{"id":1369406,"date":"2022-08-31T08:39:36","date_gmt":"2022-08-31T06:39:36","guid":{"rendered":"https:\/\/dev.dnaera.com\/cs\/?p=1369406"},"modified":"2022-10-13T14:49:12","modified_gmt":"2022-10-13T12:49:12","slug":"antioxidanty","status":"publish","type":"post","link":"https:\/\/dev.dnaera.com\/cs\/blog\/antioxidanty\/","title":{"rendered":"Antioxidanty &#8211; pro\u010d jsou d\u016fle\u017eit\u00e9 a jak je p\u0159ij\u00edmat"},"content":{"rendered":"\n<p><em>Pojmy jako antioxidanty, voln\u00e9 radik\u00e1ly a&nbsp;oxida\u010dn\u00ed stres jsou \u010dasto sklo\u0148ovan\u00e9 v\u00fdrazy v&nbsp;souvislosti s&nbsp;v\u00fd\u017eivou, imunitou a&nbsp;prevenc\u00ed. V\u00edte ale co tyto pojmy p\u0159esn\u011b znamenaj\u00ed?&nbsp;<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Co jsou voln\u00e9 radik\u00e1ly?<\/h2>\n\n\n\n<p>Voln\u00e9 radik\u00e1ly se ozna\u010duj\u00ed i jako reaktivn\u00ed formy kysl\u00edku, proto\u017ee v\u011bt\u0161inou jde o&nbsp;jeho slou\u010deniny, kter\u00e9 maj\u00ed ve sv\u00e9 molekule jeden nebo v\u00edce nesp\u00e1rovan\u00fdch elektron\u016f. Takov\u00e1 forma kysl\u00edku je vysoce nestabiln\u00ed, a&nbsp;proto rychle reaguje s&nbsp;okoln\u00edmi molekulami, jako jsou proteiny, lipidy nebo DNA. Voln\u00e9 radik\u00e1ly vznikaj\u00ed v&nbsp;bu\u0148ce p\u0159irozen\u011b, p\u0159i\u010dem\u017e hlavn\u00edm p\u016fvodcem jsou bun\u011b\u010dn\u00e9 organely mitochondrie, kter\u00e9 slou\u017e\u00ed jako energetick\u00e9 centrum bu\u0148ky. Za norm\u00e1ln\u00edch okolnost\u00ed dok\u00e1\u017e\u00ed bu\u0148ky voln\u00e9 radik\u00e1ly efektivn\u011b odstranit pomoc\u00ed antioxida\u010dn\u00edch syst\u00e9m\u016f.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"763\" src=\"https:\/\/dev.dnaera.com\/cs\/wp-content\/uploads\/sites\/3\/2022\/08\/antioxidanty_stres_CZ-1024x763.png\" alt=\"\" class=\"wp-image-1369449\" srcset=\"https:\/\/dev.dnaera.com\/cs\/wp-content\/uploads\/sites\/3\/2022\/08\/antioxidanty_stres_CZ-1024x763.png 1024w, https:\/\/dev.dnaera.com\/cs\/wp-content\/uploads\/sites\/3\/2022\/08\/antioxidanty_stres_CZ-300x224.png 300w, https:\/\/dev.dnaera.com\/cs\/wp-content\/uploads\/sites\/3\/2022\/08\/antioxidanty_stres_CZ-768x572.png 768w, https:\/\/dev.dnaera.com\/cs\/wp-content\/uploads\/sites\/3\/2022\/08\/antioxidanty_stres_CZ-1536x1145.png 1536w, https:\/\/dev.dnaera.com\/cs\/wp-content\/uploads\/sites\/3\/2022\/08\/antioxidanty_stres_CZ-2048x1527.png 2048w, https:\/\/dev.dnaera.com\/cs\/wp-content\/uploads\/sites\/3\/2022\/08\/antioxidanty_stres_CZ-600x447.png 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Co se stane pokud se naru\u0161\u00ed rovnov\u00e1ha?<\/h2>\n\n\n\n<p>Pokud dojde k naru\u0161en\u00ed rovnov\u00e1hy mezi ochrann\u00fdm syst\u00e9mem a&nbsp;mno\u017estv\u00edm voln\u00fdch radik\u00e1l\u016f, doch\u00e1z\u00ed k&nbsp;oxida\u010dn\u00edmu stresu a po\u0161kozov\u00e1n\u00ed zm\u00edn\u011bn\u00fdch molekul. To m\u016f\u017ee v\u00e9st ke&nbsp;vzniku mutac\u00ed, ztr\u00e1t\u011b funkce enzym\u016f, naru\u0161en\u00ed bun\u011b\u010dn\u00fdch membr\u00e1n a&nbsp;v&nbsp;kone\u010dn\u00e9m d\u016fsledku a\u017e k&nbsp;programovan\u00e9 smrti bu\u0148ky. <strong>Nadm\u011brnou tvorbu voln\u00fdch radik\u00e1l\u016f &nbsp;ovliv\u0148uje i \u017eivotn\u00ed styl, stres a r\u016fzn\u00e9 dal\u0161\u00ed &nbsp;faktory prost\u0159ed\u00ed.<\/strong> Mezi faktory prost\u0159ed\u00ed pat\u0159\u00ed zejm\u00e9na:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>kou\u0159en\u00ed,&nbsp;<\/li><li>p\u0159\u00edjem alkoholu,&nbsp;<\/li><li>vysok\u00e1 hladina cukru v&nbsp;krvi,&nbsp;<\/li><li>toxiny, nadm\u011brn\u00e9 vystavov\u00e1n\u00ed se UV z\u00e1\u0159en\u00ed,&nbsp;<\/li><li>zne\u010di\u0161t\u011bn\u00ed vzduchu a&nbsp;jin\u00e9.&nbsp;<\/li><\/ul>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pro\u010d je prosp\u011b\u0161n\u00e1 konzumace antioxidant\u016f?<\/h2>\n\n\n\n<p>Krom\u011b zm\u011bny n\u00e1vyk\u016f m\u016f\u017eeme sv\u00fdm bu\u0148k\u00e1m pomoci v&nbsp;boji s&nbsp;oxida\u010dn\u00edm stresem i&nbsp; konzumac\u00ed antioxidant\u016f. Jde o&nbsp;l\u00e1tky, kter\u00e9 maj\u00ed potenci\u00e1l vychyt\u00e1vat a&nbsp;zne\u0161kod\u0148ovat voln\u00e9 radik\u00e1ly, zvy\u0161ovat aktivitu antioxida\u010dn\u00edch syst\u00e9m\u016f, p\u0159\u00edpadn\u011b br\u00e1nit vzniku reaktivn\u00edch forem kysl\u00edku. Antioxidanty mohou b\u00fdt p\u0159\u00edrodn\u00ed nebo syntetick\u00e9. <strong>Pr\u00e1v\u011b p\u0159\u00edrodn\u00ed antioxidanty maj\u00ed podle mnoh\u00fdch studi\u00ed potenci\u00e1l br\u00e1nit vzniku cel\u00e9 \u0161k\u00e1ly onemocn\u011bn\u00ed, mezi kter\u00e9 pat\u0159\u00ed n\u00e1dorov\u00e1 onemocn\u011bn\u00ed, diabetes, z\u00e1n\u011btliv\u00e9 procesy, onemocn\u011bn\u00ed jater, kardiovaskul\u00e1rn\u00ed onemocn\u011bn\u00ed, \u0161ed\u00fd z\u00e1kal, onemocn\u011bn\u00ed ledvin a&nbsp;neurodegenerativn\u00ed choroby.<\/strong> Na vzniku t\u011bchto na pohled nesouvisej\u00edc\u00edch onemocn\u011bn\u00ed se pod\u00edlej\u00ed mnoh\u00e9 geny a \u017eivotn\u00ed styl, av\u0161ak jejich spole\u010dn\u00fdm p\u016fvodcem je pr\u00e1v\u011b oxida\u010dn\u00ed stres. <strong>U\u017e\u00edv\u00e1n\u00ed vysok\u00fdch d\u00e1vek antioxidant\u016f ve form\u011b v\u00fd\u017eivov\u00fdch dopl\u0148k\u016f v\u0161ak m\u016f\u017ee b\u00fdt kontraproduktivn\u00ed a&nbsp;dokonce \u0161kodliv\u00e9.<\/strong> Pokud v\u00e1m jejich u\u017e\u00edv\u00e1n\u00ed nedoporu\u010dil l\u00e9ka\u0159, mnohem lep\u0161\u00ed formou je p\u0159\u00edjem antioxidant\u016f ze stravy.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Skv\u011bl\u00fdm zdrojem antioxidant\u016f je k\u00e1va<\/h2>\n\n\n\n<p>Zauj\u00edmavou skute\u010dnost\u00ed je, \u017ee ve vysp\u011bl\u00e9m sv\u011bt\u011b je nej\u010dast\u011bj\u0161\u00edm zdrojem antioxidant\u016f pr\u00e1v\u011b k\u00e1va, kter\u00e1 je konzumov\u00e1na \u010dast\u011bji ne\u017e jin\u00e9 zdroje antioxidant\u016f. K\u00e1va obsahuje polyfenoly, kter\u00e9 pom\u00e1haj\u00ed p\u0159edch\u00e1zet vzniku diabetu druh\u00e9ho typu, n\u00e1dorov\u00fdch a&nbsp;kardiovaskul\u00e1rn\u00edch onemocn\u011bn\u00ed. D\u00e1le obsahuje tzv. hydroxysko\u0159icov\u00e9 kyseliny, kter\u00e9 velmi efektivn\u011b neutralizuj\u00ed voln\u00e9 radik\u00e1ly. Lid\u00e9, kte\u0159\u00ed pravideln\u011b pij\u00ed k\u00e1vu, maj\u00ed skute\u010dn\u011b sn\u00ed\u017een\u00e9 riziko vzniku diabetu druh\u00e9ho typu (s ka\u017ed\u00fdm \u0161\u00e1lkem denn\u011b o&nbsp;7 %), cirh\u00f3zy jater, kardiovaskul\u00e1rn\u00edch onemocn\u011bn\u00ed a&nbsp;Parkinsonovy \u010di Alzheimerovy choroby. <strong>Konzumace u\u017e jedin\u00e9ho \u0161\u00e1lku k\u00e1vy denn\u011b sn\u00ed\u017eila riziko p\u0159ed\u010dasn\u00e9ho \u00famrt\u00ed o&nbsp;5 &#8211; 6 %.<\/strong> Na druh\u00e9 stran\u011b v\u0161ak maj\u00ed jednotliv\u00ed lid\u00e9 r\u016fznou toleranci na nejzn\u00e1m\u011bj\u0161\u00ed slo\u017eku k\u00e1vy \u2013 kofein. Svou citlivost na kofein m\u016f\u017eete zjistit v&nbsp;na\u0161em testu.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"538\" src=\"https:\/\/dev.dnaera.com\/cs\/wp-content\/uploads\/sites\/3\/2022\/08\/antioxidanty_statistika-1024x538.png\" alt=\"\" class=\"wp-image-1369410\" srcset=\"https:\/\/dev.dnaera.com\/cs\/wp-content\/uploads\/sites\/3\/2022\/08\/antioxidanty_statistika-1024x538.png 1024w, https:\/\/dev.dnaera.com\/cs\/wp-content\/uploads\/sites\/3\/2022\/08\/antioxidanty_statistika-300x158.png 300w, https:\/\/dev.dnaera.com\/cs\/wp-content\/uploads\/sites\/3\/2022\/08\/antioxidanty_statistika-768x403.png 768w, https:\/\/dev.dnaera.com\/cs\/wp-content\/uploads\/sites\/3\/2022\/08\/antioxidanty_statistika-600x315.png 600w, https:\/\/dev.dnaera.com\/cs\/wp-content\/uploads\/sites\/3\/2022\/08\/antioxidanty_statistika.png 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Ovoce a zelenina bohat\u00e9 na antioxidanty<\/h2>\n\n\n\n<p>V&nbsp;p\u0159\u00edpad\u011b&nbsp; p\u0159\u00edrodn\u00edch zdroj\u016f antioxidant\u016f plat\u00ed pravidlo: \u010d\u00edm barevn\u011bj\u0161\u00ed, t\u00edm lep\u0161\u00ed. Zejm\u00e9na v&nbsp;letn\u00edch m\u011bs\u00edc\u00edch m\u00e1me dostupnou celou paletu lok\u00e1ln\u00edch antioxidant\u016f. Mezi p\u0159\u00edrodn\u00ed antioxidanty pat\u0159\u00ed nap\u0159\u00edklad vitam\u00edny C, E a flavonoidy. Mezi zdroje bohat\u00e9 na vitam\u00edn C pat\u0159\u00ed paprika, raj\u010de a&nbsp;brambory. Vysok\u00fd obsah vitam\u00ednu E se zase nach\u00e1z\u00ed v&nbsp;oleji z&nbsp;p\u0161eni\u010dn\u00fdch kl\u00ed\u010dk\u016f, slune\u010dnicov\u00fdch sem\u00ednk\u00e1ch a&nbsp;oleji, v&nbsp;mandl\u00edch a&nbsp;l\u00edskov\u00fdch o\u0159e\u0161\u00edch. Flavonoidy se nach\u00e1zej\u00ed p\u0159edev\u0161\u00edm v&nbsp;bobulov\u00e9m ovoci, p\u0159i\u010dem\u017e nejv\u00edce druh\u016f je zastoupen\u00fdch v&nbsp;ostru\u017ein\u00e1ch, malin\u00e1ch a&nbsp;bor\u016fvk\u00e1ch. Mezi dal\u0161\u00ed zdroje flavonoid\u016f pat\u0159\u00ed nap\u0159\u00edklad \u010derven\u00e9 zel\u00ed, \u010derven\u00e9 v\u00edno a&nbsp;petr\u017eelov\u00e1 v\u0148a\u0165. Dal\u0161\u00ed skupinou antioxidant\u016f jsou karotenoidy, jejich\u017e zdrojem je krom\u011b mrkve i meloun, \u0161pen\u00e1t a&nbsp;mango. Dal\u0161\u00ed d\u016fle\u017eitou skupinou jsou slou\u010deniny obsahuj\u00edc\u00ed organickou s\u00edru &#8211; cibule, \u010desnek.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">D\u016fle\u017eit\u00e1 je rovnov\u00e1ha<\/h2>\n\n\n\n<p>I p\u0159esto, \u017ee se voln\u00e9 radik\u00e1ly v\u011bt\u0161inou spojuj\u00ed s&nbsp;negativn\u00edm efektem, v&nbsp;mal\u00e9m mno\u017estv\u00ed jsou pro na\u0161e t\u011blo d\u016fle\u017eit\u00e9. Reaktivn\u00ed formy kysl\u00edku jsou pot\u0159ebn\u00e9 pro aktivaci mnoh\u00fdch protein\u016f, kter\u00e9 se pod\u00edlej\u00ed na bun\u011b\u010dn\u00e9 signalizaci. Z\u00e1rove\u0148 jsou vyu\u017e\u00edv\u00e1ny bu\u0148kami imunitn\u00edho syst\u00e9mu p\u0159i odstra\u0148ov\u00e1n\u00ed patogen\u016f. Rovnov\u00e1ha mezi voln\u00fdmi radik\u00e1ly a&nbsp;antioxidanty v&nbsp;t\u011ble je d\u016fle\u017eit\u00e1. O&nbsp;v\u00fdznamu za\u0159azen\u00ed antioxidant\u016f do stravy v\u0161ak nen\u00ed pochyb. <strong>Se zji\u0161t\u011bn\u00edm, jak se va\u0161e t\u011blo dok\u00e1\u017ee vypo\u0159\u00e1dat s&nbsp;oxida\u010dn\u00edm stresem, v\u00e1m pom\u016f\u017ee informace o&nbsp;genetick\u00e9 predispozici k aktivit\u011b antioxida\u010dn\u00edch enzym\u016f, kterou m\u016f\u017eete z\u00edskat v&nbsp;na\u0161em <a href=\"https:\/\/dev.dnaera.com\/cs\/cs\/produkt\/dna-complex-test\/\">testu DNA<\/a>.<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/app.dnaera.sk\/sign-in?demo=true&amp;lng=cz\"><img decoding=\"async\" width=\"1024\" height=\"334\" src=\"https:\/\/dev.dnaera.com\/cs\/wp-content\/uploads\/sites\/3\/2022\/05\/CZ_button_blog-1024x334.png\" alt=\"DNA test - jak vypadaj\u00ed v\u00fdsledky\" class=\"wp-image-1368023\" srcset=\"https:\/\/dev.dnaera.com\/cs\/wp-content\/uploads\/sites\/3\/2022\/05\/CZ_button_blog-1024x334.png 1024w, https:\/\/dev.dnaera.com\/cs\/wp-content\/uploads\/sites\/3\/2022\/05\/CZ_button_blog-300x98.png 300w, https:\/\/dev.dnaera.com\/cs\/wp-content\/uploads\/sites\/3\/2022\/05\/CZ_button_blog-768x250.png 768w, https:\/\/dev.dnaera.com\/cs\/wp-content\/uploads\/sites\/3\/2022\/05\/CZ_button_blog-600x196.png 600w, https:\/\/dev.dnaera.com\/cs\/wp-content\/uploads\/sites\/3\/2022\/05\/CZ_button_blog.png 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p><strong>Zdroje:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>Neha, Kumari et al. \u201cMedicinal prospects of antioxidants: A review.\u201d European journal of medicinal chemistry vol. 178 (2019): 687-704. doi:10.1016\/j.ejmech.2019.06.010<\/li><li><a href=\"https:\/\/www.healthline.com\/nutrition\/coffee-worlds-biggest-source-of-antioxidants#benefits\">https:\/\/www.healthline.com\/nutrition\/coffee-worlds-biggest-source-of-antioxidants#benefits<\/a><\/li><li><a href=\"https:\/\/www.medicalnewstoday.com\/articles\/324863\">https:\/\/www.medicalnewstoday.com\/articles\/324863<\/a><\/li><li><a href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/23017782\/\">https:\/\/pubmed.ncbi.nlm.nih.gov\/23017782\/<\/a><\/li><li><a href=\"https:\/\/www.webmd.com\/diet\/foods-high-in-flavonoids#2\">https:\/\/www.webmd.com\/diet\/foods-high-in-flavonoids#2<\/a><\/li><li><a href=\"https:\/\/www.healthline.com\/nutrition\/foods-high-in-vitamin-e\">https:\/\/www.healthline.com\/nutrition\/foods-high-in-vitamin-e<\/a><\/li><li><a href=\"https:\/\/biologydictionary.net\/oxidative-stress\/\">https:\/\/biologydictionary.net\/oxidative-stress\/<\/a><\/li><\/ol>\n\n\n\n<p><\/p>\n\n\n\n<p><strong>Zdroje fotografi\u00ed:&nbsp;<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\"><li><a href=\"https:\/\/unsplash.com\/photos\/TD4DBagg2wE\">https:\/\/unsplash.com\/photos\/TD4DBagg2wE<\/a><\/li><li><a href=\"https:\/\/unsplash.com\/photos\/mUMB4DgGHrs\">https:\/\/unsplash.com\/photos\/mUMB4DgGHrs<\/a>&nbsp;&nbsp;&nbsp;<\/li><li><a href=\"https:\/\/www.pexels.com\/photo\/curly-haired-woman-eating-green-grapes-on-white-background-7680328\/\">https:\/\/www.pexels.com\/photo\/curly-haired-woman-eating-green-grapes-on-white-background-7680328\/<\/a><\/li><\/ol>\n","protected":false},"excerpt":{"rendered":"<p>Pojmy jako antioxidanty, voln\u00e9 radik\u00e1ly a&nbsp;oxida\u010dn\u00ed stres jsou \u010dasto sklo\u0148ovan\u00e9 v\u00fdrazy v&nbsp;souvislosti s&nbsp;v\u00fd\u017eivou, imunitou a&nbsp;prevenc\u00ed. V\u00edte ale co tyto pojmy p\u0159esn\u011b znamenaj\u00ed?&nbsp; Co jsou voln\u00e9 radik\u00e1ly? Voln\u00e9 radik\u00e1ly se ozna\u010duj\u00ed i jako reaktivn\u00ed formy kysl\u00edku, proto\u017ee v\u011bt\u0161inou jde o&nbsp;jeho slou\u010deniny, kter\u00e9 maj\u00ed ve sv\u00e9 molekule jeden nebo v\u00edce nesp\u00e1rovan\u00fdch elektron\u016f. Takov\u00e1 forma kysl\u00edku je vysoce [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":1369371,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"categories":[33],"tags":[59,63],"place-taxonomy":[],"class_list":["post-1369406","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized-cs","tag-dna-test","tag-zaujimavosti"],"acf":[],"views":1809,"_links":{"self":[{"href":"https:\/\/dev.dnaera.com\/cs\/wp-json\/wp\/v2\/posts\/1369406","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dev.dnaera.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dev.dnaera.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dev.dnaera.com\/cs\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/dev.dnaera.com\/cs\/wp-json\/wp\/v2\/comments?post=1369406"}],"version-history":[{"count":5,"href":"https:\/\/dev.dnaera.com\/cs\/wp-json\/wp\/v2\/posts\/1369406\/revisions"}],"predecessor-version":[{"id":1369450,"href":"https:\/\/dev.dnaera.com\/cs\/wp-json\/wp\/v2\/posts\/1369406\/revisions\/1369450"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dev.dnaera.com\/cs\/wp-json\/wp\/v2\/media\/1369371"}],"wp:attachment":[{"href":"https:\/\/dev.dnaera.com\/cs\/wp-json\/wp\/v2\/media?parent=1369406"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dev.dnaera.com\/cs\/wp-json\/wp\/v2\/categories?post=1369406"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dev.dnaera.com\/cs\/wp-json\/wp\/v2\/tags?post=1369406"},{"taxonomy":"place-taxonomy","embeddable":true,"href":"https:\/\/dev.dnaera.com\/cs\/wp-json\/wp\/v2\/place-taxonomy?post=1369406"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}