{"id":28067,"date":"2017-04-27T10:31:27","date_gmt":"2017-04-27T08:31:27","guid":{"rendered":"http:\/\/www.invarena.cz\/?p=28067"},"modified":"2017-04-27T10:31:27","modified_gmt":"2017-04-27T08:31:27","slug":"vedci-v-usa-vyvinuli-umelou-delohu-pro-predcasne-narozene","status":"publish","type":"post","link":"https:\/\/www.invarena.cz\/?p=28067","title":{"rendered":"V\u011bdci v USA vyvinuli um\u011blou d\u011blohu pro p\u0159ed\u010dasn\u011b narozen\u00e9"},"content":{"rendered":"

V\u011bdci ve Spojen\u00fdch st\u00e1tech vyvinuli mimot\u011bln\u00ed podp\u016frn\u00e9 za\u0159\u00edzen\u00ed, kter\u00e9 svou funkc\u00ed nahrazuje d\u011blohu a placentu, co\u017e by mohlo v\u00fdrazn\u011b zv\u00fd\u0161it \u0161anci na p\u0159e\u017eit\u00ed d\u011bt\u00ed narozen\u00fdch dlouho p\u0159ed term\u00ednem. Nad\u011bje na zlep\u0161en\u00ed p\u00e9\u010de o p\u0159ed\u010dasn\u011b narozen\u00e9 d\u011bti d\u00e1vaj\u00ed preklinick\u00e9 testy na jeh\u0148atech, uvedla agentura Reuters.<\/strong><\/p>\n

V um\u011bl\u00e9m vaku napln\u011bn\u00e9m plodovou vodou odborn\u00edci dok\u00e1zali vytvo\u0159it podm\u00ednky podobn\u00e9 v d\u011bloze a placent\u011b. Prototyp za\u0159\u00edzen\u00ed vyzkou\u0161eli na \u0161esti jeh\u0148atech, jejich\u017e p\u0159irozen\u00fd v\u00fdvoj v mate\u0159sk\u00e9m l\u016fn\u011b byl p\u0159eru\u0161en v dob\u011b, kter\u00e1 odpov\u00edd\u00e1 23. \u010di 24. t\u00fddnu lidsk\u00e9ho plodu, tedy konci p\u00e1t\u00e9ho m\u011bs\u00edce t\u011bhotenstv\u00ed.<\/p>\n

Po\u010d\u00e1tek \u0161est\u00e9ho m\u011bs\u00edce je obecn\u011b pova\u017eov\u00e1n za hranici p\u0159e\u017eit\u00ed. Nedono\u0161en\u00fd novorozenec v obdob\u00ed po 23. t\u00fddnu v\u00e1\u017e\u00ed okolo 500 gram\u016f a jeho pl\u00edce nejsou schopny zpracov\u00e1vat vzduch.<\/p>\n

Nap\u0159\u00edklad v USA se p\u0159ed\u010dasn\u011b v rozmez\u00ed 23. a\u017e 26. t\u00fddne t\u011bhotenstv\u00ed narod\u00ed ro\u010dn\u011b 30.000 d\u011bt\u00ed, nad\u011bje na jejich p\u0159e\u017eit\u00ed je mimo\u0159\u00e1dn\u011b n\u00edzk\u00e1, zem\u0159e jich a\u017e 70 procent. Mnoho z t\u011bch, kte\u0159\u00ed extr\u00e9mn\u011b brzk\u00e9 narozen\u00ed p\u0159e\u017eij\u00ed, se pak n\u00e1sledn\u011b pot\u00fdk\u00e1 s celo\u017eivotn\u00edmi zdravotn\u00edmi probl\u00e9my.<\/p>\n

S pomoc\u00ed um\u011bl\u00e9ho vaku a v laborato\u0159i p\u0159ipraven\u00e9 plodov\u00e9 vody v\u0161ak byli v\u011bdci schopni pokra\u010dovat ve v\u00fdvoji plod\u016f jeh\u0148at. Takov\u00e9to prost\u0159ed\u00ed nav\u00edc bylo tak\u0159ka steriln\u00ed. V\u00fdvoj plic plod\u016f jeh\u0148at je podle fyziologa Marcuse Daveyho, kter\u00fd se na testech pod\u00edlel, velmi podobn\u00fd tomu lidsk\u00e9mu.<\/p>\n

„Pl\u00edce plodu jsou uzp\u016fsobeny k \u010dinnosti v kapalin\u011b. Takov\u00e9 prost\u0159ed\u00ed jsme vytvo\u0159ili, \u010d\u00edm\u017e jsme umo\u017enili, aby se pl\u00edce i dal\u0161\u00ed org\u00e1ny mohly vyv\u00edjet,“ vysv\u011btlil Davey s t\u00edm, \u017ee sou\u010dasn\u011b byla umo\u017en\u011bna i v\u00fd\u017eiva a r\u016fst plodu.<\/p>\n

Vedouc\u00ed t\u00fdmu v\u011bdc\u016f Alan Flake \u0159ekl, \u017ee c\u00edlem pr\u00e1ce je vyvinout mimot\u011bln\u00ed podp\u016frn\u00fd syst\u00e9m, do kter\u00e9ho mohou b\u00fdt na n\u011bkolik t\u00fddn\u016f kl\u00ed\u010dov\u00fdch pro p\u0159e\u017eit\u00ed um\u00edst\u011bny d\u011bti narozen\u00e9 extr\u00e9mn\u011b p\u0159ed\u010dasn\u011b. Po dosa\u017een\u00ed 28. t\u00fddne p\u0159ekon\u00e1v\u00e1 toti\u017e plod jeden z mezn\u00edk\u016f sv\u00e9ho v\u00fdvoje, takzvanou hranici \u017eivotaschopnosti, kdy je schopen p\u0159e\u017e\u00edt mimo d\u011blohu.<\/p>\n

A\u010dkoli v\u00fdvoj podp\u016frn\u00e9ho syst\u00e9mu m\u016f\u017ee trvat i deset let, Flake v\u011b\u0159\u00ed, \u017ee do t\u00e9 doby budou m\u00edt l\u00e9ka\u0159i k dispozici za\u0159\u00edzen\u00ed s plodovou vodou, kter\u00e9 dramaticky zv\u00fd\u0161\u00ed \u0161ance na p\u0159e\u017eit\u00ed nedono\u0161en\u00fdch d\u011bt\u00ed. V sou\u010dasn\u00e9 dob\u011b jsou p\u0159ed\u010dasn\u011b narozen\u00e9 d\u011bti um\u00eds\u0165ov\u00e1ny do inkub\u00e1tor\u016f s um\u011blou plicn\u00ed ventilac\u00ed.<\/p>\n","protected":false},"excerpt":{"rendered":"

V\u011bdci ve Spojen\u00fdch st\u00e1tech vyvinuli mimot\u011bln\u00ed podp\u016frn\u00e9 za\u0159\u00edzen\u00ed, kter\u00e9 svou funkc\u00ed nahrazuje d\u011blohu a placentu, co\u017e by mohlo v\u00fdrazn\u011b zv\u00fd\u0161it \u0161anci na p\u0159e\u017eit\u00ed d\u011bt\u00ed narozen\u00fdch […]<\/a><\/p>\n<\/div>","protected":false},"author":1,"featured_media":20867,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-28067","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-zdravi"],"_links":{"self":[{"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/posts\/28067","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=28067"}],"version-history":[{"count":0,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/posts\/28067\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/media\/20867"}],"wp:attachment":[{"href":"https:\/\/www.invarena.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=28067"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=28067"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=28067"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}