Prema modelu koji je stvorio profesor D\u017eejms Anderson, ova genetski unaprijed odre\u0111ena granica na\u0161eg imunog sistema mo\u017ee biti klju\u010d za\u0161to COVID-19 ima tako razoran u\u010dinak na starije osobe. Anderson je glavni autor rada u kojem se detaljno opisuje ova modelirana veza izme\u0111u starenja, COVID-19 i smrtnosti.<\/p>\n
“Kada se DNK podijeli u diobi \u0107elija, krajnji poklopac – nazvan telomer – postaje malo kra\u0107i sa svakom diobom”, obja\u0161njava Anderson. “Nakon niza replikacija \u0107elije, ona postaje prekratka i zaustavlja dalju diobu. Nemaju sve \u0107elije ili sve \u017eivotinje ovu granicu, ali imune \u0107elije kod ljudi imaju ovaj \u0107elijski \u017eivot.”<\/p>\n
Imuni sistem prosje\u010dne osobe prili\u010dno dobro stoji do oko 50 godina. Tada jezgra imunih \u0107elija, zvane T \u0107elije, skrate telomere i ne mogu se brzo klonirati kroz \u0107elijsku diobu u dovoljno velikom broju da napadnu i o\u010diste virus COVID-19, rekao je Anderson. Va\u017eno je, dodao je, da su du\u017eine telomera naslije\u0111ene od roditelja, prenosi znanost.com.<\/p>\n","protected":false},"excerpt":{"rendered":"
Sposobnost na\u0161eg imunog sistema da se bori protiv COVID-19, kao i svake infekcije, uvelike zavisi od njegove sposobnosti da replicira imunolo\u0161ke \u0107elije efikasne u uni\u0161tavanju virusa SARS-CoV-2 koji uzrokuje bolest. Ove klonirane imune \u0107elije ne mogu se stvarati beskona\u010dno, a klju\u010dna hipoteza nove studije Univerziteta Va\u0161ington je da sposobnost tijela da stvori te klonirane \u0107elije zna\u010dajno opada u starosti.<\/p>\n","protected":false},"author":1,"featured_media":345130,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"","_seopress_robots_index":"","_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","inline_featured_image":false,"footnotes":""},"categories":[8],"tags":[875,1622],"class_list":["post-348296","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-svastara","tag-kovid-19","tag-telomeri"],"_links":{"self":[{"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/posts\/348296","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/comments?post=348296"}],"version-history":[{"count":1,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/posts\/348296\/revisions"}],"predecessor-version":[{"id":348297,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/posts\/348296\/revisions\/348297"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/media\/345130"}],"wp:attachment":[{"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/media?parent=348296"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/categories?post=348296"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pcnen.com\/portal\/wp-json\/wp\/v2\/tags?post=348296"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}