Daily Mail<\/a>, prin\u00e1\u0161a zauj\u00edmav\u00fa te\u00f3riu. Vedci sa pok\u00fasili odpoveda\u0165 na ot\u00e1zku, \u010do by sa stalo, keby sa \u013eudstvu jedn\u00e9ho d\u0148a podarilo odstr\u00e1ni\u0165 v\u0161etky zn\u00e1me pr\u00ed\u010diny starnutia.<\/p>\nIch matematick\u00fd model uk\u00e1zal, \u017ee probl\u00e9m by nezmizol. V na\u0161ich bunk\u00e1ch toti\u017e po\u010das \u017eivota neust\u00e1le vznikaj\u00fa n\u00e1hodn\u00e9 chyby v DNA. Tie sa postupne hromadia a pod\u013ea autorov v\u00fdskumu by mohli nakoniec zlyhanie organizmu sp\u00f4sobi\u0165 aj v pr\u00edpade, \u017ee by sa podarilo zastavi\u0165 be\u017en\u00e9 procesy starnutia. O v\u00fdsledkoch informoval ScienceAlert, ktor\u00fd mal pr\u00edstup k \u0161t\u00fadii.<\/p>\n
Ko\u013eko rokov by sme mohli \u017ei\u0165?<\/p>\n
Pod\u013ea modelu vedcov by sa typick\u00e1 maxim\u00e1lna d\u013a\u017eka \u013eudsk\u00e9ho \u017eivota pohybovala pribli\u017ene medzi 150 a\u017e 190 rokmi. Nejde v\u0161ak o predpove\u010f, \u017ee sa \u013eudia v bud\u00facnosti bud\u00fa be\u017ene do\u017e\u00edva\u0165 tak\u00e9hoto veku.<\/p>\n
Autori zd\u00f4raz\u0148uj\u00fa, \u017ee ide o \u010disto teoretick\u00fd scen\u00e1r, ktor\u00fd predpoklad\u00e1, \u017ee medic\u00edna raz odstr\u00e1ni v\u0161etky ostatn\u00e9 prejavy starnutia. V skuto\u010dnom svete toti\u017e \u010dloveka ohrozuj\u00fa desiatky \u010fal\u0161\u00edch faktorov \u2013 od srdcovo-cievnych ochoren\u00ed cez rakovinu a\u017e po infekcie \u010di \u00farazy.<\/p>\n
Najv\u00e4\u010d\u0161\u00edm nepriate\u013eom je \u010das<\/p>\n
Vedci prirovn\u00e1vaj\u00fa \u013eudsk\u00e9 telo ku knihe, v ktorej sa ka\u017ed\u00fdm rokom objav\u00ed nieko\u013eko nov\u00fdch preklepov.<\/p>\n
Na za\u010diatku ich je len zop\u00e1r a organizmus si s nimi porad\u00ed. Postupne sa ich v\u0161ak nazbiera to\u013eko, \u017ee za\u010dn\u00fa nar\u00fa\u0161a\u0165 fungovanie buniek. Pr\u00e1ve toto hromadenie po\u0161koden\u00ed DNA m\u00f4\u017ee pod\u013ea autorov predstavova\u0165 prirodzen\u00fa hranicu \u013eudsk\u00e9ho \u017eivota.<\/p>\n
O hranici \u017eivota sa vedci sporia u\u017e roky<\/p>\n
Ot\u00e1zka, \u010di m\u00e1 \u010dlovek pevne dan\u00fd biologick\u00fd limit, rozde\u013euje odborn\u00edkov u\u017e cel\u00e9 desa\u0165ro\u010dia.<\/p>\n
Niektor\u00e9 v\u00fdskumy nazna\u010duj\u00fa, \u017ee radik\u00e1lne pred\u013a\u017eenie \u017eivota je nepravdepodobn\u00e9, pokia\u013e sa nepodar\u00ed v\u00fdrazne spomali\u0165 samotn\u00e9 biologick\u00e9 starnutie. Na to upozornila minul\u00fd rok aj \u0161t\u00fadia publikovan\u00e1 v \u010dasopise Nature Aging, pod\u013ea ktorej sa \u010fal\u0161ie v\u00fdrazn\u00e9 predl\u017eovanie \u013eudsk\u00e9ho \u017eivota v tomto storo\u010d\u00ed jav\u00ed ako m\u00e1lo pravdepodobn\u00e9.<\/p>\n
Existuj\u00fa v\u0161ak aj vedci, ktor\u00ed tvrdia, \u017ee \u017eiadnu pevn\u00fa hranicu zatia\u013e nemo\u017eno potvrdi\u0165 a bud\u00face objavy m\u00f4\u017eu dne\u0161n\u00e9 predstavy v\u00fdrazne zmeni\u0165.<\/p>\n
Rekord zatia\u013e st\u00e1le patr\u00ed Franc\u00fazke<\/p>\n
Najstar\u0161\u00edm overen\u00fdm \u010dlovekom v hist\u00f3rii zost\u00e1va Jeanne Calmentov\u00e1 z Franc\u00fazska, ktor\u00e1 sa do\u017eila 122 rokov a 164 dn\u00ed. Jej rekord z roku 1997 dodnes nikto neprekonal.<\/p>\n
Vedci preto pripom\u00ednaj\u00fa, \u017ee ove\u013ea d\u00f4le\u017eitej\u0161ie ne\u017e samotn\u00e1 d\u013a\u017eka \u017eivota je, ko\u013eko rokov \u010dlovek pre\u017eije v dobrom zdrav\u00ed. Pr\u00e1ve na pred\u013a\u017eenie takzvan\u00e9ho zdrav\u00e9ho \u017eivota sa dnes zameriava v\u00e4\u010d\u0161ina modern\u00e9ho v\u00fdskumu starnutia.<\/p>\n","protected":false},"excerpt":{"rendered":"Najstar\u0161\u00edm overen\u00fdm \u010dlovekom v hist\u00f3rii zost\u00e1va Jeanne Calmentov\u00e1 z Franc\u00fazska. (Zdroj: Profimedia, ) LOND\u00ddN \u2013 \u013dudia sn\u00edvaj\u00fa o…\n","protected":false},"author":2,"featured_media":146590,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_share_on_mastodon":"0"},"categories":[8],"tags":[1377,44688,44687,33,43,40,42,36,5342,50,5343,44689,49,48],"class_list":["post-146589","post","type-post","status-publish","format-standard","has-post-thumbnail","category-svet","tag-dlhovekost","tag-dlzka-zivota","tag-jeanne-calmentova","tag-news","tag-sk","tag-slovak","tag-slovencina","tag-spravy","tag-studia","tag-svet","tag-vedci","tag-vek-dozitia","tag-world","tag-world-news"],"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@sk\/117069262599140204","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/posts\/146589","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/comments?post=146589"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/posts\/146589\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/media\/146590"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/media?parent=146589"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/categories?post=146589"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/sk\/wp-json\/wp\/v2\/tags?post=146589"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}