Breast Cancer Expert Forum
virus and breast cancer
About This Forum:

Questions posted in the Breast Cancer Forum are answered by medical professionals and experts. Topics include Breast Biopsy, Chemotherapy, Hormone Therapy, Lumps, Lumpectomy, Lymph node dissection, Lymphedema, Mammograms, Mastectomy, Radiation Therapy, Reconstruction, Self Breast Exam, and Surgery.

Font Size:
A
A
A
Background:
Blank
Blank
Blank
This expert forum is not accepting new questions. Please post your question in one of our medical support communities.
Blank Blank

virus and breast cancer

Hello Im sorry if my question is a little strange and abstract. I hope you can help me. I recently found that breast cancer could be caused by a virus (mmtv) and i hope you can tell me whether it is contagious and if yes how?
my mother has cancer and we share all kinds of utensils. thank you!
Related Discussions
1760320_tn?1316457433
Dear Ivankaivanova,

I understand your concern, presumably after reading an article on MMTV (Mouse mammary tumor virus). However, though gene sequences of MMTV have been found in human breast and other cancers, its causality is not yet proven. The human-to-human transmission of MMTV causing breast cancer is even more hypothetical at this point. It is under research.

Please go through the following excerpts from recent scientific papers -

"Mouse mammary tumor virus (MMTV) is a hormonally regulated, oncogenic virus of mice. MMTV-like virus DNA has previously been detected in human breast cancers, liver disease, and liver cancers. It is hypothesized that local hormonal effects might be of primary importance in determining MMTV-like virus detection in human tumors. Therefore, unlike the mouse model, the detection of MMTV-like env sequences in human cancers in addition to breast indicates that MMTV-like viral expression is not breast cancer-specific and may relate to hormone-dependent viral expression." (Ref: J Med Virol 2010)

"Mouse mammary tumor virus (MMTV) sequences have been reported to be present in some human breast cancers, but it is unclear whether they have any causal role. Our findings extend the evidence that MMTV sequences found in naturally occurring mouse mammary tumors can be found in some human breast cancers, prompting further evaluation of causal roles in these settings." (Ref: Cancer Research 2010)

I don't think sharing utensils spreads breast cancer. There is no evidence to support the theory that breast cancer spreads from one person to another. But having a first-degree relative with breast cancer increases one's chances of getting breast cancer (due to genetic causes), and appropriate precautions like regular breast examination and mammography should be undertaken.

Hope that this information helps and hope that you will get better soon.

Thank you for using MedHelp's "Ask an Expert" Service, where we feature some of world's renowned medical experts in their fields. Millions have benefitted from our service to get personalized advice for them and for their loved ones.

Best Regards,
Dr. Indranil Ghosh
8 Comments
Blank
1793863_tn?1325005784
thank you so much for answering me! I really appreciate you help. I just have 2 more questions first I'd like to ask wheather you think that the mmtv sequences as i've written in the articles are placed only in the breast cancer tissue and nowhere else in the body of the patient... Im studing microbiology and i just cant imagine how is what possible.
Second Im wondering if having a cat could be the reason of my mother illness and do you think they can transmit the virus somehow?
Blank
1760320_tn?1316457433
Dear Ivankaivanova,

Thank you for the follow up.

Yes, so far this sequences have been detected in breast cancer tissue and in some other cancers also, not in normal tissue.

Till date, no study has supported that these have been transmitted from an animal to humans.

I think this answers your second question that having a cat is not the cause for breast cancer in your mother. A cat can carry few germs to cause other infections though.

Hope that this information helps and hope that you will get better soon.

Thank you for using MedHelp's "Ask an Expert" Service, where we feature some of world's renowned medical experts in their fields. Millions have benefitted from our service to get personalized advice for them and for their loved ones.

Best Regards
Dr. Indranil Ghosh
Blank
1793863_tn?1325005784
hello again Im sorry but one thing i've recently red really disturbed me and i know you can help.. I've red one new article about mmt virus where is written that the transmission of this virus from mices to humans could be via some uncooked cereals because mices sometimes eat them and leave traces (as faces) i dont know how long could this virus possibly live and things like that but i eat cereals since 3 years (uncoocked) sorry again i know its very abstract qestion hope you can help
Blank
1760320_tn?1316457433
Dear ivankaivanova,

In order to post a follow up question for additional answers, could you please copy and paste the original question and follow up question as a new paid question, so that your concern could be addressed as soon as possible by the doctor?

many thanks!

Dr. Indranil Ghosh.
Blank
1793863_tn?1325005784
Hello Im sorry if my question is a little strange and abstract. I hope you can help me. I recently found that breast cancer could be caused by a virus (mmtv) and i hope you can tell me whether it is contagious and if yes how?
my mother has cancer and we share all kinds of utensils. thank you!
Blank
1793863_tn?1325005784
hello again Im sorry but one thing i've recently red really disturbed me and i know you can help.. I've red one new article about mmt virus where is written that the transmission of this virus from mices to humans could be via some uncooked cereals because mices sometimes eat them and leave traces (as faces) i dont know how long could this virus possibly live and things like that but i eat cereals since 3 years (uncoocked) sorry again i know its very abstract qestion hope you can help
Blank
1793863_tn?1325005784
p.s. i also red mices can carry leukemia virus to humans please help im worried for me and my family
Blank
Continue discussion Blank
MedHelp Health Answers
Blank
Weight Tracker
Weight Tracker
Start Tracking Now
RSS Expert Activity
242532_tn?1269553979
Blank
Control Emotional Eating with this ...
Sep 04 by Roger Gould, M.D.Blank
242532_tn?1269553979
Blank
Emotional Eating Control: How to St...
Aug 28 by Roger Gould, M.D.Blank
233488_tn?1310696703
Blank
New Cannabis Article from NORTH Mag...
Jul 20 by John C Hagan III, MD, FACS, FAAOBlank