{"id":63794,"date":"2024-08-02T01:45:57","date_gmt":"2024-08-02T08:45:57","guid":{"rendered":"https:\/\/www.chronobiology.com\/nove-3d-mapy-s-vysokym-rozlisenim-ukazuju-ako-sa-mozgove-cievy-menia-s-vekom\/"},"modified":"2024-09-04T03:01:41","modified_gmt":"2024-09-04T10:01:41","slug":"nove-3d-mapy-s-vysokym-rozlisenim-ukazuju-ako-sa-mozgove-cievy-menia-s-vekom","status":"publish","type":"post","link":"https:\/\/dev.chronobiology.com\/sk\/nove-3d-mapy-s-vysokym-rozlisenim-ukazuju-ako-sa-mozgove-cievy-menia-s-vekom\/","title":{"rendered":"Nov\u00e9 3D mapy s vysok\u00fdm rozl\u00ed\u0161en\u00edm ukazuj\u00fa, ako sa mozgov\u00e9 cievy menia s vekom"},"content":{"rendered":"<p>Zdrav\u00e9 cievy nie s\u00fa d\u00f4le\u017eit\u00e9 len pre zdravie srdca.<br \/>\nPod\u013ea novej \u0161t\u00fadie vedenej v\u00fdskumn\u00edkmi z Pennsylv\u00e1nskej univerzity je dobr\u00e1 kond\u00edcia ciev rozhoduj\u00faca pre zdravie mozgu a potenci\u00e1lne aj pre boj proti zhor\u0161ovaniu kognit\u00edvnych funkci\u00ed s\u00favisiacich s vekom a <a href=\"https:\/\/www.chronobiology.com\/generation-of-new-neurons-in-the-brain-as-a-strategy-against-neurodegenerative-diseases\/\" target=\"_blank\" rel=\"noopener\">neurodegenerat\u00edvnym ochoreniam,<\/a> ako je Alzheimerova choroba.<br \/>\nZistenia poukazuj\u00fa na doteraz nedostato\u010dne presk\u00faman\u00fa, ale potenci\u00e1lne k\u013e\u00fa\u010dov\u00fa \u00falohu, ktor\u00fa zohr\u00e1va cievna sie\u0165 mozgu &#8211; alebo energetick\u00e1 infra\u0161trukt\u00fara &#8211; pri vzniku neurodegenerat\u00edvnych ochoren\u00ed.<br \/>\nSvoju pr\u00e1cu publikovali v \u010dasopise <a href=\"https:\/\/www.nature.com\/articles\/s41467-024-50559-8\" target=\"_blank\" rel=\"noopener\"><em>Nature Communications<\/em><\/a>.<br \/>\nPomocou pokro\u010dil\u00fdch zobrazovac\u00edch techn\u00edk t\u00edm vytvoril mapy mozgov my\u0161\u00ed, ktor\u00e9 zn\u00e1zor\u0148uj\u00fa, ako sa cievne bunky a \u0161trukt\u00fary, ako napr\u00edklad cievy, menia s vekom, a identifikoval oblasti, ktor\u00e9 s\u00fa n\u00e1chyln\u00e9 na zhor\u0161enie stavu.<br \/>\nKe\u010f sa cievy zhor\u0161uj\u00fa, nervov\u00e9 bunky v mozgu, zn\u00e1me ako neur\u00f3ny, nemaj\u00fa dostatok energie, tak\u017ee u\u017e nefunguj\u00fa spr\u00e1vne alebo odumieraj\u00fa.<br \/>\nTo m\u00f4\u017ee vies\u0165 k stavu zn\u00e1memu ako vaskul\u00e1rna <a href=\"https:\/\/www.chronobiology.com\/sleeping-more-than-eight-hours-early-bedtime-linked-to-dementia\/\" target=\"_blank\" rel=\"noopener\">demencia<\/a>, ktor\u00e1 je druhou naj\u010dastej\u0161ou pr\u00ed\u010dinou zhor\u0161enia kognit\u00edvnych funkci\u00ed u star\u0161\u00edch dospel\u00fdch, a k pr\u00edznakom, ako s\u00fa poruchy sp\u00e1nku.        <\/p>\n<h2>Podrobn\u00e1 mapa cievnej siete v mozgu pom\u00e1ha identifikova\u0165 oblasti, ktor\u00e9 v starobe selekt\u00edvne degeneruj\u00fa<\/h2>\n<p>  &#8222;Pri ochoreniach, ako je <a href=\"https:\/\/www.chronobiology.com\/light-therapy-protects-the-brain-against-toxic-buildup-that-leads-to-alzheimers\/\" target=\"_blank\" rel=\"noopener\">Alzheimerova choroba<\/a>, u\u017e do\u0161lo k odumieraniu buniek v \u010dase, ke\u010f s\u00fa na magnetickej rezonancii vidite\u013en\u00e9 cievne zmeny a v\u00fdrazn\u00e9 zmen\u0161enie mozgu.<br \/>\nMus\u00edme pochopi\u0165, ako sa tieto bunky a \u0161trukt\u00fary menia predt\u00fdm, ako d\u00f4jde k ve\u013ekej katastrofe,&#8220; povedal Yongsoo Kim, docent neur\u00e1lnych a behavior\u00e1lnych vied na Penn State College of Medicine a hlavn\u00fd autor \u0161t\u00fadie.<br \/>\nT\u00e1to \u0161t\u00fadia poskytuje v\u010dasn\u00e9 pr\u00edznaky neurodegenerat\u00edvnych por\u00fach, ktor\u00e9 by mohli vies\u0165 k v\u010dasnej\u0161ej diagnostike a k inform\u00e1ci\u00e1m o tom, ako spomali\u0165 <a href=\"https:\/\/www.chronobiology.com\/understanding-how-aging-of-eyes-disrupts-circadian-rhythm\/\" target=\"_blank\" rel=\"noopener\">proces starnutia<\/a> a kognit\u00edvne zmeny.<br \/>\nPod\u013ea Kima je starnutie jedn\u00fdm z najd\u00f4le\u017eitej\u0161\u00edch faktorov, ktor\u00e9 sa podie\u013eaj\u00fa na neurodegenerat\u00edvnych poruch\u00e1ch.<br \/>\nVedci v\u0161ak presne nevedia, ako norm\u00e1lne starnutie men\u00ed mozog a najm\u00e4 mozgov\u00e9 cievy.    <a href=\"https:\/\/www.chronobiology.com\/wp-content\/uploads\/2024\/08\/mol.jpg\"><img decoding=\"async\" class=\"alignright wp-image-63304 size-medium\" title=\"Lek\u00e1r a pacient, trpiaci Alzheimerovou chorobou\" src=\"https:\/\/www.chronobiology.com\/wp-content\/uploads\/2024\/08\/mol-300x200.jpg\" alt=\"Lek\u00e1r a pacient, trpiaci Alzheimerovou chorobou\" width=\"300\" height=\"200\" srcset=\"https:\/\/dev.chronobiology.com\/wp-content\/uploads\/2024\/08\/mol-300x200.jpg 300w, https:\/\/dev.chronobiology.com\/wp-content\/uploads\/2024\/08\/mol-768x513.jpg 768w, https:\/\/dev.chronobiology.com\/wp-content\/uploads\/2024\/08\/mol.jpg 1000w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>  Vzh\u013eadom na starnutie popul\u00e1cie je ve\u013emi d\u00f4le\u017eit\u00e9 pochopi\u0165 tieto zmeny, najm\u00e4 v r\u00e1mci siete ciev.<br \/>\nKrvn\u00e9 cievy, konkr\u00e9tne mikrovaskul\u00e1rne cievy, reguluj\u00fa pr\u00edsun kysl\u00edka a energie, ako aj odstra\u0148ovanie odpadov\u00fdch produktov do a z neur\u00f3nov.<br \/>\nNapriek ich d\u00f4le\u017eitosti sa pod\u013ea Kima v\u00e4\u010d\u0161ina v\u00fdskumu zameriava sk\u00f4r na to, ako \u0161trukt\u00fara a funkcia neur\u00f3nov \u010dasom degeneruje, ne\u017e na cievy.<br \/>\nKe\u010f sa v\u00fdskumn\u00edci zaoberaj\u00fa mozgov\u00fdmi cievami, sk\u00famaj\u00fa predov\u0161etk\u00fdm v\u00e4\u010d\u0161ie cievy alebo sa zameriavaj\u00fa na jednu \u013eahko pr\u00edstupn\u00fa oblas\u0165 mozgu, somatosenzorick\u00fa k\u00f4ru.<br \/>\nD\u00f4le\u017eitej\u0161ie je, \u017ee typick\u00e9 zobrazovacie techniky, ako napr\u00edklad magnetick\u00e1 rezonancia, nemaj\u00fa dostato\u010dne vysok\u00e9 rozl\u00ed\u0161enie na to, aby videli, \u010do sa deje v mal\u00fdch cievach, ktor\u00e9 pod\u013ea odborn\u00edkov tvoria 80 a\u017e 85 % cievneho syst\u00e9mu mozgu.<br \/>\nKim a jeho v\u00fdskumn\u00fd t\u00edm vytvorili podrobn\u00fa mapu cievnej siete cel\u00e9ho my\u0161ieho mozgu pomocou dvoch techn\u00edk 3D mapovania s vysok\u00fdm rozl\u00ed\u0161en\u00edm: s\u00e9riovej dvojfot\u00f3novej tomografie &#8211; techniky, ktor\u00e1 vytv\u00e1ra s\u00e9riu na seba naskladan\u00fdch 2D obr\u00e1zkov &#8211; a fluorescen\u010dnej mikroskopie so sveteln\u00fdm listom, ktor\u00e1 zobrazuje neporu\u0161en\u00e9 3D vzorky na vizualiz\u00e1ciu cel\u00e9ho mozgu s rozl\u00ed\u0161en\u00edm jednej bunky.<br \/>\nVedci sk\u00famali mozgy mlad\u00fdch a star\u00fdch my\u0161\u00ed, aby zmapovali zmeny v mozgovom rie\u010disku po\u010das norm\u00e1lneho procesu starnutia.<br \/>\nKe\u010f\u017ee vykon\u00e1vaj\u00fa mapovanie s vysok\u00fdm rozl\u00ed\u0161en\u00edm a dostato\u010dn\u00fdm rozl\u00ed\u0161en\u00edm, vedci m\u00f4\u017eu rekon\u0161truova\u0165 cel\u00fa cievnu \u0161trukt\u00faru a skenova\u0165 cel\u00fd mozog, aby identifikovali tie oblasti, ktor\u00e9 vekom selekt\u00edvne degeneruj\u00fa.<br \/>\nOdborn\u00edci zistili, \u017ee oblas\u0165, ktor\u00fa sk\u00fama v\u00e4\u010d\u0161ina \u013eud\u00ed, vykazuje najmen\u0161ie zmeny, zatia\u013e \u010do hlbok\u00e9 zmeny prebiehaj\u00fa v oblastiach hlboko v mozgu.<br \/>\nSn\u00edmky uk\u00e1zali, \u017ee zmeny v cievnej sieti nie s\u00fa v\u0161ade v mozgu rovnako v\u00fdrazn\u00e9.<br \/>\nSk\u00f4r sa s\u00fastredili v baz\u00e1lnom prednom mozgu, hlbok\u00fdch kortik\u00e1lnych vrstv\u00e1ch a hipokamp\u00e1lnej sieti, \u010do nazna\u010duje, \u017ee tieto oblasti s\u00fa n\u00e1chylnej\u0161ie na cievnu degener\u00e1ciu.<br \/>\nTieto oblasti zohr\u00e1vaj\u00fa okrem in\u00e9ho \u00falohu pri pozornosti, sp\u00e1nku, <a href=\"https:\/\/www.chronobiology.com\/sleep-apnea-can-impair-memory\/\" target=\"_blank\" rel=\"noopener\">spracovan\u00ed<\/a> a ukladan\u00ed <a href=\"https:\/\/www.chronobiology.com\/sleep-apnea-can-impair-memory\/\" target=\"_blank\" rel=\"noopener\">pam\u00e4ti<\/a>.             <\/p>\n<h2>N\u00e1dej na bud\u00facu lie\u010dbu neurodegenerat\u00edvnych por\u00fach<\/h2>\n<p>  S prib\u00fadaj\u00facim vekom mozgu sa d\u013a\u017eka ciev a hustota vetvenia zni\u017euje pribli\u017ene o 10 %, \u010do nazna\u010duje, \u017ee sie\u0165 krvn\u00fdch rozvodov je red\u0161ia.<br \/>\nOkrem toho s\u00fa tepny v star\u0161om mozgu viac zakriven\u00e9 v porovnan\u00ed s tepnami v mlad\u0161om mozgu, \u010do m\u00f4\u017ee br\u00e1ni\u0165 prietoku krvi, najm\u00e4 v oblastiach vzdialenej\u0161\u00edch od hlavn\u00fdch tepien, ako s\u00fa hlbok\u00e9 kortik\u00e1lne vrstvy.<br \/>\nT\u00edm sa zaoberal aj funk\u010dn\u00fdmi zmenami ciev a zistil, \u017ee syst\u00e9m reaguje pomal\u0161ie v star\u0161\u00edch mozgoch.<br \/>\nTo znamen\u00e1, \u017ee nedok\u00e1\u017ee z\u00e1sobova\u0165 neur\u00f3ny energiou tak r\u00fdchlo a \u013eahko, ako to bunky potrebuj\u00fa.<br \/>\nDoch\u00e1dza tie\u017e k \u00fabytku pericytov, typu buniek, ktor\u00e9 reguluj\u00fa z\u00e1sobovanie krvou a priepustnos\u0165 ciev.<br \/>\nV d\u00f4sledku toho sa cievy st\u00e1vaj\u00fa &#8222;derav\u00fdmi&#8220;, \u010do ohrozuje <a href=\"https:\/\/www.chronobiology.com\/discovery-that-circadian-rhythm-regulates-blood-brain-barrier-may-lead-to-improved-treatment-options\/\" target=\"_blank\" rel=\"noopener\">hematoencefalick\u00fa bari\u00e9ru<\/a>.<br \/>\nT\u00e1to \u0161t\u00fadia nadv\u00e4zuje na predch\u00e1dzaj\u00faci v\u00fdskum skupiny, v ktorom mapovali cievnu s\u00fastavu mlad\u00e9ho my\u0161ieho mozgu.<br \/>\n\u010ealej bud\u00fa sk\u00fama\u0165, ako zmeny v mozgu sp\u00f4soben\u00e9 Alzheimerovou chorobou ovplyv\u0148uj\u00fa zdravie ciev a funkciu neur\u00f3nov.<br \/>\nV kone\u010dnom d\u00f4sledku d\u00fafaj\u00fa, \u017ee ich pr\u00e1ca povedie k lie\u010dbe neurodegenerat\u00edvnych por\u00fach.        <\/p>\n","protected":false},"excerpt":{"rendered":"<p>Zdrav\u00e9 cievy nie s\u00fa d\u00f4le\u017eit\u00e9 len pre zdravie srdca. Pod\u013ea novej \u0161t\u00fadie vedenej v\u00fdskumn\u00edkmi z Pennsylv\u00e1nskej univerzity je dobr\u00e1 kond\u00edcia ciev rozhoduj\u00faca pre zdravie mozgu a potenci\u00e1lne aj pre boj proti zhor\u0161ovaniu kognit\u00edvnych funkci\u00ed s\u00favisiacich s vekom a neurodegenerat\u00edvnym ochoreniam, ako je Alzheimerova choroba. Zistenia poukazuj\u00fa na doteraz nedostato\u010dne presk\u00faman\u00fa, ale potenci\u00e1lne k\u013e\u00fa\u010dov\u00fa \u00falohu, ktor\u00fa [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":63335,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[515,525],"tags":[],"class_list":{"0":"post-63794","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-dusevne-zdravie","8":"category-starnutie","9":"entry"},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.4 (Yoast SEO v23.4) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Nov\u00e9 3D mapy s vysok\u00fdm rozl\u00ed\u0161en\u00edm ukazuj\u00fa, ako sa mozgov\u00e9 cievy menia s vekom &#8211; Chronobiology.com<\/title>\n<meta name=\"description\" content=\"Zdrav\u00e9 cievy nie s\u00fa d\u00f4le\u017eit\u00e9 len pre zdravie srdca. 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