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2004 AUG 5 - (NewsRx.com & NewsRx.net) -- A new study finds increasing evidence a virus may play a role in breast cancer.
Researchers reported that nearly three-quarters of a small sample of Tunisian breast cancer patients showed evidence of a virus similar to one known to cause breast cancer in mice. This is twice the rate seen in women in the United States.
The study was published July 12, 2004, in the online edition of Cancer and will appear in the August 15, 2004, print edition of the journal.
Viruses play a primary role in the development of several cancers, such as the human T-cell lymphotropic virus and adult T-cell leukemia/lymphoma or human herpesvirus 8 (HHV8) and Kaposi sarcoma (KS). Geographic variability has also been noted in these cancer-promoting viruses. For example, KS and HHV8 are least common in the United States and more common in the Mediterranean and Central African regions.
Existing epidemiologic evidence and animal models indicate that a virus may be involved in the development of certain breast cancers. Previous analyses of human breast tissue samples found viral sequences from the mouse mammary tumor virus (MMTV) in a large percentage of breast cancers but not in normal tissue. MMTV may be spread by a species of house mouse that is ...
Source: HighBeam Research, Virus linked to aggressive forms of disease.