Featured Research

from universities, journals, and other organizations

Why Synthetic Estrogens Wreak Havoc On Reproductive System

Date:
April 2, 2008
Source:
Yale University
Summary:
Researchers at Yale School of Medicine now have a clearer understanding of why synthetic estrogens such as those found in many widely-used plastics have a detrimental effect on a developing fetus, cause fertility problems, as well as vaginal and breast cancers.

Researchers at Yale School of Medicine now have a clearer understanding of why synthetic estrogens such as those found in many widely-used plastics have a detrimental effect on a developing fetus, cause fertility problems, as well as vaginal and breast cancers.

The study was led by Hugh S. Taylor, M.D., professor in the Department of Obstetrics, Gynecology & Reproductive Science and section chief of Reproductive Endocrinology and Infertility at Yale School of Medicine.

Past research shows that exposure to the synthetic estrogen diethylstilbestrol (DES) alters the expression of HOXA10, a gene necessary for uterine development, and increases the risk of cancer and pregnancy complications in female offspring.

The team sought to understand why a developing female fetus exposed to DES might develop uterine cancer and other problems years after exposure. Even though DES is no longer on the market, the authors chose to study its effects to gain insight into how similar synthetic estrogens might work.

The team studied DNA from the offspring of 30 pregnant mice injected with DES. They found changes in certain regions of the HOXA10 gene. These alterations continued beyond the time of development and persisted into adulthood, indicating that exposure to DES and similar substances results in lasting genetic memory, known as "imprinting."

"We found that HOXA 10 protein expression was shifted to the bottom portion of the uterus in the female offspring," said Taylor. "We also found increased amounts of the enzyme responsible for changes in the DNA. Rather than just changing how much of the protein is there, DES is actually changing the structure of the HOXA 10 gene.

"These findings bring us closer to understanding the way in which DES interacts with the developing reproductive system," said Taylor.

Pregnant women are frequently exposed to other similar substances with estrogen-like properties, such as Bisphenol-A (BPA). BPA is found in common household plastics and has recently been linked to long-term fertility problems. Like DES, these other substances may also impact female reproductive tract development and the future fertility of female fetuses.

Preliminary results of the study will be presented at the 2008 Society for Gynecologic Investigation (SGI) Annual Scientific Meeting held March 26-29 in San Diego, California. Other authors on the abstract included Jason Bromer, who will present the abstract, and Jie Wu. This abstract is an SGI Trainee Plenary Session Selection and winner of the SGI President's Presenter Award.


Story Source:

The above story is based on materials provided by Yale University. Note: Materials may be edited for content and length.


Cite This Page:

Yale University. "Why Synthetic Estrogens Wreak Havoc On Reproductive System." ScienceDaily. ScienceDaily, 2 April 2008. <www.sciencedaily.com/releases/2008/03/080331093530.htm>.
Yale University. (2008, April 2). Why Synthetic Estrogens Wreak Havoc On Reproductive System. ScienceDaily. Retrieved October 20, 2014 from www.sciencedaily.com/releases/2008/03/080331093530.htm
Yale University. "Why Synthetic Estrogens Wreak Havoc On Reproductive System." ScienceDaily. www.sciencedaily.com/releases/2008/03/080331093530.htm (accessed October 20, 2014).

Share This



More Health & Medicine News

Monday, October 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Microneedle Patch Promises Painless Pricks

Microneedle Patch Promises Painless Pricks

Reuters - Innovations Video Online (Oct. 18, 2014) Researchers at The National University of Singapore have invented a new microneedle patch that could offer a faster and less painful delivery of drugs such as insulin and painkillers. Video provided by Reuters
Powered by NewsLook.com
Raw: Nurse Nina Pham Arrives in Maryland

Raw: Nurse Nina Pham Arrives in Maryland

AP (Oct. 17, 2014) The first nurse to be diagnosed with Ebola at a Dallas hospital walked down the stairs of an executive jet into an ambulance at an airport in Frederick, Maryland, on Thursday. Pham will be treated at the National Institutes of Health. (Oct. 16) Video provided by AP
Powered by NewsLook.com
Raw: Cruise Ship Returns to US Over Ebola Fears

Raw: Cruise Ship Returns to US Over Ebola Fears

AP (Oct. 17, 2014) A Caribbean cruise ship carrying a Dallas health care worker who is being monitored for signs of the Ebola virus is heading back to Texas, US, after being refused permission to dock in Cozumel, Mexico. (Oct. 17) Video provided by AP
Powered by NewsLook.com
Spanish Govt: Four Suspected Ebola Cases in Spain Test Negative

Spanish Govt: Four Suspected Ebola Cases in Spain Test Negative

AFP (Oct. 17, 2014) All four suspected Ebola cases admitted to hospitals in Spain on Thursday have tested negative for the deadly virus in a first round of tests, the government said Friday. Duration: 00:55 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins