Kosmick\u00e9 cesty maj\u00ed na lidsk\u00e9 t\u011blo zna\u010dn\u00fd vliv a nov\u00fd v\u00fdzkum odhalil znepokojuj\u00edc\u00ed dopad na krev astronaut\u016f. Podle studie publikovan\u00e9 v \u010dasopise Nature Medicine astronauti ve vesm\u00edru za\u017e\u00edvaj\u00ed zrychlen\u00e9 ni\u010den\u00ed vlastn\u00edch \u010derven\u00fdch krvinek.<\/p>\n\n
Vesm\u00edrn\u00e1 an\u00e9mie je stav charakterizovan\u00fd sn\u00ed\u017een\u00edm po\u010dtu \u010derven\u00fdch krvinek. \u010cerven\u00e9 krvinky obsahuj\u00ed hemoglobin, b\u00edlkovinu, kter\u00e1 p\u0159en\u00e1\u0161\u00ed kysl\u00edk z plic do zbytku t\u011bla. Nedostatek \u010derven\u00fdch krvinek m\u016f\u017ee v\u00e9st k an\u00e9mii, kter\u00e1 m\u00e1 za n\u00e1sledek \u00fanavu, slabost a du\u0161nost.<\/p>\n\n
Studie nazna\u010duje, \u017ee vesm\u00edrn\u00e1 an\u00e9mie je zp\u016fsobena posuny tekutin, ke kter\u00fdm doch\u00e1z\u00ed v t\u011blech astronaut\u016f, kdy\u017e se p\u0159izp\u016fsobuj\u00ed bezt\u00ed\u017en\u00e9mu prost\u0159ed\u00ed vesm\u00edru. Tyto posuny tekutin mohou zat\u011b\u017eovat ob\u011bhov\u00fd syst\u00e9m t\u011bla, co\u017e vede ke zv\u00fd\u0161en\u00e9mu ni\u010den\u00ed \u010derven\u00fdch krvinek.<\/p>\n\n
Zat\u00edmco vesm\u00edrn\u00e1 an\u00e9mie nep\u0159edstavuje ve stavu bezt\u00ed\u017ee ve vesm\u00edru velk\u00fd probl\u00e9m, m\u016f\u017ee se st\u00e1t v\u00fdznamn\u00fdm probl\u00e9mem p\u0159i n\u00e1vratu na Zemi. \u00da\u010dinky an\u00e9mie, jako je \u00fanava a slabost, mohou naru\u0161it schopnost astronaut\u016f plnit \u00fakoly a dokon\u010dovat mise.<\/p>\n\n
Studie tak\u00e9 zjistila, \u017ee \u00fa\u010dinky vesm\u00edrn\u00e9 an\u00e9mie mohou p\u0159etrv\u00e1vat nejm\u00e9n\u011b rok pot\u00e9, co se astronauti vr\u00e1t\u00ed na Zemi. Ni\u010den\u00ed \u010derven\u00fdch krvinek z\u016fst\u00e1v\u00e1 zv\u00fd\u0161en\u00e9, i kdy\u017e v ni\u017e\u0161\u00edm tempu ve srovn\u00e1n\u00ed s pobytem ve vesm\u00edru. To nazna\u010duje, \u017ee t\u011blo pot\u0159ebuje \u010das, aby se zotavilo z fyziologick\u00fdch zm\u011bn, kter\u00fdmi pro\u0161lo ve vesm\u00edru.<\/p>\n\n
Objev vesm\u00edrn\u00e9 an\u00e9mie m\u00e1 z\u00e1sadn\u00ed d\u016fsledky pro budouc\u00ed dlouhodob\u00e9 vesm\u00edrn\u00e9 mise, jako jsou mise na Mars. Astronauti na takov\u00fdchto mis\u00edch budou muset b\u00fdt schopni udr\u017eet si zdrav\u00fd po\u010det \u010derven\u00fdch krvinek, aby byla zaji\u0161t\u011bna jejich pohoda a \u00fasp\u011bch mise.<\/p>\n\n
V\u011bdci zkoumaj\u00ed r\u016fzn\u00e9 strategie ke sn\u00ed\u017een\u00ed rizika vesm\u00edrn\u00e9 an\u00e9mie. Jeden p\u0159\u00edstup zahrnuje \u00fapravu stravy astronaut\u016f, aby poskytovala lep\u0161\u00ed v\u00fd\u017eivovou podporu pro tvorbu krvinek. Dal\u0161\u00ed strategie se zam\u011b\u0159uje na v\u00fdvoj l\u00e9\u010dby k prevenci nebo zm\u00edrn\u011bn\u00ed ni\u010den\u00ed \u010derven\u00fdch krvinek.<\/p>\n\n
I kdy\u017e je vesm\u00edrn\u00e1 an\u00e9mie prim\u00e1rn\u011b probl\u00e9mem astronaut\u016f, v\u00fdsledky v\u00fdzkumu maj\u00ed \u0161ir\u0161\u00ed d\u016fsledky. Studie vrh\u00e1 sv\u011btlo na fyziologick\u00e9 adaptace, ke kter\u00fdm doch\u00e1z\u00ed v reakci na zm\u011bny gravitace, co\u017e by mohlo m\u00edt uplatn\u011bn\u00ed v porozum\u011bn\u00ed a l\u00e9\u010db\u011b ur\u010dit\u00fdch stav\u016f na Zemi, jako je an\u00e9mie souvisej\u00edc\u00ed s pobytem na l\u016f\u017eku nebo chronick\u00fdmi nemocemi.<\/p>\n\n
Vesm\u00edrn\u00e1 an\u00e9mie je v\u00e1\u017en\u00e1 v\u00fdzva, kterou je t\u0159eba \u0159e\u0161it, aby se dlouhodob\u00e9 cesty do vesm\u00edru staly skute\u010dnost\u00ed. Pr\u016fb\u011b\u017en\u00fd v\u00fdzkum je nezbytn\u00fd k identifikaci p\u0159esn\u00fdch mechanism\u016f stoj\u00edch za vesm\u00edrnou an\u00e9mi\u00ed a v\u00fdvoji \u00fa\u010dinn\u00fdch protiopat\u0159en\u00ed k ochran\u011b zdrav\u00ed budouc\u00edch astronaut\u016f.<\/p>","protected":false},"excerpt":{"rendered":"
Vesm\u00edrn\u00e1 an\u00e9mie: Hlavn\u00ed p\u0159ek\u00e1\u017eka dlouhodob\u00fdch cest do vesm\u00edru Vlivy kosmick\u00fdch cest na krev astronaut\u016f Kosmick\u00e9 cesty maj\u00ed na lidsk\u00e9 t\u011blo zna\u010dn\u00fd vliv a nov\u00fd v\u00fdzkum odhalil znepokojuj\u00edc\u00ed dopad na krev…<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[494],"tags":[1231,2884,2883,2882,2881],"class_list":["post-1272","post","type-post","status-publish","format-standard","hentry","category-space-exploration","tag-astronauts","tag-health-in-space","tag-space-travel","tag-red-blood-cells","tag-space-anemia"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/1272","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/comments?post=1272"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/1272\/revisions"}],"predecessor-version":[{"id":1273,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/1272\/revisions\/1273"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/media?parent=1272"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/categories?post=1272"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/tags?post=1272"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}