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Neuroscientists find excessive protein synthesis linked to autistic-like behaviors
Date:12/23/2012

Autistic-like behaviors can be partially remedied by normalizing excessive levels of protein synthesis in the brain, a team of researchers has found in a study of laboratory mice. The findings, which appear in the latest issue of Nature, provide a pathway to the creation of pharmaceuticals aimed at treating autism spectrum disorders (ASD) that are associated with diminished social interaction skills, impaired communication ability, and repetitive behaviors.

"The creation of a drug to address ASD will be difficult, but these findings offer a potential route to get there," said Eric Klann, a professor at NYU's Center for Neural Science and the study's senior author. "We have not only confirmed a common link for several such disorders, but also have raised the exciting possibility that the behavioral afflictions of those individuals with ASD can be addressed."

The study's other co-authors included researchers from the University of California, San Francisco (UCSF) and three French institutions: Aix-Marseille Universite'; Institut National de la Sant et de la Recherche Mdicale (INSERM); and Le Centre National de la Recherche Scientifique (CNRS).

The researchers focused on the EIF4E gene, whose mutation is associated with autism. The mutation causing autism was proposed to increase levels of the eIF4E, the protein product of EIF4E, and lead to exaggerated protein synthesis. Excessive eIF4E signaling and exaggerated protein synthesis also may play a role in a range of neurological disorders, including fragile X syndrome (FXS).

In their experiments, the researchers examined mice with increased levels of eIF4E. They found that these mice had exaggerated levels of protein synthesis in the brain and exhibited behaviors similar to those found in autistic individualsrepetitive behaviors, such as repeatedly burying marbles, diminished social interaction (the study monitored interactions with other mice), and behavioral inflexibili
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Contact: James Devitt
james.devitt@nyu.edu
212-998-6808
New York University
Source:Eurekalert

Page: 1 2

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