Objective: To explore the correlation between maternal magnetic field (MF) exposure in daily life and embryonic development. Methods: A cross-sectional study was conducted among 149 pregnant women who were seeking induced abortion of unwanted pregnancies. Participating women were asked to wear an EMDEX Lite magnetic field meter for a 24-h period to obtain MF exposure level within 4 weeks following the abortion. Embryonic bud and sac lengths were measured through B-mode ultrasound before the surgical abortion. Embryo sections were prepared and examined for histological changes, and the apoptosis status of the deciduas was examined using the TUNEL apoptosis assay. Results: Embryonic bud length was inversely associated with maternal daily MF exposure level; the association was statistically significant at the time-weighted-average and 75th percentile of MF exposure levels, with coefficients of -3.09 (P = 0.0479) and -3.07(P = 0.0228), respectively. Logistic regression for examining the risk of higher MF exposure indicated that women with her 75th percentile of daily MF measurements ≥0.82 mG had a 3.95-fold risk of having a fetus with a shorter embryonic bud length than those whose daily MF exposure were <0.82 mG. MF exposure was associated with a higher degree of apoptosis, but the association was not statistically significant. We failed to find a statistical correlation between MF exposure and embryonic sac length and histological changes in the first trimester. Conclusion: Prenatal MF exposure may have an adverse effect on embryonic development. © 2014 Su et al.
CITATION STYLE
Su, X. J., Yuan, W., Tan, H., Liu, X. Y., Li, D., Li, D. K., … Miao, M. H. (2014). Correlation between exposure to magnetic fields and embryonic development in the first trimester. PLoS ONE, 9(6). https://doi.org/10.1371/journal.pone.0101050
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