Navigation Links
Study links breast cancer risk to early-life diet and metabolic syndrome
Date:9/17/2012

Striking new evidence suggesting that diet and related factors early in life can boost the risk for breast cancer -- totally independent of the body's production of the hormone estrogen -- has been uncovered by a team of researchers at the University of California, Davis.

The findings provide new insights into the processes that regulate normal breast development, which can impact the risk of developing breast cancer later in life. The study will be published Sept. 17 in the early edition of the Proceedings of the National Academy of Sciences.

"It's long been assumed that circulating estrogens from the ovaries, which underlie normal female reproductive development, were crucial for the onset of breast growth and development," said Russ Hovey, a UC Davis associate professor of animal science and senior author on the study.

"Our findings, however, suggest that diet and shifts in body metabolism that parallel changes seen during obesity and Type 2 diabetes can also stimulate breast growth entirely independent of estrogen's effects," he said.

The studies with mice used a diet supplemented with a form of the fatty acid known as 10, 12 conjugated linoleic acid or 10, 12 CLA, which mimics specific aspects of a broader metabolic syndrome.

In humans, this syndrome is linked to a broad array of changes associated with obesity that can increase the risk of Type 2 diabetes and cardiovascular disease.

The 10, 12 CLA was added to the diet of the test group of mice because it is known to disrupt normal metabolic processes. In this study, the supplement stimulated the mammary ducts to grow, despite the fact that the mice lacked estrogen.

The researchers demonstrated that the diet-induced breast development also increased the formation of mammary tumors in some of the mice.

They ruled out a role for estrogen as the possible cause for how diet increased growth of the breast tissues by giving the supplement to male mice and to female mice in which the function of estrogen was blocked.

The research team also discovered that various mouse strains responded differently to the dietary supplement despite similar metabolic changes, suggesting that there may be a genetic component for how diet and related metabolic changes affect breast cancer risk in different populations, Hovey said.

He noted that results from the study would likely have significant implications for better understanding human breast development before puberty and after menopause, when estrogens are less present.

"The findings of this study are particularly important when we superimpose them on data showing that girls are experiencing breast development at earlier ages, coincident with a growing epidemic of childhood obesity," Hovey said.


'/>"/>
Contact: Patricia Bailey
pjbailey@ucdavis.edu
530-752-9843
University of California - Davis
Source:Eurekalert

Related medicine news :

1. Study Suggests Vaccine May Help Kids With Brain Cancer
2. Study reveals how cancer drug causes diabetic-like state
3. Coffee Drinking in Pregnancy Wont Lead to Sleepless Baby: Study
4. Lower GI problems plague many with rheumatoid arthritis, Mayo Clinic study finds
5. Veggies Like Broccoli, Cabbage May Help Fight Breast Cancer: Study
6. No Added Cancer Risk From Hip Replacement Materials: Study
7. Reported Decline in U.S. Pneumonia Deaths May Be False: Study
8. Early Study Finds Some Promise for Lung Cancer Vaccine
9. Narcissists Often Ace Job Interviews, Study Finds
10. Sexual objectification of female artists in music videos exists regardless of race, MU study finds
11. Soy may alleviate hot flashes in menopause, large-scale study finds
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/25/2016)... ... ... closing of Bruton Memorial Library on June 21 due to a possible lice infestation, as ... of head lice: the parasite’s ability to live away from a human host, and to ... one in the event that lice have simply gotten out of control. , As lice ...
(Date:6/25/2016)... ... ... As a lifelong Southern Californian, Dr. Omkar Marathe earned his Bachelors in ... School of Medicine at UCLA. He trained in Internal Medicine at Scripps Green Hospital ... at the UCLA-Olive View-Cedars Sinai program where he had the opportunity to train in ...
(Date:6/25/2016)... ... June 25, 2016 , ... Conventional wisdom preaches the ... In terms of the latter, setting the bar too high can result in disappointment, ... just slow progress toward their goal. , Research from PsychTests.com reveals ...
(Date:6/24/2016)... (PRWEB) , ... June 24, 2016 , ... June 19, ... the dangers associated with chronic pain and the benefits of holistic treatments, Serenity ... who are suffering with Sickle Cell Disease. , Sickle Cell Disease (SCD) is a ...
(Date:6/24/2016)... Fla. (PRWEB) , ... June 24, 2016 , ... Global ... Trend magazine’s 2016 Legal Elite. The attorneys chosen by their peers for this recognition ... Florida. , Seven Greenberg Traurig Shareholders received special honors as members of this year’s ...
Breaking Medicine News(10 mins):
(Date:6/26/2016)... 2016 One of Australia,s successful ... of a new biotechnology company, Noxopharm Limited [ABN 50 608 966 ... and to list on the ASX. Noxopharm is a ... enter a Phase 1 clinical study later this year. ... of the biggest problems facing cancer patients - the ability of ...
(Date:6/26/2016)... 2016 Jazz Pharmaceuticals plc (Nasdaq: ... Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended ("HSR"), ... Inc. ("Celator"; Nasdaq: CPXX ) expired effective ... As previously announced on May 31, 2016, ... agreement under which Jazz Pharmaceuticals has commenced a tender ...
(Date:6/26/2016)... -- VMS Rehab Systems, Inc. ( www.vmsrehabsystemsinc.com ) reported today ... to build a strong and stable market for trading ... the OTC Markets-pink current trading platform. Explains ... seeing an anomaly in market trading activities that may ... Company, but shareholders and market players as well. I ...
Breaking Medicine Technology: