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Library Categories > Genetics > Autism Study Explores Genetic Link

 
Library Item Name:

Autism Study Explores Genetic Link 		   
Summary Statement:

U of U Autism Study Explores Genetic Link to Autism
Content:

U of U autism study explores genetic link to disorder


Story by: Annie Cutler
There may be a link between genetics and autism. Leading researchers
from the University of Utah - along with 50 other institutions around
the world - have identified a gene that may predispose people to
autism. These findings are gathered from DNA samples from more than a
thousand families with multiple cases of the brain disorder.

A recent study showed that autism was 20 times more prevalent in Utah
now than 20 years ago. Utah currently has the highest rat e of autism,
about 1 in 133 children. Researchers hope these findings will lead to
better medications, cures, or even prevention of the brain disorder in
the future.

After researchers gathered the DNA from autistic individuals
scientists used a technique called linkage, using microchips to compare
ten thousand DNA markers to identify shared chromosome regions amongst
those with autism. They found a peak in chromosome 11. Another
susceptibility gene found was a gene called Neurexin 1, believed to be
important for allowing parts of the brain to send and receive signals.
University of Utah's William McMahon tells ABC 4, "The next steps will
be to test the Neurexin 1 gene markers in another sample of people and
see if it replicates."

Though these findings do not rule out environmental triggers to the
disorder researchers say it shows that "genetic factors - not
environmental toxins - are the major cause of autism." We're told these
findings will not help Utahns with aut ism immediately, but researchers
say there's reason to hope for better medications and treatments in the
next five to ten years - possibly a way to prevent the disorder in the
future.
Submission Date:

04/09/2007by: shannonj
Current rating:


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