Studi menemukan, Obat osteoporosis umum berhubungan dengan penurunan risiko kanker payudara --T-REC-komunitas reptil-semaranng--KSE-komunitas satwa eksotik

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Studi menemukan, Obat osteoporosis umum berhubungan dengan penurunan risiko kanker payudara 

Wanita dengan  beberapa jenis obat bone-building  yang digunakan untuk mencegah dan mengobati osteoporosis mungkin berisiko lebih rendah terkena kanker payudara , menurut sebuah studi baru ....read more

Common
osteoporosis drugs are associated with a decrease in risk of breast cancer,
study finds

Date:

March 3, 2010

Source:

Fred Hutchinson Cancer
Research Center

Summary:

Women who take some
types of bone-building drugs used to prevent and treat osteoporosis may be at
lower risk of breast cancer, according to a new study.

.......................

women who take some
types of bone-building drugs used to prevent and treat osteoporosis may be at
lower risk of breast cancer, according to a study by U.S. researchers published
in the British Journal of Cancer.

The study found that women who used bisphosphonate drugs, such as Fosamax,
Boniva and Zomita, for more than two years had a nearly 40 percent reduction in
risk as compared to those who did not, according to lead author Polly Newcomb,
Ph.D., M.P.H., head of the Cancer Prevention Program at Fred Hutchinson Cancer
Research Center.

"This large study provides new evidence that the use of
bisphosphonates is associated with a potentially important reduction in breast
cancer risk," Newcomb said.

The protective effect was observed only among women who were not obese.
"Obese women may have elevated estrogen levels, so underlying hormones may
influence the ability of bisphosphonates to reduce breast cancer risk,"
Newcomb said.

The way in which these drugs may prevent breast cancer is not known, but
several research observations may be relevant. "These drugs may affect
cell function and be important in cell growth and death -- specifically the
death of tumors or even premalignant disease," Newcomb said. Researchers
have found that some kinds of bisphosphonates directly cause tumor apoptosis
(cellular suicide), inhibit angiogenesis (prevent tumors from establishing a
blood supply) and prevent tumor-cell adhesion (the ability of cancer cells to
bind to one another).

The study involved nearly 6,000 Wisconsin women, aged 20 to 69. Half had
been diagnosed with invasive breast cancer and, for comparison purposes, half
had not. The women were interviewed about their bone health -- their history of
fractures, whether they'd been diagnosed with osteoporosis and their history of
bisphosphonate use.

Breast cancer risk factors such as first-degree family history of the
disease, age at first birth, postmenopausal hormone use and body mass index
were accounted for in the analysis. "Because we were able to account for
important cofounders, these findings may reflect real benefits due to the
anti-tumor mechanisms of these medications," the authors wrote.

The National Cancer Institute funded the study, which was conducted in
collaboration with researchers at the University of Wisconsin Carbone
Comprehensive Cancer Center.







Story Source:

The above story is based on materials provided by Fred Hutchinson Cancer Research
Center. Note: Materials may be edited for content and length.




http://www.sciencedaily.com/releases/2010/03/100302195924.htm

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