{"id":32522,"date":"2019-10-31T21:47:31","date_gmt":"2019-10-31T18:47:31","guid":{"rendered":"https:\/\/prohoster.info\/blog\/metod-2d-ukladki-delaet-vozmozhnost-pechatat-zhivye-organy-na-shag-blizhe\/"},"modified":"2019-10-31T21:47:31","modified_gmt":"2019-10-31T18:47:31","slug":"metod-2d-ukladki-delaet-vozmozhnost-pechatat-zhivye-organy-na-shag-blizhe","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/metod-2d-ukladki-delaet-vozmozhnost-pechatat-zhivye-organy-na-shag-blizhe","title":{"rendered":"Il metodo di impilamento 2D avvicina la stampa di organi viventi","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Cercando di rendere la produzione di biomateriali pi\u00f9 accessibile, i ricercatori dell'Universit\u00e0 della California a Berkeley combinano la bioprinting 2D, un braccio robotico per l'assemblaggio 3D e il congelamento istantaneo in un metodo che potrebbe un giorno consentire di stampare tessuti viventi e persino organi interi. Stampando gli organi sotto forma di sottili fogli di tessuto, per poi congelarli e impilarli uno sopra l'altro, la nuova tecnologia migliora la sopravvivenza delle bio cellule sia durante la stampa che durante la successiva conservazione.<\/p>\n

\"Il<\/p>\n

I biomateriali hanno un enorme potenziale per la medicina del futuro. La stampa 3D utilizzando le cellule staminali del paziente stesso aiuter\u00e0 a creare organi per i trapianti, che saranno completamente compatibili e non causeranno rigetti.<\/p>\n

Il problema \u00e8 che le attuali metodologie di bioprinting sono lente e non si scalano molto bene, poich\u00e9 le cellule faticano a sopravvivere al processo di stampa senza un rigoroso controllo della temperatura e dell'ambiente chimico. Inoltre, la conservazione e il trasporto delle tessuti stampati presentano ulteriori complessit\u00e0.<\/p>\n

<\/center><\/p>\n

Per affrontare queste sfide, il team di Berkeley ha deciso di parallelizzare il processo di stampa e suddividerlo in fasi sequenziali. In altre parole, invece di stampare l'intero organo in una sola volta, i tessuti vengono stampati contemporaneamente in strati bidimensionali, che vengono poi sovrapposti da un braccio robotico per creare la struttura tridimensionale finale.<\/p>\n

Questo approccio accelera gi\u00e0 il processo, ma per ridurre la morte cellulare, gli strati vengono immediatamente immersi in un bagno criogenico per congelarli. Secondo il team, questo ottimizza notevolmente le condizioni per la sopravvivenza dei materiali stampati durante la conservazione e il trasporto.<\/p>\n

\u00abAttualmente, la biostampa viene utilizzata principalmente per creare piccoli volumi di tessuto\u00bb, afferma Boris Rubinstein, professore di ingegneria. \u00abIl problema con la biostampa 3D \u00e8 che si tratta di un processo molto lento, quindi non puoi stampare nulla di grande perch\u00e9 i materiali biologici moriranno nel frattempo che tu finisci. Una delle nostre innovazioni \u00e8 che congeliamo i tessuti durante la loro stampa, in modo che il materiale biologico venga conservato\u00bb.<\/p>\n

Il team riconosce che questo approccio multilivello alla stampa 3D non \u00e8 nuovo, ma la sua applicazione ai biomateriali \u00e8 un'innovazione. Questo consente di stampare strati in un luogo e poi trasportarli in un altro per l'assemblaggio.<\/p>\n

Oltre alla creazione di tessuti e organi, questa tecnica ha altre applicazioni, ad esempio nella produzione di alimenti surgelati su scala industriale.<\/p>\n

\r\n \"Guarda\r\n
<\/div>\r\n <\/div><\/center><\/p>\n

Lo studio \u00e8 stato pubblicato in <\/a>Journal of Medical Devices<\/a><\/noindex>.<\/p>\n

<\/p>\n

<\/center><\/p>\n

\t\t\t\t


\n\t\t\t\t\t\t\t\t<\/center>
Fonte: 3dnews.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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