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Children's Health Author: Staff Editor Last Updated: Sep 7, 2017 - 10:06:33 PM



The Adolescent Brain Develops Differently in Bipolar Disorder

By Staff Editor
May 29, 2015 - 9:20:04 AM



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(HealthNewsDigest.com) - New Haven, Conn.-In adolescents with bipolar disorder, key areas of the brain that help regulate emotions develop differently, a new study by Yale School of Medicine researchers shows.

In brain areas that regulate emotions, adolescents with bipolar disorder lose larger-than-anticipated volumes of gray matter, or neurons, and show no increase in white matter connections, which is a hallmark of normal adolescent brain development, according to the imaging study published May 29 in the journal Biological Psychiatry.

The differences were noted in the prefrontal cortex and insula in the magnetic resonance imaging scans - repeated over a two-year period - of 37 adolescents with bipolar disorder when compared to the scans of 35 adolescents without the disorder.

"In adolescence, the brain is very plastic so the hope is that one day we can develop interventions to prevent the development of bipolar disorder," said senior author Dr. Hilary Blumberg, professor of psychiatry, diagnostic radiology, and in the Yale Child Study Center. She is also the newly appointed John and Hope Furth Professor of Psychiatric Neuroscience.

Bipolar disorder often first appears in adolescence and is marked by severe shifts in mood, energy, and activity levels. Individuals with bipolar disorder can have trouble controlling impulses and have a high risk of suicide and substance abuse.

While adolescents tend to lose gray matter in normal development, the study showed that adolescents with bipolar disorder lose more. Moreover, the study demonstrated that they add fewer white matter connections that typically characterize development well into adulthood. These changes suggest that brain circuits that regulate emotions develop differently in adolescents with bipolar disorder.

The research was funded by: the National Institutes of Health (National Institute of Mental Health and National Institute for Drug Abuse), International Bipolar Foundation, Brain and Behavior Research Foundation, American Foundation for the Prevention of Suicide, Klingenstein Foundation, Women's Health Research at Yale, the Attias Family Foundation, and The John and Hope Furth endowment.

Other authors are Pablo Najt (now at the National University of Ireland, Galway), Fei Wang, Linda Spencer, Jennifer A.Y. Johnston, Elizabeth T. Cox Lippard, Brian P. Pittman, Cheryl Lacadie, Lawrence H. Staib and Xenophon Papademetris.


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