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Cutting the cord to determine babies' health risk from toxic exposure
Date:12/3/2008

Despite the well-known dangers of first- and secondhand smoke, an estimated ten percent of pregnant women in the U.S. are smokers. Exposure of a developing baby to harmful cigarette byproducts from mothers who smoke affects an estimated 420,000 newborns each year and poses a significant health care burden.

Now, in the first study of its kind, a team of researchers has completed a global assessment of newborns' umbilical cord blood to better understand the fetal health risks from smoking mothers. The research was led by Johns Hopkins University and included Rolf Halden, a researcher from the Biodesign Institute at Arizona State University.

"Cigarette smoking is a massive onslaught on human physiology," said Halden, who works in the institute's Center for Environmental Biotechnology. Cigarette smoke is known to contain more than 4,000 chemicals, potentially affecting the health of a newborn baby on multiple levels, including low birth weight, premature delivery and small size for gestational age. The exact cause of these health effects continues to be the subject of investigation.

"Unfortunately, maternal cigarette smoking puts babies at risk of adverse birth outcomes and increases susceptibility to other diseases later in life," said Halden.

The research team's goal was to provide the first assessment of proteins detectable in infant blood and to identify possible molecular predictors, or biomarkers, of fetal health risks.

The emergence of improved analytical tools allowed the researchers to address newborn health risks and explore the environmental effects of a well-known toxin in a level of detail not previously available. These tools include high-speed DNA sequencing, a powerful instrumental analysis called proteomic mass spectrometry to enhance the detection of proteins in complex samples, and bioinformatics, or the raw computing power to perform massive data crunching to tease out and identify biomarkers.


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Contact: Joe Caspermeyer
joseph.caspermeyer@asu.edu
480-727-0369
Arizona State University
Source:Eurekalert

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