{"id":25981303,"date":"2025-12-19T07:11:46","date_gmt":"2025-12-19T07:11:46","guid":{"rendered":"https:\/\/www.nutagen.com\/co-jsou-fytonutrienty\/"},"modified":"2025-12-19T07:11:46","modified_gmt":"2025-12-19T07:11:46","slug":"co-jsou-fytonutrienty","status":"publish","type":"post","link":"https:\/\/nutagen.com\/cs\/co-jsou-fytonutrienty\/","title":{"rendered":"Co jsou fytonutrienty?"},"content":{"rendered":"

Fytonutrienty (tak\u00e9 naz\u00fdvan\u00e9 sekund\u00e1rn\u00ed rostlinn\u00e9 l\u00e1tky) jsou bioaktivn\u00ed slou\u010deniny, kter\u00e9 se vyskytuj\u00ed v rostlin\u00e1ch a dod\u00e1vaj\u00ed jim barvu, chu\u0165 a ochranu p\u0159ed \u0161k\u016fdci. A\u010dkoli nejsou pro \u010dlov\u011bka nezbytn\u00e9 jako vitam\u00edny nebo miner\u00e1ly, maj\u00ed \u0159adu zdravotn\u00edch v\u00fdhod.<\/strong><\/p>\n

D\u016fle\u017eit\u00e9 skupiny fytonutrient\u016f a jejich \u00fa\u010dinky<\/h3>\n
    \n
  1. Karotenoidy<\/strong> (nap\u0159. beta-karoten, lutein, lykopen)\n
      \n
    • V\u00fdskyt: mrkev, raj\u010data, \u0161pen\u00e1t<\/li>\n
    • \u00da\u010dinek: antioxida\u010dn\u00ed, chr\u00e1n\u00ed o\u010di, posiluje imunitn\u00ed syst\u00e9m<\/li>\n<\/ul>\n<\/li>\n
    • Flavonoidy<\/strong> (nap\u0159. kvercetin, kaempferol)\n
        \n
      • V\u00fdskyt: bobule, cibule, zelen\u00fd \u010daj<\/li>\n
      • \u00da\u010dinek: protiz\u00e1n\u011btliv\u00fd, podporuje kardiovaskul\u00e1rn\u00ed syst\u00e9m<\/li>\n<\/ul>\n<\/li>\n
      • Glukosinol\u00e1ty<\/strong>\n
          \n
        • V\u00fdskyt: brokolice, zel\u00ed, ho\u0159\u010dice<\/li>\n
        • \u00da\u010dinek: podporuj\u00ed detoxikaci, maj\u00ed protin\u00e1dorov\u00e9 \u00fa\u010dinky<\/li>\n<\/ul>\n<\/li>\n
        • Saponiny<\/strong>\n
            \n
          • V\u00fdskyt: lu\u0161t\u011bniny, oves<\/li>\n
          • \u00da\u010dinek: sni\u017euj\u00ed hladinu cholesterolu, maj\u00ed antibakteri\u00e1ln\u00ed \u00fa\u010dinky<\/li>\n<\/ul>\n<\/li>\n
          • Fenolov\u00e9 kyseliny<\/strong> (nap\u0159. kyselina k\u00e1vov\u00e1)\n
              \n
            • V\u00fdskyt: k\u00e1va, celozrnn\u00e9 v\u00fdrobky<\/li>\n
            • \u00da\u010dinek: antioxida\u010dn\u00ed, protiz\u00e1n\u011btliv\u00fd<\/li>\n<\/ul>\n<\/li>\n
            • Lignany<\/strong>\n
                \n
              • V\u00fdskyt: ln\u011bn\u00e9 sem\u00ednko, sezam<\/li>\n
              • \u00da\u010dinek: regulace hormon\u016f, mo\u017en\u00e1 protin\u00e1dorov\u00fd \u00fa\u010dinek<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n

                Existuje jasn\u00e1 souvislost mezi fytonutrienty a epigenetikou<\/strong>. Epigenetika se t\u00fdk\u00e1 zm\u011bn v genov\u00e9 expresi, kter\u00e9 nejsou zp\u016fsobeny zm\u011bnami v samotn\u00e9 sekvenci DNA, ale chemick\u00fdmi modifikacemi DNA nebo histonov\u00fdch protein\u016f, jako jsou nap\u0159\u00edklad:<\/p>\n

                  \n
                • metylac\u00ed DNA<\/strong> (p\u0159id\u00e1v\u00e1n\u00edm methylov\u00fdch skupin k DNA za \u00fa\u010delem aktivace nebo deaktivace gen\u016f)<\/li>\n
                • Modifikace histon\u016f<\/strong> (zm\u011bna balen\u00ed DNA za \u00fa\u010delem usnadn\u011bn\u00ed nebo zt\u00ed\u017een\u00ed p\u0159\u00edstupu transkrip\u010dn\u00edch faktor\u016f)<\/li>\n
                • Regulace mikroRNA<\/strong> (ovliv\u0148ov\u00e1n\u00ed genov\u00e9 exprese mal\u00fdmi molekulami RNA)<\/li>\n<\/ul>\n

                  Jak jednotliv\u00e9 fytonutrienty ovliv\u0148uj\u00ed epigenetiku (p\u0159\u00edklady)?<\/h3>\n
                    \n
                  1. Kurkumin (z kurkumy)<\/strong>\n
                      \n
                    • Inhibuje DNA metyltransfer\u00e1zy (DNMT), kter\u00e9 jsou zodpov\u011bdn\u00e9 za metylaci.<\/li>\n
                    • Ovliv\u0148uje modifikace histon\u016f a expresi mikroRNA.<\/li>\n
                    • M\u016f\u017ee aktivovat protiz\u00e1n\u011btliv\u00e9 a protin\u00e1dorov\u00e9 geny.<\/li>\n<\/ul>\n<\/li>\n
                    • Resveratrol (z \u010derven\u00fdch hrozn\u016f, \u010derven\u00e9ho v\u00edna)<\/strong>\n
                        \n
                      • Aktivuje sirtuiny (SIRT1), kter\u00e9 jsou spojeny s dlouhov\u011bkost\u00ed a ochranou bun\u011bk.<\/li>\n
                      • Reguluje modifikace histon\u016f a ovliv\u0148uje geny spojen\u00e9 se st\u00e1rnut\u00edm a metabolismem.<\/li>\n<\/ul>\n<\/li>\n
                      • Sulforafan (z brokolice, zel\u00ed)<\/strong>\n
                          \n
                        • Ovliv\u0148uje expresi tumor supresorov\u00fdch gen\u016f inhibic\u00ed metylace DNA.<\/li>\n
                        • Podporuje detoxikaci a mechanismy ochrany bun\u011bk.<\/li>\n<\/ul>\n<\/li>\n
                        • Genistein (ze s\u00f3ji)<\/strong>\n
                            \n
                          • Modifikuje metylaci DNA a acetylaci histon\u016f.<\/li>\n
                          • Sni\u017euje riziko hormon\u00e1ln\u011b z\u00e1visl\u00fdch druh\u016f rakoviny, jako je rakovina prsu a prostaty.<\/li>\n<\/ul>\n<\/li>\n
                          • EGCG (epigallocatechin gallate, ze zelen\u00e9ho a b\u00edl\u00e9ho \u010daje)<\/strong>\n
                              \n
                            • Inhibuje DNMT a reaktivuje potla\u010den\u00e9 tumor supresorov\u00e9 geny.<\/li>\n
                            • Ovliv\u0148uje regulaci mikroRNA a m\u00e1 protiz\u00e1n\u011btliv\u00e9 \u00fa\u010dinky.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n

                              Zdravotn\u00ed v\u00fdznam t\u011bchto epigenetick\u00fdch \u00fa\u010dink\u016f<\/h3>\n
                                \n
                              • Prevence rakoviny<\/strong>: Mnoho fytonutrient\u016f reaktivuje tumor supresorov\u00e9 geny nebo inhibuje geny podporuj\u00edc\u00ed rakovinu.<\/li>\n
                              • St\u00e1rnut\u00ed a dlouhov\u011bkost<\/strong>: Sirtuiny (jako SIRT1) hraj\u00ed kl\u00ed\u010dovou roli ve st\u00e1rnut\u00ed bun\u011bk a mohou b\u00fdt aktivov\u00e1ny ur\u010dit\u00fdmi \u017eivinami.<\/li>\n
                              • Metabolick\u00e1 onemocn\u011bn\u00ed<\/strong>: Fytonutrienty mohou ovliv\u0148ovat epigenetick\u00e9 mechanismy spojen\u00e9 s cukrovkou a obezitou.<\/li>\n
                              • Neuroprotekce<\/strong>: N\u011bkter\u00e9 slou\u010deniny (nap\u0159. kurkumin, resveratrol) maj\u00ed neuroprotektivn\u00ed \u00fa\u010dinky prost\u0159ednictv\u00edm epigenetick\u00e9 regulace a mohou sni\u017eovat riziko vzniku Alzheimerovy a Parkinsonovy choroby.<\/li>\n<\/ul>\n

                                PFytonutrienty maj\u00ed potenci\u00e1l epigeneticky modulovat<\/strong> na\u0161e geny a t\u00edm preventivn\u011b p\u016fsobit proti r\u016fzn\u00fdm nemocem. Strava bohat\u00e1 na rostlinn\u00e9 potraviny tak m\u016f\u017ee pozitivn\u011b ovlivnit nejen na\u0161e sou\u010dasn\u00e9 zdrav\u00ed<\/strong>, ale tak\u00e9 na\u0161i genetickou predispozici<\/strong> a t\u00edm i dlouhov\u011bkost.<\/p>\n","protected":false},"excerpt":{"rendered":"

                                Fytonutrienty (tak\u00e9 zn\u00e1m\u00e9 jako sekund\u00e1rn\u00ed rostlinn\u00e9 l\u00e1tky) jsou bioaktivn\u00ed slou\u010deniny nach\u00e1zej\u00edc\u00ed se v rostlin\u00e1ch, kter\u00e9 jim dod\u00e1vaj\u00ed barvu, chu\u0165 a ochranu p\u0159ed \u0161k\u016fdci. A\u010dkoli nejsou pro \u010dlov\u011bka nezbytn\u00e9 jako vitam\u00edny nebo miner\u00e1ly, maj\u00ed \u0159adu zdravotn\u00edch v\u00fdhod.<\/p>\n","protected":false},"author":1,"featured_media":25981302,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[152],"tags":[],"class_list":["post-25981303","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fytonutrienty"],"_links":{"self":[{"href":"https:\/\/nutagen.com\/cs\/wp-json\/wp\/v2\/posts\/25981303","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nutagen.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nutagen.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nutagen.com\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nutagen.com\/cs\/wp-json\/wp\/v2\/comments?post=25981303"}],"version-history":[{"count":0,"href":"https:\/\/nutagen.com\/cs\/wp-json\/wp\/v2\/posts\/25981303\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nutagen.com\/cs\/wp-json\/wp\/v2\/media\/25981302"}],"wp:attachment":[{"href":"https:\/\/nutagen.com\/cs\/wp-json\/wp\/v2\/media?parent=25981303"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nutagen.com\/cs\/wp-json\/wp\/v2\/categories?post=25981303"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nutagen.com\/cs\/wp-json\/wp\/v2\/tags?post=25981303"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}