{"id":25920,"date":"2017-03-11T09:36:00","date_gmt":"2017-03-11T08:36:00","guid":{"rendered":"http:\/\/www.invarena.cz\/?p=25920"},"modified":"2017-03-11T09:36:00","modified_gmt":"2017-03-11T08:36:00","slug":"pravdy-i-lzi-o-kmenovych-bunkach","status":"publish","type":"post","link":"https:\/\/www.invarena.cz\/?p=25920","title":{"rendered":"Pravdy i l\u017ei o kmenov\u00fdch bu\u0148k\u00e1ch"},"content":{"rendered":"<p>Je to fascinuj\u00edc\u00ed rozepsan\u00e1 kapitola l\u00e9ka\u0159sk\u00e9 v\u011bdy. Dok\u00e1\u017e\u00ed ale kmenov\u00e9 bu\u0148ky skute\u010dn\u011b z\u00e1zraky, jak mnoz\u00ed doufaj\u00ed? Ned\u00e1vn\u00e1 af\u00e9ra, kter\u00e1 zas\u00e1hla \u010desk\u00fd v\u00fdzkum, zvedla vlnu z\u00e1jmu i nevra\u017eivosti. T\u00fdden\u00edk T\u00c9MA se proto v\u011bcn\u011b a bez emoc\u00ed pustil do anal\u00fdzy, co jsou kmenov\u00e9 bu\u0148ky vlastn\u011b za\u010d. Kde v\u0161ude pom\u00e1haj\u00ed, kde mo\u017en\u00e1 budou a kde funguj\u00ed jen jako marketingov\u00e9 l\u00e1kadlo? I b\u011b\u017en\u011b sd\u00edln\u00ed l\u00e9ka\u0159i a v\u011bdci ale byli nyn\u00ed v koment\u00e1\u0159\u00edch mnohem zdr\u017eenliv\u011bj\u0161\u00ed.<br \/>\nJako by se t\u00e9ma kmenov\u00fdch bun\u011bk stalo lehce toxick\u00fdm\u2026<!--more--><\/p>\n<p>Popt\u00e1vka po nov\u00fdch l\u00e9ka\u0159sk\u00fdch metod\u00e1ch se m\u011bn\u00ed s t\u00edm, jak\u00e9 zdravotn\u00ed probl\u00e9my moment\u00e1ln\u011b lidstvo su\u017euj\u00ed. Stra\u0161\u00e1kem sou\u010dasnosti jsou nejen choroby z nadbytku, ale i dlouhov\u011bkosti. Lidsk\u00e9 tk\u00e1n\u011b a org\u00e1ny ohro\u017euje nezadr\u017eiteln\u00fd proces st\u00e1rnut\u00ed a opot\u0159eben\u00ed. Pokud bychom dok\u00e1zali tyto \u0161kody pr\u016fb\u011b\u017en\u011b napravovat, mohli bychom zachra\u0148ovat \u017eivoty a navr\u00e1tit zdrav\u00ed milion\u016fm lid\u00ed. A jak napov\u00edd\u00e1 v\u00fdzkumn\u00fd z\u00e1jem mnoha v\u011bdeck\u00fdch t\u00fdm\u016f z cel\u00e9ho sv\u011bta, nejv\u011bt\u0161\u00ed nad\u011bje up\u00ednaj\u00ed badatel\u00e9 pr\u00e1v\u011b ke kmenov\u00fdm bu\u0148k\u00e1m.<\/p>\n<p>UNIVERZ\u00c1LN\u00cd OPRAV\u00c1\u0158I<\/p>\n<p>Jejich atraktivita stoj\u00ed na teoreticky neomezen\u00e9m potenci\u00e1lu. Jde doslova o univerz\u00e1ln\u00ed n\u00e1hradn\u00ed d\u00edly pro na\u0161e t\u011blo. Maj\u00ed toti\u017e schopnost p\u0159em\u011bnit se na jak\u00fdkoli typ bun\u011bk. Organismus d\u00edky nim m\u016f\u017ee vytv\u00e1\u0159et bu\u0148ky nov\u00e9, opravovat po\u0161kozen\u00e9 a opot\u0159ebovan\u00e9 \u010d\u00e1sti t\u011bla, a t\u00edm se regenerovat.<\/p>\n<p>Jak je to mo\u017en\u00e9? Tyto v\u00fdjime\u010dn\u00e9 oprav\u00e1\u0159sk\u00e9 bu\u0148ky se toti\u017e d\u011bl\u00ed zvl\u00e1\u0161tn\u00edm &#8222;asymetrick\u00fdm&#8220; zp\u016fsobem, kdy z jedn\u00e9 mate\u0159sk\u00e9 nevznikaj\u00ed dv\u011b stejn\u00e9 dce\u0159in\u00e9, n\u00fdbr\u017e dva diametr\u00e1ln\u011b odli\u0161n\u00e9 typy bun\u011bk. Jedna se prakticky neli\u0161\u00ed od v\u00fdchoz\u00ed mate\u0159sk\u00e9 a zaji\u0161\u0165uje, aby se \u017eelezn\u00e1 z\u00e1soba kmenov\u00fdch bun\u011bk nikdy nevy\u010derpala. Druh\u00e1 dce\u0159in\u00e1 se vyvine v novou specializovanou bu\u0148ku a nahrad\u00ed tak ztr\u00e1ty, kter\u00e9 t\u011blo utrp\u011blo.<\/p>\n<p>\u0160k\u00e1la prom\u011bn kmenov\u00fdch bun\u011bk p\u0159edur\u010den\u00fdch k dal\u0161\u00ed specializaci je ale r\u016fzn\u011b \u0161irok\u00e1. N\u011bkter\u00e9 maj\u00ed p\u0159ed sebou jen jednu &#8222;profesi&#8220;. V\u011bdci v tomto p\u0159\u00edpad\u011b mluv\u00ed o unipotentn\u00edch bu\u0148k\u00e1ch. K nim pat\u0159\u00ed t\u0159eba ty, je\u017e vznikaj\u00ed ve tk\u00e1ni varlete a jejich\u017e posl\u00e1n\u00edm nen\u00ed nic jin\u00e9ho ne\u017e tvorba spermi\u00ed.<\/p>\n<p>N\u011bkter\u00e9 kmenov\u00e9 bu\u0148ky ale mohou m\u00edt i v\u00edce osud\u016f. Ty nejpotentn\u011bj\u0161\u00ed typy se nach\u00e1zej\u00ed v embryu. Dok\u00e1\u017e\u00ed se prom\u011bnit na kter\u00fdkoli ze zhruba 230 typ\u016f bun\u011bk lidsk\u00e9ho t\u011bla. Podobn\u011b v\u0161estrann\u011b nadan\u00ed talenti se ale v ur\u010dit\u00e9m po\u010dtu schov\u00e1vaj\u00ed v tk\u00e1n\u00edch, jako je mozek, tuk, cirkuluj\u00ed tak\u00e9 v krvi a kostn\u00ed d\u0159eni, kdykoliv p\u0159ipraven\u00e9 k oprav\u011b po\u0161kozen\u00fdch m\u00edst. Ostatn\u011b jejich schopnosti okam\u017eit\u011b nahradit nemoc\u00ed po\u0161kozen\u00e9 bu\u0148ky u\u017e sou\u010dasn\u00e1 medic\u00edna vyu\u017e\u00edv\u00e1, a dokonce u\u017e docela dlouho. V\u00edce ne\u017e p\u011bt desetilet\u00ed je l\u00e9ka\u0159i pou\u017e\u00edvaj\u00ed k l\u00e9\u010db\u011b poruchy krvetvorby nebo zhoubn\u00e9ho onemocn\u011bn\u00ed krve.<\/p>\n<p>Pr\u016fkopnickou metodou ve vyu\u017eit\u00ed bun\u011b\u010dn\u00fdch superhrdin\u016f v medic\u00edn\u011b tak byla pr\u00e1v\u011b transplantace kostn\u00ed d\u0159en\u011b, dnes ji\u017e standardn\u00ed postup l\u00e9\u010dby v onkologii, kdy pacient dost\u00e1v\u00e1 ciz\u00ed kmenov\u00e9 krvetvorn\u00e9 bu\u0148ky, proto\u017ee ty jeho byly p\u0159i l\u00e9\u010db\u011b zni\u010deny vysok\u00fdmi d\u00e1vkami chemoterapeutik. L\u00e9ka\u0159i odhaduj\u00ed, \u017ee touto metodou je ka\u017edoro\u010dn\u011b v Evrop\u011b l\u00e9\u010deno v\u00edce ne\u017e 26 tis\u00edc pacient\u016f.<\/p>\n<p>BUN\u011a\u010cN\u00cd SPECIALIST\u00c9<\/p>\n<p>V prvn\u00edch dnech \u017eivota z\u00e1rodku ale je\u0161t\u011b nezral\u00e9 bu\u0148ky netu\u0161\u00ed, \u010d\u00edm budou. O jejich budouc\u00edm &#8222;povol\u00e1n\u00ed&#8220; rozhodnou vel\u00edc\u00ed org\u00e1ny, a a\u017e teprve pozd\u011bji na sebe berou bu\u0148ky podobu t\u0159eba srdce, ledvin, mozku nebo sval\u016f. V\u011bdci ale zjistili, \u017ee t\u00edm, kdo \u0159\u00edd\u00ed v\u00fdvoj dosud nezral\u00fdch a nerozhodnut\u00fdch bun\u011bk, mohou b\u00fdt i oni sami. Dok\u00e1\u017e\u00ed toti\u017e bu\u0148ku p\u0159inutit, aby se vr\u00e1tila na \u00fapln\u00fd za\u010d\u00e1tek embryon\u00e1ln\u00edho v\u00fdvoje. Jednodu\u0161e j\u00ed vyma\u017eou pam\u011b\u0165 a p\u0159eprogramuj\u00ed genov\u00e9 aktivity. Na laboratorn\u00edch misk\u00e1ch z n\u00ed pak mohou vyp\u011bstovat bu\u0148ku svalovou, nervovou nebo ko\u017en\u00ed. Odtud se zrodila nad\u011bje, \u017ee by mohli vyr\u00e1b\u011bt n\u00e1hrady za zni\u010den\u00e9 a nemocn\u00e9 bu\u0148ky, tk\u00e1n\u011b i cel\u00e9 org\u00e1ny.<\/p>\n<p>Sm\u011bl\u00e9 pl\u00e1ny v\u011bdeck\u00fdch t\u00fdm\u016f po cel\u00e9m sv\u011bt\u011b zahrnuj\u00ed l\u00e9\u010dbu kost\u00ed, o\u010dn\u00edch rohovek, po\u0161kozen\u00e9 k\u016f\u017ee \u010di nahrazov\u00e1n\u00ed nefunk\u010dn\u00edch org\u00e1n\u016f. Jednou z nejambici\u00f3zn\u011bj\u0161\u00edch nad\u011bj\u00ed nov\u011b se rozv\u00edjej\u00edc\u00edho oboru regenerativn\u00ed medic\u00edny bylo vr\u00e1tit zp\u011bt do norm\u00e1ln\u00edho \u017eivota lidi s po\u0161kozenou m\u00edchou.<\/p>\n<p>Experimenty na zv\u00ed\u0159atech uk\u00e1zaly, \u017ee se sice jen mal\u00e1 \u010d\u00e1st bun\u011bk kostn\u00ed d\u0159en\u011b m\u011bn\u00ed na nervov\u00e9 bu\u0148ky, ale \u017ee v\u011bt\u0161ina zbyl\u00fdch nep\u0159em\u011bn\u011bn\u00fdch kmenov\u00fdch bun\u011bk uvol\u0148uje celou \u0159adu l\u00e1tek (tzv. &#8222;cytokin\u016f&#8220;), kter\u00e9 zabra\u0148uj\u00ed postupuj\u00edc\u00ed degeneraci, a tak pom\u00e1haj\u00ed k obnov\u011b po\u0161kozen\u00e9 m\u00edchy.<br \/>\nPrvn\u00ed \u010desk\u00fd pacient po v\u00e1\u017en\u00e9m \u00farazu p\u00e1te\u0159e podstoupil slibn\u00fd z\u00e1krok v roce 2003. Pozd\u011bji l\u00e9\u010dbu vyzkou\u0161eli v re\u017eimu klinick\u00e9 studie i dal\u0161\u00ed pacienti s poran\u011bnou m\u00edchou. Nad\u011bjn\u00e9 v\u00fdsledky mnoh\u00fdch laboratorn\u00edch experiment\u016f maj\u00ed ale drobnou vadu na kr\u00e1se. U slo\u017eit\u011bj\u0161\u00edho lidsk\u00e9ho organismu se nemusej\u00ed dostate\u010dn\u011b projevit. A\u017e na ojedin\u011bl\u00e9 men\u0161\u00ed studie se zat\u00edm v\u00fdsledky pozorovan\u00e9 u my\u0161\u00ed ve studi\u00edch na \u010dlov\u011bku neprojevily.<\/p>\n<p>Ne\u00fasp\u011bch ale neodradil ostatn\u00ed l\u00e9ka\u0159sk\u00e9 t\u00fdmy, aby revolu\u010dn\u00ed postup zkou\u0161ely ve sv\u00e9m oboru. Bohu\u017eel stejn\u00fd, tedy \u017e\u00e1dn\u00fd efekt, zaznamenali nap\u0159\u00edklad \u010de\u0161t\u00ed kardiologov\u00e9 v roce 2004 u pacient\u016f po infarktu. Nejen\u017ee se kmenov\u00e9 bu\u0148ky nezm\u011bnily na bu\u0148ky srde\u010dn\u00edho svalu, ale dokonce ani do srdce nedoputovaly. Profesor Michael Aschermann z II. intern\u00ed kliniky 1. l\u00e9ka\u0159sk\u00e9 fakulty UK tehdy prohl\u00e1sil, \u017ee bude pot\u0159eba po\u010dkat, a\u017e se poda\u0159\u00ed postup vylep\u0161it nap\u0159\u00edklad t\u00edm, \u017ee se bu\u0148ky budou p\u0159edem v\u00edce upravovat a mno\u017eit.<\/p>\n<p>Jak \u0159ekl, tak se za p\u00e1r let i stalo. Dnes u\u017e v\u011bdci v\u011bd\u00ed, \u017ee pro v\u011bt\u0161\u00ed \u00fasp\u011bch je t\u0159eba bu\u0148ky v laborato\u0159i namno\u017eit, kultivovat pomoc\u00ed r\u016fstov\u00fdch m\u00e9di\u00ed, kombinovat s hydrogely a nanovl\u00e1kny, kter\u00e9 pro n\u011b vytvo\u0159\u00ed jak\u00e9si nosi\u010de \u010di mosty. A \u00faporn\u00e1 snaha v\u011bdc\u016f &#8222;p\u0159esv\u011bd\u010dit&#8220; tyto bu\u0148ky, aby uzdravovaly, kone\u010dn\u011b za\u010d\u00edn\u00e1 slavit \u00fasp\u011bchy.<\/p>\n<p>L\u00c9\u010cBA Z IZRAELE. ZA MILION<\/p>\n<p>V m\u00e9di\u00edch je v\u00fdzkum kmenov\u00fdch bun\u011bk nep\u0159etr\u017eit\u00fdm zdrojem fantastick\u00fdch zpr\u00e1v slibuj\u00edc\u00edch &#8222;nov\u00e9 nad\u011bje&#8220; a &#8222;p\u0159evratn\u00e9 l\u00e9\u010dby&#8220;. Pro Ale\u0161e Dennera z Ok\u0159e\u0161ic u T\u0159eb\u00ed\u010de to nejsou jen pr\u00e1zdn\u00e9 novinov\u00e9 titulky. Trp\u00ed svalovou dystrofi\u00ed. Jde o genetickou poruchu, kdy si t\u011blo nemocn\u00e9ho neum\u00ed vyrobit b\u00edlkovinu dystrofin. Bez n\u00ed svaly nem\u016f\u017eou fungovat, a tak ochabuj\u00ed. Posti\u017een\u00fd v\u011bt\u0161inou p\u0159ed dosa\u017een\u00edm plnoletosti um\u00edr\u00e1, proto\u017ee mu sel\u017ee d\u00fdchac\u00ed a srde\u010dn\u00ed svalstvo. L\u00e9ka\u0159i takov\u00fdm lidem d\u00e1vaj\u00ed maxim\u00e1ln\u011b dvacet let \u017eivota.<\/p>\n<p>Loni na podzim absolvoval Ale\u0161 jako prvn\u00ed d\u00edt\u011b na sv\u011bt\u011b experiment\u00e1ln\u00ed l\u00e9\u010dbu kmenov\u00fdmi bu\u0148kami na specializovan\u00e9m pracovi\u0161ti v Izraeli. &#8222;Vid\u00edm zlep\u0161en\u00ed a\u017e te\u010f. V\u011bd\u011bli jsme ale, \u017ee bude n\u011bjak\u00fd \u010das trvat, ne\u017e se prvn\u00ed v\u00e1rka l\u00e9\u010dby projev\u00ed. Ne\u017e se laserem c\u00edlen\u011b transportovan\u00e9 bu\u0148ky usad\u00ed a za\u010dnou vykon\u00e1vat to, co se od nich o\u010dek\u00e1v\u00e1 \u2013 vytv\u00e1\u0159et p\u0159\u00edhodn\u00e9 prost\u0159ed\u00ed pro dystrofin,&#8220; \u0159ekla matka Ale\u0161e Eva Dennerov\u00e1 letos v lednu serveru iDnes.cz.<\/p>\n<p>L\u00e9\u010debn\u00e1 d\u00e1vka vyjde v p\u0159epo\u010dtu na milion korun. Experiment\u00e1ln\u00ed l\u00e9\u010dba kmenov\u00fdmi bu\u0148kami v\u0161ak nen\u00ed Evropskou uni\u00ed schv\u00e1lena, tak\u017ee nebyla \u0161ance, \u017ee by rodin\u011b n\u011bjak\u00e1 \u010desk\u00e1 zdravotn\u00ed poji\u0161\u0165ovna finan\u010dn\u011b vypomohla. Rodina pot\u0159ebn\u00fd obnos z\u00edskala z ve\u0159ejn\u00e9 sb\u00edrky. Brzy nato se v m\u00e9di\u00edch objevuje p\u0159\u00edb\u011bh o t\u0159in\u00e1ctilet\u00e9m Denisovi z Ostravy. Trp\u00ed stejnou nemoc\u00ed a m\u00e1 stejn\u00e9 p\u0159\u00e1n\u00ed \u2013 vybrat pen\u00edze na l\u00e9\u010dbu v Izraeli.<\/p>\n<p>POM\u016e\u017dOU, ALE NE V\u0160EM<\/p>\n<p>Experiment\u00e1ln\u00ed l\u00e9\u010dby je nyn\u00ed, zejm\u00e9na s ohledem na etiku jej\u00edho poskytov\u00e1n\u00ed, v novin\u00e1ch i televizi plno. Ned\u00e1vno odvys\u00edlala \u010cesk\u00e1 televize report\u00e1\u017e o pacientech s ALS (amyotrofick\u00e1 later\u00e1ln\u00ed skler\u00f3za, nemoc\u00ed trp\u011bl i b\u00fdval\u00fd \u010desk\u00fd premi\u00e9r Stanislav Gross, pozn. red.), kte\u0159\u00ed podstoupili nevyzkou\u0161enou l\u00e9\u010dbu kmenov\u00fdmi bu\u0148kami ve studii. Za jednu d\u00e1vku m\u011bli n\u011bkte\u0159\u00ed poskytnout dar na v\u00fdzkum a\u017e 150 000 korun spolku Bun\u011b\u010dn\u00e1 terapie, kter\u00fd finan\u010dn\u011b podporoval klinickou studii spole\u010dnosti Bioinova, s.r.o. (ve kter\u00e9 m\u00e1 majetkov\u00fd pod\u00edl \u00dastav experiment\u00e1ln\u00ed medic\u00edny AV \u010cR). Podle z\u00e1kona ale mus\u00ed b\u00fdt l\u00e9\u010div\u00fd p\u0159\u00edpravek v klinick\u00e9 studii poskytnut zdarma. Pacienti nav\u00edc vypov\u011bd\u011bli, \u017ee jim terapie nepomohla.<\/p>\n<p>Rodina Miroslava Urbana m\u011bla ale se stejnou l\u00e9\u010dbou stejn\u00e9 nemoci jin\u00e9 zku\u0161enosti. P\u0159\u00edznaky v\u00e1\u017en\u00e9 neurodegenerativn\u00ed choroby se u 61let\u00e9ho podnikatele objevily v roce 2012. P\u016fvodn\u00ed diagn\u00f3zu Parkinsonovy choroby p\u0159ehodnotili o\u0161et\u0159uj\u00edc\u00ed l\u00e9ka\u0159i p\u0159ed v\u00edce ne\u017e rokem na ALS. &#8222;Prvn\u00ed d\u00e1vku kmenov\u00fdch bun\u011bk mimo klinickou studii dostal t\u00e1ta od o\u0161et\u0159uj\u00edc\u00edho l\u00e9ka\u0159e loni v l\u00e9t\u011b, druhou v prosinci. U\u017e po prvn\u00ed c\u00edtil zlep\u0161en\u00ed. Mnohem l\u00e9pe polyk\u00e1, d\u0159\u00edve se p\u0159i j\u00eddle nebo pit\u00ed dusil. Zlep\u0161ila se mu i ch\u016fze a \u0159e\u010d. Byli jsme ale upozorn\u011bni, \u017ee l\u00e9\u010dba nemus\u00ed pomoci a kdy\u017e dojde ke zlep\u0161en\u00ed, tak jen na p\u0159echodnou dobu,&#8220; vzpom\u00edn\u00e1 pacientova dcera Michaela Nov\u00e1kov\u00e1. To se potvrdilo v p\u0159\u00edpad\u011b koordinace nohou, kdy \u00fa\u010dinky l\u00e9\u010dby pominuly zhruba po \u010dtvrt roce. &#8222;Ale v p\u0159\u00edpad\u011b polykan\u00ed p\u0159etrv\u00e1v\u00e1 pozitivn\u00ed efekt dodnes,&#8220; tvrd\u00ed dcera.<br \/>\nV\u00fd\u0161e zm\u00edn\u011bn\u00e1 klinick\u00e1 studie, kter\u00e9 se z\u00fa\u010dastnilo 26 pacient\u016f, zkoumala bezpe\u010dnost a \u00fa\u010dinnost kmenov\u00fdch bun\u011bk, tedy zda lze jejich pomoc\u00ed tak\u00e9 zm\u00edrnit pot\u00ed\u017ee a zlep\u0161it t\u00edm kvalitu \u017eivota. &#8222;U \u017e\u00e1dn\u00e9ho z 26 za\u0159azen\u00fdch pacient\u016f nebyly pozorov\u00e1ny z\u00e1va\u017en\u00e9 ne\u017e\u00e1douc\u00ed \u00fa\u010dinky. Z hlediska \u00fa\u010dinnosti bylo hodnoceno jen 20 pacient\u016f. U 60 procent z nich se na t\u0159i m\u011bs\u00edce zpomalilo zhor\u0161ov\u00e1n\u00ed p\u0159\u00edznak\u016f onemocn\u011bn\u00ed, u 30 procent nemocn\u00fdch dokonce a\u017e na p\u016fl roku,&#8220; vypl\u00fdv\u00e1 z prezentovan\u00fdch p\u0159edb\u011b\u017en\u00fdch v\u00fdsledk\u016f klinick\u00e9 studie p\u0159ipraven\u00e9 t\u00fdmem profesorky Evy Sykov\u00e9 z \u00dastavu experiment\u00e1ln\u00ed medic\u00edny AV \u010cR a firmou Bioinova. Jej\u00ed auto\u0159i se proto domn\u00edvaj\u00ed, \u017ee mesenchym\u00e1ln\u00ed kmenov\u00e9 bu\u0148ky mohou, alespo\u0148 do\u010dasn\u011b, zpomalit progresi ALS.<br \/>\nJej\u00ed l\u00e9\u010dbu pomoc\u00ed kmenov\u00fdch bun\u011bk vid\u00ed optimisticky i izraelsk\u00fd profesor neurologie a imunologie Dimitrios Karussis. &#8222;U t\u0159in\u00e1cti ze sledovan\u00fdch \u010dtrn\u00e1cti pacient\u016f, tedy u 93 procent z nich, do\u0161lo ke zpomalen\u00ed progrese onemocn\u011bn\u00ed. A\u010dkoli mus\u00ed b\u00fdt v\u00fdsledky je\u0161t\u011b potvrzeny v\u011bt\u0161\u00edmi klinick\u00fdmi studiemi, tak se daj\u00ed ozna\u010dit za pr\u016fkopnick\u00e9\u2018 a otev\u00edraj\u00ed dve\u0159e do nov\u00e9ho sv\u011bta mo\u017enost\u00ed,&#8220; komentoval z\u00e1v\u011bry &#8222;sv\u00e9&#8220; studie v presti\u017en\u00edm m\u011bs\u00ed\u010dn\u00edku JAMA Neurology.<\/p>\n<p>SV\u011aTLO PRO O\u010cI<\/p>\n<p>Ov\u0161em jsou tu i dal\u0161\u00ed diagn\u00f3zy, u nich\u017e z\u00e1chran\u00e1\u0159sk\u00e1 funkce kmenov\u00fdch bun\u011bk d\u011bl\u00e1 doslova z\u00e1zraky. Z laborato\u0159\u00ed tak pronikaj\u00ed st\u00e1le \u010dast\u011bji i do klinick\u00e9 praxe.<\/p>\n<p>Z\u00e1sadn\u00ed pr\u016flom ohl\u00e1sili p\u0159ed \u010dasem oftalmologov\u00e9, tedy o\u010dn\u00ed l\u00e9ka\u0159i. V prosinci 2014 toti\u017e poprv\u00e9 schv\u00e1lila Evropsk\u00e1 l\u00e9kov\u00e1 agentura pou\u017eit\u00ed kmenov\u00fdch bun\u011bk v klinick\u00e9 praxi, tedy mimo experiment. T\u00fdk\u00e1 se p\u0159\u00edpravku <strong>Holoclar<\/strong>, kter\u00fd je ur\u010den k l\u00e9\u010db\u011b pacient\u016f s nedostatkem limb\u00e1ln\u00edch kmenov\u00fdch bun\u011bk. Ty se vyskytuj\u00ed na hranici mezi b\u011blimou a rohovkou. P\u0159i poran\u011bn\u00ed rohovky se za\u010dnou rychle d\u011blit, p\u0159esouvat do m\u00edsta po\u0161kozen\u00ed a tam defekt oprav\u00ed. Je to tedy jak\u00e1si sv\u00e9pomocn\u00e1 l\u00e9\u010dba organismu. &#8222;Pokud jsou tyto bu\u0148ky poni\u010deny, nap\u0159\u00edklad po \u00faraze, polept\u00e1n\u00edm nebo pop\u00e1len\u00edm, rohovka degeneruje, je nepr\u016fhledn\u00e1 a pacient v podstat\u011b slep\u00fd. Na sv\u011bt\u011b \u017eije s podobn\u00fdm posti\u017een\u00edm asi 15 milion\u016f lid\u00ed,&#8220; vy\u010d\u00edslil Milan Odehnal, prim\u00e1\u0159 O\u010dn\u00ed kliniky d\u011bt\u00ed a dosp\u011bl\u00fdch ve FN Motol v Praze.<\/p>\n<p>Doslova sv\u011btlo na konci tunelu pro tyto pacienty p\u0159edstavuje nov\u00e1 metoda l\u00e9\u010dby, kter\u00e1 jim zrak m\u016f\u017ee vr\u00e1tit. L\u00e9ka\u0159i velmi \u0161etrnou biopsi\u00ed z\u00edskaj\u00ed kmenov\u00e9 bu\u0148ky ze zdrav\u00e9ho oka. Ty pak kultivuj\u00ed a rozmno\u017e\u00ed a pomoc\u00ed zm\u00edn\u011bn\u00e9ho prepar\u00e1tu, kter\u00fd funguje jako jak\u00e1si \u017eivn\u00e1 tk\u00e1\u0148, n\u00e1sledn\u011b transplantuj\u00ed m\u00edsto po\u0161kozen\u00e9 rohovky. &#8222;D\u016fmysln\u00fdm p\u0159enosem zdrav\u00fdch kmenov\u00fdch bun\u011bk sousedn\u00edho oka na rohovku posti\u017een\u00e9ho oka doch\u00e1z\u00ed k regeneraci nefunk\u010dn\u00ed \u010d\u00e1sti,&#8220; popisuje prim\u00e1\u0159.<\/p>\n<p>Fakt, \u017ee pacient daruje kmenov\u00e9 bu\u0148ky s\u00e1m sob\u011b, m\u00e1 nespornou v\u00fdhodu. Nehroz\u00ed riziko, \u017ee by je organismus odm\u00edtl, jak se st\u00e1v\u00e1 p\u0159i transplantac\u00edch rohovky od jin\u00e9ho \u010dlov\u011bka. &#8222;Nehled\u011b na fakt, \u017ee v mnoha zem\u00edch je dnes rohovek pro transplantace nedostatek,&#8220; dopl\u0148uje Milan Odehnal.<\/p>\n<p>Odborn\u00edci pova\u017euj\u00ed krok evropsk\u00e9ho \u00fa\u0159adu za pr\u016flom, kter\u00fd otev\u00edr\u00e1 dve\u0159e dal\u0161\u00edm terapi\u00edm na b\u00e1zi kmenov\u00fdch bun\u011bk, co\u017e dokl\u00e1d\u00e1 i v\u00fdrok Giovanni Migliaccio, \u0159editele mezin\u00e1rodn\u00edho sdru\u017een\u00ed v\u00fdzkumn\u00fdch organizac\u00ed EATRIS: &#8222;Je to z\u00e1sadn\u00ed d\u016fkaz vysp\u011blosti l\u00e9\u010dby kmenov\u00fdmi bu\u0148kami, kter\u00e1 byla dosud jen nedosti\u017en\u00fdm snem.&#8220;<\/p>\n<p>Nad jejich vyu\u017eit\u00edm v medic\u00edn\u011b, konkr\u00e9tn\u011b o\u010dn\u00edm l\u00e9ka\u0159stv\u00ed, b\u00e1daj\u00ed i \u010de\u0161t\u00ed v\u011bdci. K hojen\u00ed rozs\u00e1hlej\u0161\u00edho po\u0161kozen\u00e9ho povrchu oka a t\u00edm i z\u00e1chran\u011b zraku vyu\u017eili profesor Vladim\u00edr Hol\u00e1\u0148, docentka Jitka \u010cejkov\u00e1 a jejich spolupracovn\u00edci z \u00dastavu experiment\u00e1ln\u00ed medic\u00edny AV \u010cR nejen kmenov\u00fdch bun\u011bk, ale i speci\u00e1ln\u00edch nanovl\u00e1ken vyvinut\u00fdch Technickou univerzitou v Liberci. Kmenov\u00e9 bu\u0148ky mohou b\u00fdt z\u00edsk\u00e1ny ze zdrav\u00e9ho oka, kostn\u00ed d\u0159en\u011b nebo tukov\u00e9 tk\u00e1n\u011b pacienta, p\u0159\u00edpadn\u011b od d\u00e1rce. Nanovl\u00e1kna zase zaji\u0161\u0165uj\u00ed, \u017ee na nich nap\u011bstovan\u00e9 bu\u0148ky z\u016fstanou v oku na spr\u00e1vn\u00e9m m\u00edst\u011b. Podle vedouc\u00edho v\u00fdzkumu Vladim\u00edra Hol\u00e1n\u011b je tato metoda celosv\u011btov\u011b unik\u00e1tn\u00ed. Zat\u00edm byla ale testov\u00e1na pouze na pokusn\u00fdch zv\u00ed\u0159atech. Aby mohla b\u00fdt zji\u0161t\u011bn\u00ed v\u011bdc\u016f uvedena do praxe, mus\u00ed b\u00fdt jej\u00ed bezpe\u010dnost a \u00fa\u010dinnost prok\u00e1z\u00e1na klinick\u00fdmi testy a schv\u00e1lena St\u00e1tn\u00edm \u00fastavem pro kontrolu l\u00e9\u010div.<\/p>\n<p>Kmenov\u00e9 bu\u0148Ky rutinn\u00ed metodou<\/p>\n<p>U\u017e dnes je ale aplikace kmenov\u00fdch bun\u011bk u onemocn\u011bn\u00ed rohovek v medic\u00edn\u011b na druh\u00e9m m\u00edst\u011b co do po\u010dtu l\u00e9\u010den\u00fdch pacient\u016f (na prvn\u00edm je transplantace kmenov\u00fdch bun\u011bk v r\u00e1mci l\u00e9\u010dby poruch krvetvorby). &#8222;V n\u011bkter\u00fdch zem\u00edch se stala ji\u017e t\u00e9m\u011b\u0159 standardn\u00edm postupem. Na \u0161pi\u010dce jsou v t\u00e9to problematice \u0160pan\u011bl\u00e9. V Evrop\u011b byly u pacient\u016f s o\u010dn\u00edm onemocn\u011bn\u00edm pou\u017eity kmenov\u00e9 bu\u0148ky v N\u011bmecku a Velk\u00e9 Brit\u00e1nii. Klinick\u00e9 zku\u0161enosti ji\u017e maj\u00ed tak\u00e9 v USA, Japonsku a \u010c\u00edn\u011b. Jeden pacient byl l\u00e9\u010den v Rusku,&#8220; vyjmenoval prim\u00e1\u0159 Milan Odehnal.<\/p>\n<p>Nejv\u011bt\u0161\u00ed v\u011bdeck\u00e9 a finan\u010dn\u00ed \u00fasil\u00ed je podle n\u011bj ale investov\u00e1no do jejich vyu\u017eit\u00ed u onemocn\u011bn\u00ed s\u00edtnice: &#8222;U\u017e z toho d\u016fvodu, \u017ee nap\u0159\u00edklad v\u011bkem podm\u00edn\u011bn\u00e1 makul\u00e1rn\u00ed degenerace (postihuje tzv. \u017elutou skvrnu, m\u00edsto nejost\u0159ej\u0161\u00edho vid\u011bn\u00ed, pozn. red.) je nej\u010dast\u011bj\u0161\u00ed p\u0159\u00ed\u010dinou t\u011b\u017ek\u00e9ho zrakov\u00e9ho posti\u017een\u00ed a slepoty star\u0161\u00edch lid\u00ed ve vysp\u011bl\u00fdch zem\u00edch.&#8220;<\/p>\n<p>Nemoc\u00ed trp\u00ed 10\u201315 % populace star\u0161\u00ed 65 let. V \u010cesku se tak t\u00fdk\u00e1 asi p\u016fl milionu lid\u00ed. Dal\u0161\u00edm zhruba 120 000 \u010cech\u016f ohro\u017euje zrak diabetick\u00e1 retinopatie, nez\u00e1n\u011btliv\u00e9 onemocn\u011bn\u00ed s\u00edtnice, kter\u00e9 postihne zhruba 13 % pacient\u016f s diabetem 1. nebo 2. typu. I pro n\u011b znamen\u00e1 l\u00e9\u010dba kmenov\u00fdmi bu\u0148kami do budoucna velkou nad\u011bji.<\/p>\n<p>Z\u00c1CHRANA P\u0158ED AMPUTACEMI<\/p>\n<p>Velmi slibn\u011b se nyn\u00ed jev\u00ed l\u00e9\u010dba kmenov\u00fdmi bu\u0148kami tak\u00e9 u pacient\u016f s diabetickou nohu. Jde o v\u00e1\u017enou komplikaci cukrovky. S tou se v \u010cesku l\u00e9\u010d\u00ed bezm\u00e1la 900 000 lid\u00ed (skute\u010dn\u00fd po\u010det &#8222;cukrovk\u00e1\u0159\u016f&#8220; ale podle odborn\u00fdch odhad\u016f p\u0159ekra\u010duje hranici milionu) a zhruba 45 000 z nich zt\u011b\u017euj\u00ed \u017eivot \u0161patn\u011b se hoj\u00edc\u00ed r\u00e1ny, kter\u00e9 pozd\u011bji p\u0159ech\u00e1zej\u00ed ve v\u0159edy a gangr\u00e9ny. Jedin\u00fdm \u0159e\u0161en\u00edm t\u011b\u017ek\u00fdch p\u0159\u00edpad\u016f je amputace kon\u010detiny. Tu ro\u010dn\u011b podstoup\u00ed v \u010cesku 11 000 diabetik\u016f. V\u0159edy se nehoj\u00ed proto, \u017ee nemoc po\u0161kodila krevn\u00ed z\u00e1soben\u00ed. Dodan\u00e9 kmenov\u00e9 bu\u0148ky mohou pomoci p\u0159i regeneraci t\u011bchto c\u00e9v. Prokrven\u00ed se uprav\u00ed, dojde ke zhojen\u00ed a pacient nemus\u00ed amputaci podstoupit.<\/p>\n<p>Vysokou \u00fasp\u011b\u0161nost t\u00e9to metody ve srovn\u00e1n\u00ed s dosud pou\u017e\u00edvan\u00fdmi b\u011b\u017en\u00fdmi postupy prok\u00e1zali v praxi doktor Michal Dubsk\u00fd a profesorka Alexandra Jirkovsk\u00e1 z pra\u017esk\u00e9ho IKEM, ve spolupr\u00e1ci s t\u00fdmem profesorky Evy Sykov\u00e9 z \u00dastavu experiment\u00e1ln\u00ed medic\u00edny AV \u010cR a Bioinovou. P\u0159ed p\u011bti lety pr\u00e1ci ud\u011blen\u00edm ceny vyzdvihla Americk\u00e1 diabetologick\u00e1 asociace.<\/p>\n<p>Ji\u017e v roce 2008 takto l\u00e9\u010dili v IKEM prvn\u00edho pacienta. Ten m\u011bl tehdy u\u017e jednu nohu amputovanou, l\u00e9ka\u0159i se sna\u017eili zachr\u00e1nit aspo\u0148 tu druhou. Trp\u011bl siln\u00fdmi bolestmi, pot\u0159eboval velk\u00e9 d\u00e1vky opioid\u016f. Po bun\u011b\u010dn\u00e9 terapii bylo mo\u017en\u00e9 amputaci odd\u00e1lit o cel\u00e9 t\u0159i roky. &#8222;Nyn\u00ed m\u00e1me za sebou 42 aplikac\u00ed u 40 pacient\u016f a zat\u00edm jen sedm z nich muselo podstoupit amputaci,&#8220; \u0159ekl v roce 2013 pro odborn\u00fd server Medical Tribune doktor Dubsk\u00fd.<\/p>\n<p>ZDRAV\u00cd JAKO PODNIKATELSK\u00c1 P\u0158\u00cdLE\u017dITOST<\/p>\n<p>Kmenov\u00e9 bu\u0148ky se st\u00e1vaj\u00ed nejen sv\u011btov\u00fdm hitem, ale i zdrojem kontroverzn\u00edch n\u00e1zor\u016f. L\u00e9ka\u0159i nap\u0159\u00edklad vedou ostr\u00fd spor o l\u00e9\u010dbu artr\u00f3zy, nej\u010dast\u011bj\u0161\u00edho onemocn\u011bn\u00ed kloub\u016f (kdy postupn\u011b doch\u00e1z\u00ed k destrukci kloubn\u00ed chrupavky), t\u00fdkaj\u00edc\u00edho se ji\u017e bezm\u00e1la 15 procent \u010desk\u00e9 populace a poloviny v\u0161ech lid\u00ed nad 50 let.<\/p>\n<p>Novou metodu nab\u00edzej\u00ed n\u011bkter\u00e9 soukrom\u00e9 kliniky a ambulance, kde l\u00e9ka\u0159 pacientovi vp\u00edchne do posti\u017een\u00fdch kloub\u016f speci\u00e1ln\u00ed roztok s pacientov\u00fdmi kmenov\u00fdmi bu\u0148kami.<\/p>\n<p>Nemocn\u00fdm slibuj\u00ed \u00falevu od bolesti a obnovu po\u0161kozen\u00e9 chrupavky. \u010cesk\u00e1 spole\u010dnost pro ortopedii a traumatologii ale tvrd\u00ed, \u017ee metoda, za kterou pacienti plat\u00ed i des\u00edtky tis\u00edc korun (zdravotn\u00ed poji\u0161\u0165ovny ji nepropl\u00e1cej\u00ed), nefunguje.<\/p>\n<p>Prezident ortopedick\u00e9 spole\u010dnosti prof. Pavel Dungl, p\u0159ednosta Ortopedick\u00e9 kliniky 1. LF UK a Nemocnice Na Bulovce, dokonce ost\u0159e prohl\u00e1sil: &#8222;Takzvan\u00e1 autologn\u00ed biologick\u00e1 l\u00e9\u010dba artr\u00f3zy je \u0161arlat\u00e1nsk\u00e1 metoda. Nen\u00ed klinicky testovan\u00e1 a nefunguje. Hlavn\u00edm smyslem je vyb\u00edrat od lid\u00ed nekontrolovateln\u011b pen\u00edze.&#8220;<\/p>\n<p>V\u011bt\u0161ina ortoped\u016f v budoucnost l\u00e9\u010dby kmenov\u00fdmi bu\u0148kami sice v\u011b\u0159\u00ed, v sou\u010dasn\u00e9 dob\u011b se j\u00ed ale pr\u00fd p\u0159isuzuj\u00ed v\u011bt\u0161\u00ed nad\u011bje, ne\u017e m\u016f\u017ee d\u00e1t. &#8222;Aplikace kmenov\u00fdch bun\u011bk odebran\u00fdch z tuku b\u0159i\u0161n\u00ed st\u011bny do kolena nen\u00ed n\u011bco, od \u010deho bychom nyn\u00ed mohli o\u010dek\u00e1vat p\u0159evratn\u00e9 \u00fa\u010dinky,&#8220; mysl\u00ed si prim\u00e1\u0159 Centra l\u00e9\u010dby pohybov\u00e9ho apar\u00e1tu Ji\u0159\u00ed V\u00e1chal. Podle jeho kolegy Vladislava Hospod\u00e1ra tahle l\u00e9\u010dba z logiky v\u011bci ani fungovat nem\u016f\u017ee.<\/p>\n<p>Bu\u0148ka pr\u00fd pot\u0159ebuje dostat informaci, kde chyb\u00ed, kam m\u00e1 nasko\u010dit a kde opravovat \u0161kody. &#8222;B\u00edl\u00e9 krvinky to m\u00edsto ozna\u010d\u00ed. A te\u010f n\u011bkdo vezme tuk z b\u0159icha, kde je, a\u0165 se na m\u011b nikdo nezlob\u00ed, koncentrace kmenov\u00fdch bun\u011bk miziv\u00e1, a p\u00edchne ji do kloubu. Takhle z lid\u00ed tahat nemal\u00e9 pen\u00edze je nef\u00e9r. Kmenov\u00e1 bu\u0148ka je v r\u00e1mci molekul\u00e1rn\u00ed medic\u00edny perspektivn\u00ed cesta, ale ne te\u010f a ne takto,&#8220; uzav\u00edr\u00e1 \u0161\u00e9f ortopedick\u00e9ho odd\u011blen\u00ed Rehabilita\u010dn\u00ed kliniky Malvazinky.<\/p>\n<p>Do klinick\u00fdch studi\u00ed p\u0159esto investuj\u00ed nemal\u00e9 \u010d\u00e1stky i firmy mimo zdravotnick\u00fd obor. C\u00edt\u00ed v tom finan\u010dn\u00ed potenci\u00e1l. \u0160\u00e9f p\u0159edstavenstva Asociace mal\u00fdch a st\u0159edn\u00edch podnik\u016f Karel Havl\u00ed\u010dek m\u00edn\u00ed, \u017ee zejm\u00e9na pr\u00e1v\u011b u ortopedick\u00fdch studi\u00ed je l\u00e9\u010dba kmenov\u00fdmi bu\u0148kami velmi nad\u011bjn\u00e1. &#8222;Je to rizikov\u00e1 investice, ale kdy\u017e to dob\u0159e dopadne, je v n\u00ed pom\u011brn\u011b slu\u0161n\u00e1 v\u00fdnosnost. Lid\u00e9, kte\u0159\u00ed do klinick\u00fdch studi\u00ed pen\u00edze d\u00e1vaj\u00ed, v\u011b\u0159\u00ed, \u017ee se to jednou prom\u011bn\u00ed v zaj\u00edmav\u00fd byznys,&#8220; \u0159ekl Havl\u00ed\u010dek.<\/p>\n<p>Tv\u00e1\u0159e jako slabik\u00e1\u0159e<\/p>\n<p>Kdy\u017e se praxe sna\u017e\u00ed kr\u00e1\u010det rychleji ne\u017e v\u011bdeck\u00e9 v\u00fdzkumy, m\u016f\u017ee se st\u00e1t i ze vzru\u0161uj\u00edc\u00ed oblasti v\u011bdy pouh\u00e9 marketingov\u00e9 l\u00e1kadlo. Na vln\u011b popularity kmenov\u00fdch bun\u011bk se svezl i kosmetick\u00fd pr\u016fmysl.<\/p>\n<p>Hitem ned\u00e1vn\u00fdch let byly kr\u00e9my zalo\u017een\u00e9 na kmenov\u00fdch bu\u0148k\u00e1ch r\u016f\u017e\u00ed, mo\u0159sk\u00fdch \u0159as, jablek nebo stromu arg\u00e1nie. Ple\u0165ov\u00e1 maska jedn\u00e9 nejmenovan\u00e9 zna\u010dky slibovala a\u017e 150 milion\u016f kmenov\u00fdch bun\u011bk z rostlin a zm\u011bnu, &#8222;kterou uc\u00edt\u00edte i uvid\u00edte u\u017e po jedn\u00e9 noci&#8220;. Za nere\u00e1ln\u00e9 sliby u\u017e dostala p\u0159es prsty v podob\u011b varovn\u00e9ho dopisu tak\u00e9 firma L\u2019Oreal. Poslala j\u00ed ho americk\u00e1 vl\u00e1dn\u00ed agentura FDA (\u00da\u0159ad pro kontrolu potravin a l\u00e9\u010div) za om\u00edlan\u00e9 tvrzen\u00ed \u00fadajn\u011b klinicky prok\u00e1zan\u00e9ho omlazovac\u00edho efektu jedn\u00e9 ple\u0165ov\u00e9 \u0159ady, jej\u00ed\u017e \u00fa\u010dinky m\u011bly b\u00fdt postaven\u00e9 pr\u00e1v\u011b na vyu\u017eit\u00ed kmenov\u00fdch bun\u011bk.<\/p>\n<p>V Evrop\u011b zat\u00edm kosmetika tak p\u0159\u00edsn\u00fdm kontrol\u00e1m jako ve Spojen\u00fdch st\u00e1tech nepodl\u00e9h\u00e1. Na \u010desk\u00e9m trhu proto podobn\u00fdch v\u00fdrobk\u016f p\u0159ib\u00fdv\u00e1. Vl\u00e1dnou mu s\u00e9ra slibuj\u00edc\u00ed &#8222;lifting&#8220; kmenov\u00fdmi bu\u0148kami extrahovan\u00fdmi z tuku lidsk\u00fdch tk\u00e1n\u00ed \u010di p\u0159\u00edpravky proti vypad\u00e1v\u00e1n\u00ed vlas\u016f s v\u00fdta\u017eky z kmenov\u00fdch bun\u011bk. &#8222;Ty jsou v oboru plastick\u00e9 chirurgie kouzeln\u00fdm marketingov\u00fdm slov\u00ed\u010dkem, na kter\u00e9 klienti sly\u0161\u00ed, a mnoh\u00e1 za\u0159\u00edzen\u00ed toho bohu\u017eel zneu\u017e\u00edvaj\u00ed,&#8220; prozradil spolumajitel kliniky plastick\u00e9 chirurgie, kter\u00fd si nep\u0159\u00e1l zve\u0159ejnit sv\u00e9 jm\u00e9no.Krom\u011b toho v rukou doktor\u016f bud\u00ed takov\u00e9 v\u00fdrobky v\u011bt\u0161\u00ed d\u016fv\u011bru.<\/p>\n<p>Jak\u00e9 praktick\u00e9 zku\u0161enosti s nimi l\u00e9ka\u0159i z oboru estetick\u00e9 medic\u00edny maj\u00ed, se n\u00e1m ale zjistit nepoda\u0159ilo. \u017d\u00e1dn\u00fd z osloven\u00fdch specialist\u016f se k p\u0159\u00edpravk\u016fm na b\u00e1zi kmenov\u00fdch bun\u011bk necht\u011bl vyj\u00e1d\u0159it. Nezb\u00fdv\u00e1, ne\u017e hledat odpov\u011b\u010f ve t\u0159i roky star\u00e9m prohl\u00e1\u0161en\u00ed plastick\u00e9ho chirurga Michaela Entnera pro server iDnes.cz: &#8222;Pozitivn\u00ed \u00fa\u010dinky je\u0161t\u011b nebyly objektivn\u011b prok\u00e1z\u00e1ny a lze jen doufat, \u017ee neexistuj\u00ed \u017e\u00e1dn\u00e9 negativn\u00ed vedlej\u0161\u00ed efekty.&#8220;<\/p>\n<p>Na definitivn\u00ed a jednotnou odpov\u011b\u010f, jak\u00e9 mo\u017enosti (nejen) tomuto oboru kmenov\u00e9 bu\u0148ky skute\u010dn\u011b p\u0159in\u00e1\u0161ej\u00ed, si tedy budeme muset po\u010dkat do doby, a\u017e televizn\u00ed &#8222;toxicita&#8220; t\u00e9matu trochu vy\u010dichne. Nebo a\u017e v\u011bdeck\u00e9 v\u00fdzkumy kmenov\u00fdch bun\u011bk i jejich vyu\u017eit\u00ed v praxi pokro\u010d\u00ed je\u0161t\u011b o n\u011bco d\u00e1le.<br \/>\nProst\u011b: velk\u00e1 nad\u011bje ano, v\u0161el\u00e9k zat\u00edm ne.<\/p>\n<p>&nbsp;<\/p>\n<p>Silvie Kr\u00e1lov\u00e1<br \/>\nT\u00e9ma<\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"mh-excerpt\"><p>Je to fascinuj\u00edc\u00ed rozepsan\u00e1 kapitola l\u00e9ka\u0159sk\u00e9 v\u011bdy. Dok\u00e1\u017e\u00ed ale kmenov\u00e9 bu\u0148ky skute\u010dn\u011b z\u00e1zraky, jak mnoz\u00ed doufaj\u00ed? Ned\u00e1vn\u00e1 af\u00e9ra, kter\u00e1 zas\u00e1hla \u010desk\u00fd v\u00fdzkum, zvedla vlnu z\u00e1jmu <a class=\"mh-excerpt-more\" href=\"https:\/\/www.invarena.cz\/?p=25920\" title=\"Pravdy i l\u017ei o kmenov\u00fdch bu\u0148k\u00e1ch\">[&#8230;]<\/a><\/p>\n<\/div>","protected":false},"author":1,"featured_media":14161,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-25920","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\/25920","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=25920"}],"version-history":[{"count":0,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/posts\/25920\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/media\/14161"}],"wp:attachment":[{"href":"https:\/\/www.invarena.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=25920"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=25920"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=25920"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}