Over 1640 New York Auctions End Tomorrow 11/30 - Bid Now
Over 1000 Total Lots Up For Auction at Three Locations - MN 12/01, CA 12/03, UT 12/09

铝在乳房组织-一个合理因素在乳腺癌的起因

Bradley Rose, Senior Designer | September 03, 2007
Aluminum, which is
commonly found in
deodorant, is linked
to breast cancer
A new study has identified a regionally-specific distribution of aluminum in breast tissue which may have implications for the cause of breast cancer.

Scientists have found that the aluminum content of breast tissue and breast tissue fat was significantly higher in the outer regions of the breast, in close proximity to the area where there would be the highest density of antiperspirant.

Recent research has linked breast cancer with the use of aluminum-based, underarm antiperspirants. The known, but unaccounted for, higher incidence of tumors in the upper outer quadrant of the breast seemed to support such a contention. However, the identification of a mechanism of antiperspirant-induced breast cancer has remained elusive.

New & Refurbished C-Arm Systems. Call 702.384.0085 Today!

Quest Imaging Solutions provides all major brands of surgical c-arms (new and refurbished) and carries a large inventory for purchase or rent. With over 20 years in the medical equipment business we can help you fulfill your equipment needs

A team, led by Dr Chris Exley of the Birchall Centre for Inorganic Chemistry and Materials at Keele University in the UK, measured the aluminum content of breast tissue from 17 breast cancer patients recruited from Wythenshaw Hospital, Manchester, UK. Whether differences in the distribution of aluminum in the breast are related to the known higher incidence of tumors in the outer upper quadrant of the breast remains to be ascertained.

The major constituent of antiperspirant is aluminum salts which have long been associated with cancer, as well as other human disease. The daily application of aluminum-based antiperspirants should result in the presence of aluminum in the tissue of the underarm and surrounding areas, though there is almost no data on aluminum in breast tissue.

Breast cancer is the most common malignancy in women and is the leading cause of death among women aged 35-54. The cause of breast cancer is unknown and is likely to be a combination of genetic and environmental factors.

Each of the patients in the study had undergone a mastectomy and biopsies from four different regions of the breast on a transect from the outer (axilla and lateral) to the inner (middle and medial) breast were collected.

Tests showed that while there were significant differences in the concentrations of aluminum between individuals they did show "a statistically higher concentration of aluminum in the outer as compared with the inner region of the breast".
The report, published in the Journal of Inorganic Biochemistry, goes on: "We have confirmed the presence of aluminum in breast tissue and its possible regional distribution within the breast. Higher content of aluminum in the outer breast might be explained by this region's closer proximity to the underarm where the highest density of application of antiperspirant could be assumed. There is evidence that skin is permeable to aluminum when applied as antiperspirant.
"However, we have no direct evidence that the aluminum measured in these breast biopsies originated from antiperspirant. An alternative explanation might be that tumorous tissue acts as a 'sink' for systemic aluminum".

But it goes on to say that "aluminum in breast tissue might contribute" to breast cancer.
"Aluminum is a metalloestrogen, it is genotoxic, is bound by DNA and has been shown to be carcinogenic. It is also a pro-oxidant and this unusual property might provide a mechanistic basis for any putative carcinogenicity. The confirmed presence of aluminum in breast tissue biopsies highlights its potential as a possible factor in the aetiology of breast cancer".