{"id":88668,"date":"2025-09-27T00:22:13","date_gmt":"2025-09-26T22:22:13","guid":{"rendered":"https:\/\/www.infokuryr.cz\/n\/?p=88668"},"modified":"2025-09-26T12:20:33","modified_gmt":"2025-09-26T10:20:33","slug":"nova-studie-zareni-z-mobilnich-telefonu-20krat-pod-povolenym-limitem-zpusobilo-poskozeni-mozku-u-krys","status":"publish","type":"post","link":"https:\/\/www.infokuryr.cz\/n\/2025\/09\/27\/nova-studie-zareni-z-mobilnich-telefonu-20krat-pod-povolenym-limitem-zpusobilo-poskozeni-mozku-u-krys\/","title":{"rendered":"Nov\u00e1 studie: Z\u00e1\u0159en\u00ed z mobiln\u00edch telefon\u016f 20kr\u00e1t pod povolen\u00fdm limitem zp\u016fsobilo po\u0161kozen\u00ed mozku u krys"},"content":{"rendered":"
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Ml\u00e1\u010fata potkan\u016f \u200b\u200bvystaven\u00e1 \u201ebezpe\u010dn\u00fdm\u201c \u00farovn\u00edm z\u00e1\u0159en\u00ed z mobiln\u00edch telefon\u016f trp\u011bla poruchou neuron\u00e1ln\u00edho v\u00fdvoje a naru\u0161enou chemi\u00ed mozku, zat\u00edmco paraleln\u00ed testy in vitro prok\u00e1zaly po\u0161kozen\u00ed DNA v neuron\u00e1ln\u00edch kmenov\u00fdch bu\u0148k\u00e1ch.<\/span><\/p>\n

Nov\u00e1\u00a0recenzovan\u00e1 studie<\/a>\u00a0publikovan\u00e1 v\u00a0<\/span>\u010dasopise Neurotoxicology<\/span><\/em>\u00a0zjistila, \u017ee ka\u017edodenn\u00ed z\u00e1\u0159en\u00ed z mobiln\u00edch telefon\u016f \u2013 20kr\u00e1t pod povolen\u00fdm bezpe\u010dnostn\u00edm limitem v USA \u2013 naru\u0161uje v\u00fdvoj mozku u ml\u00e1\u010fat potkan\u016f \u200b\u200ba zp\u016fsobuje po\u0161kozen\u00ed DNA v nervov\u00fdch kmenov\u00fdch bu\u0148k\u00e1ch.<\/span><\/p>\n

V\u00fdzkumn\u00edci vystavili b\u0159ez\u00ed krysy a jejich potomky radiofrekven\u010dn\u00edmu z\u00e1\u0159en\u00ed o frekvenci 900 MHz \u2013 standardn\u00edmu p\u00e1smu mobiln\u00edch telefon\u016f \u2013 v limitu pro bezpe\u010dnost cel\u00e9ho t\u011bla 0,08 W\/kg, co\u017e je prahov\u00e1 hodnota doporu\u010den\u00e1 mezin\u00e1rodn\u00edmi regula\u010dn\u00edmi org\u00e1ny (ICNIRP).<\/span><\/p>\n

Pro srovn\u00e1n\u00ed, americk\u00e9 regula\u010dn\u00ed org\u00e1ny (FCC) povoluj\u00ed mobiln\u00edm telefon\u016fm dod\u00e1vat a\u017e 1,6 W\/kg jako lokalizovanou d\u00e1vku v bl\u00edzkosti hlavy \u2013 dvacetkr\u00e1t v\u00edce ne\u017e \u00farove\u0148 pou\u017eit\u00e1 v t\u00e9to studii.<\/span><\/p>\n

I p\u0159i tomto nepatrn\u00e9m zlomku povolen\u00e9ho maxima vykazovaly mlad\u00e9 krysy jasn\u00e9 zn\u00e1mky po\u0161kozen\u00ed mozku a bun\u011b\u010dn\u00e9ho stresu \u2013 v\u010detn\u011b men\u0161\u00edho po\u010dtu proliferuj\u00edc\u00edch mozkov\u00fdch bun\u011bk, sn\u00ed\u017een\u00e9 tvorby synaps\u00ed a naru\u0161en\u00e9 chemie mozku:<\/span><\/p>\n

M\u00e9n\u011b mozkov\u00fdch bun\u011bk a synaps\u00ed<\/span><\/h3>\n

Ml\u00e1\u010fata potkan\u016f \u200b\u200bvystaven\u00e1 p\u016fsoben\u00ed p\u0159ed a po narozen\u00ed m\u011bla m\u00e9n\u011b proliferuj\u00edc\u00edch mozkov\u00fdch bun\u011bk v hipokampu a kortexu, spolu se sn\u00ed\u017eenou tvorbou synaps\u00ed a zm\u011bn\u011bnou excita\u010dn\u00ed\/inhibi\u010dn\u00ed rovnov\u00e1hou b\u011bhem kl\u00ed\u010dov\u00fdch v\u00fdvojov\u00fdch obdob\u00ed.<\/span><\/p>\n

Naru\u0161en\u00e1 chemie mozku<\/span><\/h3>\n

Hladiny BDNF \u2013 proteinu z\u00e1sadn\u00edho pro u\u010den\u00ed a pam\u011b\u0165 \u2013 se u exponovan\u00fdch zv\u00ed\u0159at sn\u00ed\u017eily. Posun synaptick\u00e9 rovnov\u00e1hy sm\u011brem k inhibici odpov\u00edd\u00e1 vzorc\u016fm spojen\u00fdm s kognitivn\u00edm posti\u017een\u00edm a neurov\u00fdvojov\u00fdmi poruchami.<\/span><\/p>\n

Zm\u011bn\u011bn\u00e1 dr\u00e1ha bun\u011b\u010dn\u00e9ho osudu v mozku<\/span><\/h3>\n

Kmenov\u00e9 bu\u0148ky v kultu\u0159e m\u011bly men\u0161\u00ed pravd\u011bpodobnost tvorby neuron\u016f a v\u011bt\u0161\u00ed pravd\u011bpodobnost tvorby gliov\u00fdch bun\u011bk (astrocyt\u016f, prekurzor\u016f oligodendrocyt\u016f), co\u017e nazna\u010duje dlouhodob\u00fd posun ve v\u00fdvoji mozkov\u00fdch bun\u011bk.<\/span><\/p>\n

Po\u0161kozen\u00ed DNA a bun\u011b\u010dn\u00e1 smrt<\/span><\/h3>\n

Nervov\u00e9 kmenov\u00e9 bu\u0148ky vystaven\u00e9 \u201elimitu ve\u0159ejn\u00e9 bezpe\u010dnosti\u201c 0,08 W\/kg vyvinuly dvou\u0159et\u011bzcov\u00e9 zlomy DNA, zv\u00fd\u0161enou apopt\u00f3zu (bun\u011b\u010dnou smrt) a nadm\u011brnou proliferaci vyvolanou stresem.<\/span><\/p>\n

Oxida\u010dn\u00ed stres nen\u00ed hlavn\u00edm faktorem<\/span><\/h3>\n

Studie m\u011b\u0159ila markery oxida\u010dn\u00edho stresu v mozku potkan\u016f, ale nezjistila \u017e\u00e1dn\u00e9 v\u00fdznamn\u00e9 zm\u011bny. To nazna\u010duje, \u017ee hlavn\u00edmi drahami po\u0161kozen\u00ed byla integrita DNA a zm\u011bn\u011bn\u00e1 bun\u011b\u010dn\u00e1 diferenciace, nikoli prim\u00e1rn\u011b oxida\u010dn\u00ed stres.<\/span><\/p>\n

V\u0161echny tyto \u00fa\u010dinky byly pozorov\u00e1ny p\u0159i 0,08 W\/kg \u2013 co\u017e je prahov\u00e1 hodnota \u201eve\u0159ejn\u00e9 bezpe\u010dnosti\u201c ICNIRP pro expozici cel\u00e9ho t\u011bla. Pro srovn\u00e1n\u00ed, mobiln\u00ed telefony v USA mohou vyza\u0159ovat a\u017e 1,6 W\/kg v oblasti hlavy (lokalizovan\u00e1 expozice) \u2013 co\u017e je \u00farove\u0148 20kr\u00e1t vy\u0161\u0161\u00ed ne\u017e \u00farove\u0148, kter\u00e1 v t\u00e9to studii zp\u016fsobila po\u0161kozen\u00ed.<\/span><\/p>\n

Tato experiment\u00e1ln\u00ed data pom\u00e1haj\u00ed vysv\u011btlit, pro\u010d Setia a kol. zjistili, \u017ee vysok\u00e1 expozice bezdr\u00e1tov\u00e9mu elektromagnetick\u00e9mu z\u00e1\u0159en\u00ed v\u00edce ne\u017e ztrojn\u00e1sobuje riziko v\u00fdvojov\u00e9ho zpo\u017ed\u011bn\u00ed u kojenc\u016f.<\/span><\/p>\n

Jedna v\u011bc je jasn\u00e1: elektromagnetick\u00e9 pole nejsou ne\u0161kodn\u00e1. Jen proto, \u017ee jsou pouh\u00fdm okem neviditeln\u00e1, neznamen\u00e1, \u017ee nemaj\u00ed \u017e\u00e1dn\u00fd \u00fa\u010dinek. D\u016fkazy nazna\u010duj\u00ed, \u017ee vyv\u00edjej\u00edc\u00ed se d\u011bti jsou obzvl\u00e1\u0161t\u011b zraniteln\u00e9 a trp\u00ed nejv\u00edce nep\u0159\u00edzniv\u00fdmi \u00fa\u010dinky vystaven\u00ed elektromagnetick\u00fdm pol\u00edm. Denn\u00ed expozice by m\u011bla b\u00fdt minimalizov\u00e1na, kdykoli je to mo\u017en\u00e9.<\/span><\/p>\n

od Nicolase Hulschera, MPH<\/span><\/em><\/p>\n<\/div>\n<\/div>\n

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Zdroj<\/span><\/a><\/span><\/h3>\n

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

Ml\u00e1\u010fata potkan\u016f \u200b\u200bvystaven\u00e1 \u201ebezpe\u010dn\u00fdm\u201c \u00farovn\u00edm z\u00e1\u0159en\u00ed z mobiln\u00edch telefon\u016f trp\u011bla poruchou neuron\u00e1ln\u00edho v\u00fdvoje a naru\u0161enou…<\/p>\n","protected":false},"author":2,"featured_media":72873,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[7],"tags":[8170,2252,839,1805],"_links":{"self":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/88668"}],"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=88668"}],"version-history":[{"count":0,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/88668\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/media\/72873"}],"wp:attachment":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/media?parent=88668"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/categories?post=88668"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/tags?post=88668"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}