{"id":61874,"date":"2025-12-11T07:41:11","date_gmt":"2025-12-11T07:41:11","guid":{"rendered":"https:\/\/www.europesays.com\/ee\/61874\/"},"modified":"2025-12-11T07:41:11","modified_gmt":"2025-12-11T07:41:11","slug":"tompsuu-suudab-eemaldatud-harknaarme-taielikult-taastada-loodus","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/ee\/61874\/","title":{"rendered":"T\u00f6mpsuu suudab eemaldatud harkn\u00e4\u00e4rme t\u00e4ielikult taastada | Loodus"},"content":{"rendered":"

Mehhiko t\u00f6mpsuu, nahuap\u00e4raselt aksolotl, Eestis rahvasuus m\u00f5nikord ka otse veekoletiseks nimetatud loomake on sabakonnaliste seltsi kuuluv lamedapoolse pea, keha ja sabaga paarik\u00fcmne sentimeetrine vee-elukas, kes elab terve elu vastsena ega saa kunagi valmikuks.<\/p>\n

Arvatavasti just selle p\u00fcsivastselisusega seotult on tal h\u00e4mmastav regeneratsiooniv\u00f5ime: kahjustada saanud v\u00f5i lausa kaotsi l\u00e4inud kehaosi suudab ta t\u00e4ielikult taastada, nii j\u00e4semeid, silmi kui osaliselt isegi ka aju.<\/p>\n

Saksa ja Ameerika teadlased on n\u00fc\u00fcd tuvastanud, et mehhiko t\u00f6mpsuu suudab vajaduse korral uuesti \u00fcles ehitada ka laitmatult talitleva harkn\u00e4\u00e4rme.<\/p>\n

Harkn\u00e4\u00e4re ehk t\u00fc\u00fcmus on selogroogsete loomade elund, mis paikneb s\u00fcdame ees ja kus k\u00fcpsevad ja arenevad immuuns\u00fcsteemi jaoks \u00fclivajalikud T-rakud.<\/p>\n

<\/p>\n

Anna Czarkwiani Dresdeni Tehnika\u00fclikoolist ja ta kolleegid eemaldasid noortel t\u00f6mpsuudel harkn\u00e4\u00e4rme nii t\u00e4ielikult kui said ja j\u00e4lgisid siis, kuidas selle asemele kasvas uus harkn\u00e4\u00e4re. J\u00e4lgimiseks kasutasid nad nii kuvamistehnikat, koeproove kui ka RNA j\u00e4rjeldamist.<\/p>\n

Enam kui pooled loomad suutsid harkn\u00e4\u00e4rme taastada. Selleks kulus neil umbes 35 p\u00e4eva. Mitte \u00fchelgi maailma loomal ei ole varem t\u00e4ielikult k\u00f5rvaldatud harkn\u00e4\u00e4rme t\u00e4ielikku taastumist t\u00e4heldatud.<\/p>\n

Taastunud harkn\u00e4\u00e4re sarnanes algsega suuruselt ja kujult, aga mis veelgi olulisem, see ka talitles t\u00e4iesti normaalselt.<\/p>\n

Czarkwiani ja ta kaaslased uurisid ka harkn\u00e4\u00e4rme taastumist korraldavaid geneetilisi, molekulaarseid ja rakulisi mehhanisme, mida nad kirjeldavad l\u00e4hemalt ajakirjas Science Immunology<\/a>.<\/p>\n

Teadlased loodavad, et mehhiko t\u00f6mpsuu harkn\u00e4\u00e4rme taastumist p\u00f5hjalikumalt uurides v\u00f5iks tulevikus leida v\u00f5imalusi harkn\u00e4\u00e4rmekoe taastamiseks ka inimestel.<\/p>\n

Immuuns\u00fcsteesmi olulise keskusena aitab harkn\u00e4\u00e4re haigusi \u00e4ra hoida, kuid vanemas eas kipub ta aegam\u00f6\u00f6da alla k\u00e4ima.<\/p>\n

Mehhiko t\u00f6mpsuu, keda elabki looduslikult ainult Mehhikos, on seal t\u00e4nap\u00e4eval paraku saanud ohustatud liigiks, keda kahjustab muu hulgas pealinna M\u00e9xico valgumine \u00fcmberkaudseile aladele.<\/p>\n

Teadusuudised on Vikerraadios eetris esmasp\u00e4evast reedeni ca kell 8.35 ja laup\u00e4eval ca kell 8.25.<\/p>\n","protected":false},"excerpt":{"rendered":"Mehhiko t\u00f6mpsuu, nahuap\u00e4raselt aksolotl, Eestis rahvasuus m\u00f5nikord ka otse veekoletiseks nimetatud loomake on sabakonnaliste seltsi kuuluv lamedapoolse pea,…\n","protected":false},"author":2,"featured_media":61875,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[31349,26,27,37,33,35,34,36,31,32,31351,21,28,29,19,25,31350,16337,31348,23,24,31352,22,20,30],"class_list":{"0":"post-61874","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-eesti","8":"tag-aksolotl","9":"tag-breaking-news","10":"tag-breakingnews","11":"tag-ee","12":"tag-eesti","13":"tag-eesti-keel","14":"tag-estonia","15":"tag-estonian","16":"tag-featured-news","17":"tag-featurednews","18":"tag-harknaare","19":"tag-headlines","20":"tag-latest-news","21":"tag-latestnews","22":"tag-news","23":"tag-populaarseimad-lood","24":"tag-regeneratsioon","25":"tag-taastumine","26":"tag-tompsuu","27":"tag-top-stories","28":"tag-topstories","29":"tag-tuumus","30":"tag-uldised-uudised","31":"tag-uudised","32":"tag-viimased-uudised"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@ee\/115699809424402926","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/posts\/61874","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/comments?post=61874"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/posts\/61874\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/media\/61875"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/media?parent=61874"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/categories?post=61874"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/ee\/wp-json\/wp\/v2\/tags?post=61874"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}