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Signaling pathway linked to fetal alcohol risk
Date:2/20/2013

Fetal alcohol syndrome is the leading preventable cause of developmental disorders in developed countries. And fetal alcohol spectrum disorder (FASD), a range of alcohol-related birth defects that includes fetal alcohol syndrome, is thought to affect as many as 1 in 100 children born in the United States.

Any amount of alcohol consumed by the mother during pregnancy poses a risk of FASD, a condition that can include the distinct pattern of facial features and growth retardation associated with fetal alcohol syndrome as well as intellectual disabilities, speech and language delays, and poor social skills. But drinking can have radically different outcomes for different women and their babies. While twin studies have suggested a genetic component to susceptibility to FASD, researchers have had little success identifying who is at greatest risk or what genes are at play.

Research from Harvard Medical School and Veterans Affairs Boston Healthcare System sheds new light on this question, identifying for the first time a signaling pathway that might determine genetic susceptibility for the development of FASD. The study was published online Feb. 18 in the journal Proceedings of the National Academy of Sciences.

"Our work points to candidate genes for FASD susceptibility and identifies a path for the rational development of drugs that prevent ethanol neurotoxicity," said Michael Charness, chief of staff at VA Boston Healthcare System and HMS professor of neurology. "And importantly, identifying those mothers whose fetuses are most at risk could help providers better target intensive efforts at reducing drinking during pregnancy."

The discovery also solves a riddle that had intrigued Charness and other researchers for nearly two decades. In 1996, Charness and colleagues discovered that alcohol disrupted the work of a human protein critical to fetal neural developmenta major clue to the biological processes of FASD. The protein
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Contact: David Cameron
david_cameron@hms.harvard.edu
617-432-0441
Harvard Medical School
Source:Eurekalert

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