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Resveratrol Linked to Breast Cancer Prevention E-mail
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Early laboratory research has shown that resveratrol found in red wine and grapes can suppress the abnormal resveratrol red winecell formation that leads to most types of breast cancer. This breast cancer study suggests that resveratrol may play a potential role for the agent in breast cancer prevention. Resveratrol is also sold in extract form as a dietary supplement at most major drug stores.

“Resveratrol has the ability to prevent the first step that occurs when estrogen starts the process that leads to cancer by blocking the formation of the estrogen DNA adducts. We believe that this could stop the whole progression that leads to breast cancer down the road,” said Eleanor G. Rogan, Ph.D., a professor in the Eppley Institute for Research in Cancer and Allied Diseases at the University of Nebraska Medical Center.

Rogan was the lead author of the report that was published in the July 2008 issue of Cancer Prevention Research, a journal of the American Association for Cancer Research.

For the current study, Rogan and colleagues measured the effect of resveratrol on cellular functions known to contribute to breast cancer.

The formation of breast cancer is a multi-step process which differs depending on type of disease, a patient’s genetic makeup and other factors. However, scientists know that many breast cancers are fueled by increased estrogen, which collects and reacts with DNA molecules to form adducts. Rogan and colleagues found that resveratrol was able to suppress the formation of these DNA adducts.

“This is dramatic because it was able to be done with fairly low concentrations of resveratrol to stop the formation of these DNA adducts in the cells we studied,” said Rogan. Although researchers experimented with up to 100 µmol/L of resveratrol, the suppression of DNA adducts was seen with 10 µmol/L. A glass of red wine contains between 9 and 28 µmol/L of resveratrol.

The researchers also found that resveratrol suppressed the expression of CYP1B1 and the formation of 2,3,7,8-Tetrachlorodibenzo-p-dioxin, two known risk factors for breast cancer.

Rogan said resveratrol works by inducing an enzyme called quinone reductase, which reduces the estrogen metabolite back to inactive form. By making estrogen inactive, resveratrol decreases the associated risk to breast cancer.

The current study was conducted in laboratory cultures, and will need to be confirmed in larger human trials, Rogan said.

About Breast Cancer

Breast cancer is a malignant (cancerous) tumor that starts from cells of the breast. The disease occurs mostly in women, but men can get breast cancer too. In the U.S., it affects one in eight women. There are many types of breast cancer, though some of them are very rare. Sometimes a breast tumor can be a combination of these types and to have a mixture of invasive and in situ cancer.  The most common types of breast cancer are:

  • Lobular carcinoma in situ (LCIS): This condition which occurs in approximately 8% of all cases, begins in the milk-making glands but does not go through the wall of the lobules. Although not a true cancer, having LCIS increases a woman's risk of getting cancer later. For this reason, it's important that women with LCIS to follow the screening guidelines for breast cancer.
  • Ductal carcinoma in situ (DCIS): This is the most common type of non-invasive breast cancer (85 - 90% of all cases). DCIS means that the cancer is only in the ducts. It has not spread through the walls of the ducts into the tissue of the breast. Nearly all women with cancer at this stage can be cured. Often the best way to find DCIS early is with a mammogram.
Less common are:
  • Paget's disease of the nipple. Paget's disease of the nipple or breast is a rare type of breast cancer, which can occur in women and men. It shows up in and around the nipple, and usually signals the presence of breast cancer beneath the skin. Most cases are found in menopausal women, but can also appear in women that are as young as 20.  Early stages symptoms include redness, scaly and flaky, and  mild irritation of  nipple skin. Advanced stages may include: burning or painful nipple skin, ooze or bloody discharge from the nipple (not milk), tingling in nipple skin, very sensitive skin on the nipple, itchiness that doesn't respond to creams, nipple retraction (pulls into the breast), scaly rash on areola skin, and/or breast lump beneath the affected skin. 
  • Inflammatory breast cancer (IBC): This uncommon type of invasive breast cancer accounts for about 1% to 3% of all breast cancers. Usually there is no single lump or tumor. Instead, inflammatory breast cancer (IBC) makes the skin of the breast look red and feel warm. It also gives the skin a thick, pitted appearance that looks a lot like an orange peel. Doctors now know that these changes are not caused by inflammation or infection, but by cancer cells blocking lymph vessels in the skin. The breast may become larger, firmer, tender, or itchy. IBC is often mistaken for an infection in its early stages. Because there is no defined lump, it may not appear on a mammogram, which may make it even harder to catch it early. It usually has a higher chance of spreading and a worse outlook than invasive ductal or lobular cancer.
Symptoms of breast cancer may include:
  • a lump or a thickening in the breast or in the armpit. Note Most breast lumps are benign (be-nine); that is, they are not cancer. Benign breast tumors are abnormal growths, but they do not spread outside of the breast and they are not life threatening. But some benign breast lumps can increase a woman's risk of getting breast cancer. Most lumps turn out to be caused by fibrocystic (fi-bro-sis-tik) changes. Cysts are fluid-filled sacs. Fibrosis is the formation of scar-like tissue. Such changes can cause breast swelling and pain. The breasts may feel lumpy, and sometimes there is a clear or slightly cloudy nipple discharge.
  • a change of size or shape of the nipple
  • a change of color or texture of the nipple or the areola, or of the skin of the breast itself (dimples, puckers, rash)
  • a discharge from the breast
  • a change of size or shape of the mature breast
  • fluid (not milk) leaking from the nipple
 

 

 

 
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