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irumbutt

Re: A New theory that how viruses contribute for Cancer

Hi
with the advance in scienc there is more details knowledge of the mechanism of diseases, its really a new idea, that how viruses leads to cnacer, because first it was said that the virus enter into the genome and mutate the gene control the cell cycle and leads to cancer, but this is new concept

irum

aftabac

A New theory that how viruses contribute for Cancer

A New theory that how viruses contribute for Cancer

A new study suggests that viruses may contribute to cancer by causing excessive death to normal cells while promoting the growth of surviving cells with cancerous traits. Viruses may act as forces of natural selection by wiping out normal cells that support the replication of viruses and leaving behind those cells that have acquired defects in their circuitry. When this process is repeated over and over, cancer can develop say study authors, led by Preet M. Chaudhary, M.D., Ph.D., professor of medicine at the University of Pittsburgh School of Medicine. Their findings are published by Public Library of Science in the Oct. 24 issue of PLoS ONE.
Infection with viruses has been linked to many human cancers, including some forms of Hodgkin’s and non-Hodgkin’s lymphomas, sarcomas and cancers of the throat and liver. Over the years, scientists have proposed a number of mechanisms to explain this link. One commonly held belief is that when a virus infects a cell, its genetic material alters the cell, making it grow uncontrollably, eventually leading to cancer. Some viruses also are thought to promote cancer by causing chronic inflammation. In his study, it is proposes that viruses also can lead to cancer in a less direct manner.
For full story please click on link below
http://www.biologynews.net/archives/2007/10/24/study_proposes_new_theory_of_how_viruses_may_contribute_to_cancer.html

best regards
aftab ahmad chatha