La o analiză detaliată a structurii noului coronavirus, oamenii de știință au descoperit că “țepii” care-l acoperă și care sunt folosiți de acesta pentru a se atașa de membrana celulară sunt de patru ori mai puternici decât cei ai virusului SARS, responsabil pentru epidemia din 2002-2003.
Așadar, SARS-Cov-2 e mult mai bine adaptat infectării gazdei umane decât SARS-Cov.
După ce pătrunde în aparatul respirator, prin nas sau prin gură, noul coronavirus se prinde foarte ușor, cu acești țepi, de celulele din tractul respirator superior, cercetătorii concluzionând că e nevoie de foarte puține particule virale pentru a infecta un organism.
Structura 3D a virusului ne arată că acesta, comparativ cu cel care a dus la epidemia din 2002-2003, a evoluat, a dezvoltat o nouă strategie pentru a se atașa de gazdă, mult mai agresivă. Modul în care aderă la membrana celulelor îi permite să infecteze rapid celulele respective, apoi să se răspândească în tot organismul.
Dr. Fang Li, șeful echipei de cercetători
Această descoperire ar putea fi folosită de cercetătorii care lucrează la vaccinuri împotriva noul coronavirus.
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