{"id":115271,"date":"2026-09-08T00:18:35","date_gmt":"2026-09-07T22:18:35","guid":{"rendered":"https:\/\/www.infokuryr.cz\/n\/?p=115271"},"modified":"2026-09-07T13:22:01","modified_gmt":"2026-09-07T11:22:01","slug":"tichy-saboter-jako-nadbytecne-zelezo-poskozuje-mozek-dlouho-pred-prvnimi-priznaky-alzheimera","status":"publish","type":"post","link":"https:\/\/www.infokuryr.cz\/n\/2026\/09\/08\/tichy-saboter-jako-nadbytecne-zelezo-poskozuje-mozek-dlouho-pred-prvnimi-priznaky-alzheimera\/","title":{"rendered":"Tich\u00fd sabot\u00e9r: Jako nadbyte\u010dn\u00e9 \u017eelezo po\u0161kozuje mozek dlouho p\u0159ed prvn\u00edmi p\u0159\u00edznaky Alzheimera"},"content":{"rendered":"
<\/div>\n

L\u00e9ka\u0159sk\u00e1 v\u011bda se cel\u00e1 desetilet\u00ed soust\u0159edila zejm\u00e9na na b\u00edlkovinn\u00e9 plaky jako jeden z hlavn\u00edch mechanism\u016f Alzheimerovy choroby.<\/span><\/strong><\/p>\n

Nov\u011bj\u0161\u00ed v\u00fdzkumy v\u0161ak upozor\u0148uj\u00ed i \u200b\u200bna dal\u0161\u00edho mo\u017en\u00e9ho vin\u00edka – naru\u0161en\u00e9 hospoda\u0159en\u00ed se \u017eelezem a jeho nadm\u011brn\u00e9 hromad\u011bn\u00ed v mozku.<\/span><\/p>\n

Kdy\u017e se \u017eelezo stane nebezpe\u010dn\u00fdm<\/span><\/h2>\n

\u017delezo je nezbytn\u00e9 pro p\u0159enos kysl\u00edku i spr\u00e1vn\u00e9 fungov\u00e1n\u00ed bun\u011bk. S p\u0159ib\u00fdvaj\u00edc\u00edm v\u011bkem se v\u0161ak v n\u011bkter\u00fdch oblastech mozku za\u010d\u00edn\u00e1 hromadit.<\/span><\/p>\n

Pokud jej bu\u0148ky nedok\u00e1\u017eou bezpe\u010dn\u011b v\u00e1zat a zpracovat, podporuje oxida\u010dn\u00ed stres a po\u0161kozov\u00e1n\u00ed bun\u011b\u010dn\u00fdch membr\u00e1n. Tento proces se m\u016f\u017ee rozv\u00edjet roky p\u0159ed prvn\u00edmi poruchami pam\u011bti.<\/span><\/p>\n

Studie publikovan\u00e1 v \u010dasopise\u00a0<\/span>Alzheimer’s & Dementia<\/span><\/em>\u00a0zkoumala mozkovou tk\u00e1\u0148 zdrav\u00fdch lid\u00ed, pacient\u016f s Alzheimerovou chorobou a lid\u00ed s Downov\u00fdm syndromem, u kter\u00fdch se rovn\u011b\u017e rozvinula Alzheimerova choroba.<\/span><\/p>\n

Pr\u00e1v\u011b posledn\u00ed skupina m\u011bla ve zkouman\u00fdch oblastech mozku souvisej\u00edc\u00edch s pam\u011bt\u00ed podstatn\u011b v\u00edce \u017eeleza ne\u017e lid\u00e9 se sporadickou formou onemocn\u011bn\u00ed. V\u011bdci zaznamenali tak\u00e9 vy\u0161\u0161\u00ed \u00farove\u0148 lipidov\u00e9 peroxidace \u2013 procesu, p\u0159i kter\u00e9m \u017eelezo podporuje oxidaci tuk\u016f a naru\u0161uje bun\u011b\u010dn\u00e9 membr\u00e1ny.<\/span><\/p>\n

Oslabeny byly tak\u00e9 n\u011bkter\u00e9 p\u0159irozen\u00e9 ochrann\u00e9 mechanismy. Klesla aktivita enzym\u016f neutralizuj\u00edc\u00edch produkty oxidace a naru\u0161ila se tvorba glutathionu, jednoho z nejd\u016fle\u017eit\u011bj\u0161\u00edch antioxidant\u016f v bu\u0148k\u00e1ch.<\/span><\/p>\n

Lid\u00e9 s Downov\u00fdm syndromem p\u0159edstavuj\u00ed zvl\u00e1\u0161tn\u00ed skupinu, proto\u017ee maj\u00ed t\u0159et\u00ed kopii genu APP souvisej\u00edc\u00edho s tvorbou amyloidu. Zji\u0161t\u011bn\u00ed proto nelze automaticky p\u0159en\u00e9st na celou populaci. Pom\u00e1haj\u00ed v\u0161ak objasnit, jak se \u017eelezo, amyloid a oxida\u010dn\u00ed po\u0161kozen\u00ed navz\u00e1jem ovliv\u0148uj\u00ed.<\/span><\/p>\n

Odkud se \u017eelezo v mozku bere<\/span><\/h2>\n

Jedn\u00edm z mo\u017en\u00fdch zdroj\u016f jsou drobn\u00e1, \u010dasto nezji\u0161t\u011bn\u00e1 krv\u00e1cen\u00ed do mozku ozna\u010dovan\u00e1 jako mikrokrv\u00e1cen\u00ed. P\u0159i mikroskopick\u00e9m po\u0161kozen\u00ed c\u00e9v pronikne krev do okoln\u00ed tk\u00e1n\u011b. Po jej\u00edm rozkladu z\u016fst\u00e1vaj\u00ed slou\u010deniny bohat\u00e9 na \u017eelezo, kter\u00e9 se postupn\u011b ukl\u00e1daj\u00ed.<\/span><\/p>\n

K tomuto procesu p\u0159isp\u00edv\u00e1 vysok\u00fd krevn\u00ed tlak, cukrovka a dal\u0161\u00ed onemocn\u011bn\u00ed oslabuj\u00edc\u00ed c\u00e9vy. I proto se zdrav\u00ed srdce a c\u00e9v st\u00e1le \u010dast\u011bji spojuje se zachov\u00e1n\u00edm pam\u011bti ve vy\u0161\u0161\u00edm v\u011bku.<\/span><\/p>\n

Mikrokrev\u00e1cen\u00ed v\u0161ak nejsou jedin\u00fdm mo\u017en\u00fdm zdrojem. Roli hraje tak\u00e9 rozpad myelinu, naru\u0161en\u00e1 hematoencefalick\u00e1 bari\u00e9ra a zm\u011bny v proteinech, kter\u00e9 \u017eelezo p\u0159en\u00e1\u0161ej\u00ed a ukl\u00e1daj\u00ed.<\/span><\/p>\n

Rozhoduj\u00edc\u00ed tedy nen\u00ed jen jeho celkov\u00e9 mno\u017estv\u00ed, ale tak\u00e9 m\u00edsto ulo\u017een\u00ed a schopnost bun\u011bk udr\u017eet jej v bezpe\u010dn\u011b v\u00e1zan\u00e9 form\u011b.<\/span><\/p>\n

Ferropt\u00f3za: bun\u011b\u010dn\u00e1 smrt poh\u00e1n\u011bn\u00e1 \u017eelezem<\/span><\/h2>\n

V\u00fdzkum v\u011bdc\u016f z Oregonsk\u00e9 univerzity zdrav\u00ed a v\u011bd, publikovan\u00fd v \u010dasopise\u00a0<\/span>Annals of Neurology<\/span><\/em>\u00a0, se zam\u011b\u0159il na zvl\u00e1\u0161tn\u00ed formu bun\u011b\u010dn\u00e9 smrti zvanou ferropt\u00f3za. Vznik\u00e1 tehdy, kdy\u017e \u017eelezo spust\u00ed intenzivn\u00ed oxidaci tuk\u016f v bun\u011b\u010dn\u00fdch membr\u00e1n\u00e1ch a p\u0159irozen\u00e1 antioxida\u010dn\u00ed ochrana ji\u017e nedok\u00e1\u017ee po\u0161kozen\u00ed zastavit.<\/span><\/p>\n

V\u011bdci zkoumali zejm\u00e9na mikroglie \u2013 imunitn\u00ed bu\u0148ky mozku, kter\u00e9 odstra\u0148uj\u00ed po\u0161kozenou tk\u00e1\u0148.<\/span><\/p>\n

Kdy\u017e se za\u010dne rozpadat myelin, ochrann\u00fd obal nervov\u00fdch vl\u00e1ken, mikroglie pohlcuj\u00ed jeho zbytky bohat\u00e9 na tuky a \u017eelezo. Postupn\u011b se jimi p\u0159et\u00ed\u017e\u00ed a odum\u00edraj\u00ed.<\/span><\/p>\n

Mozek tak ztr\u00e1c\u00ed \u010d\u00e1st schopnosti odstra\u0148ovat po\u0161kozenou tk\u00e1\u0148. Hromad\u00ed se dal\u0161\u00ed zbytky, zhor\u0161uje se obnova myelinu a vznik\u00e1 za\u010darovan\u00fd kruh spojovan\u00fd s po\u0161kozov\u00e1n\u00edm b\u00edl\u00e9 hmoty a postupn\u00fdm \u00fabytkem kognitivn\u00edch schopnost\u00ed.<\/span><\/p>\n

Pro\u010d je tento v\u00fdzkum d\u016fle\u017eit\u00fd<\/span><\/h2>\n

V\u00edce ne\u017e dv\u011b desetilet\u00ed dominovala v\u00fdzkumu Alzheimerovy choroby amyloidov\u00e1 hypot\u00e9za. Miliardy dolar\u016f sm\u011b\u0159ovaly do l\u00e9k\u016f zam\u011b\u0159en\u00fdch na amyloidov\u00e9 plaky, p\u0159i\u010dem\u017e mnoh\u00e9 klinick\u00e9 zkou\u0161ky p\u0159inesly neuspokojiv\u00e9 v\u00fdsledky.<\/span><\/p>\n

Nov\u011bj\u0161\u00ed protil\u00e1tky dok\u00e1zaly u n\u011bkter\u00fdch pacient\u016f v \u010dasn\u00e9m stadiu zpomalit postup onemocn\u011bn\u00ed, ale nezastavuj\u00ed ho. V\u011bdci proto zkoumaj\u00ed i dal\u0161\u00ed mechanismy v\u010detn\u011b z\u00e1n\u011btu, po\u0161kozen\u00ed c\u00e9v, poruch energetick\u00e9ho metabolismu a ferropt\u00f3zy.<\/span><\/p>\n

Zv\u00fd\u0161en\u00e9 mno\u017estv\u00ed \u017eeleza v mozc\u00edch lid\u00ed s neurodegenerativn\u00edmi onemocn\u011bn\u00edmi si v\u00fdzkumn\u00edci v\u0161imli ji\u017e p\u0159ed desetilet\u00edmi. A\u017e modern\u00ed zobrazovac\u00ed a laboratorn\u00ed metody v\u0161ak umo\u017enily podrobn\u011bji sledovat jeho vliv na mikroglie, myelin a bun\u011b\u010dn\u00e9 membr\u00e1ny.<\/span><\/p>\n

Podle aktu\u00e1ln\u00edch odhad\u016f \u017eije jen v USA s Alzheimerovou demenc\u00ed p\u0159ibli\u017en\u011b 7,4 milionu lid\u00ed ve v\u011bku nad 65 let. Do poloviny stolet\u00ed se jejich po\u010det p\u0159ibl\u00ed\u017e\u00ed 13 milion\u016fm. Hled\u00e1n\u00ed ovlivniteln\u00fdch rizikov\u00fdch faktor\u016f je proto st\u00e1le nal\u00e9hav\u011bj\u0161\u00ed.<\/span><\/p>\n

Co prozrad\u00ed krevn\u00ed testy<\/span><\/h2>\n

Z\u00e1kladn\u00edm ukazatelem z\u00e1sob \u017eeleza v t\u011ble je feritin. Samotn\u00e1 hodnota v\u0161ak neposkytuje \u00fapln\u00fd obraz. Feritin stoup\u00e1 i p\u0159i z\u00e1n\u011btech, infekc\u00edch, metabolick\u00fdch poruch\u00e1ch \u010di onemocn\u011bn\u00edch jater a neukazuje p\u0159\u00edmo mno\u017estv\u00ed \u017eeleza v mozku.<\/span><\/p>\n

P\u0159i podez\u0159en\u00ed na jeho nadbytek se proto posuzuje spolu s krevn\u00edm obrazem, s\u00e9rov\u00fdm \u017eelezem, transferrinem a saturac\u00ed transferrinu. V\u00fdsledky z\u00e1vis\u00ed na v\u011bku, pohlav\u00ed, zdravotn\u00edm stavu i referen\u010dn\u00edm rozsahu laborato\u0159e.<\/span><\/p>\n

N\u011bkte\u0159\u00ed l\u00e9ka\u0159i funk\u010dn\u00ed medic\u00edny pova\u017euj\u00ed za p\u0159\u00edznivou orienta\u010dn\u00ed hodnotu feritinu p\u0159ibli\u017en\u011b 60 a\u017e 75 ng\/ml.<\/span><\/p>\n

Toto rozp\u011bt\u00ed v\u0161ak nen\u00ed univerz\u00e1ln\u00edm c\u00edlem ani ukazatelem rizika Alzheimerovy choroby. Podstatn\u00e9 je zachytit v\u00fdrazn\u011b nebo dlouhodob\u011b zv\u00fd\u0161enou hladinu a odhalit jej\u00ed p\u0159\u00ed\u010dinu.<\/span><\/p>\n

Jak sn\u00ed\u017eit riziko p\u0159et\u00ed\u017een\u00ed \u017eelezem<\/span><\/h2>\n

Pokud vy\u0161et\u0159en\u00ed potvrd\u00ed nadbytek \u017eeleza, dal\u0161\u00ed postup z\u00e1vis\u00ed na jeho p\u0159\u00ed\u010din\u011b. L\u00e9ka\u0159 m\u016f\u017ee doporu\u010dit \u00fapravu j\u00eddeln\u00ed\u010dku, dopl\u0148uj\u00edc\u00ed vy\u0161et\u0159en\u00ed nebo \u0159\u00edzen\u00e9 odb\u011bry krve, kter\u00e9 se vyu\u017e\u00edvaj\u00ed zejm\u00e9na p\u0159i hemochromat\u00f3ze a podobn\u00fdch poruch\u00e1ch.<\/span><\/p>\n

Z\u00e1soby \u017eeleza sni\u017euje tak\u00e9 pravideln\u00e9 darov\u00e1n\u00ed krve. P\u0159i jednom odb\u011bru t\u011blo ztrat\u00ed p\u0159ibli\u017en\u011b 200 a\u017e 250 mg \u017eeleza. Po\u010det odb\u011br\u016f si v\u0161ak nen\u00ed t\u0159eba ur\u010dovat sv\u00e9voln\u011b, proto\u017ee p\u0159\u00edli\u0161 \u010dast\u00e9 darov\u00e1n\u00ed m\u016f\u017ee v\u00e9st k vy\u010derp\u00e1n\u00ed z\u00e1sob, \u00fanav\u011b a chudokrevnosti.<\/span><\/p>\n

Zast\u00e1nci integrativn\u00edho p\u0159\u00edstupu doporu\u010duj\u00ed omezit vysoce pr\u016fmyslov\u011b zpracovan\u00e9 potraviny a opakovan\u011b p\u0159eh\u0159\u00edvan\u00e9 oleje, kter\u00e9 snadno oxiduj\u00ed. Nen\u00ed v\u0161ak t\u0159eba nahradit v\u0161echny rostlinn\u00e9 oleje\u00a0<\/span>m\u00e1slem<\/span><\/a>\u00a0nebo kokosov\u00fdm olejem. Vhodn\u011bj\u0161\u00ed je pestr\u00e1 strava s p\u0159im\u011b\u0159en\u00fdm mno\u017estv\u00edm kvalitn\u00edch tuk\u016f.<\/span><\/p>\n

\u010cesnek, cibule, zeln\u00e1 zelenina a dal\u0161\u00ed potraviny obsahuj\u00edc\u00ed slou\u010deniny s\u00edry dod\u00e1vaj\u00ed t\u011blu l\u00e1tky pot\u0159ebn\u00e9 pro tvorbu glutathionu. Samy o sob\u011b Alzheimerov\u011b chorob\u011b nezabr\u00e1n\u00ed, ale podporuj\u00ed p\u0159irozenou antioxida\u010dn\u00ed ochranu.<\/span><\/p>\n

Nejv\u011bt\u0161\u00ed praktick\u00fd v\u00fdznam m\u00e1 p\u00e9\u010de o c\u00e9vy: kontrola krevn\u00edho tlaku a cukru v krvi, pravideln\u00fd pohyb, nekou\u0159en\u00ed, dostatek sp\u00e1nku a vyv\u00e1\u017een\u00e1 strava. Tato opat\u0159en\u00ed omezuj\u00ed po\u0161kozov\u00e1n\u00ed drobn\u00fdch c\u00e9v a z\u00e1rove\u0148 sni\u017euj\u00ed \u0159adu rizik spojen\u00fdch s kognitivn\u00edm \u00fapadkem.<\/span><\/p>\n

Z\u00e1v\u011br<\/span><\/h2>\n

Alzheimerova choroba neza\u010d\u00edn\u00e1 prvn\u00edm zapomenut\u00fdm jm\u00e9nem ani ztracen\u00fdmi kl\u00ed\u010di. Patologick\u00e9 zm\u011bny se v mozku rozv\u00edjej\u00ed cel\u00e1 l\u00e9ta, n\u011bkdy desetilet\u00ed p\u0159ed viditeln\u00fdmi p\u0159\u00edznaky.<\/span><\/p>\n

Nov\u00e9 poznatky ukazuj\u00ed, \u017ee p\u0159i onemocn\u011bn\u00ed se nejedn\u00e1 pouze o amyloidov\u00e9 plaky. D\u016fle\u017eitou roli hraj\u00ed tak\u00e9 c\u00e9vy, myelin, antioxida\u010dn\u00ed ochrana a schopnost bun\u011bk bezpe\u010dn\u011b zpracovat \u017eelezo. Pokud se tato rovnov\u00e1ha naru\u0161\u00ed, ferropt\u00f3za p\u0159isp\u00edv\u00e1 k po\u0161kozov\u00e1n\u00ed mozkov\u00e9 tk\u00e1n\u011b.<\/span><\/p>\n

P\u00e9\u010de o tlak, metabolismus, c\u00e9vy a p\u0159im\u011b\u0159en\u00e9 z\u00e1soby \u017eeleza se tak st\u00e1v\u00e1 sou\u010d\u00e1st\u00ed ochrany mozku d\u00e1vno p\u0159edt\u00edm, ne\u017e se objev\u00ed prvn\u00ed v\u00fdpadky pam\u011bti.<\/span><\/p>\n

Autor: Willow Tohi, Zdroj:\u00a0<\/span>naturalnews.com<\/span><\/a><\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

L\u00e9ka\u0159sk\u00e1 v\u011bda se cel\u00e1 desetilet\u00ed soust\u0159edila zejm\u00e9na na b\u00edlkovinn\u00e9 plaky jako jeden z hlavn\u00edch mechanism\u016f…<\/p>\n","protected":false},"author":2,"featured_media":115272,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[7],"tags":[2958,2252,21,11593],"_links":{"self":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/115271"}],"collection":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/comments?post=115271"}],"version-history":[{"count":0,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/115271\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/media\/115272"}],"wp:attachment":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/media?parent=115271"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/categories?post=115271"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/tags?post=115271"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}