{"id":92259,"date":"2020-08-18T12:03:42","date_gmt":"2020-08-18T09:03:42","guid":{"rendered":"http:\/\/www.btv.md\/?p=92259"},"modified":"2020-08-18T12:03:42","modified_gmt":"2020-08-18T09:03:42","slug":"microparticule-de-plastic-au-fost-gasite-de-cercetatori-in-toate-tesuturile-umane-studiate","status":"publish","type":"post","link":"https:\/\/www.btv.md\/ro\/microparticule-de-plastic-au-fost-gasite-de-cercetatori-in-toate-tesuturile-umane-studiate\/","title":{"rendered":"Microparticule de plastic au fost g\u0103site de cercet\u0103tori \u00een toate \u0163esuturile umane studiate"},"content":{"rendered":"<p><strong>O nou\u0103 metod\u0103 ar putea ajuta la detectarea de microparticule de plastic \u00een \u0163esuturile \u015fi organele umane, permi\u0163\u00e2nd oamenilor de \u015ftiin\u0163\u0103 s\u0103 studieze impactul pe care poluarea plastic\u0103 a mediului \u00eel are asupra s\u0103n\u0103t\u0103\u0163ii noastre, informeaz\u0103 luni New Scientist \u015fi Science Focus.<\/strong><\/p>\n<p>Rolf Halden de la Universitatea de Stat din Arizona \u015fi colegii s\u0103i au identificat, anul trecut, molecule de materiale plastice utilizate \u00een mod frecvent, cum ar fi bisfenol A (BPA), \u00een e\u015fantioane de ficat uman \u015fi \u0163esut gras. Ulterior, ei au aprofundat aceste studii \u00eencerc\u00e2nd s\u0103 afle dac\u0103 \u015fi particule mai mari de microplastic ar putea fi detectate, \u00een cazul \u00een care acestea p\u0103trund \u00een \u0163esuturile umane.<\/p>\n<p>Cercet\u0103torii au studiat 47 de e\u015fantioane de \u0163esut uman din pl\u0103m\u00e2ni, ficat, splin\u0103 \u015fi rinichi, existente \u00eentr-o baz\u0103 de \u0163esuturi utilizat\u0103 pentru studierea bolilor neurodegenerative, precum Alzheimer, pe care le-au analizat pentru a afla dac\u0103 pot fi detectate \u015fi cuantificate fragmente de microplastic prezente \u00een e\u015fantioane folosind metode spectroscopice cunoscute.<\/p>\n<p>Oamenii de \u015ftiin\u0163\u0103 au descoperit c\u0103 a fost posibil s\u0103 identifice zeci de tipuri de componente din plastic, inclusiv policarbonat, tereftalat de polietilen\u0103 (PET) \u015fi polietilen\u0103, pe l\u00e2ng\u0103 bisfenol A.<\/p>\n<p>&#8221;Suntem literalmente \u00eenconjura\u0163i de plastic \u00een via\u0163a noastr\u0103 de zi cu zi. Ne afl\u0103m \u00een prezent \u00een pozi\u0163ia \u00een care putem defini mai bine poluarea cu plastic \u00een corpul uman&#8221;, a declarat Halden. &#8221;Dac\u0103, unde \u015fi \u00een ce m\u0103sur\u0103 se acumuleaz\u0103 fragmente de plastic \u00een diferite \u0163esuturi \u015fi organe umane se afl\u0103 \u00een centrul cercet\u0103rilor \u00een curs de desf\u0103\u015furare&#8221;, a precizat specialistul.<\/p>\n<p>&#8221;Materiale plastice care contamineaz\u0103 mediul pot fi g\u0103site \u00een fiecare zon\u0103 de pe glob, iar \u00een c\u00e2teva decenii scurte am trecut de la a considera plasticul un beneficiu minunat la a-l considera o amenin\u0163are&#8221;, a declarat unul dintre coautorii studiului, Charles Rolsky. &#8221;Exist\u0103 dovezi c\u0103 plasticul \u00ee\u015fi croie\u015fte calea \u00een corpurile noastre, dar foarte pu\u0163ine studii au analizat ce se \u00eent\u00e2mpl\u0103 acolo. \u015ei, la acest moment, nu \u015ftim dac\u0103 acest plastic este doar o pacoste sau dac\u0103 reprezint\u0103 un pericol la adresa s\u0103n\u0103t\u0103\u0163ii umane, a ad\u0103ugat cercet\u0103torul.<\/p>\n<p>Halden \u015fi colegii s\u0103i au dezvoltat, de asemenea, un instrument online pentru a permite cercet\u0103torilor s\u0103 \u00ee\u015fi standardizeze m\u0103sur\u0103torile microplasticului \u00een \u0163esuturile umane, prin convertirea informa\u0163iilor despre num\u0103rul de particule de plastic \u00een unit\u0103\u0163i de mas\u0103 \u015fi suprafa\u0163\u0103.<\/p>\n<p>Aceste cercet\u0103ri au fost prezentate luni \u00een cadrul congresului American Chemical Society, desf\u0103\u015furat virtual.<\/p>\n<p>&#8221;\u00cen prezent, nu exist\u0103 o metod\u0103 analitic\u0103 ideal\u0103 pentru cuantificarea particulelor de microplastic din \u0163esuturile umane&#8221;, a spus Dick Vethaak de la centrul de cercetare Deltares din Olanda.<\/p>\n<p>Potrivit lui Vethaak, \u00een cazul \u00een care noua metod\u0103 ar putea fi utilizat\u0103 pentru analizarea \u0163esuturilor umane pentru detectarea posibilelor microparticule de plastic, va fi esen\u0163ial s\u0103 se poat\u0103 oferi asigur\u0103ri c\u0103 e\u015fantioanele nu risc\u0103 s\u0103 se contamineze, spre exemplu cu particule microscopice de plastic din aer.<\/p>\n<p>Stephanie Wright de la Imperial College London a atras aten\u0163ia la r\u00e2ndul s\u0103u c\u0103 exist\u0103 dovezi din studiile efectuate pe animale c\u0103 microparticulele de plastic pot d\u0103una organismului. \u00cens\u0103 nu este deocamdat\u0103 clar dac\u0103 aceste microparticule pot p\u0103trunde \u00een organele umane. &#8221;Marea \u00eentrebare&#8221; pentru cercet\u0103rile viitoare este, \u00een opinia lui Wright, dac\u0103 microparticulele de plastic au vreun impact asupra s\u0103n\u0103t\u0103\u0163ii umane.<\/p>\n<p>Sursa: <a href=\"https:\/\/www.agerpres.ro\/stiintatehnica\/2020\/08\/17\/microparticule-de-plastic-au-fost-gasite-de-cercetatori-in-toate-tesuturile-umane-studiate--557465?fbclid=IwAR25KMsy5XWoJ06nb2pALSik86Y-RJ_aWWhg7l_CtQM3MZVWYlB-FDx1YLE\">agerpres.ro<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>O nou\u0103 metod\u0103 ar putea ajuta la detectarea de microparticule de plastic \u00een \u0163esuturile \u015fi organele umane, permi\u0163\u00e2nd oamenilor de \u015ftiin\u0163\u0103 s\u0103 studieze impactul pe care poluarea plastic\u0103 a mediului \u00eel are asupra s\u0103n\u0103t\u0103\u0163ii noastre, informeaz\u0103 luni New Scientist \u015fi Science Focus. Rolf Halden de la Universitatea de Stat din Arizona \u015fi colegii s\u0103i au [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":92260,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6349,6377],"tags":[12050,17001,17002],"class_list":["post-92259","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-social","category-stiri","tag-cercetatori","tag-microparticule-de-plastic","tag-tesuturile-umane"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Microparticule de plastic au fost g\u0103site de cercet\u0103tori \u00een toate \u0163esuturile umane studiate - BTV<\/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:\/\/www.btv.md\/ro\/microparticule-de-plastic-au-fost-gasite-de-cercetatori-in-toate-tesuturile-umane-studiate\/\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Microparticule de plastic au fost g\u0103site de cercet\u0103tori \u00een toate \u0163esuturile umane studiate - BTV\" \/>\n<meta property=\"og:description\" content=\"O nou\u0103 metod\u0103 ar putea ajuta la detectarea de microparticule de plastic \u00een \u0163esuturile \u015fi organele umane, permi\u0163\u00e2nd oamenilor de \u015ftiin\u0163\u0103 s\u0103 studieze impactul pe care poluarea plastic\u0103 a mediului \u00eel are asupra s\u0103n\u0103t\u0103\u0163ii noastre, informeaz\u0103 luni New Scientist \u015fi Science Focus. 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