Nav: Home

Mouse study finds BPA exposure has transgenerational effects on gene linked to autism

June 12, 2019

WASHINGTON--Transgenerational bisphenol A (BPA) exposure may contribute to autism, according to a mouse study published in the Endocrine Society's journal Endocrinology.

Endocrine disrupting chemicals (EDCs) are chemicals or mixtures of chemicals that interfere with the way the body's hormones work. BPA is a common EDC used in plastics and food storage material, and it is already present in most humans' urine or blood. Animal studies have linked BPA to anxiety, aggression, and poor learning and social interactions. Studies of human populations report associations between BPA and neurobehavioral issues like attention deficit hyperactivity disorder and autism.

"Exposure of mouse fetuses to BPA disrupts formation of nerve cell connections in the brain, and this is a transgenerational effect," said the study's senior author, Emilie F. Rissman, Ph.D., of University of Virginia School of Medicine in Charlottesville, Va. and North Carolina State University in Raleigh, N.C. "To put this in human terms, if your great grandmother was exposed to BPA during her pregnancy and none of your other relatives ever came into contact with BPA, your brain would still show these effects."

In this mouse study, researchers tested mice descended from those exposed to BPA for social recognition and found that they showed a social behavioral deficient like autistic behavior. Mice whose great grandmothers were exposed to BPA during pregnancy were more active and took longer to habituate to strangers than other mice. More strikingly, they didn't explore the new mice that were introduced to the group. Mice are very social and curious, so this is an exciting finding.

"Even if we ban all BPA right now, that will not change these long-term effects on the brain," Rissman said.
-end-
Other authors of the study include: Jennifer T. Wolstenholme of the University of Virginia School of Medicine in Charlottesville, Va., and Virginia Commonwealth University in Richmond, Va.; Zuzana Drobná and Joshua W. Irvin of North Carolina State University; Anne D. Henriksen of James Madison University in Harrisonburg, Va.; Jessica A. Goldsby of the University of Virginia School of Medicine; Rachel Stevenson of Virginia Commonwealth University; and Jodi A. Flaws of the University of Illinois in Urbana, Ill.

The study received funding support from the National Institutes of Health and the Environmental Protection Agency.

The study, "Transgenerational Bisphenol A Causes Deficits in Social Recognition and Alters Postsynaptic Density Genes in Mice," will be published online, ahead of print.

Endocrinologists are at the core of solving the most pressing health problems of our time, from diabetes and obesity to infertility, bone health, and hormone-related cancers. The Endocrine Society is the world's oldest and largest organization of scientists devoted to hormone research and physicians who care for people with hormone-related conditions.

The Society has more than 18,000 members, including scientists, physicians, educators, nurses and students in 122 countries. To learn more about the Society and the field of endocrinology, visit our site at http://www.endocrine.org. Follow us on Twitter at @TheEndoSociety and @EndoMedia.

The Endocrine Society

Related Autism Articles:

Brain protein mutation from child with autism causes autism-like behavioral change in mice
A de novo gene mutation that encodes a brain protein in a child with autism has been placed into the brains of mice.
Autism and theory of mind
Theory of mind, or the ability to represent other people's minds as distinct from one's own, can be difficult for people with autism.
Potential biomarker for autism
A study of young children with autism spectrum disorder published in JNeurosci reveals altered brain waves compared to typically developing children during a motor control task.
Autism and the smell of fear
Autism typically involves the inability to read social cues. We most often associate this with visual difficulty in interpreting facial expression, but new research at the Weizmann Institute of Science suggests that the sense of smell may also play a central role in autism.
Autism often associated with multiple new mutations
Most autism cases are in families with no previous history of the disorder.
More Autism News and Autism Current Events

Best Science Podcasts 2019

We have hand picked the best science podcasts for 2019. Sit back and enjoy new science podcasts updated daily from your favorite science news services and scientists.
Now Playing: TED Radio Hour

Erasing The Stigma
Many of us either cope with mental illness or know someone who does. But we still have a hard time talking about it. This hour, TED speakers explore ways to push past — and even erase — the stigma. Guests include musician and comedian Jordan Raskopoulos, neuroscientist and psychiatrist Thomas Insel, psychiatrist Dixon Chibanda, anxiety and depression researcher Olivia Remes, and entrepreneur Sangu Delle.
Now Playing: Science for the People

#537 Science Journalism, Hold the Hype
Everyone's seen a piece of science getting over-exaggerated in the media. Most people would be quick to blame journalists and big media for getting in wrong. In many cases, you'd be right. But there's other sources of hype in science journalism. and one of them can be found in the humble, and little-known press release. We're talking with Chris Chambers about doing science about science journalism, and where the hype creeps in. Related links: The association between exaggeration in health related science news and academic press releases: retrospective observational study Claims of causality in health news: a randomised trial This...