{"id":127551,"date":"2016-09-06T15:05:19","date_gmt":"2016-09-06T13:05:19","guid":{"rendered":"http:\/\/hudo.com\/si\/?p=127551"},"modified":"2016-09-06T15:05:19","modified_gmt":"2016-09-06T13:05:19","slug":"v-mozganskem-tkivu-odkrili-delce-onesnazenega-zraka","status":"publish","type":"post","link":"https:\/\/hudo.com\/si\/zdrav-duh-telo\/v-mozganskem-tkivu-odkrili-delce-onesnazenega-zraka\/","title":{"rendered":"Znanstveniki odkrili, da onesna\u017eeni zrak \u0161koduje na\u0161im mo\u017eganom"},"content":{"rendered":"<p>Raziskovalci sicer poudarjajo, da so potrebne nadaljnje \u0161tudije o morebitnem tveganju, ki ga za \u010dlove\u0161ko zdravje predstavljajo ti del\u010dki, ki bi lahko bili toksi\u010dni. So pa hkrati sporo\u010dili, da so jih ugotovitve, do katerih so pri\u0161li, \u0161okirale, odpirajo pa celo paleto novih vpra\u0161anj o tveganju onesna\u017eenega zraka za \u010dlove\u0161ko zdravje.<\/p>\n<p>Kot na spletni strani pi\u0161e britanski BBC, so se \u0161tevilne \u0161tudije doslej ukvarjale z vplivom onesna\u017eenega zraka na plju\u010da in srce, sedaj objavljena raziskava pa ponuja prve dokaze o tem, da lahko mikroskopski del\u010dki magnetita, to je oblike \u017eelezovega oksida, ki bi lahko bili posledica onesna\u017eenja, zaidejo v mo\u017egane.<\/p>\n<p>Ekipa znanstvenikov iz Velike Britanije, Mehike in ZDA je v raziskavi izvedla magnetne preizkuse na zamrznjenem mo\u017eganskem tkivu, ki so ga pridobili od 37 pokojnikov v starosti med tri do 92 let.<\/p>\n<p>Devetindvajset ljudi, katerih tkivo so uporabili, je \u017eivelo in umrlo v mehi\u0161ki prestolnici Ciudad de Mexico, ki slovi po izjemno umazanem zraku. Preostala tkiva so pripadala osmim ljudem iz Manchestra, ki so umrli z razli\u010dno napredovanimi nevrodegenerativnimi boleznimi.<\/p>\n<p>V raziskavi so znanstveniki v mo\u017eganskem tkivu odkrili nanondelce magnetita, ki so bili videti druga\u010de od tistih, ki jih \u010dlove\u0161ki mo\u017egani naravno proizvajajo sami.<\/p>\n<p>Pri teh del\u010dkih se je obenem pokazala o\u010ditna podobnost z del\u010dki, ki nastajajo pri izgorevanju goriva, kakr\u0161ne je mo\u010d najti v urbanem onesna\u017eenju ozra\u010dja &#8211; gre za izpu\u0161ne pline, dim iz tovarn in dim, ki nastaja pri kuhanju na notranjih ognji\u0161\u010dih, je sporo\u010dila ekipa znanstvenikov, povzema francoska tiskovna agencija AFP.<\/p>\n<p>&#8220;Prej\u0161nje raziskave so pokazale vzajemno povezavo med koli\u010dino magnetita v mo\u017eganih in Alzheimerjevo boleznijo,&#8221; so znanstveniki zapisali v ameri\u0161ki strokovni publikaciji Proceedings of the National Academy of Sciences.<\/p>\n<p>Kot so dodali, bi bilo sedaj treba preu\u010diti izpostavljenost tovrstnim nanodelcem magnetita v ozra\u010dju kot morebitnem tveganju za zdravje.<\/p>\n<p>Strokovnjaki, ki niso sodelovali pri raziskavi, so medtem ocenili, da ta ni podala dovolj trdnih dokazov, da so ti nanodelci v mo\u017egane za\u0161li iz onesna\u017eenega ozra\u010dja ali da imajo kak\u0161no vlogo pri nastanku Alzheimerjeve bolezni.<\/p>\n<p>Treba je izvesti bolj\u0161o \u0161tudijo, v kateri bi primerjali magnetit v mo\u017eganih obolelih z Alzheimerjevo boleznijo z obmo\u010dij z visoko in nizko onesna\u017eenostjo zraka, je komentirala Jennifer Pocock z londonskega univerzitetnega in\u0161tituta za nevrologijo.<\/p>\n<p>&#8220;Menim, da \u0161e ne morejo re\u010di, da povzro\u010dajo Alzheimerjevo bolezen,&#8221; je dodal Peter Dobson z londonskega kraljevega kolid\u017ea. A je hkrati poudaril, da ugotovitve spro\u017eajo splo\u0161nej\u0161o zaskrbljenost, saj se del\u010dke magnetita povezuje z drugimi zdravstvenimi te\u017eavami, kot so sr\u010dno-\u017eilne in plju\u010dne bolezni.<\/p>\n<p>Svetovna zdravstvena organizacija je v za\u010detku leta opozorila, da je onesna\u017een zrak krivec za do tri milijone prezgodnjih smrti letno.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>V \u010dlove\u0161kem mo\u017eganskem tkivu so odkrili mikroskopske del\u010dke, ki so verjetno tja za\u0161li iz onesna\u017eenega ozra\u010dja. Ti nanodelci bi lahko prispevali k nevrodegenerativnim boleznim, kot je Alzhemierjeva, ka\u017ee raziskava mednarodne ekipe znanstvenikov.<\/p>\n","protected":false},"author":8,"featured_media":127552,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1657,1701],"source":[4511],"supertag":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Znanstveniki odkrili, da onesna\u017eeni zrak \u0161koduje na\u0161im mo\u017eganom - Hudo Slovenija<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hudo.com\/si\/zdrav-duh-telo\/v-mozganskem-tkivu-odkrili-delce-onesnazenega-zraka\/\" \/>\n<meta property=\"og:locale\" content=\"sl_SI\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Znanstveniki odkrili, da onesna\u017eeni zrak \u0161koduje na\u0161im mo\u017eganom - Hudo Slovenija\" \/>\n<meta property=\"og:description\" content=\"V \u010dlove\u0161kem mo\u017eganskem tkivu so odkrili mikroskopske del\u010dke, ki so verjetno tja za\u0161li iz onesna\u017eenega ozra\u010dja. Ti nanodelci bi lahko prispevali k nevrodegenerativnim boleznim, kot je Alzhemierjeva, ka\u017ee raziskava mednarodne ekipe znanstvenikov.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/hudo.com\/si\/zdrav-duh-telo\/v-mozganskem-tkivu-odkrili-delce-onesnazenega-zraka\/\" \/>\n<meta property=\"og:site_name\" content=\"Hudo Slovenija\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/hudo.si\" \/>\n<meta property=\"article:published_time\" content=\"2016-09-06T13:05:19+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/hudo.com\/si\/wp-content\/uploads\/sites\/2\/2016\/09\/profimedia-0254061133.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1250\" \/>\n\t<meta property=\"og:image:height\" content=\"846\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"M. 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