{"id":5933,"date":"2022-04-08T07:03:00","date_gmt":"2022-04-08T05:03:00","guid":{"rendered":"https:\/\/prahaskolska-backup.200.solutions\/?p=5933"},"modified":"2022-04-06T21:42:26","modified_gmt":"2022-04-06T19:42:26","slug":"vedci-poprve-objevili-mikroplasty-v-lidskem-dychacim-traktu","status":"publish","type":"post","link":"https:\/\/prahaskolska-backup.200.solutions\/?p=5933","title":{"rendered":"V\u011bdci poprv\u00e9 objevili mikroplasty v lidsk\u00e9m d\u00fdchac\u00edm traktu"},"content":{"rendered":"\n<p><strong>V plicn\u00ed tk\u00e1ni 11 ze 13 operovan\u00fdch pacient\u016f bylo nalezeno celkem 39 \u010d\u00e1ste\u010dek mikroplast\u016f, nej\u010dast\u011bji se mezi nimi objevoval polypropylen, u\u017e\u00edvan\u00fd zejm\u00e9na v plastov\u00fdch obalech, a PET (polyethylen), ze kter\u00e9ho jsou vyr\u00e1b\u011bny plastov\u00e9 lahve.<\/strong><\/p>\n\n\n\n<p>V\u00fdzkumn\u00edci z University of Hull a Hull York Medical School na\u0161li nejv\u011bt\u0161\u00ed mno\u017estv\u00ed plast\u016f o pr\u016fm\u011bru men\u0161\u00edm ne\u017e 5 mm v nejhlub\u0161\u00ed \u010d\u00e1sti plic. To bylo d\u0159\u00edve pova\u017eov\u00e1no za nemo\u017en\u00e9, vzhledem k tomu, jak \u00fazk\u00e9 jsou d\u00fdchac\u00ed cesty. Mikroplasty byly ji\u017e d\u0159\u00edve nalezeny ve vzorc\u00edch z pitev lidsk\u00fdch mrtvol, ale tato studie je poprv\u00e9 prok\u00e1zala v plic\u00edch \u017eiv\u00fdch lid\u00ed. Tato studie m\u011bla za \u00fa\u010del d\u00e1le roz\u0161\u00ed\u0159it pov\u011bdom\u00ed o nebezpe\u010d\u00ed vdechov\u00e1n\u00ed mikro\u010d\u00e1stic a o jejich potenci\u00e1ln\u00edm negativn\u00edm dopadu na lidsk\u00e9 zdrav\u00ed.<\/p>\n\n\n\n<p>Laura Sadofsky, hlavn\u00ed autorka \u010dl\u00e1nku, uvedla: \u201eTyto \u00fadaje p\u0159edstavuj\u00ed v\u00fdznamn\u00fd pokrok v oblasti zne\u010di\u0161t\u011bn\u00ed ovzdu\u0161\u00ed, mikroplast\u016f a lidsk\u00e9ho zdrav\u00ed. Charakterizace typ\u016f a mno\u017estv\u00ed mikroplast\u016f, kter\u00e9 jsme objevili, m\u016f\u017ee nyn\u00ed slou\u017eit jako podklad pro re\u00e1ln\u00e9 podm\u00ednky laboratorn\u00edch expozi\u010dn\u00edch experiment\u016f s c\u00edlem ur\u010dit dopady na zdrav\u00ed.\"<\/p>\n\n\n\n<p>Ji\u017e dlouho je zn\u00e1m\u00e9, \u017ee mikroplasty maj\u00ed nezanedbateln\u00fd vliv na \u017eivot na na\u0161\u00ed planet\u011b, ne ka\u017ed\u00fd si je ov\u0161em v\u011bdom toho, do jak\u00e9 m\u00edry tomu tak je. V dne\u0161n\u00ed dob\u011b se tyto \u010d\u00e1ste\u010dky nach\u00e1zej\u00ed v nejhlub\u0161\u00edch \u010d\u00e1stech oce\u00e1nu, na vrcholku hory Mount Everest, ale dokonce i v placent\u00e1ch t\u011bhotn\u00fdch \u017een. Zat\u00edm nem\u00e1me dostate\u010dn\u00e9 informace pro ur\u010den\u00ed konkr\u00e9tn\u00edho nebezpe\u010d\u00ed, kter\u00e9 by v\u00fdskyt mikro\u010d\u00e1stic mohl zp\u016fsobovat, v\u011bdci se ov\u0161em shoduj\u00ed na tom, \u017ee je t\u0159eba s t\u00edm za\u010d\u00edt n\u011bco d\u011blat.<\/p>\n\n\n\n<p>Korelace s rakovinou plic se zdaj\u00ed b\u00fdt st\u00e1le v\u00edce v\u00fdznamn\u00e9. Americk\u00e1 studie proveden\u00e1 v roce 1998 u pacient\u016f s rakovinou plic zjistila ve v\u00edce ne\u017e 100 vzorc\u00edch p\u0159\u00edtomnost plastov\u00fdch a rostlinn\u00fdch vl\u00e1ken (nap\u0159. bavlny). V rakovinn\u00e9 tk\u00e1ni obsahovalo vl\u00e1kna 97 % vzork\u016f a v nen\u00e1dorov\u00fdch vzorc\u00edch bylo kontaminov\u00e1no 83 % vzork\u016f. Ned\u00e1vn\u00fd p\u0159ehledov\u00fd \u010dl\u00e1nek vyhodnotil riziko rakoviny a dosp\u011bl k z\u00e1v\u011bru: \u201eJe nal\u00e9hav\u011b zapot\u0159eb\u00ed podrobn\u011bj\u0161\u00edho v\u00fdzkumu toho, jak mikroplasty a nanoplasty ovliv\u0148uj\u00ed struktury a procesy v lidsk\u00e9m t\u011ble a zda a jak mohou transformovat bu\u0148ky a vyvolat karcinogenezi, zejm\u00e9na s ohledem na exponenci\u00e1ln\u00ed n\u00e1r\u016fst v\u00fdroby plast\u016f.\"<\/p>\n\n\n\n<p>Fotografie od u\u017eivatele\u00a0<strong><a href=\"https:\/\/www.pexels.com\/cs-cz\/@chokniti-khongchum-1197604?utm_content=attributionCopyText&amp;utm_medium=referral&amp;utm_source=pexels\">Chokniti Khongchum<\/a><\/strong>\u00a0ze slu\u017eby\u00a0<strong><a href=\"https:\/\/www.pexels.com\/cs-cz\/foto\/osoba-modra-sklenice-technologie-2280571\/?utm_content=attributionCopyText&amp;utm_medium=referral&amp;utm_source=pexels\">Pexels<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>V plicn\u00ed tk\u00e1ni 11 ze 13 operovan\u00fdch pacient\u016f bylo nalezeno celkem 39 \u010d\u00e1ste\u010dek mikroplast\u016f, nej\u010dast\u011bji se mezi nimi objevoval polypropylen, u\u017e\u00edvan\u00fd zejm\u00e9na v plastov\u00fdch obalech, a PET (polyethylen), ze kter\u00e9ho [&hellip;]<\/p>\n","protected":false},"author":25,"featured_media":5940,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[51,46,48],"tags":[8],"class_list":["post-5933","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-spolecnost","category-studentske-zpravodajstvi","category-technologie","tag-rodic-zak"],"acf":[],"gutentor_comment":0,"_links":{"self":[{"href":"https:\/\/prahaskolska-backup.200.solutions\/index.php?rest_route=\/wp\/v2\/posts\/5933","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prahaskolska-backup.200.solutions\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prahaskolska-backup.200.solutions\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prahaskolska-backup.200.solutions\/index.php?rest_route=\/wp\/v2\/users\/25"}],"replies":[{"embeddable":true,"href":"https:\/\/prahaskolska-backup.200.solutions\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5933"}],"version-history":[{"count":3,"href":"https:\/\/prahaskolska-backup.200.solutions\/index.php?rest_route=\/wp\/v2\/posts\/5933\/revisions"}],"predecessor-version":[{"id":5941,"href":"https:\/\/prahaskolska-backup.200.solutions\/index.php?rest_route=\/wp\/v2\/posts\/5933\/revisions\/5941"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/prahaskolska-backup.200.solutions\/index.php?rest_route=\/wp\/v2\/media\/5940"}],"wp:attachment":[{"href":"https:\/\/prahaskolska-backup.200.solutions\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5933"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prahaskolska-backup.200.solutions\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5933"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prahaskolska-backup.200.solutions\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5933"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}