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Making sense out of the biological matrix of bipolar disorder
Date:8/20/2012

Philadelphia, PA, August 20, 2012 The more that we understand the brain, the more complex it becomes. The same can be said about the genetics and neurobiology of psychiatric disorders. For "Mendelian" disorders, like Huntington disease, mutation of a single gene predictably produces a single clinical disorder, following relatively simple genetic principals. Compared to Mendelian disorders, understanding bipolar disorder has been extremely challenging. Its biology is not well understood and its genetics are complex.

In a new paper, Dr. Inti Pedroso and colleagues utilize an integrative approach to probe the biology of bipolar disorder. They combined the results of three genome-wide association studies, which examined the association of common gene variants with bipolar disorder throughout the genome, and a study of gene expression patterns in post-mortem brain tissue from people who had been diagnosed with bipolar disorder. The findings were analyzed within the context of how brain proteins relate to each other based on the Human Protein Reference Database protein-protein interaction network.

"None of our research approaches provides us with sufficient information, by itself, to understand the neurobiology of psychiatric disorders. This innovative paper wrestles with this challenge in a creative way that helps us to move forward in thinking about the neurobiology of bipolar disorder," commented Dr. John Krystal, Editor of Biological Psychiatry.

Dr. Pedroso explained, "We combined information about genetic variation from thousands of cases and controls with brain gene expression data and information from protein databases to identify networks of genes and proteins in the brain that are key in the development of bipolar disorder."

The analysis resulted in the ability to define risk gene variants that were deemed functional, by virtue of the association with changes in gene expression levels, and to group these functiona
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Contact: Rhiannon Bugno
Biol.Psych@utsouthwestern.edu
214-648-0880
Elsevier
Source:Eurekalert

Page: 1 2

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