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Scripps research scientists find clue to cause of childhood hydrocephalus
Date:9/7/2011

LA JOLLA, CA September 7, 2011 Scientists at The Scripps Research Institute have found what may be a major cause of congenital hydrocephalus, one of the most common neurological disorders of childhood that produces mental debilitation and sometimes death in premature and newborn children.

The research appears in the September 7, 2011, issue of the journal Science Translational Medicine.

Hydrocephalus, which involves excess buildup of cerebrospinal fluid in the brain, affects about 1 in 500 children in the United States. Currently only symptomatic treatment existsthe surgical placement of a shunt to drain away excess fluid. Researchers want to know the condition's causes, so they can figure out how to prevent and treat it. Scientists have known for some time that hydrocephalus was linked to bleeding events in the developing brain, but the reason for that linkage has not been clear.

The new study now suggests that hydrocephalus can be triggered by abnormal levels of lysophosphatidic acid (LPA), a blood-borne lipid that can enter the brain in high concentrations during bleeding events, with profound effects on developing brain cells. The study showed that both blood and LPA itself acted through the same receptor (receptors are proteins to which one or more specific kinds of signaling molecules bind) to produce defects in the brains of developing mice that led to severe hydrocephalus; genetic removal of a specific LPA receptor or pre-treatment with a compound that blocked the receptor largely prevented the condition.

"This provides proof of concept for the medical treatment of this disease," said Jerold Chun, MD, PhD, a professor at Scripps Research and its Dorris Neuroscience Center, and senior author of the new study, "and it also hints that this mechanism involving LPA could be relevant to other neurological conditions associated with altered brain development."

A Eureka Moment

Chun's labor
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Contact: Mika Ono
mikaono@scripps.edu
858-784-2052
Scripps Research Institute
Source:Eurekalert  

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