{"id":11759,"date":"2025-10-20T18:18:52","date_gmt":"2025-10-20T18:18:52","guid":{"rendered":"https:\/\/miamedic.lt\/?page_id=11759"},"modified":"2025-10-20T18:19:31","modified_gmt":"2025-10-20T18:19:31","slug":"vitaminas-a","status":"publish","type":"page","link":"https:\/\/miamedic.lt\/en\/vitaminas-a\/","title":{"rendered":"Vitaminas A"},"content":{"rendered":"<div data-elementor-type=\"wp-page\" data-elementor-id=\"11759\" class=\"elementor elementor-11759\">\n\t\t\t\t<div class=\"elementor-element elementor-element-62083d34 e-flex e-con-boxed e-con e-parent\" data-id=\"62083d34\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-1b921919 e-con-full e-flex e-con e-child\" data-id=\"1b921919\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3f857a6b elementor-widget elementor-widget-image\" data-id=\"3f857a6b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1800\" height=\"1800\" src=\"https:\/\/miamedic.lt\/wp-content\/uploads\/2025\/10\/laboratoriniai-tyrimai-miamedic.png\" class=\"attachment-full size-full wp-image-11572\" alt=\"laboratoriniai tyrimai miamedic\" srcset=\"https:\/\/miamedic.lt\/wp-content\/uploads\/2025\/10\/laboratoriniai-tyrimai-miamedic.png 1800w, https:\/\/miamedic.lt\/wp-content\/uploads\/2025\/10\/laboratoriniai-tyrimai-miamedic-460x460.png 460w, https:\/\/miamedic.lt\/wp-content\/uploads\/2025\/10\/laboratoriniai-tyrimai-miamedic-1520x1520.png 1520w, https:\/\/miamedic.lt\/wp-content\/uploads\/2025\/10\/laboratoriniai-tyrimai-miamedic-115x115.png 115w, https:\/\/miamedic.lt\/wp-content\/uploads\/2025\/10\/laboratoriniai-tyrimai-miamedic-760x760.png 760w, https:\/\/miamedic.lt\/wp-content\/uploads\/2025\/10\/laboratoriniai-tyrimai-miamedic-12x12.png 12w, https:\/\/miamedic.lt\/wp-content\/uploads\/2025\/10\/laboratoriniai-tyrimai-miamedic-920x920.png 920w, https:\/\/miamedic.lt\/wp-content\/uploads\/2025\/10\/laboratoriniai-tyrimai-miamedic-145x145.png 145w, https:\/\/miamedic.lt\/wp-content\/uploads\/2025\/10\/laboratoriniai-tyrimai-miamedic-290x290.png 290w, https:\/\/miamedic.lt\/wp-content\/uploads\/2025\/10\/laboratoriniai-tyrimai-miamedic-50x50.png 50w, https:\/\/miamedic.lt\/wp-content\/uploads\/2025\/10\/laboratoriniai-tyrimai-miamedic-100x100.png 100w\" sizes=\"(max-width: 1800px) 100vw, 1800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-39c72cc e-con-full e-flex e-con e-child\" data-id=\"39c72cc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7cba1233 elementor-widget elementor-widget-ideapark-heading\" data-id=\"7cba1233\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"ideapark-heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"c-ip-heading c-ip-heading--small c-ip-heading--center c-ip-heading--bullet-hide\"><span class=\"c-ip-heading__inner\">LABORATORINIAI TYRIMAI<\/span><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7c768ec0 elementor-widget elementor-widget-ideapark-heading\" data-id=\"7c768ec0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"ideapark-heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"c-ip-heading c-ip-heading--medium c-ip-heading--center c-ip-heading--bullet-hide\"><span class=\"c-ip-heading__inner\">Vitaminas A<\/span><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1ecaaffa elementor-widget elementor-widget-ideapark-heading\" data-id=\"1ecaaffa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"ideapark-heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"c-ip-heading c-ip-heading--medium c-ip-heading--center c-ip-heading--bullet-hide\"><span class=\"c-ip-heading__inner\">Prek\u0117s kodas: 18916<\/span><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7cbc5522 e-con-full e-flex e-con e-child\" data-id=\"7cbc5522\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-61e6625 e-con-full e-flex e-con e-child\" data-id=\"61e6625\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-438c2fae elementor-widget elementor-widget-heading\" data-id=\"438c2fae\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">90,00 \u20ac<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4c1a2366 e-con-full e-flex e-con e-child\" data-id=\"4c1a2366\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1cc7a728 elementor-view-default elementor-position-block-start elementor-mobile-position-block-start elementor-widget elementor-widget-icon-box\" data-id=\"1cc7a728\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-box-wrapper\">\n\n\t\t\t\t\t\t<div class=\"elementor-icon-box-icon\">\n\t\t\t\t<span  class=\"elementor-icon\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-info-circle\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M256 8C119.043 8 8 119.083 8 256c0 136.997 111.043 248 248 248s248-111.003 248-248C504 119.083 392.957 8 256 8zm0 110c23.196 0 42 18.804 42 42s-18.804 42-42 42-42-18.804-42-42 18.804-42 42-42zm56 254c0 6.627-5.373 12-12 12h-88c-6.627 0-12-5.373-12-12v-24c0-6.627 5.373-12 12-12h12v-64h-12c-6.627 0-12-5.373-12-12v-24c0-6.627 5.373-12 12-12h64c6.627 0 12 5.373 12 12v100h12c6.627 0 12 5.373 12 12v24z\"><\/path><\/svg>\t\t\t\t<\/span>\n\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t<div class=\"elementor-icon-box-content\">\n\n\t\t\t\t\t\t\t\t\t<h3 class=\"elementor-icon-box-title\">\n\t\t\t\t\t\t<span  >\n\t\t\t\t\t\t\tKraujo pa\u0117mimo mokestis 5,00 \u20ac \t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-699d240a elementor-align-center elementor-widget elementor-widget-button\" data-id=\"699d240a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/serveonline.lt\/cd3f8281-8a3c-4cda-9f55-0d38b44c062b\/company\" target=\"_blank\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">REGISTRACIJA INTERNETU<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-979a78e e-flex e-con-boxed e-con e-parent\" data-id=\"979a78e\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-107409cd elementor-widget elementor-widget-ideapark-heading\" data-id=\"107409cd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"ideapark-heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"c-ip-heading c-ip-heading--medium c-ip-heading--center c-ip-heading--bullet-hide\"><span class=\"c-ip-heading__inner\">TYRIMO APRA\u0160YMAS<\/span><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-58b5dee5 e-flex e-con-boxed e-con e-parent\" data-id=\"58b5dee5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4f9cb315 elementor-widget elementor-widget-text-editor\" data-id=\"4f9cb315\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Vitamin\u0105 A, priklausomai nuo jo chemin\u0117s strukt\u016bros, vadina retinoliu, retinaliu arba retinoidu.<\/p><p>Vitamino A yra gyv\u016bnin\u0117s kilm\u0117s maisto produktuose \u2013 \u017euv\u0173 taukuose, svieste, kiau\u0161inio trynyje, menk\u0117s kepen\u0117l\u0117se, jautienos kepenyse, piene, grietin\u0117l\u0117je, grietin\u0117je, fermentiniame s\u016bryje.<\/p><p>Beta karotino daugiausia morkose, moli\u016bguose, pomidoruose, kop\u016bstuose, \u0161pinatuose, brokoliuose ir kitose \u017ealiose dar\u017eov\u0117se, abrikosuose.<\/p><p>Kadangi vitaminas A pasisavinamas su riebalais, morkas ar j\u0173 sultis patartina vartoti su \u0161iek tiek aliejaus ar riebal\u0173.<\/p><p><strong>Oda<\/strong>. Vitaminas A b\u016btinas l\u0105stel\u0117ms augti ir daugintis. Jis u\u017etikrina normali\u0105 epitelini\u0173 audini\u0173 (oda ir gleivin\u0117) b\u016bkl\u0119. Tr\u016bkstant vitamino A, oda ir gleivin\u0117 saus\u0117ja, odoje atsiranda \u012ftr\u016bkim\u0173, labai suma\u017e\u0117ja atsparumas infekcijoms.<\/p><p><strong>Rega<\/strong>. \u012esisavintas vitaminas A ar karotinai audiniuose paver\u010diami retinoliu, kuris v\u0117liau ver\u010diamas retinaliu arba retinolio r\u016bg\u0161timi. Retinalis yra svarbus regos funkcijai, retinolio r\u016bg\u0161tis reikalinga tarpl\u0105steliniams retinolio r\u016bg\u0161ties receptoriams.<\/p><p>Vitaminas A yra naudojamas esant bet kokiam \u0161viesos dirgikliui rodopsino sintezei. Tai ypa\u010d svarbu \u017emon\u0117ms, kurie daug laiko praleid\u017eia prie televizori\u0173, kompiuteri\u0173 ekran\u0173 ir kuri\u0173 akys vos ne kiekvien\u0105 sekund\u0119 turi reaguoti \u012f kontrastinius \u0161viesos dirgiklius. To pasekm\u0117 \u2013 didelis vitamino A poreikis. Kadangi per daugel\u012f milijon\u0173 met\u0173 akis \u012fgijo gyvybi\u0161kai svarbaus jutimo organo reik\u0161m\u0119, joje i\u0161sivyst\u0117 ypa\u010d tankus kraujagysli\u0173 tinklas, kuris reikalingas tam, kad b\u016bt\u0173 tiekiamas vitaminas A. Kiekvieno \u0161viesos dirgiklio atveju vyksta cheminis rodopsino molekuli\u0173 skilimas. Tuo pa\u010diu metu, vykstant biosintezei, i\u0161 baltym\u0173 ir vitamino A sudaromos naujos rodopsino molekul\u0117s. Jeigu vitamino tr\u016bksta, nei\u0161vengiamai pradeda blog\u0117ti reg\u0117jimas. Be to, tr\u016bkstant vitamino A, pradeda d\u017ei\u016bti ir kiet\u0117ti akies ragenos l\u0105stel\u0117s, tod\u0117l mes prarandame ir apsaugin\u0119 a\u0161ar\u0173 pl\u0117vel\u0119. D\u0117l \u0161ios prie\u017easties u\u017eanka a\u0161ar\u0173 kanalai, i\u0161d\u017ei\u016bva konjunktyva (voko gleivin\u0117), tod\u0117l kyla pavojus, kad i\u0161sivystys konjunktyvitas.<\/p><p>Ir vitamino tr\u016bkumas, ir perdozavimas gali b\u016bti labai \u017ealingas ar netgi mirtinas. Tr\u016bkstant vitamino suprast\u0117ja rega tamsoje, i\u0161blyk\u0161ta ir saus\u0117ja oda. Vitamino A gali pritr\u016bkti d\u0117l nesveikos, nevisavert\u0117s mitybos arba sutrikus \u017earnyno \u012fsiurbimo (rezorbcijos) funkcijai.<\/p><p>Po\u017eymiai: vir\u0161kinimo sutrikimas, pykinimas, v\u0117mimas, regos sutrikimai, svaigulio priepuoliai, nekoordinuoti judesiai. Smarkiai perdozavus skauda s\u0105narius ir kaulus, padid\u0117ja kepenys. Skirtingai prisitaikiusiems gyv\u016bnams mirtina doz\u0117 skirtinga \u2013 kai kurie gyv\u016bnai (ypa\u010d prisitaik\u0119 prie poliarini\u0173 s\u0105lyg\u0173) kepenyse gali kaupti tokias vitamin\u0173 dozes, kurios \u017emogui yra mirtinos.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2fe9ebb1 e-con-full e-flex e-con e-child\" data-id=\"2fe9ebb1\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-98ccdb6 elementor-widget elementor-widget-ideapark-heading\" data-id=\"98ccdb6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"ideapark-heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"c-ip-heading c-ip-heading--small c-ip-heading--center c-ip-heading--bullet-hide\"><span class=\"c-ip-heading__inner\">REGISTRUOKIT\u0116S INTERNETU<\/span><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1f9fbf63 elementor-align-center elementor-widget elementor-widget-button\" data-id=\"1f9fbf63\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/serveonline.lt\/cd3f8281-8a3c-4cda-9f55-0d38b44c062b\/company\" target=\"_blank\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">REGISTRACIJA PER SERVE.LT<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-780d0173 e-flex e-con-boxed e-con e-parent\" data-id=\"780d0173\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2435aee6 elementor-widget elementor-widget-ideapark-heading\" data-id=\"2435aee6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"ideapark-heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"c-ip-heading c-ip-heading--small c-ip-heading--center c-ip-heading--bullet-hide\"><span class=\"c-ip-heading__inner\">SEKITE MUS instagram<\/span><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-55bb33db elementor-widget elementor-widget-ideapark-heading\" data-id=\"55bb33db\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"ideapark-heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"c-ip-heading c-ip-heading--medium c-ip-heading--center c-ip-heading--bullet-hide\"><span class=\"c-ip-heading__inner\"><a href=\"http:\/\/www.instagram.com\/miamedic.lt\" target=\"_blank\"> @miamedic.lt<\/a><\/span><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>LABORATORINIAI TYRIMAI Vitaminas A Prek\u0117s kodas: 18916 90,00 \u20ac Kraujo pa\u0117mimo mokestis 5,00 \u20ac REGISTRACIJA INTERNETU TYRIMO APRA\u0160YMAS Vitamin\u0105 A, priklausomai nuo&hellip;<\/p>","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"footnotes":""},"class_list":["post-11759","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/miamedic.lt\/en\/wp-json\/wp\/v2\/pages\/11759","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/miamedic.lt\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/miamedic.lt\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/miamedic.lt\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/miamedic.lt\/en\/wp-json\/wp\/v2\/comments?post=11759"}],"version-history":[{"count":4,"href":"https:\/\/miamedic.lt\/en\/wp-json\/wp\/v2\/pages\/11759\/revisions"}],"predecessor-version":[{"id":11763,"href":"https:\/\/miamedic.lt\/en\/wp-json\/wp\/v2\/pages\/11759\/revisions\/11763"}],"wp:attachment":[{"href":"https:\/\/miamedic.lt\/en\/wp-json\/wp\/v2\/media?parent=11759"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}