Alcohol-induced facial dysmorphology in C57BL/6 mouse models of fetal alcohol spectrum disorder

Bruce Anthony, Sophia Vinci-Booher, Leah Wetherill, Richard Ward, Charles Goodlett, Feng Zhou

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Alcohol consumption during pregnancy causes fetal alcohol spectrum disorder (FASD), which includes a range of developmental deficits. Fetal alcohol syndrome is the most severe form of FASD and can be diagnosed with pathognomonic facial features such as a smooth philtrum, short palpebral fissure, and thin upper vermilion. However, many children with developmental damage because of prenatal alcohol exposure exhibit none, or only a subset, of the above features, making diagnosis difficult. This study explored novel analyses to quantify the effect of a known dose of alcohol on specific facial measurements in substrains C57BL/B6J (B6J) and C57BL/6NHsd (B6N) mice. Mouse dams were provided alcohol (Alc) consisting of 4.8% (vol/vol) alcohol in a liquid diet for 16 days prepregnancy and chow and water diet during mating, and then the alcohol liquid diet was reinstated on gestational days 7 (E7) to gestational day 17 (E17). Treatment controls included a pair-fed (PF) group given matched volumes of an alcohol-free liquid diet made isocalorically and a group given ad lib access to lab chow and water (Chow). Maternal diet intake (Alc and PF), blood alcohol concentrations (BACs), embryo weights, and 15 morphometric facial measurements for E17 embryos were analyzed. B6N dams drank more alcohol during pregnancy and generated higher BAC than B6J dams. Both the Alc and PF treatments induced significant reductions in embryo weights relative to Chow in both substrains. Alcohol treatments produced significant changes, relative to controls, in 4 of the 15 facial measures for the B6N substrain but only in two measures for the B6J substrain. Discriminant analysis demonstrated successful classification of the alcohol-exposed versus nonalcohol-exposed B6N embryos, with a high sensitivity of 86%, specificity 80%, and overall classification (total correct 83%), whereas B6J mice yielded sensitivity of 80%, specificity 78%, and overall correct classification in 79%. In addition, B6N mice showed significantly more effects of pair feeding on these facial measures than did B6J mice, suggesting that the B6N substrain may be more vulnerable to nutritional stress during pregnancy. Overall, these data indicate that both B6N and B6J mice were vulnerable to alcohol but show differences in the severity and location of alcohol-induced dysmorphic facial features and may parallel findings from human studies comparing different ethnic groups. Furthermore, these findings suggest that discriminant analysis may be useful in predicting alcohol exposure in either mouse substrains.

Original languageEnglish
Pages (from-to)659-671
Number of pages13
JournalAlcohol
Volume44
Issue number7-8
DOIs
StatePublished - Nov 2010

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Fetal Alcohol Spectrum Disorders
Inbred C57BL Mouse
alcohol
Alcohols
Nutrition
Diet
embryo
Embryonic Structures
Discriminant Analysis
Dams
pregnancy
Pregnancy
discriminant analysis
Discriminant analysis
Multifetal Pregnancy Reduction
Weights and Measures
Sensitivity and Specificity
Water
Liquids
Blood

Keywords

  • Anthropometry
  • Craniofacial
  • Diagnosis
  • Facial development
  • Genetic variance
  • Morphometrics
  • Translational study

ASJC Scopus subject areas

  • Biochemistry
  • Medicine(all)
  • Behavioral Neuroscience
  • Neurology
  • Toxicology
  • Health(social science)

Cite this

Alcohol-induced facial dysmorphology in C57BL/6 mouse models of fetal alcohol spectrum disorder. / Anthony, Bruce; Vinci-Booher, Sophia; Wetherill, Leah; Ward, Richard; Goodlett, Charles; Zhou, Feng.

In: Alcohol, Vol. 44, No. 7-8, 11.2010, p. 659-671.

Research output: Contribution to journalArticle

Anthony, B, Vinci-Booher, S, Wetherill, L, Ward, R, Goodlett, C & Zhou, F 2010, 'Alcohol-induced facial dysmorphology in C57BL/6 mouse models of fetal alcohol spectrum disorder', Alcohol, vol. 44, no. 7-8, pp. 659-671. https://doi.org/10.1016/j.alcohol.2010.04.002
Anthony, Bruce ; Vinci-Booher, Sophia ; Wetherill, Leah ; Ward, Richard ; Goodlett, Charles ; Zhou, Feng. / Alcohol-induced facial dysmorphology in C57BL/6 mouse models of fetal alcohol spectrum disorder. In: Alcohol. 2010 ; Vol. 44, No. 7-8. pp. 659-671.
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abstract = "Alcohol consumption during pregnancy causes fetal alcohol spectrum disorder (FASD), which includes a range of developmental deficits. Fetal alcohol syndrome is the most severe form of FASD and can be diagnosed with pathognomonic facial features such as a smooth philtrum, short palpebral fissure, and thin upper vermilion. However, many children with developmental damage because of prenatal alcohol exposure exhibit none, or only a subset, of the above features, making diagnosis difficult. This study explored novel analyses to quantify the effect of a known dose of alcohol on specific facial measurements in substrains C57BL/B6J (B6J) and C57BL/6NHsd (B6N) mice. Mouse dams were provided alcohol (Alc) consisting of 4.8{\%} (vol/vol) alcohol in a liquid diet for 16 days prepregnancy and chow and water diet during mating, and then the alcohol liquid diet was reinstated on gestational days 7 (E7) to gestational day 17 (E17). Treatment controls included a pair-fed (PF) group given matched volumes of an alcohol-free liquid diet made isocalorically and a group given ad lib access to lab chow and water (Chow). Maternal diet intake (Alc and PF), blood alcohol concentrations (BACs), embryo weights, and 15 morphometric facial measurements for E17 embryos were analyzed. B6N dams drank more alcohol during pregnancy and generated higher BAC than B6J dams. Both the Alc and PF treatments induced significant reductions in embryo weights relative to Chow in both substrains. Alcohol treatments produced significant changes, relative to controls, in 4 of the 15 facial measures for the B6N substrain but only in two measures for the B6J substrain. Discriminant analysis demonstrated successful classification of the alcohol-exposed versus nonalcohol-exposed B6N embryos, with a high sensitivity of 86{\%}, specificity 80{\%}, and overall classification (total correct 83{\%}), whereas B6J mice yielded sensitivity of 80{\%}, specificity 78{\%}, and overall correct classification in 79{\%}. In addition, B6N mice showed significantly more effects of pair feeding on these facial measures than did B6J mice, suggesting that the B6N substrain may be more vulnerable to nutritional stress during pregnancy. Overall, these data indicate that both B6N and B6J mice were vulnerable to alcohol but show differences in the severity and location of alcohol-induced dysmorphic facial features and may parallel findings from human studies comparing different ethnic groups. Furthermore, these findings suggest that discriminant analysis may be useful in predicting alcohol exposure in either mouse substrains.",
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