{"id":74686,"date":"2025-03-22T00:22:26","date_gmt":"2025-03-21T23:22:26","guid":{"rendered":"https:\/\/www.infokuryr.cz\/n\/?p=74686"},"modified":"2025-03-21T16:16:55","modified_gmt":"2025-03-21T15:16:55","slug":"sladidla-v-centru-pozornosti-jak-umela-sladidla-ovlivnuji-srdecni-rytmus","status":"publish","type":"post","link":"https:\/\/www.infokuryr.cz\/n\/2025\/03\/22\/sladidla-v-centru-pozornosti-jak-umela-sladidla-ovlivnuji-srdecni-rytmus\/","title":{"rendered":"Sladidla v centru pozornosti: Jak um\u011bl\u00e1 sladidla ovliv\u0148uj\u00ed srde\u010dn\u00ed rytmus"},"content":{"rendered":"<div id=\"fb-root\"><\/div>\n<p><strong><span>Podle ned\u00e1vn\u00e9 studie mohou um\u011bl\u00e1 sladidla zjevn\u011b ovlivnit srde\u010dn\u00ed rytmus prost\u0159ednictv\u00edm receptor\u016f v srdci. Negativn\u00edmi \u00fa\u010dinky jsou posti\u017eeni zejm\u00e9na lid\u00e9 se srde\u010dn\u00edm selh\u00e1n\u00edm. Existuje souvislost s kardiovaskul\u00e1rn\u00edmi probl\u00e9my.<\/span><\/strong><\/p>\n<p><span>Ned\u00e1vn\u00e1 studie z Loyola University Chicago odhaluje p\u0159ekvapiv\u00e9 souvislosti mezi um\u011bl\u00fdmi sladidly a zdrav\u00edm srdce. V\u011bdci poprv\u00e9 prok\u00e1zali, \u017ee na\u0161e srdce m\u00e1 chu\u0165ov\u00e9 receptory, kter\u00e9 reaguj\u00ed na sladidla, jako je aspartam \u2013 s potenci\u00e1ln\u011b dalekos\u00e1hl\u00fdmi d\u016fsledky.<\/span><\/p>\n<p><a href=\"https:\/\/www.biophysics.org\/news-room?ArtMID=802&amp;ArticleID=16515&amp;preview=true\"><span>V\u011bdci z Loyola University Chicago p\u0159edstavili na 69. v\u00fdro\u010dn\u00edm zased\u00e1n\u00ed Biofyzik\u00e1ln\u00ed spole\u010dnosti v Los Angeles<\/span><\/a><span>\u00a0p\u0159evratn\u00fd objev\u00a0: Lidsk\u00fd srde\u010dn\u00ed sval m\u00e1 speci\u00e1ln\u00ed receptory pro sladkou chu\u0165, podobn\u00e9 t\u011bm na na\u0161em jazyku. Tyto receptory, zn\u00e1m\u00e9 jako TAS1R2 a TAS1R3, reaguj\u00ed na um\u011bl\u00e1 sladidla, jako je aspartam, a p\u0159\u00edmo ovliv\u0148uj\u00ed srde\u010dn\u00ed funkci.<\/span><\/p>\n<p><span>\u201eV\u011b\u0159\u00edme, \u017ee zv\u00fd\u0161en\u00ed hladiny cukru v krvi po j\u00eddle p\u0159\u00edmo interaguje se sladk\u00fdmi receptory v srde\u010dn\u00edm svalu, a t\u00edm m\u011bn\u00ed srde\u010dn\u00ed tep,\u201c\u00a0<\/span><a href=\"https:\/\/www.eurekalert.org\/news-releases\/1073543\"><span>vysv\u011btluje Micah Yoder<\/span><\/a><span>\u00a0, doktorand na Loyola University Chicago. Toto zji\u0161t\u011bn\u00ed by mohlo vysv\u011btlit, pro\u010d byla konzumace sladidel v n\u011bkter\u00fdch studi\u00edch spojov\u00e1na s kardiovaskul\u00e1rn\u00edmi probl\u00e9my.<\/span><\/p>\n<p><span>V\u00fdzkumy ukazuj\u00ed, \u017ee stimulace t\u011bchto receptor\u016f aspartamem vede ke zv\u00fd\u0161en\u00e9 kontrakci srde\u010dn\u00edho svalu. Z\u00e1rove\u0148 se zrychluje tok v\u00e1pn\u00edku v bu\u0148k\u00e1ch \u2013 proces, kter\u00fd je nezbytn\u00fd pro zdrav\u00fd srde\u010dn\u00ed rytmus, ale p\u0159i nadm\u011brn\u00e9 stimulaci m\u016f\u017ee v\u00e9st k arytmi\u00edm.<\/span><\/p>\n<p><span>Zvl\u00e1\u0161t\u011b znepokojiv\u00e9: U pacient\u016f se srde\u010dn\u00edm selh\u00e1n\u00edm bylo v bu\u0148k\u00e1ch srde\u010dn\u00edho svalu detekov\u00e1no podstatn\u011b v\u00edce t\u011bchto sladk\u00fdch receptor\u016f. To by mohlo nazna\u010dovat, \u017ee srdce v oslaben\u00e9m stavu vyu\u017e\u00edv\u00e1 sv\u00e9 zdroje energie jinak a m\u016f\u017ee b\u00fdt zraniteln\u011bj\u0161\u00ed v\u016f\u010di \u00fa\u010dink\u016fm sladidel.<\/span><\/p>\n<p><span>Laboratorn\u00ed testy uk\u00e1zaly, \u017ee bu\u0148ky srde\u010dn\u00edho svalu bij\u00ed nepravideln\u011bji po konzumaci velk\u00e9ho mno\u017estv\u00ed aspartamu. &#8222;Nejen\u017ee jsou tyto chu\u0165ov\u00e9 receptory zvl\u00e1\u0161t\u011b stimulov\u00e1ny um\u011bl\u00fdmi sladidly, jako je aspartam,&#8220; \u0159\u00edk\u00e1 Yoder, &#8222;tak\u00e9 jsem zjistil, \u017ee nadm\u011brn\u00e1 stimulace t\u011bchto receptor\u016f vede ke zv\u00fd\u0161en\u00e9mu v\u00fdskytu chov\u00e1n\u00ed podobn\u00e9ho arytmii v bu\u0148k\u00e1ch srde\u010dn\u00edho svalu.&#8220;<\/span><\/p>\n<p><span>Tato zji\u0161t\u011bn\u00ed mohou vysv\u011btlit, pro\u010d je nadm\u011brn\u00e1 konzumace um\u011ble slazen\u00fdch n\u00e1poj\u016f spojena se srde\u010dn\u00ed arytmi\u00ed. V\u011bdci v\u0161ak zd\u016fraz\u0148uj\u00ed, \u017ee k lep\u0161\u00edmu pochopen\u00ed dlouhodob\u00fdch \u00fa\u010dink\u016f jsou zapot\u0159eb\u00ed dal\u0161\u00ed studie.<\/span><\/p>\n<p><span>Studie vyvol\u00e1v\u00e1 d\u016fle\u017eit\u00e9 ot\u00e1zky o bezpe\u010dnosti um\u011bl\u00fdch sladidel, zejm\u00e9na u lid\u00ed se srde\u010dn\u00edmi chorobami. Zat\u00edmco p\u0159esn\u00e9 mechanismy se st\u00e1le zkoumaj\u00ed, v\u00fdsledky nazna\u010duj\u00ed, \u017ee je t\u0159eba opatrnosti \u2013 zejm\u00e9na p\u0159i pravideln\u00e9 konzumaci produkt\u016f obsahuj\u00edc\u00edch um\u011bl\u00e1 sladidla.<\/span><\/p>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-71983\" src=\"http:\/\/www.infokuryr.cz\/n\/wp-content\/uploads\/2025\/02\/aaa.jpg\" alt=\"\" width=\"89\" height=\"23\" \/><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Podle ned\u00e1vn\u00e9 studie mohou um\u011bl\u00e1 sladidla zjevn\u011b ovlivnit srde\u010dn\u00ed rytmus prost\u0159ednictv\u00edm receptor\u016f v srdci. Negativn\u00edmi&#8230;<\/p>\n","protected":false},"author":2,"featured_media":74687,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[7],"tags":[8741,1556,839,21],"_links":{"self":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/74686"}],"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=74686"}],"version-history":[{"count":0,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/posts\/74686\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/media\/74687"}],"wp:attachment":[{"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/media?parent=74686"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/categories?post=74686"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.infokuryr.cz\/n\/wp-json\/wp\/v2\/tags?post=74686"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}