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  • Title: Neonatal outcomes following exposure in utero to fallout from Chernobyl.
    Author: Hatch M, Little MP, Brenner AV, Cahoon EK, Tereshchenko V, Chaikovska L, Pasteur I, Likhtarov I, Bouville A, Shpak V, Bolshova O, Zamotayeva G, Grantz K, Sun L, Mabuchi K, Albert P, Tronko M.
    Journal: Eur J Epidemiol; 2017 Dec; 32(12):1075-1088. PubMed ID: 28856527.
    Abstract:
    Iodine 131 (I-131), the principal component of nuclear fallout from the Chernobyl accident, concentrates in the thyroid gland and may pose risks to fetal development. To evaluate this, neonatal outcomes following the accident in April of 1986 were investigated in a cohort of 2582 in utero-exposed individuals from northern Ukraine for whom estimates of fetal thyroid I-131 dose were available. We carried out a retrospective review of cohort members' prenatal, delivery and newborn records. The relationships of dose with neonatal anthropometrics and gestational length were modeled via linear regression with adjustment for potentially confounding variables. We found similar, statistically significant dose-dependent reductions in both head circumference (-1.0 cm/Gy, P = 0.005) and chest circumference (-0.9 cm/Gy, P = 0.023), as well as a similar but non-significant reduction in neonatal length (-0.6 cm/Gy, P = 0.169). Gestational length was significantly increased with increasing fetal dose (0.5 wks/Gy, P = 0.007). There was no significant (P > 0.1) effect of fetal dose on birth weight. The observed associations of radioiodine exposure with decreased head and chest circumference are consistent with those observed in the Japanese in utero-exposed atomic bomb survivors.
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