Background image

Foundational Research

Potential role of the placenta in fetal alcohol spectrum disorder

Joey Gareri, James Brien, James Reynolds, Gideojn Koren.
First Published: 31 August 2012       DOI: 10.2165/0148581-200911010-00010


Doctor listening to infant incubator heartbeat

Doctor listening to newborn | Sourced by Freepik© Stock


Mediators of susceptibility to alcohol-related toxicity in the prenatal environment are relatively unknown. The placenta has been proposed as a potential source of variability in the fetal environment, primarily through its significant metabolic capabilities. Meconium is a toxicological matrix unique to the developing fetus that offers an opportunity to quantify fetal exposure to alcohol through the analysis of fatty acid ethyl esters (FAEE) [nonoxidative ethanol metabolites].


To explore the role of the placenta as a potential source of variability in mediating fetal alcohol exposure via meconium analysis of FAEE, by combining a clinical case report involving human dizygotic twins and a series of guinea pig littermates.


Meconium was collected from a pair of dizygotic twins with clinical suspicion of prenatal alcohol exposure and analyzed for FAEE to confirm prenatal alcohol exposure. Meconium was also collected from a series of guinea pig pups prenatally exposed to alcohol at a daily dose of 4 g/kg/day administered to the pregnant dam. FAEE levels were analyzed by gas chromatography with flame ionization detection following liquid-liquid extraction from meconium.


The dizygotic twin pair yielded positive meconium FAEE results (>2.00 nmoL/g) in the female twin (2.21 nmoL/g) and no detectable FAEE in the male twin. A total of 15 meconium samples were collected from 15 pups of five pregnant guinea pig litters. With the exception of one pair of littermates, meconium FAEE concentrations differed substantially within each litter (FAEE expressed in units of nmoL/g): litter 1 (0.996, 4.43, 1.36); litter 2 (5.17, 4.15, 0.00); litter 3 (5.16, 5.27); litter 4 (18.57, 8.26, 7.46); litter 5 (0.00, 4.32, 0.00, 1.27).


Identical maternal ethanol exposure levels produced differing levels of fetal exposure in a dizygotic human twin pair and a series of guinea pig littermates as evidenced through FAEE meconium analysis. These data indicate that the placenta may have a previously unappreciated role in mediating ethanol-induced fetal injury.


Read the Full Article      Learn More on Newborn Testing

Contact USDTL


Client Services

By Phone: 1.800.235.2367
Business Hours (CST)
Monday....................7am-7pm Tuesday....................7am-7pm Wednesday.............7am-7pm Thursday..................7am-7pm Friday........................7am-7pm Saturday...................8am-5pm

Contact Client Services

Newsletters, Posters, and Catalogs

Our print materials will keep you up to date on the latest news in drug and alcohol testing.

Request Literature

Request Your Collection Supplies

For your convenience, USDTL provides test collection supplies at no additional charge.

Order Supplies