Oamenii de știință au analizat probe prelevate din 2.600 de tumori prezente în 38 de tipuri de cancer; în 13% dintre acestea au găsit urme de virusuri, dar și posibile cauze ale transformării celulelor normale în celule canceroase, scrie The Telegraph, care citează Nature Genetics.
Sunt cazuri, au dezvăluit cercetătorii, când virusul pătrunde în codul genetic al pacientului și împiedică celulele să repare “stricăciunile” din ADN – așa apar mutațiile.
Până acum, se știa că anumite tipuri de cancer sunt declanșate de virusuri – cancerul cervical, de exemplu, pentru care se face vinovat HVP (papilomavirusul uman).
Însă nu se știa cât de multe cancere pot avea cauze virale.
În cadrul noii cercetări, au fost găsite virusuri în cancerele localizate la cap/creier, tiroidă, măduva spinării, oase, piele, ganglioni limfatici, gât, esofag, sâni, ficat, pancreas, stomac, rinichi, vezica urinară, vezica biliară, plămâni, col uterin, ovare, colon și prostată.
Noua descoperire ne poate ajuta să dezvoltăm vaccinuri, ca în cazul HPV, și să reducem numărul de îmbolnăviri de cancer la nivel global.
Dr. Daniel Brewer, unul dintre autorii studiului:
Este foarte important să găsim legătura dintre virus și tipul de cancer pe care-l declanșează. Dacă reușim să identificăm virusurile carcinogene, putem să prevenim bolile cu vaccinuri.
Dr. Marc Zapatka, unul dintre autorii studiului:
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