{"id":713,"date":"2012-07-11T07:56:00","date_gmt":"2012-07-11T05:56:00","guid":{"rendered":"https:\/\/kids.esa.int\/the_wonder_of_weightless_worms\/"},"modified":"2026-10-08T00:31:27","modified_gmt":"2026-10-07T22:31:27","slug":"the_wonder_of_weightless_worms","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sl\/the_wonder_of_weightless_worms\/","title":{"rendered":"\u010cude\u017e brezte\u017enih \u010drvov"},"content":{"rendered":"
\n

V vesolju so se astronavtom pridru\u017eila \u0161tevilna razli\u010dna bitja. Tako kot ljudem se tudi ve\u010dini med njimi te\u017eko prilagaja brezte\u017enost. Izjema je majhen \u010drv, znan kot C. elegans, ki se v orbiti o\u010ditno po\u010duti bolje kot na Zemlji.<\/p>\n<\/div>\n

Ko se je astronavt ESA Andr\u00e9 Kuipers leta 2004 prvi\u010d odpravil na Mednarodno vesoljsko postajo (ISS), so za sopotnika izbrali C. elegans. Te mikroskopske \u010drvi\u010dke so izbrali, ker so bile prva kompleksna oblika \u017eivljenja, pri kateri so bili kartirani vsi geni (gradniki njihovih telesnih celic).<\/p>\n

Pozneje so znanstveniki ugotovili, da je bila aktivnost sedmih genov \u010drvov v vesolju manj\u0161a. Presenetljivo je, da so \u010drvi brez njih delovali bolje. Rezultati so nakazovali, da so se njihove mi\u0161ice prilagajale vesoljskim razmeram. Ali bi vesoljski polet lahko upo\u010dasnil proces staranja mi\u0161ic?<\/p>\n

\"I>C.
C. elegans<\/i><\/figcaption><\/figure>\n

Laboratorijski poskusi so potrdili, da so tudi druge \u010drvi, vzrejene brez teh sedmih genov, \u017eivele dlje in bile bolj zdrave. Ker imajo ljudje s C. elegans skupnih okoli 55% genov, je bil naslednji korak ugotoviti, kako se \u010dlove\u0161ke mi\u0161ice odzivajo na vesoljski polet.<\/p>\n

Med svojo drugo misijo na ISS, ki se je kon\u010dala 1. julija, je Andr\u00e9 s seboj odnesel \u0161e ve\u010d \u010drvov za nadaljnjo raziskavo. Tokrat pa so preu\u010devali tudi samega astronavta. Pred za\u010detkom misije so mu iz ene od nog odvzeli majhen ko\u0161\u010dek mi\u0161ice in ga shranili za analizo. Znanstveniki so zdaj nestrpni, da bi ugotovili, kako se ta vzorec primerja z mi\u0161icami, ki so \u0161est mesecev pre\u017eivele v brezte\u017enosti. Vendar pa ima Andr\u00e9, za razliko od \u010drvov, na voljo nekaj tednov, da si opomore od napornega potovanja, preden bodo njegove mi\u0161ice kon\u010dale pod mikroskopom.<\/p>","protected":false},"excerpt":{"rendered":"

Many different creatures have joined astronauts in space. Like people, most of them find it hard to adapt to weightlessness. One exception is a tiny worm, known as C. elegans, […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"esa_banner_image":"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2012\/07\/nematode_worm2\/17911232-2-eng-GB\/Nematode_worm.gif","esa_banner_description":"Nematode worm","esa_banner_credit":"Creative Commons ShareAlike license\u2013B. Goldstein","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2012\/07\/Nematode_worm2","esa_external_url":"","esa_external_new_window":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[10,13,63],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-713","post","type-post","status-publish","format-standard","hentry","category-learn","category-life-in-space","category-living-in-space"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/713","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/comments?post=713"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/713\/revisions"}],"predecessor-version":[{"id":4643,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/713\/revisions\/4643"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/media?parent=713"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/categories?post=713"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/tags?post=713"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/panel?post=713"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/language?post=713"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/age?post=713"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/duration?post=713"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/resource_type?post=713"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/audience?post=713"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/wf_post_folders?post=713"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}