Journal
BIOMARKERS IN MEDICINE
Volume 6, Issue 5, Pages 655-662Publisher
FUTURE MEDICINE LTD
DOI: 10.2217/BMM.12.54
Keywords
amniotic fluid; biomarkers of abnormal fetal development; capillary electrophoresis; large-for-gestational-age; macrosomia
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Funding
- Canadian Institutes of Health Research (CIHR)
- Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery Grant
- Fonds Quebecois de la Recherche sur la Nature et les Technologies
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Aim: To identify, using capillary electrophoresis and chemometrics, early biomarkers in human amniotic fluid of large-for-gestational-age (LGA) infants. Materials & methods: Second trimester amniotic fluid samples, obtained from mothers undergoing age-related amniocentesis, were analyzed by capillary electrophoresis. Electropherogram data were aligned using correlation-optimized warping. A genetic algorithm using a Bayesian evaluation function and a leave-one-out cross-validation strategy for two birth outcomes: appropriate-for-gestational-age (AGA) versus LGA infants. Results: LGA (n = 23) was differentiated from AGA (n = 86) with a sensitivity of 100% and a specificity of 98% using only two wavelets. The first wavelet is associated with albumin and the second wavelet with an unknown small molecule. Conclusion: The approach developed herein allows LGA fetuses to be metabolically distinguished from AGA fetuses early in pregnancy and indicates that the birth of a LGA infant is already associated with an altered biochemical profile by the second trimester.
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