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Faulty development of immature brain cells causes hydrocephalus
Date:11/19/2012

Researchers at the University of Iowa have discovered a new cause of hydrocephalus, a devastating neurological disorder that affects between one and three of every 1,000 babies born. Working in mice, the researchers identified a cell signaling defect, which disrupts immature brain cells involved in normal brain development. By bypassing the defect with a drug treatment, the team was able to correct one aspect of the cells' development and reduce the severity of the hydrocephalus. The findings were published online Nov. 18 in the journal Nature Medicine.

"Our findings identify a new molecular mechanism underlying the development of neonatal hydrocephalus," says Calvin Carter, a student in the UI Graduate Program in Neuroscience and first author on the study. "By targeting this defective signaling pathway in mice using an FDA-approved drug, we were able to successfully treat this disease non-invasively."

Hydrocephalus, sometimes called water on the brain, involves build-up of fluid inside brain spaces known as ventricles. If the excess fluid is not removed, the ventricles expand, which can cause serious brain damage or death. Although hydrocephalus is one of the most common types of brain abnormality in newborn infants, treatment has not changed much over the last half century and involves invasive brain surgery to drain the fluid. Complications are common and the procedure often fails, meaning that children often need repeated surgeries.

"This disease is devastating and costly (almost $2 billion annually), and current treatment options are extremely limited," says Carter, who also is a National Science Foundation graduate research fellow. "Development of non-invasive therapies would revolutionize treatment of this condition."

Carter notes that reducing the size of the ventricles in mice is a clinically significant accomplishmen
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Contact: Jennifer Brown
jennifer-l-brown@uiowa.edu
319-356-7124
University of Iowa Health Care
Source:Eurekalert

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