The Assessment of Cord Blood Selenium Level in Preterm and Full-Term Neonates

Bakir, Wael Husseiny Soliman; Ghonem, Moustafa Gamal Amin; Gabr, Heba Elsayed

doi:10.21608/ejhm.2022.241712

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“…Our results showed that there were statistically significant differences in Se status at birth between AGA and SGA babies from healthy normotensive mothers, with both serum and urinary Se concentrations being lower in the latter. These observations agreed with those of other studies that evaluated the relationship between BW and Se status ( 20 , 29 , 44 – 51 ). While Strambi et al noted no such differences at birth, it was later observed that serum Se levels began to decline in SGA when compared to AGA infants ( 19 ).…”

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confidence: 92%

Selenium status in term neonates, according to birth weight and gestational age, in relation to maternal hypertensive pathology

et al. 2023

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BackgroundPregnancy represents a state of increased oxidative stress and antioxidants, in which selenium (Se) plays a pivotal role, contribute to maintain the oxidative balance. If antioxidant defenses are depleted, placental function is disrupted, resulting in pregnancy complications, including pregnancy-induced hypertension (PIH). Little is known about fetal selenium status in concomitant relation to maternal PIH, gestational age (GA) and birthweight (BW).MethodsWe examined over a 3-year period the serum (SeS) and urine selenium (SeU) status in term neonates from normotensive (nonPIH) and hypertensive (PIH) mothers as clinical markers of oxidative stress. In this retrospective observational study, 72 neonates with maternal PIH were matched for GA and BW to 72 neonates of normotensive mothers. Four groups were obtained, based on maternal PIH and BW relative to GA (appropriate-for-gestational-age—AGA, small-for-gestational-age—SGA): nonPIH-AGA (control group), nonPIH-SGA, PIH-AGA, and PIH-SGA.ResultsThe results showed significant differences (p < 0.001) in selenium levels among the study groups: SeS - 44.85 ± 7.56 μg/L in nonPIH-AGA, 39.62 ± 11.42 μg/L in nonPIH-SGA, 40.01 ± 10.07 μg/L in PIH-AGA, and 25.39 ± 8.99 μg/L in PIH-SGA; SeU - 27.98 ± 7.99 μg/L in nonPIH-AGA, 22.85 ± 9.48 μg/L in nonPIH-SGA, 23.44 ± 6.73 μg/L in PIH-AGA, and 13.05 ± 5.86 μg/L in PIH-SGA. Selenium depletion was more common in neonates born from hypertensive mothers and those born small for gestational age. Though moderate in intensity, selenium levels were positively correlated with BW (0.319 for SeS, 0.397 for SeU) and negatively correlated with maternal systolic blood pressure (−0.313 for SeS, −0.324 for SeU). The main independent effects on SeS and SeU of each maternal blood pressure and birth weight turned out statistically significant. In interaction, a more pronounced effect was reached in PIH-SGA neonates.ConclusionSelenium status seemed to reflect the negative impact that PIH exerts in neonates during intrauterine development. Clinical markers of selenium status could thus be of great value for tracking responses of individuals to selenium supplementation as part of health improvement and harm mitigation approaches.

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