e7ent Doktor Simon de Graaf, \u201cYapt\u0131\u011f\u0131m\u0131z \u00e7al\u0131\u015fmadaki sonu\u00e7lar, s\u0131v\u0131 nitrojendeki 50 y\u0131ll\u0131k dondurulmu\u015f depolamaya ra\u011fmen verimlili\u011fin korundu\u011funu g\u00f6stermektedir\u201d dedi.<\/p>\n

Graaf ayr\u0131ca, yapt\u0131klar\u0131 \u00e7al\u0131\u015fma ile ortaya \u00e7\u0131kan bulgular\u0131n \u00fcreme biyolojisi ve genetik y\u00f6nleri oldu\u011funu da s\u00f6ylerken, sonraki a\u015famada kuzular\u0131n genetik \u00f6zelliklerini inceleyerek genetik farkl\u0131l\u0131klar\u0131 tespit etmeye \u00e7al\u0131\u015facaklar\u0131n\u0131 da belirtti.<\/p>\n

Projenin bir di\u011fer \u00fcyesi Jessica Rickard ise, \u201cBu \u00e7al\u0131\u015fmada, d\u00fcnyadaki herhangi bir t\u00fcr\u00fcn saklanan ve kesinlikle yavrular \u00fcretmek i\u00e7in kullan\u0131lan en eski sperm oldu\u011funa inan\u0131yoruz\u201d dedi.<\/p>\n

\"\"
Spermleri 1968 y\u0131l\u0131nda dondurulmu\u015f olan Sir Freedy.<\/figcaption><\/figure>\n

Jessica Rickard, \u201c50 y\u0131l \u00f6nce dondurulan spermle, ge\u00e7en y\u0131l dondurulanlar aras\u0131nda hi\u00e7bir fark olmad\u0131\u011f\u0131n\u0131 tespit ettiklerini ve yumurtalar\u0131 yeni dondurulan spermlerle d\u00f6llenen 1048 koyundan 618\u2019inin hamile kald\u0131\u011f\u0131n\u0131, buna g\u00f6re ise 50 y\u0131ll\u0131k spermlerde hamilelik oran\u0131n\u0131n y\u00fczde 61, yeni spermlerdeki hamilelik oran\u0131n\u0131n ise y\u00fczde 59 oldu\u011funu ifade ediyor.<\/p>\n

Sydney Ziraat Enstit\u00fcs\u00fc\u2019nde yapt\u0131\u011f\u0131 doktora sonras\u0131nda ara\u015ft\u0131rma g\u00f6revlisi olarak \u00e7al\u0131\u015fmalar\u0131na devam eden Rickard, Hayvan \u00dcreme Grubu\u2019ndaki \u00e7al\u0131\u015fmalar\u0131 ile Sydney \u00dcniversitesi\u2019ndeki veterinerlik ve biyolojik bilimlerde g\u00fc\u00e7l\u00fc hayvan \u00fcreme ara\u015ft\u0131rma gelene\u011fini s\u00fcrd\u00fcreceklerini ifade ederken, yap\u0131lan \u00e7al\u0131\u015fmaya ili\u015fkin, \u201c -196 derecede b\u00fcy\u00fck s\u0131v\u0131 azot kaplar\u0131nda k\u00fc\u00e7\u00fck topaklar halinde depolanan spermin erimesini i\u00e7erir. Daha sonra 50 ya\u015f\u0131ndaki spermin hareketlili\u011fini, h\u0131z\u0131n\u0131, ya\u015fayabilirli\u011fini ve DNA b\u00fct\u00fcnl\u00fc\u011f\u00fcn\u00fc belirlemek i\u00e7in sperm kalitesi \u00fczerinde yapt\u0131\u011f\u0131m\u0131z vitro test sonu\u00e7lar\u0131n\u0131 olumlu bir \u015fekilde g\u00f6stermi\u015f oldu\u201d diyor.<\/p>\n

Orijinal spermler 1960\u2019l\u0131 y\u0131llarda Walker Ailesi\u2019nin yeti\u015ftirdi\u011fi ko\u00e7lardan al\u0131nm\u0131\u015ft\u0131. Sidney \u00dcniversitesi\u2019nin \u00e7al\u0131\u015fmalar\u0131na h\u00e2l\u00e2 destek sa\u011flayan \u00e7iftlikte \u015fu anda 8 bin koyun bulunuyor.<\/p>\n

Kaynak:<\/strong> https:\/\/www.sciencedaily.com\/releases\/2019\/03\/190317150422.htm<\/p>\n","protected":false},"excerpt":{"rendered":"

1968\u2019den bu yana Sidney\u2019deki laboratuvarda saklanan bir ko\u00e7a ait dondurulmu\u015f spermler \u00e7\u00f6z\u00fclerek aktif hale getirildi. \u201cSir Freddie\u201d adl\u0131 ko\u00e7un 56 y\u0131l \u00f6nce dondurulmu\u015f olan spermlerinin 56 koyunun yumurtalar\u0131na aktar\u0131lmas\u0131yla birlikte bu koyunlardan 34\u2019\u00fc hamile kald\u0131. Hamile kalan koyunlar\u0131n kuzular\u0131 olduk\u00e7a sa\u011fl\u0131kl\u0131. Bu \u00e7al\u0131\u015fmayla birlikte Sir Freddie, spermi bozulmadan en uzun s\u00fcre dondurulan canl\u0131 olarak tarihe […]<\/p>\n","protected":false},"author":429,"featured_media":33261,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19],"tags":[197,4672,292,4673,3188],"class_list":["post-33260","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bilim-gundemi","tag-biyoloji","tag-dollenme","tag-genetik","tag-koyun","tag-sperm"],"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