Navigation Links
Researchers see BPA effects in monkey mammary glands
Date:5/7/2012

PULLMAN, Wash.A new study finds that fetal exposure to the plastic additive bisphenol A, or BPA, alters mammary gland development in primates. The finding adds to the evidence that the chemical can be causing health problems in humans and bolsters concerns about it contributing to breast cancer.

"Previous studies in mice have demonstrated that low doses of BPA alter the developing mammary gland and that these subtle changes increase the risk of cancer in the adult," says Patricia Hunt, a geneticist in Washington State University's School of Molecular Biosciences. "Some have questioned the relevance of these findings in mice to humans. But finding the same thing in a primate model really hits uncomfortably close to home."

The research appears in the latest Proceedings of the National Academies of Sciences. Hunt and Tufts University School of Medicine researchers Ana Soto and Carlos Sonnenscheinall pioneers in the effects of BPAco-designed the study with Catherine VandeVoort at the University of California at Davis, where the study was performed.

The Tufts researchers compared the structure of newborn mammary glands from BPA-exposed and unexposed female rhesus macaques. Pregnant monkeys were fed a piece of fruit containing a small amount of BPA each day during the gestational period corresponding to the human third trimester of pregnancy, resulting in blood levels of BPA comparable to those of many Americans today.

The researchers found that, at birth, the density of mammary buds was significantly increased in BPA-exposed monkeys, and the overall development of the mammary gland was more advanced compared to unexposed monkeys. Previous studies in the Soto and Sonnenschein laboratories have shown that exposing rodents to tiny amounts of BPA can alter mammary gland development, leading to pre-cancerous and cancerous lesions when the animals exposed in utero reach adult age.

The researchers say the primate research makes them confident that the rodent mammary gland is a reliable model to study developmental exposures to chemicals like BPA that disrupt a mammal's estrogen activity.

"This study buttresses previous findings showing that fetal exposure to low xenoestrogen levels causes developmental alterations that in turn increase the risk of mammary cancer later in life," says Soto. "Because BPA is chemically related to diethylstilbestrol, an estrogen that increased the risk of breast cancer in both rodents and women exposed in the womb, the sum of all these findings strongly suggests that BPA is a breast carcinogen in humans and human exposure to BPA should be curtailed."


'/>"/>

Contact: Pat Hunt
pathunt@wsu.edu
509-335-4954
Washington State University
Source:Eurekalert

Related medicine news :

1. Geisel researchers sift through junk to find colorectal cancer clues
2. Email vacations decrease stress, increase concentration, researchers say
3. Researchers Rejuvenate Blood-Forming Stem Cells in Mice
4. CNIO researchers describe new functions of cohesin relevant for human disease
5. Biomedical researchers receive Hartwell Foundation awards
6. Kessler Foundation researchers present at first International Congress on Cognition in MS
7. Researchers gain better understanding of mechanism behind tau spreading in the brain
8. Moffitt Cancer Center researchers identify drivers of sarcoma growth and survival
9. Researchers determine vitamin D blood level for reducing major medical risks in older adults
10. Researchers creating designer lymph nodes based on Moffitts Total Cancer Care initiative
11. Moffitt researchers find adolescents with cancer concerned about their future reproductive health
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/27/2016)... ... June 27, 2016 , ... TherapySites, the ... affiliation with Tennessee Counseling Association. This new relationship allows TherapySites to ... Counseling Association, adding exclusive benefits and promotional offers. , "TCA is extremely excited ...
(Date:6/27/2016)... ... June 27, 2016 , ... TopConsumerReviews.com recently awarded their highest five-star ... , Millions of individuals in the United States and Canada wear eyeglasses. Once considered ... both correct vision and make a fashion statement. Even celebrities use glasses as a ...
(Date:6/26/2016)... ... 26, 2016 , ... Pixel Film Studios Released ProSlice Levels, a Media Slicing ... their videos a whole new perspective by using the title layers in ProSlice ... , ProSlice Levels contains over 30 Different presets to choose from. FCPX ...
(Date:6/26/2016)... ... June 26, 2016 , ... Many women ... diagnosed with endometriosis. These women need a treatment plan to not only alleviate ... that can help for preservation of fertility and ultimately achieving a pregnancy. The ...
(Date:6/25/2016)... ... ... Bruton Memorial Library on June 21 due to a possible lice infestation, as reported by ... lice: the parasite’s ability to live away from a human host, and to infest common ... the event that lice have simply gotten out of control. , As lice are a ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... 2016 Research and Markets ... Electronics 2015-2025: Applications, Technologies, Forecasts" report to ... In-Mold Electronics, Smart Skin, Structural Health Monitoring, Composite ... Structural electronics involves electronic and/or electrical components and ... dumb structures such as vehicle bodies or conformally ...
(Date:6/24/2016)... BEIJING , June 24, 2016 Dehaier ... or the "Company"), which develops, markets and sells medical ... China , signed a strategic cooperation agreement with ... as "Hongyuan Supply Chain") on June 20, 2016, to ... Under the strategic cooperation agreement, Dehaier will leverage Hongyuan ...
(Date:6/24/2016)... Research and Markets has announced the ... Tests" report to their offering. ... The World Market for Companion Diagnostics covers the ... analysis in the report includes the following: ... Kits) by Region (N. America, EU, ROW), 2015-2020 , ...
Breaking Medicine Technology: