{"id":682442,"date":"2026-03-17T21:07:03","date_gmt":"2026-03-17T21:07:03","guid":{"rendered":"https:\/\/microscopemedia.com\/?p=682442"},"modified":"2026-03-17T21:07:03","modified_gmt":"2026-03-17T21:07:03","slug":"un-test-de-respiratie-dezvoltat-la-mit-ar-putea-depista-pneumonia-in-cateva-minute-fara-radiografii","status":"publish","type":"post","link":"https:\/\/microscopemedia.com\/?p=682442","title":{"rendered":"Un test de respira\u021bie dezvoltat la MIT ar putea depista pneumonia \u00een c\u00e2teva minute, f\u0103r\u0103 radiografii"},"content":{"rendered":"
<\/div>\n

Tehnologia, denumit\u0103 \u201ePlasmoSniff\u201d, utilizeaz\u0103 un senzor portabil capabil s\u0103 detecteze biomarkeri ai bolii \u00een aerul expirat de pacient. Cercet\u0103torii afirm\u0103 c\u0103 sistemul ar putea fi folosit direct \u00een cabinete medicale sau chiar la domiciliu.<\/p>\n

Studiul care descrie noul dispozitiv a fost publicat \u00een revista Nano Letters.<\/p>\n

Cum func\u021bioneaz\u0103 testul<\/h2>\n

Metoda presupune ca pacientul s\u0103 inhaleze nanoparticule special concepute, \u00eentr-un mod similar utiliz\u0103rii unui inhalator pentru astm. Aceste particule transport\u0103 biomarkeri sintetici \u2013 mici \u201eetichete\u201d chimice care reac\u021bioneaz\u0103 \u00een prezen\u021ba infec\u021biilor pulmonare.<\/p>\n

Dac\u0103 pl\u0103m\u00e2nii sunt s\u0103n\u0103to\u0219i, nanoparticulele sunt eliminate intacte. \u00cen cazul prezen\u021bei pneumoniei, enzimele produse de infec\u021bie separ\u0103 biomarkerii de particule. Ace\u0219tia sunt apoi elimina\u021bi prin respira\u021bie \u0219i pot fi detecta\u021bi de senzor.<\/p>\n

\u201e\u00cen practic\u0103, un pacient ar inhala nanoparticulele \u0219i, \u00een aproximativ 10 minute, ar expira un biomarker care indic\u0103 starea pl\u0103m\u00e2nilor. Tehnologia PlasmoSniff poate identifica ace\u0219ti biomarkeri \u00een c\u00e2teva minute, direct la punctul de \u00eengrijire\u201d, a declarat Aditya Garg, cercet\u0103tor postdoctoral.<\/p>\n

Detectarea unor semnale extrem de slabe<\/h2>\n

Senzorul este construit folosind plasmonica \u2013 un domeniu care studiaz\u0103 interac\u021biunea luminii cu materia la scar\u0103 nanometric\u0103. Dispozitivul con\u021bine o pelicul\u0103 sub\u021bire de aur \u0219i nanoparticule de aur, separate de un spa\u021biu de doar cinci nanometri, unde sunt capturate moleculele \u021bint\u0103.<\/p>\n

Moleculele de ap\u0103 de pe suprafa\u021ba senzorului ajut\u0103 la \u201eprinderea\u201d biomarkerilor, iar ulterior ace\u0219tia sunt analiza\u021bi prin spectroscopie Raman, o tehnic\u0103 ce identific\u0103 moleculele dup\u0103 \u201eamprenta\u201d lor vibra\u021bional\u0103.<\/p>\n

\u201eEste o problem\u0103 de tip \u2018acul \u00een carul cu f\u00e2n\u2019. Metoda noastr\u0103 reu\u0219e\u0219te s\u0103 detecteze molecule care altfel ar fi ascunse printre mii de altele\u201d, a explicat Loza Tadesse, coordonatoarea cercet\u0103rii.<\/p>\n

Rezultate promi\u021b\u0103toare \u0219i aplica\u021bii extinse<\/h2>\n

Tehnologia a fost testat\u0103 pe probe de lichid pulmonar provenite de la \u0219oareci, \u00een care au fost introdu\u0219i biomarkeri ai pneumoniei. Senzorul a reu\u0219it s\u0103 detecteze aceste semnale la concentra\u021bii extrem de reduse, similare celor \u00eent\u00e2lnite \u00een infec\u021biile reale.<\/p>\n

Cercet\u0103torii lucreaz\u0103 \u00een prezent la integrarea sistemului \u00eentr-un dispozitiv portabil, care ar putea include o masc\u0103 pentru colectarea respira\u021biei \u0219i un detector compact.<\/p>\n

Pe l\u00e2ng\u0103 pneumonia, tehnologia ar putea fi adaptat\u0103 pentru depistarea altor boli, inclusiv anumite tipuri de cancer sau infec\u021bii virale, dar \u0219i pentru monitorizarea poluan\u021bilor din aer.<\/p>\n

\u201eNu este limitat\u0103 doar la diagnostic medical. Dac\u0103 o molecul\u0103 are o amprent\u0103 vibra\u021bional\u0103 cunoscut\u0103 \u0219i poate interac\u021biona cu apa, platforma noastr\u0103 o poate detecta\u201d, a ad\u0103ugat Tadesse.<\/p>\n

Dac\u0103 va fi implementat\u0103 pe scar\u0103 larg\u0103, tehnologia PlasmoSniff ar putea face diagnosticul bolilor pulmonare mai rapid, mai accesibil \u0219i mai eficient la nivel global.<\/p>\n","protected":false},"excerpt":{"rendered":"

Tehnologia, denumit\u0103 \u201ePlasmoSniff\u201d, utilizeaz\u0103 un senzor portabil capabil s\u0103 detecteze biomarkeri ai bolii \u00een aerul expirat de pacient. Cercet\u0103torii afirm\u0103 c\u0103 sistemul ar putea fi folosit direct \u00een cabinete medicale … Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":682443,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"Default","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts\/682442"}],"collection":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=682442"}],"version-history":[{"count":0,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts\/682442\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/media\/682443"}],"wp:attachment":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=682442"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=682442"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=682442"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}